OneTravel has negotiated many different types of agreements with different airlines; thus, the rules and restrictions for exchanges and cancellations vary greatly if allowed at all. When allowed, airlines require that they collect a fee for the exchange plus any difference in fare when necessary. Exchange fees start at $125 USD and go as high as $350 USD. Your exchange agent can tell you when you call.
They must insist, however, that you do not book an itinerary for the exchange. Please keep in mind that all exchanges must be on itineraries provided by the same airline that issued the original ticket. In some cases, the airline may restrict or deny exchanges requested with as few as seven days before departure.
Once you are prepared to give their exchange agent the new itinerary, please call them at (866) 883-0908. They are open 24/7. To expedite this process, please have your old ticket and/or file number with you as well as the new itinerary you wish to book.