Research airlines that fly to your destination. Call the customer service departments to see which airlines offer open-ended return flights; some airlines don't offer this service. Be aware that airlines that do offer this service will require you to call rather than book an open-return ticket online.
Compare prices. Most airlines charge administrative fees and price the ticket at a higher rate for the convenience of an open return. Provide the necessary information to obtain your ticket once you have made a decision on your airline.
Enjoy your vacation, but call the airline prior to ending your trip to see if there is available seating. Travelers with confirmed seats have priority.
