I just got back....i was fine! I was so scared like you bout she was fine there and back and it was a 2 hr flight each way
Most airlines let you fly until 36 weeks
I am due to fly at 33 and 35 weeks...there's no danger to baby, just airlines want a doctor's note in case you go in to labour in the sky, but very unlikely at 27 weeks if you are having a normal pregnancy - just as much chance as on the ground! you'll be fine
I just flew at 27 weeks and I was ok. I don't currently have a doctor but check with yours if you do to be on the safe side!