關于怀孕坐飛機

Nadal

SIA allows expetant mother of single pregnancy up to 35 weeks,

I copy the followings from SIA website for your reference.   You might try to get similar infor from China Air

"Expectant Mothers
It is important that you inform your gynaecologist of your proposed travel plan and obtain medical guidance before making a reservation.

Expectant mothers must also obtain a medical certificate, issued by your attending gynaecologist, stating your fitness for travel, the number of weeks of pregnancy and Estimated Date of Delivery. Our Reservations officers may request for the medical certification at the time of booking. If the booking and departure dates are more than one month apart, a new certificate should be issued (by your attending gynaecologist) not more than 3 days before departure. This certificate will have to be presented at check-in when requested.

For uncomplicated single pregnancies, Singapore Airlines restricts expectant mothers from travelling beyond the 35th week of pregnancy. For uncomplicated multiple pregnancies, Singapore Airlines restricts expectant mothers from travelling beyond the 32nd week of pregnancy."

I guess letter issued by gynae in China shall serve the same purpose.

I just checked my passport, I took China Southern air at 31th week, no question asked by check-in counter staff or cabin crew, they did not even ask for the letter.  That was an one hour flight though.