Depending on availability, most paid bookings can be upgraded by requesting Myflightpal travel experts. You can upgrade at the time of reservation or afterwards. Only the lowest economy (World Traveller) fares are ineligible for an upgrade. You can upgrade to the next cabin on a reward flight if that cabin is still vacant. You can also upgrade to Business Class by using British Airways Executive Club Gold Upgrade Vouchers. Call Myflightpal to learn more about upgrades and offers.