When is the best time for traveling during pregnancy?
The best time for a trip is the second trimester. During the second trimester, the nausea of the first weeks of pregnancy has passed, you won’t have the fatigue that can come in the later stages, and your belly will still be small enough to get around fairly easily.
Most airlines would ask you to carry a letter from your doctor or midwife stating how many weeks pregnant you are when flying. EBCOG recommends that such a letter also include:
Note that most airlines allow pregnant women to fly only up to 37 weeks of gestation (32 weeks for twin pregnancies).