Merchants in this category include airlines, hotels, motels, timeshares, car rental agencies, cruise lines, travel agencies, discount travel sites, campgrounds and operators of passenger trains, buses, taxis, limousines, ferries, toll bridges and highways, and parking lots and garages.
Some merchants that provide transportation and travel-related services are not included in this category; for example, real estate agents, educational merchants arranging travel, in-flight goods and services, on-board cruise line goods and services, sightseeing activities, excursions, tourist attractions, RV and boat rentals, merchants within hotels and airports, public campgrounds and merchants that rent vehicles for the purpose of hauling. Purchases from gift card merchants or merchants that sell points or miles will not qualify in the travel category.
What counts as Travel?
Airline purchases, fees & gift cards
AA e-gift certificate
Delta eGift Cards
UA in-flight bev
Hotels:
Marriott GC and hotel charges
Airbnb & their GC
hotels.com (NOT hotels.com e-gift cert!)
Hotel restaurants not charged to room (verified at Renaissance LV)
Priceline "opaque" hotel purchases
Kruger National Park lodging reservation (booked on sanparks.org official site)
Transit, including parking, trains, ferries, toll roads, etc:
Taxi fares: Uber, Lyft, Gett, Way2Ride, London taxi, Fasten (Austin)
Transit fees: BART, MTA, FastTrak, Clipper Card (Bay Area), MetroCard, DC Metro (WMATA) SmarTrip farecard and commemorative cards, NJ Transit, Oyster card, Ventra (Chicago), Las Vegas Monorail, Brussels (STIB/MIVB), Incheon Airport Bus tickets, Orca King county(Seattle area), Suica/PASMO (Tokyo IC transit card - Apple pay top up)
Parking meters: Atlanta; Chicago; Portland, OR; San Francisco; Atlantic City; Seattle, (Los Angeles but NOT Santa Monica)
Public parking garages: San Francisco; Montgomery Co. MD
Train tickets: trainline (UK train tickets), Eurostar.com, Bahn.com (when using Paypal), Amtrak, italirail.com, Train and bus travel in Scotland at ticket counter.
Amtrak dining car purchases (YMMV, recent reports are below):
Pacific Surfliner, November 2016 (tmiw): yes, counted as travel with CSR.
Pacific Surfliner, December 2018 (tmiw): did NOT count as travel (no travel credit), but did count as dining for 3x.
San Joaquin, December 2015 (serpens): counted as 3x on CSR, unknown if counted as travel.
unknown train/date (StanJazz): counted as dining on Freedom and CSP.
Ferries: Cape May, NJ to Lewes, DE and NYWaterway (Belford-Pier 11)
Shuttles: Jackson Hole WY Airport official shuttle to town
Unlimted JR Pass for Japan purchased from japan-rail-pass.com
Misc:
MileagePlusX Uber GC [NB MPX eBay did NOT count, so it appears to be only actual travel related items on MPX]
Royal Caribbean drink package
Cruise bookings
Cruise Excursions Booked Prior to Cruise (and fully refundable)
MIR Travel Agency
undercovertourist.com
Rental cars (verified Avis on page 7 of this thread, Hertz)
