Moderator: United Airlines
Join Date: Jun 2007
Location: SFO
Programs: UA Plat 1.995MM, Hyatt Discoverist, Marriott Plat/LT Gold, Hilton Silver, IHG Plat
Posts: 66,854
There is in general three class of tickets
non-refundable / with change fees
"flexiable" -- less change restriction and some case refundable by with a fee.
fully refundable
The flight search tools can help to find appropriate fares but a read of full fare rules (or a validation by a phone agent) is highly recommended.