Changing a flight after check-in: do not confuse it with changing a seat

Changing a flight after check-in: do not confuse it with changing a seat

That is a flight-change process, not merely a request for another seat. EVA also describes canceling online check-in before a late booking change within its stated check-in period, followed by checking in again after the change. These examples show why the next step depends on the carrier and transaction; they do not prove that every airline or fare permits the change you want. Before undoing check-in, review the flight-change options and any fare conditions shown for your booking. Ask how checked baggage or an imminent departure affects the request when those factors apply. After a successful change, complete the required check-in for the revised flight and use the newly issued travel information rather than relying on the old itinerary.