Seating assignments are done upon check-in only (Air China’s
policy). However, if you have a medical condition, you may contact Air
China directly at 1.800.986.1985 or 1.800.882.8122,
Monday-Friday, 8:30am-5pm Pacific Time for assistance. You may also
call either toll free number for special meal requests (such as
vegetarian meals). Also since it is a 12+ hour flight, a good neck pillow and loose clothes will help keep you comfortable during the flight.