Go to the website of the airline. On the home page there should be a link to a page for checking in online. Look for "Online Check-In" or "Easy Check-In" or simply "Check-In." Most websites will allow you to check in 24 hours prior to your flight and up to 90 minutes before the flight departs.
Enter your reservation or booking number. If you don't have the number you can also try your name or frequent flyer number. If it is still not accepting these, you will have to check in at the ticket gate.
Confirm the itinerary and, if you didn't do so when you booked the tickets, make your seat reservations. Follow the prompts to the point where it gives you the option to print your boarding passes. Print the pass and keep it with your flight information. If you are making connections, you will need to print a boarding pass for each leg of your flight. Do not exit the system until it says you have completed the check-in.
Arrive at the airport in time to get through security. If you have bags to check, you may do so at the curbside service for your airline.
Arrive at the airport allowing enough time to check in and get through security. Find the ticketing area for the airline you booked. The check-in kiosks will either be near the ticketing agents or there will be a bank of kiosks along a wall opposite the ticketing agents.
Enter your reservation or booking number to locate your flight. You may also enter your name, frequent flyer number, or some kiosks allow you to swipe the credit card you used to purchase the flight to look up your flight information. If the system cannot find your information you will have to go to one of the ticketing agents.
Confirm the itinerary and, if you didn't do so when you booked the tickets, make your seat reservations. Follow the prompts through to the point where it gives you the option to print your boarding passes. Print the pass and keep it handy to check your bags and pass security. If you are making connections it will print a boarding pass for each leg of your flight. Do not exit the system until it says you have completed the check-in.
Find a ticketing agent under a sign that says "Online Check-In" or something similar. This agent will register your bags should you have any to check. You may also check them at the curbside service once you have your boarding passes printed.
