Lot Polish Airlines online check in LOT checking in Arriving at the airport, either at the counter or online, to confirm your reservation, acquire a boarding card and check in your luggage if necessary, is standard procedure for Polish Airlines. Airlines workers assist travellers at the airport counter, while online check-in allows passengers to do so in advance via the airline's website or mobile app. Passengers are required to provide identity, travel documents, and flight information. You'll go through security and immigration after check-in before boarding your flight. Arriving early is critical for a smooth check-in process, especially for foreign flights.