18th January 2007 09:29
This was on eumom.com:
Air
Air travel is usually fine during early pregnancy, although in late pregnancy it may not be advisable in case you go into labour while on the plane, or while away from home. You should also check with the airline you intend to use before booking your flight: some will not allow you to fly after a certain stage of pregnancy or will request a medical certificate, or you may need a letter from your doctor.
On most airlines, women who are over 34–36 weeks pregnant aren't allowed to fly because of the risk of thrombosis and early delivery.
If you do fly, make sure that you drink plenty of water to prevent dehydration, and try to eat as lightly as possible as you may find that you are more susceptible to travel sickness. Earplugs and eye masks may also be useful if you need to sleep.