We’ve been living in a golden age of flight change and cancellation flexibility, though of course the reason behind that flexibility sucks. That age is about to be over — most airlines’ liberal change policies on even the cheapest of fares are reverting back to normal on Thursday.

If you’re booking travel, and apparently a lot of you are because AA flights are basically full over the next couple of months, now is the time to lock in those bookings. Book by tomorrow and even Basic Economy fares on the major US carriers can be changed for only the fare difference and in some cases they can be refunded completely. Normally they’re of course non-refundable, non-changeable, and require that you wear your most uncomfortable shoes and a pair of underwear that’s two sizes too small. Scoot in under the deadline to avoid that nonsense.

Sure these shoes are uncomfortable, but check out that, umm let’s call it, style!