1. 1Visit alaskaair.com or open the Alaska Airlines app.
2. 2Enter your last name and 6-digit confirmation code.
3. 3Add and pay for any checked bags.
4. 4Change or upgrade your seat assignment if desired.
5. 5Save your boarding pass to your mobile wallet or print it.
6. 6If checking bags, use the self-tag station at the airport.

Booking confirmation code (6 digits), passport for international flights, and any required visas or travel documents. Minors traveling internationally without both parents may need a signed letter of consent.

Seat selection and changes are available during online check-in. You can also upgrade to Premium or First Class if available. Saver fares may have limited seat selection options.

International travel documents must be verified before check-in. You can upload and verify documents in the Alaska app up to 72 hours before your flight. Passports and APIS information are required.

Groups of 10 or more traveling together can get advance seat assignments and unlimited free name changes up to three days prior to departure. Group check-in can be managed online or via the group desk.

1. 1'Unable to verify international documents' - You may need to verify them in person at the airport.
2. 2'Check-in unavailable' - Ensure you are within the 24-hour window or check if your flight is operated by a partner airline.
3. 3'Seat selection locked' - Saver fare passengers may have seats assigned at the gate if none are available during check-in.