hi, i flew to Cyprus when i was 21 weeks pregnant with my last baby, the airline had a policy that i couldn't fly with them if i was over 30 weeks pregnant i think it was, so i had to make sure my return flight home was before that! not because its not safe but because they dont want the risk of you going into labour on their flight! i think some airlines have different policies though so your better checking with your airline. hope this helps Xx
You may have to check with the airline for their policy on flying when pregnant & your dr. Some will make you have a drs note before they will let you on the plane.