What is the check-in process for LOT Polish Airlines? LOT Polish Airlines check-in offers self-check-in options that mean less time spent at the airport: Web Check-in. Mobile Check-in. Automated check-in. Self-Check-in. Counter for check-in. Can you tell me what the check-in deadlines are for LOT Polish Airlines flights? Regardless of whether you checked in using a self-check-in option or...