After 12 and before 25 weeks is generally the safest time to travel. This is called the second trimester. The first trimester (up to 12 weeks) is when you may be suffering morning sickness. There is also an increased risk of miscarriage during this time. However, there is no current evidence to support any link between flying and increased risk of miscarriage.

After 25 weeks (third trimester) there is a risk of an increase in blood pressure as well as the chance of giving birth prematurely due to stressful conditions or illness. Every pregnancy is different, so it is advisable to discuss any concerns with your doctor.

Check with your airline and insurance company that they will allow you to travel when pregnant. After 24 weeks, the airline may request a letter from your doctor stating your expected delivery date. All airline policies vary, but as a general rule you should be allowed to travel until 28 weeks of pregnancy, or 36 weeks for a short-haul (less than four hours) flight.

Women who have a high-risk pregnancy or a known health condition that could cause complications may not be allowed to fly in the last four weeks of pregnancy. Remember to take into account the date of your return journey and how this may affect travel plans.

When flying, drink plenty of bottled water, with no ice (as the air humidity is very low), sit in an aisle seat, move about a lot and wear compression stockings to avoid developing blood clots. (Symptoms of blood clots include swelling, pain, tenderness and redness especially at the back of the leg below the knee.)

Wear loose clothing, comfortable shoes, and adjust your seatbelt low over your pelvis.