It is entirely safe to travel while pregnant, depending on how far along you are. The best and safest time to travel when you are pregnant is during your second trimester, from 14 to 28 weeks. This time is when you will feel at your best, and when risks are at their lowest. Travelling too early while pregnant is risky because this is when miscarriages can be more common. After the 36-week mark, health care professionals strongly advise against travelling or flying, and some airlines won’t allow this anyway.