Precautions

• There is an increased risk for miscarriage and ectopic pregnancy (implanting of the egg outside the uterus) during the first trimester. The Mayo Clinic advises the mother to have arranged for medical care wherever she may be traveling. Verify the integrity of blood banks at the destination(s) in case a transfusion is required in an emergency. Carry medical records on board the plane and them available during the trip.
  
  

Before Travel

• The Mayo Clinic recommends consulting with the doctor before air travel in the first trimester. The doctor will be able to conduct any interviews or exams to ensure that no problems are present and that there are no signs of any potential problems present. The doctor may even recommend delaying a trip until the third month. Keep a list of emergency contacts on hand during the flight and the entire trip, including the attending physician.
  
  

Tips for the Trip

• Some women may have difficulty when flying during the first trimester. Morning sickness can be problematic, although this is not necessarily a risk for any serious health problems even when traveling. Occasionally, changes in altitude and air pressure affect the mother, including causing some unusual bleeding. If this happens, seek medical care upon arrival to rule out any possible complications.
  
  

Additional Air Travel Tips

• When you are traveling make sure to check with the specific airline for their regulations and rules for their pregnant passengers. Remember that these rules will vary from company to company so make sure to ask about them before booking. While on your trip one way to improve circulation is to get up and walk at least once 30 minutes. Because of the need for a pregnant woman to move around the airplane it is best to book an aisle seat to make things easier to maneuver. Staying hydrated is important so be sure to drink water and other fluids often on the airplane.
  
  

Other Advice

• According to the American Pregnancy Association, travel is a concern for some obstetricians relative to the health of the mother and the baby, if there aren't sufficient medical facilities in case of an emergency. A flight that involves crossing a large body of water may be problematic in this way. Above all, the condition of the mother at the time of travel will be the best indication of whether it is advisable or not.
  
  

Health Awareness

• The most important part of pregnancy is monitoring the health of the mother and the baby. This includes being aware of any changes in discharges, physical condition and unexpected symptoms of pain or bleeding. Seek the advice of a qualified medical professional before traveling to make sure that the mother and the baby are capable of withstanding the rigors of travel.