I know LCCs "only" sell one-ways, but most of their lower fares are priced "one-way based on round-trip purchase." Hence, when you see WN
or JetBlue (or even AA
, for that matter) advertise a "$99 fare," it will usually be end up costing $210 or so with the round-trip, taxes, airport fees, etc.
If you buy a round trip ticket and "throw away" the return portion of your trip, it is possible (although I'm uncertain how likely) that the airline change charge you the difference between the ticket you bought and the price of a one-way unrestricted ticket.
Has anyone ever heard of this happening? I've done it more than twice, and several friends have done it as well (people who are moving, etc.) I would be greatly upset if this happened. I do know that if you miss a connection, most airlines will cancel your itinerary. Ex: had a friend who was flying ACT
. She got stuck in Dallas the night before her flight, so she decided to just stay in Dallas instead of driving to Waco then flying back. When she gets to DFW
, no dice: she had to originate her trip at ACT
, otherwise the ticket was invalid.