If you're flying with Alaska Airlines, it's important to know when to check in so your trip starts smoothly. Alaska Airlines allows passengers to check in online starting 24 hours before the scheduled departure time, and this option stays open until 1 hour before the flight. You can complete online check-in using the Alaska Airlines website or mobile app by entering your confirmation code and last name. Once checked in online, you can pick your seat, confirm flight details, and download or print your boarding pass. This is a great option if you're traveling with only carry-on luggage, because you can go straight to security when you arrive at the airport. If you have checked baggage, you can still check in online and just use the bag drop counter, which is open during regular check-in hours.

For airport check-in, Alaska Airlines generally opens its counters 2 to 3 hours before domestic and international flights. Check-in at the airport closes 40 minutes before departure for domestic flights and 60 minutes before departure for international flights. It is strongly recommended that passengers arrive at the airport at least 2 hours before domestic flights and 3 hours before international flights, especially during busy travel periods. This gives you enough time to check bags, go through TSA security screening, and reach your departure gate before final boarding.

Boarding gates typically close 15 to 30 minutes before takeoff, and late passengers may be denied boarding, even if they’ve checked in online. If you’re flying out of busy airports like Seattle-Tacoma International Airport (SEA) or Los Angeles International Airport (LAX), it’s even more important to arrive early to account for long security lines. Alaska Airlines MVP Gold, 75K, and First Class passengers have access to priority check-in lanes, helping to speed up the process.

If you need extra help—like if you're traveling with infants, require wheelchair services, or are checking oversized items—it’s a good idea to arrive earlier than the minimum recommended time. Also, some airports may have different rules or longer processing times, so it’s always smart to check specific airport details on the Alaska Airlines website before travel.

In summary, you can check in online for Alaska Airlines flights 24 hours to 1 hour before departure, while airport check-in counters usually open 2 to 3 hours before the flight and close 40 to 60 minutes before takeoff depending on whether your flight is domestic or international. To avoid stress and make your travel day easier, aim to arrive at the airport early and complete check-in in advance if possible. Whether you're flying within the U.S. or abroad, following Alaska Airlines’ check-in guidelines ensures you get through the airport quickly and have a smooth boarding process.