Most airlines offer an online check-in service which is usually open 24 hours before departure.
You will need to have the 6-digit airline confirmation code (example: L84RTL) from the airline, which you can find on the Itinerary that we sent to your e-mail when you made the reservation.
Depending on your airline, after checking in online you may be able to print your boarding pass, save it to your mobile phone, or pick it up from a kiosk at the airport.
Airport check-in usually opens 2-3 hours before flight departure.
You will need your boarding pass to go through airport security. Check with your airline for any other required documents
Plan to arrive at the airport at least 1-2 hours before your domestic flight, and at least 2-3 hours before your international flight.