Frontier Airlines EarlyReturns - Frontier Promo Codes

Any new promo codes for March, seems sparce?

None that active I know of. Frontier is not a very common user of special offer and discount codes, though they do occcasionally exist.

WEB10 Promo

Frontier will offer a 10% discount on U.S. domestic fares to/from Albuquerque, Austin, Dallas, Houston, Las Vegas, Oklahoma City, Phoenix, San Antonio, San Diego and Tucson from Monday, March 5, 2012, through 11:59 a.m. Eastern time, Wednesday, March 7, 2012. The discount will apply to regular and sale fares for travel through May 9, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code WEB10. No exceptions will be made.

Other terms and conditions apply.

DUKE Promo



Frontier will offer a 7% discount on U.S. domestic fares to/from Akron/Canton, Branson, Chicago (Midway), Columbus, Dayton, Des Moines, Detroit, Grand Rapids, Indianapolis, Kansas City, Madison, Milwaukee, Minneapolis, Omaha, Rockford, Sioux Falls, St. Louis and Wichita from Tuesday, March 20, 2012, through 11:59 p.m. Eastern time, Wednesday, March 21, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through May 9, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code DUKE. No exceptions will be made.



Other terms and conditions apply.

Frontier will offer a 5% discount on domestic fares to/from Denver from Thursday, March 22, 2012, through 11:59 p.m. Eastern time, Friday, March 23, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through November 14, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code CAMMIE. No exceptions will be made.


Other terms and conditions apply.

Thanks mke9499. Do you mind sharing where you find these codes?

Thanks mke9499. Do you mind sharing where you find these codes?

I believe these are all part of the spokesanimal search promotion.

Thanks mke9499. Do you mind sharing where you find these codes?

Have you signed up for e-mail promotions?

Another promo code valid for 10% discount is COW.

Travel must be booked by the end of today, with no advance purchase requirements. Travel can be booked out as far as mid November 2012 (as far as current schedule goes).

This is a great code...not many limitations.

I've signed up for the ER emails and voted for the animals. Is there another one? I forgot I had got an email for voting last week already, DOH

This is a great code...not many limitations.

Except for booking within seven days of receipt of the email.

I've signed up for the ER emails and voted for the animals. Is there another one? I forgot I had got an email for voting last week already, DOH

"Error: DOH is not a valid code"

Seriously though, just sign up again and see if you get a new code. If you use GMail, you can use many different addresses that will all go to your own account - see details: http://www.makeuseof.com/tag/1-awesome-gmail-tip-you-dont-know-about-seriously/

Valid for 9% discount on bookings made by 03/28/2012 for travel thru 05/31/2012.

DORIS Promo Code Offer

Frontier will offer a 9% discount on domestic fares to/from Fort Lauderdale, Fort Myers, Orlando and Tampa from Tuesday, March 27, 2012, through 11:59 p.m. Eastern time, Wednesday, March 28, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through May 31, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code DORIS. No exceptions will be made

Another day, another promo code.



Frontier will offer a 12% discount on domestic fares to/from Knoxville, Little Rock, Louisville, Nashville, New Orleans and Newport News from Thursday, March 29, 2012, through 11:59 p.m. Eastern time, Friday, March 30, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through June 13, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code MARIO. No exceptions will be made.

Other terms and conditions apply.

Hey, thanks! the 12 % code worked!!

I haven't gotten any emails with promos... are there any more right now? DEN, IND or SDF?

New one today: http://www.frontierairlines.com/promo-code-polly

POLLY Promo Code Offer

Frontier will offer an 11% discount on domestic fares to/from Denver from Monday, April 2, 2012, through 11:59 p.m. Eastern time, Tuesday, April 3, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through June 13, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code POLLY. No exceptions will be made.

Frontier will offer a 15% discount on domestic fares to/from Denver from Thursday, April 5, 2012, through 11:59 p.m. Eastern time, Friday, April 6, 2012. Alaska travel is excluded. The discount will apply only to Classic fares, including sale fares, for travel April 15 through November 14, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code CLASSIC. No exceptions will be made.

Here's a new last-minute code:

Frontier will offer a 13% discount on domestic fares to/from Denver from Tuesday, April 10, 2012, through 11:59 p.m. Eastern time, Wednesday, April 11, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through April 18, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code SAMSON. No exceptions will be made.

http://www.frontierairlines.com/promo-code-samson

Must book today, April 13:


Frontier will offer a 15% discount on domestic fares to/from Texas from Thursday, April 12, 2012, through 11:59 p.m. Eastern time, Friday, April 13, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through November 14, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code FRED. No exceptions will be made

Other terms/conditions apply

GRIZ Promo Code Offer

Frontier will offer a 15% discount on domestic fares to/from BLI, PDX, SEA and GEG from Monday, April 16, 2012, through 11:59 p.m. Eastern time, Tuesday, April 17, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through June 13, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code GRIZ. No exceptions will be made.


The usual terms and conditions apply.

Thanks mke9499. The code worked great. Saved $40.

GRIZ code. Thanks again.:D

GRIZ still works. LGA-MKE. Saved 15%. Thanks OP!

Promo code for ABE, DCA, MDT, PHF, PHL and LGA.


FOXY Promo Code Offer

Frontier will offer a 15% discount on domestic fares to/from ABE, DCA, MDT, PHF, PHL and LGA from Monday, April 23, 2012, through 11:59 p.m. Eastern time, Tuesday, April 24, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through June 20, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code FOXY. No exceptions will be made.

Book by 05/30/2012 and travel by 06/09/2012.

FLYNOW Promo Code

Frontier will offer a 15% discount on domestic fares from Tuesday, May 29, 2012, through 11:59 p.m. Eastern time, Wednesday, May 30, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel through June 9, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code FLYNOW. No exceptions will be made.



The usual T & C apply.

Just noticed DBDCA is the code for double miles MSN-DCA 6/7 to 7/7. Must register before flying...

FLYF9 Promo Code Offer

Frontier will offer a 17% discount on domestic fares to/from Akron-Canton, OH; Chicago (MDW), IL; Dallas/Ft. Worth, TX; Dayton, OH; Ft. Lauderdale, FL; Las Vegas, NV; and New York (LGA), NY from Thursday, June 7, 2012, through 11:59 p.m. Eastern time, Friday, June 8, 2012. The discount will apply to regular and sale fares for travel June 13, 2012, through November 14, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code FLYF9. No exceptions will be made.



As always, the usual T&C apply.

Frontier will offer a 5% discount on Economy fares, 10% discount on Classic fares and 15% discount on Classic Plus fares from Tuesday, June 19, 2012, through 11:59 p.m. Eastern time, Wednesday, June 20, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel on nonstop flights from June 30, 2012, through October 31, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code CHOICE. No exceptions will be made.



or



Big sky promo

Get 20% off domestic flights to/from Billings, Bozeman and Great Falls, MT. Save big bucks. Buy by 6/23. Fly 6/30-11/14/12. Excludes Alaska.
Use promo code MONTANA

BIGAPPLE Promo Code Discount

Frontier will offer a 9% discount on domestic fares to/from New York (LGA), NY, from Monday, June 25, 2012, through 11:59 p.m. Eastern time, Friday, June 29, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel July 10, 2012, through October 6, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code BIGAPPLE. No exceptions will be made.

BIRTHDAY18 Promo Code Discount

Frontier will offer an 18% discount on domestic fares from Tuesday, July 3, 2012, through 11:59 p.m. Eastern time, Thursday, July 5, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel July 24, 2012, through November 14, 2012. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code BIRTHDAY18. No exceptions will be made.

CHOICE Promo Code Offer

Frontier will offer a 5% discount on Economy fares, 10% discount on Classic fares and 15% discount on Classic Plus fares from Tuesday, July 17, 2012, through 11:59 p.m. Eastern time, Wednesday, July 18, 2012. The discount will apply to regular and sale fares for travel on nonstop flights from July 28, 2012, through November 16, 2012. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code CHOICE. No exceptions will be made.

FYI: the "CHOICE" promo code still works.

California catch – 8% off.
Catch a wave with 8% off fares to/from Los Angeles, Sacramento, San Diego, San Francisco, Santa Ana and Santa Barbara, CA. Buy by 7/25. Travel 8/2 through 10/10/12. Use promo code GOLDEN

Not a Promo code per se, but Frontier currently (till 7/26) having an East Coast sale (e.g., $214 RT DEN-LGA) The terms say till 10/6 but the sale prices come up into mid-November (and also include several Fridays).

Tickets must be purchased by 11:59 p.m. Eastern time, July 26, 2012. Fares are one way for travel through October 6, 2012, for flights operating Monday through Thursday and Saturday. Roundtrip purchase not required. A 21-day advance purchase applies.

In celebration of Colorado's Birthday, we're also offering an additional 5% off all domestic nonstop fares to/from Colorado. Whether you live in Colorado or will be bringing your family here to visit, consider this a family discount from Frontier, Colorado's Hometown Airline.

Buy by 8/3 for travel 8/10 through 12/19/12. Use promo code COLORADO. Excludes Alaska.

10% off next year

Book now and save some cold cash for winter. Take 10% off any domestic fare and be among the first to take advantage of our extended schedule.

Use promo code FLY10 to book your winter getaway NOW. Buy by 8/10. Travel 1/7-3/17/13.

Frontier will offer a 5% discount on Economy fares, 10% discount on Classic fares and 15% discount on Classic Plus fares from Tuesday, August 21, 2012, through 11:59 p.m. Eastern time, Friday, August 24, 2012. The discount will apply to regular and sale fares for domestic travel from September 1, 2012, through November 16, 2012. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code CHOICE. No exceptions will be made.

PLANE Promo Code Discount

Frontier will offer a 5% discount on domestic fares to/from Akron/Canton, OH; Dayton, OH; Des Moines, IA; Fargo, ND; Grand Rapids, MI; Indianapolis, IN; Kansas City, MO; Madison, WI; Milwaukee, WI; Minneapolis, MN; Omaha, NE; Sioux Falls, SD; and St. Louis, MO, from Tuesday, August 28, 2012, through 11:59 p.m. Eastern time, Friday, August 31, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel September 8, 2012, through March 17, 2013. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code PLANE. No exceptions will be made

CHOICE Promo Code Offer

Frontier will offer a 5% discount on Economy fares, 10% discount on Classic fares and 15% discount on Classic Plus fares from Tuesday, September 4, 2012, through 11:59 p.m. Eastern time, Friday, September 7, 2012. The discount will apply to regular and sale fares for domestic travel from September 15, 2012, through November 16, 2012. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased online at FrontierAirlines.com using the promo code CHOICE. No exceptions will be made.

Here's what happens when I get an email from Frontier announcing a new sale (like today's Go-See-Do promotion):

1) Click on email link or open browser to Specials page
2) Wait for page to load
3) Wait for page to load
4) Wait for page to load
5) Open in a different browser, repeat steps 2-4
6) Try reloading page on error
7) See #6
8) Go about my day, check back later, sometimes find page loaded
9) Select travel cities, click on See Dates, select and click on Find My Flights
10) See that prices don't match those shown in #9 for any days, give up

FRONTIER Promo Code Discount

Frontier will offer a 5% discount on domestic fares from Wednesday, September 12, 2012, through 11:59 p.m. Eastern time, Friday, October 12, 2012. Alaska travel is excluded. The discount will apply to regular and sale fares for travel September 15, 2012, through March 17, 2013. All fare rules will apply.

Tickets must be purchased online at FlyFrontier.com using the promo code FRONTIER. No exceptions will be made.

SPRING25 Promo Code Discount

Frontier will offer a 25% discount on domestic fares from Tuesday, October 2, 2012, through 11:59 p.m. Eastern time, Friday, October 5, 2012.Alaska travel is excluded. The discount will apply to regular and sale fares for travel April 2, 2013, through May 15, 2013. All fare rules will apply.

Tickets must be purchased online at FlyFrontier.com using the promo code SPRING25. No exceptions will be made

Promo code "checkin" provides 15% discount on base fare.

Promo Code FLY2013 Discount Offer

Frontier will offer a discount of $20.13, per direction, for domestic travel with a qualifying minimum base fare of $70, per person, each way. Discount will apply to regular and sale fares purchased through 11:59 p.m. Eastern time, Monday, October 29, 2012. Discount is valid for travel January 8, 2013, through March 17, 2013. Blackout dates of February 14, 15, and 18, 2013, apply. All fare rules will apply.

Tickets must be purchased online at FlyFrontier.com using the promo code FLY2013. No exceptions will be made.

Use promo code CHOICES, and get 5% off Economy, 10% off Classic or 15% off Classic Plus.

Buy by 11/12/12.

Fly 11/19/12 – 5/15/13.

50% off flights from Dec-1 through Dec-19 to/from Albuquerque, Austin, Billings, Bozeman, Durango, Kansas City, Knoxville, Mesa, Newport News, Oklahoma City, Palm Springs, Provo and South Bend - must be booked by tomorrow, the 14th. Code is DEC50

50% off flights from Dec-1 through Dec-19 to/from Albuquerque, Austin, Billings, Bozeman, Durango, Kansas City, Knoxville, Mesa, Newport News, Oklahoma City, Palm Springs, Provo and South Bend - must be booked by tomorrow, the 14th. Code is DEC50I needed a small MR to lock in Ascent for next year. DEN-AZA $60 RT all in.

I needed a small MR to lock in Ascent for next year. DEN-AZA $60 RT all in.

Glad it was useful! A friend of mine is going to come up 194 miles short of Ascent this year. What do you think are the chances if he called that they would bump him up anyway?

Glad it was useful! A friend of mine is going to come up 194 miles short of Ascent this year. What do you think are the chances if he called that they would bump him up anyway?Hard to know with F9; if it were UA I'd say the odds were zero. Can't hurt to call.

If he's based in DEN, he should grab one of these DEC50 fares and be done with it.

Glad it was useful! A friend of mine is going to come up 194 miles short of Ascent this year. What do you think are the chances if he called that they would bump him up anyway?

Last year I was almost 1000 miles short, I e-mailed a polite request to maintain Ascent and they did it. This year I'll be about 350 miles short, plan to ask again after the mileage from my last flight of the year posts. I learned on FT that if you are within 1K they will usually grant it.

Thanks for the anecdotal experience - indeed he called ER and said that the lady to which he spoke thought that they could take care of him. Very nice that they offer a bit of flexibility when it makes sense rather than 100% compliance to the rules regardless of logic, and one of the reasons that they continue to be my favorite airline.

Promo Code LETSFLY Discount Offer

Frontier will offer a 13% discount on domestic nonstop fares from Tuesday, November 13, 2012, through 11:59 p.m. Eastern time, Wednesday, November 21, 2012. The discount will apply to regular and sale fares for domestic nonstop travel from January 7, 2013, through February 13, 2013. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased online at FlyFrontier.com using the promo code LETSFLY. No exceptions will be made.

Frontier will offer a 15% discount on domestic nonstop fares on Monday, November 26, 2012. The discount will apply to regular and sale fares for domestic nonstop travel from December 3, 2012, through December 19, 2012. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased below using the promo code CYBER15. No exceptions will be made.

Frontier has some good deals lately, but wish more people would fly them and get the press as Southwest and all the luv.

Code MAYAN for $20.13 Discount (expires 12/24/2012)

The $20.13 per direction, per person discount applies to base fare only, not to fees or taxes, and requires purchase at FlyFrontier.com using the promo code MAYAN. Discount applies to all base fare amounts of equal or greater value. Tickets must be purchased by 11:59 p.m. Eastern time on December 24, 2012, for travel January 4, 2013 through February 13, 2013.

CLASSIC for 10% off classic fares, buy by 12/25/12. Fly 1/7 – 3/13/13.
The 10% discount on Classic fares applies to base fare only, not to fees or taxes, and requires purchase at FlyFrontier.com using promo code CLASSIC. Discount applies to domestic fares to/from Bozeman, MT; Colorado Springs, CO; Denver, CO; Durango, CO; Jackson Hole, WY; and Salt Lake City, UT. Tickets must be purchased by 11:59 p.m. Eastern time on December 25, 2012, for travel January 7, 2013, through March 13, 2013.

Frontier will offer a 13% discount on domestic fares to/from: Atlanta, GA; Cleveland, OH; Nashville, TN; Newport News, VA; New York, NY; and Washington, DC from Tuesday, January 15, 2013, through 11:59 p.m. Eastern time, Thursday, January 17, 2013. The discount will apply to regular and sale fares for domestic travel from January 24, 2013, through May 15, 2013. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased below using the promo code JET13. No exceptions will be made.

Unsure if this is only good to/from Denver:

Take 10% off your spring travel when you book at FlyFrontier.com

This is an exclusive offer for Denver Restaurant Week. Use promo code DENVER10 when you buy between 1/16/2013 and 3/8/2013, to fly between 4/9/2013 and 6/6/2013.

http://www.flyfrontier.com/promo-code/ski10

Frontier will offer a 10% discount on domestic Classic fares from Tuesday, January 22, 2013, through 11:59 p.m. Eastern time, Thursday, January 24, 2013. The discount will apply to regular and sale fares to/from: Bozeman, MT; Colorado Springs, CO; Denver, CO; Durango, CO; Jackson Hole, WY; and Salt Lake City, UT, from January 31, 2013, through March 13, 2013. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased below using the promo code SKI10. No exceptions will be made.

http://www.flyfrontier.com/promo-code/ski10

Frontier will offer a 10% discount on domestic Classic fares from Tuesday, January 22, 2013, through 11:59 p.m. Eastern time, Thursday, January 24, 2013. The discount will apply to regular and sale fares to/from: Bozeman, MT; Colorado Springs, CO; Denver, CO; Durango, CO; Jackson Hole, WY; and Salt Lake City, UT, from January 31, 2013, through March 13, 2013. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased below using the promo code SKI10. No exceptions will be made.

Thanks a bunch! Just used it to save $60 :)

http://www.flyfrontier.com/promo-code/plus

Frontier will offer a discount of $25.00, per direction, for domestic travel with a qualifying minimum base fare of $25, per person, each way. Discount will apply to all Classic Plus fares purchased through 11:59 p.m. Eastern time, Thursday, January 31, 2013. Discount is valid for travel February 8, 2013, through July 10, 2013. All fare rules will apply.

Tickets must be purchased below using the promo code PLUS. No exceptions will be made.

CLASSIC promo code is back: http://www.flyfrontier.com/promo-code/classic
Frontier will offer a 10% discount on Classic fares for domestic travel through 11:59 p.m. Eastern time, Thursday, February 7, 2013. The discount will apply to regular and sale Classic fares for domestic travel February 19, 2013 through May 22, 2013. Alaska and international travel are excluded. All fare rules will apply.

Tickets must be purchased below using the promo code CLASSIC. No exceptions will be made.

Please let me know of any Frontier promo codes for flying from DEN to PHX in April. I need them ASAP to get a flight booked for a wedding. Thx!

Please let me know of any Frontier promo codes for flying from DEN to PHX in April. I need them ASAP to get a flight booked for a wedding. Thx!

Typically the discount codes get emailed out on Tuesday; I'll try and make sure to post them tomorrow -- they'd been going to my spam folder, so I missed them there for a few weeks.

Frontier will offer a 10%, 8%, or 5% discount on domestic fares from Tuesday, March 12, 2013, through 11:59 p.m. Eastern time, Monday, March 18, 2013, for travel from April 2, 2013, through June 8, 2013. Alaska travel is excluded. All fare rules will apply.

The 10% discount will apply to regular and sale fares for travel to/from: Bismarck, ND; Bellingham, WA; Fargo, ND; Minot, ND; Oklahoma City, OK; Omaha, NE; Portland, OR; Seattle, WA; Sioux Falls, SD; and Spokane, WA.

The 8% discount will apply to regular and sale fares for travel to/from Bozeman, MT; Cleveland, OH; Grand Rapids, MI; Great Falls, MT; Houston, TX; Indianapolis, IN; Los Angeles, CA; Minneapolis, MN; Salt Lake City, UT; and Santa Ana, CA.

The 5% discount will apply to all domestic destinations to/from Denver, excluding Alaska.

Tickets must be purchased below using the promo code SPRING10, SPRING8, or SPRING5. No exceptions will be made.

http://www.flyfrontier.com/promo-code/shake


Promo code SHAKE

Frontier will offer a 10% discount on domestic Classic fares and a 15% discount on domestic Classic Plus fares from Tuesday, March 19, 2013, through 11:59 p.m. Eastern time, Monday, March 25, 2013. The discount will apply to regular and sale fares for domestic travel April 2, 2013, through September 8, 2013. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased below using the promo code SHAKE. No exceptions will be made.

http://www.flyfrontier.com/promo-code/choice

Frontier will offer a 5% discount on domestic Economy fares, 10% discount on domestic Classic fares, and 15% discount on domestic Classic Plus fares from Tuesday, April 2, 2013, through 11:59 p.m. Eastern time, Thursday, April 4, 2013. The discount will apply to regular and sale nonstop fares for domestic travel from September 9, 2013, through November 13, 2013. Alaska travel is excluded. All fare rules will apply.

Tickets must be purchased below using the promo code CHOICE. No exceptions will be made.

http://www.flyfrontier.com/promo-code/beaches

Frontier will offer a 15% discount on fares to/from: Cancun, MX; Cozumel, MX; Puerto Vallarta, MX; San Jose Cabo, MX; and San Jose, CR from Tuesday, April 9, 2013, through 11:59 p.m. Eastern time, Thursday, April 11, 2013. The discount will apply to regular and sale fares for travel from April 9, 2013, through June 7, 2013. Discount does not apply to flight numbers 1 through 59 or Alaska travel. All fare rules will apply.

Tickets must be purchased below using the promo code BEACHES. No exceptions will be made.

http://www.flyfrontier.com/promo-code/frontier25

Frontier will offer a discount of $25.00, per direction, for domestic travel with a qualifying minimum base fare of $25, per person, each way. Discount will apply to all Classic Plus fares purchased through 11:59 p.m. Eastern time, Thursday, April 18, 2013. Discount is valid for travel April 22, 2013, through May 22, 2013. Alaska travel is excluded from this offer. All fare rules will apply.

Tickets must be purchased below using the promo code FRONTIER25. No exceptions will be made.

http://www.flyfrontier.com/promo-code/alaska10

Frontier will offer a 10% discount on domestic Alaska fares from Tuesday, April 23, 2013, through 11:59 p.m. Eastern time, Monday, April 29, 2013. The discount will apply to regular and sale fares for domestic travel to/from Alaska from May 16, 2013, through September 16, 2013. All fare rules will apply.

Tickets must be purchased below using the promo code ALASKA10. No exceptions will be made.

http://www.flyfrontier.com/promo-code/choice

Frontier will offer a 5% discount on domestic Economy fares, 10% discount on domestic Classic fares, and 15% discount on domestic Classic Plus fares from Tuesday, May 7, 2013, through 11:59 p.m. Eastern time, Thursday, May 9, 2013. The discount will apply to regular and sale fares for domestic travel from May 17, 2013, through November 13, 2013. All fare rules will apply.

Tickets must be purchased below using the promo code CHOICE. No exceptions will be made.

Not sure of the details but it looks like the promo code "cleaners" will give you between 15-20% off classic and classic plus fares for flights out of Princeton/Trenton (TTN). Expiration date unknown.

http://www.flyfrontier.com/promo-code/alaskaten-denver
Frontier will offer a 10% discount on domestic Alaska fares from Monday, May 13, 2013, through 11:59 p.m. Eastern time, Monday, May 20, 2013. The discount will apply to regular and sale fares for domestic travel to/from Alaska from May 25, 2013, through September 16, 2013. All fare rules will apply.

Tickets must be purchased below using the promo code ALASKATEN. No exceptions will be made.

http://www.flyfrontier.com/promo-code/classic10

Frontier will offer a 10% discount on domestic Classic fares from Tuesday, May 21, 2013, through 11:59 p.m. Eastern time, Tuesday, May 28, 2013. The discount will apply to regular and sale fares for domestic travel May 23 through May 28, 2013. All fare rules will apply.

Tickets must be purchased below using the promo code CLASSIC10. No exceptions will be made.