Flying with Ryanair SOF Terminal of Sofia Airport is a delight thanks to their quick and easy check-in procedure. Travelers have two options for checking in: use the terminal’s designated Ryanair check-in desks or check in online up to 48 hours before departure. Conveniently situated near to the check-in counters, baggage drop facilities provide a seamless beginning to your trip. To beat the rush and have a simple check-in process, arrive early. This will ensure that your Ryanair trip is enjoyable.