1. 1Visit ceair.com or open the China Eastern app.
2. 2Select 'Seat Selection & Check-in'.
3. 3Enter your ticket number or PNR and passenger details.
4. 4Select your preferred seat.
5. 5Confirm your details and complete check-in.
6. 6Print your boarding pass or save it to your mobile device.

Ticket number or PNR, valid passport for international flights, visa if required, and entry documents for the destination country.

Seat selection is available during online check-in. In rare cases like aircraft changes, seats may be reassigned.

Passport and visa information must be verified. Passengers flying to the US must undergo additional security screening for electronic devices larger than a smartphone at the boarding gate.

Group check-in is generally supported for passengers on the same booking, but infants cannot be checked in online. Passengers needing special services must check in at the airport.

1. 1'Cannot check in online' - May be due to traveling with an infant or needing special services; check in at the airport.
2. 2'Invalid identification' - Ensure your name matches your ID exactly; passengers with rare characters may need airport check-in.
3. 3'Check-in canceled' - You can only cancel online check-in up to 3 times per flight.