Are there good opportunities for Frontier to open some domestic service at BWI? The Washington DC region is a huge region and has some tourist appeal in the summer and VFR. Plus a lot of people do contracting work remotely, from DC based jobs, so there might be self-employed, contracting, small business passengers looking for work from DC but commuting on their own dime. I was thinking these routes, tying an existing F9 station where WN lacks presence, on a less than daily basis:

BWI-UST
BWI-MSN
BWI-GSO
BWI-TYS
BWI-CID
BWI-BMI

The latter markets are without Southwest service, first one Southwest has from JAX. I'd guess opening BWI would be better for those markets (like GSO) for low fare service into DC than necessarily attractive for Baltimoreans looking for a weekend getaway. Would it be a good idea or would F9 be too small a fish at BWI, and the cities too small, that it be a challenge?

Frontier has previously had, and again will have, a teensy-weensy presence at BWI, with a couple of Apple flights a week to PUJ, which start in August - they're Frontier scheduled as well, and can be booked on the website.

Frontier has previously served BWI-CUN (with Apple) as well, maybe a couple of times a week, and at least at one stage had a check-in counter at BWI.

I think BWI would be a good thing, with carefully chosen routes such as you suggest.

I'd probably scratch off BWI-GSO. It's under 5-6 hours (and not too difficult drive) from GSO to the DC region.

I'm not sure Frontier would want to do BWI-MCO, but the market is huge. Anyways, I think for MCO and MDW, it's maybe more strategic to keep them at MDT rather than diluting off pax from MDT to BWI. I'm hoping for MDT-TPA, MDT-FLL and MDT-RSW this next winter, with the interest in MDT again with MDT-MDW for this summer.

Adding CLE would be great but that would mean going up against WN. UA is dropping the service although they claimed to be keeping it.

Southwest sells BWI-CLE one-way tickets for about $90-93 advance purchase WGA, and about $200 for a two day out one-way WGA ticket. Both include checked bags and ability to change without fees.

I can't see Frontier wanting to directly compete on that one, since Southwest would just add capacity and discount the fares, but maybe Frontier could on BWI-YNG and sell tickets for about $50-60 Economy advance purchase (2-3 weeks out). This would be ideal for those willing to drive a little to save some money on fares.

It can offer a BWI-YNG-MDW itinery and sell $60 tickets on the YNG-MDW sector as well. That second sector could be really popular for people from Pittsburgh seeking low fares to Chicago and vice versa. I came up with $60 as that's the fare on TTN-CLE currently 3 weeks out, and it's roughly the same distance.

In my opinion, Cleveland to Chicago is too close of a distance for a leisure/low fare carrier, although F9 now has a growing presence in both CLE and MDW. MegaBus covers that route. I've driven it a couple of times and found it's straightforward ride on Indiana and Ohio turnpikes. I once rented a car at MDW that had an Indiana I-PASS tag that I paid a daily fee, but it covered all tolls during my rental. It came out to a lot less than the actual tolls of crossing states. I think Pittsburgh being 2-2.5 hours extra however makes the drive a little too long, so YNG being somewhat straddled between CLE and PIT might be a good airport for F9 as well, even though F9 is already in CLE and has international service out of PIT.