Check-in on Tailwind Airlines flights is done exclusively at the airport.
Check-in at the airport
Due to the fact that tickets cannot be purchased separately from the airline, but flights are always part of a package from the tour operator, check-in is only offered at the airport.
Check-in counters open 120 minutes before departure and close 45 minutes before departure. For exotic destinations, the rule is 180 - 60 minutes before departure.