1. 1Visit airfrance.us/check-in or open the Air France app.
2. 2Enter your booking reference (6 characters) or ticket number (13-14 digits) and last name.
3. 3Select the passengers you wish to check in.
4. 4Choose or confirm your seat assignment.
5. 5Add any extra baggage if needed.
6. 6Receive your boarding pass via email, download it to your smartphone, or print it.

Booking reference (6 characters) or ticket number (13-14 digits), passport for international flights, visa if required, and any necessary health documents.

Standard seat selection is free during online check-in (from 30 hours before departure) for Economy class. La Première and Business class passengers can select seats free of charge at the time of booking.

Passport and visa details may be required via APIS. You may need to verify your documents with the 'Ready to Fly' service, which checks health documents and regulatory paperwork like passports and visas before you arrive at the airport.

You can check in online whether traveling alone or in a group. For groups of 10 or more, Air France will freely seat your group 8 days before departure depending on availability, though seating together is not guaranteed.

1. 1'Unable to check in online' - May require document verification at the airport; use the 'Ready to Fly' service to upload documents in advance.
2. 2'Invalid passenger ID' - Ensure you are using the correct 6-character booking reference or 13/14-digit ticket number.
3. 3'Check-in not available' - You might be trying to check in too early (before 30 hours, or 24 hours for certain US departures).