This sample is standard within the airline trade and is mirrored within the last value breakdown at checkout. Sometimes, codes additionally exclude certain fare varieties or promotional fares, additional limiting the low cost. Ethiopian Airlines upgrades are dealt with via a separate bidding course of, where you make a proposal for the next class and pay in case your bid is accepted—promo codes don't apply right here. If you try to enter a promo code throughout an improve attempt, you’ll either see no area for codes or receive an error message.