Bring a sweater and dress in layers in case the plane's air temperature is too warm or too cool. Spend a few minutes every hour or so walking and stretching to avoid cramps and back pain and to increase circulation. Moisturizing your hands and face can help refresh you as well. Request a special low-fat meal in advance of the scheduled departure date. These meals are not only healthier, but fresher as well since they're made nearer to take-off time.
Experts usually recommend the second trimester as the best time to schedule air travel.
By the fourth to sixth month, most women are accustomed to the changes of pregnancy, but aren't too large to be uncomfortable or too close to their due dates. Often, obstetricians or midwives recommend no air transportation by the seventh month. Airlines usually allow women to fly up until the last month of pregnancy, but this is not advised for women who have a history or risk of pre-term labor. Women who plan to fly close to their due dates should check the airline regulations and bring copies of their prenatal care records, including their due date, just in case. Infants can do very well on plane trips.