Flight Ticket Travel Agency Charter Airline Business Travel Charter Flight Travel Package Flight Ticket Reserve your seat when purchasing your tickets, up to 2, 3 or 4 days (see below) prior to departure. 2 days prior to departure for flights departing from North America 3 days prior to departure for flights departing from all Travel.com/Content/Security/default.asp">European cities (with the exception of the United Kingdom) 4 days prior to departure for flights departing from the United Kingdom