Pregnant women can fly safely, observing the same precautions for air travel as the general population. Because severe air turbulence cannot be predicted and the subsequent risk for trauma is significant should this occur, pregnant women should be instructed to use their seat belts continuously while seated.

For most people, flying at 5 weeks pregnant is considered perfectly safe, as the fetus is well-protected within the pelvic cavity at this early stage. Most obstetricians agree that commercial air travel does not pose a risk of miscarriage or harm to the developing embryo, provided the pregnancy is "low-risk." The primary challenges at 5 weeks are not about safety, but about comfort. This is often when "morning sickness" (nausea) and extreme fatigue begin to peak, and the dry, recirculated cabin air can exacerbate these symptoms. Dehydration is a major concern, so drinking double the usual amount of water is essential. There is also a slightly increased risk of blood clots (DVT) during pregnancy, so it is vital to wear compression socks and walk the aisle every hour, even on short flights. While the low-level radiation at cruising altitude is a common concern for expectant parents, the amount received during a standard domestic or international flight is considered negligible by the American College of Obstetricians and Gynecologists (ACOG). Always consult your own doctor before flying to ensure there are no specific medical reasons to avoid travel.