Yes, you can add a carry-on on JetBlue Blue Basic: the fare now includes one overhead-bin bag plus one personal item, as long as both meet size rules.

Yes, a wheelchair can go on a plane: airlines carry manual or powered chairs, and you can ride an airport chair to the gate with trained assistance.

Yes, on Allegiant you can add a bag after check-in by using Manage Travel before printing a boarding pass, or at the airport counter for a higher fee.

No, a vape must stay out of checked bags; electronic smoking devices go in carry-on or on your person, with batteries protected and power off.

Yes, a UE Boom can go in checked luggage, but carrying the speaker in your cabin bag is wiser and spare lithium batteries must stay in carry-on.

Yes—most airlines let you add checked bags after booking through Manage Booking or the app, usually up to a few hours before departure.

Yes, a shaver can go in a carry-on—electric shavers and disposable razors are fine, but loose blades or a loaded safety razor must ride in checked bags.

Yes — on most trips, you can add a checked bag after online check-in with American Airlines in the app, under My Trips on aa.com, or at a kiosk.

No—on most airlines a snowboard exceeds carry-on size, so pack it as checked baggage; TSA permits snowboards, but the airline’s limits control.

Yes — United lets you add a checked bag online, in app, at kiosks, or at the counter; fees vary by route, fare, and status.