Generally, it is considered safe for a pregnant lady travel in flight before 36 weeks. Moreover, it also depends on the state of your pregnancy and the health care provider’s guidance. You must check the airline’s guidelines for pregnant ladies, which might vary with different destinations and airlines. For instance, some international flights prevent the travel of a pregnant lady after 28 weeks. Most airlines permit pregnant ladies to fly within the U.S in the third trimester before the 36th week.