Published: 12.06.2026
Updated: 16.06.2026

Flying While Pregnant: Recommendations and Risks

In general, a normally progressing pregnancy should not be an obstacle to flying.

However, there are exceptions that need to be known in order to avoid unnecessary complications or unpleasant situations. For example, each trimester requires slightly different conditions. So how should you approach flying during pregnancy?

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Flying During Pregnancy and the Associated Risks

Risk of Pressure and Changes in Oxygen Levels

At higher altitudes (above 1,800 m above sea level), the lower atmospheric pressure also means lower oxygen content. Reduced pressure is also present in the aircraft cabin. This fact could cause increased blood pressure and heart rate in more sensitive women. However, neither of these changes has any negative effect on the baby. If a pregnant woman experiences any discomfort, it can be addressed with an oxygen mask.

Risk of Thrombosis

A pregnant woman is more susceptible to developing thrombosis. There are two preventive measures. You can take special compression stockings for the journey and also walk around the aircraft regularly (every hour). This will help prevent the risk of thrombosis as well as unpleasant leg swelling. While seated, it is advisable to move your legs and toes as frequently as possible to promote blood circulation.

Mild Risk of Radiation

Everything around us is mildly radioactive, largely due to cosmic radiation. We are protected from this by the atmosphere and the Earth’s magnetic field. Once we ascend in an aircraft to an altitude above 8 km, a large part of this protective layer remains below us. As a result, we are exposed to a greater degree of cosmic radiation. However, a single flight cannot pose any risk to us under any circumstances — not even on a longer route.

Increased Risk of Miscarriage

If spotting or even bleeding occurs in your first trimester, it is better to postpone the flight. Pregnancy is most vulnerable during the first trimester. It is therefore more sensible to plan a holiday by air for the second trimester, when a pregnant woman generally feels her best. In any case, it is advisable to consult a doctor before travelling by plane.

Flying During Pregnancy – When It Is Better Not to Fly

If complications arise during pregnancy, flying can be dangerous. Air travel is also not recommended in high-risk pregnancies or in cases of severe fear of flying. Stress could cause serious health problems.

Avoid Flying When the Due Date Is Approaching

If a woman is healthy, there is no problem flying up to the 36th week of pregnancy. Most airlines will no longer allow air travel after this point.

A flight can accelerate labour and dangerous blood clots can also form. If a woman shortly before giving birth finds herself on the figurative list of “who should not fly”, this is not discrimination but simply a safety measure.

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General Overview of Flying During Pregnancy at Different Stages

1) Flying in the First Trimester

A flight should not endanger a healthy woman’s pregnancy even in the first trimester. Nevertheless, it is better to wait a few weeks and set off on holiday after the thirteenth week of pregnancy.

This is particularly advisable if the woman is suffering from nausea. Changes in pressure can further intensify these problems. The air conditioning or ventilation system may also cause discomfort.

2) Flying in the Second Trimester

It could be said that the second trimester is the ideal time for travelling during pregnancy. The risk of miscarriage or premature birth is small, the bump is also small, and pregnancy nausea has usually passed. The woman generally feels well.

3) Flying in the Third Trimester

As mentioned, flying should be safe up to the 36th week of pregnancy. After that, changes on the plane can trigger premature labour. The airline may also require the consent of your gynaecologist.

Always bring your maternity record with you. Some airlines may require it. Each airline has different requirements for its passengers. However, one general advantage applies to all passengers at Prague airlines — affordable parking near Prague Airport

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Is the Security Scanner Safe for Pregnant Women?

Yes, It Is Only a Metal Detector

Security scanners cannot cause any harm to you or your baby. Airports typically use detectors based on magnetic fields, very low radio waves or devices with minimal X-ray radiation to search for dangerous objects.

The amount is so small that it cannot in any way endanger foetal development. Before departure, make sure you allow sufficient time. The security check, luggage check-in and other necessities will all take some time. Find out how early to be at the airport before departure.

A Few Tips for Pregnant Women on How to Increase Comfort During a Flight

Sufficient comfort during travel is essential for a pregnant woman. It will help her avoid not only health problems but also stress. The parking price list at Prague Airport can help you decide when and from where to fly.

Do not forget to also pack clothing for the flight that is above all comfortable. It is not a bad idea to add a small blanket and a special pillow for cervical spine support to your carry-on luggage.

An Aisle Seat Is a Better Choice

Given that it is necessary to walk around from time to time, it is definitely better to choose an aisle seat. This ensures that you will not bother anyone by constantly getting up — especially on longer flights.

Plenty of Water

Staying hydrated is essential. Two principles apply here: drink plenty of water and go to the toilet regularly. This will help prevent urinary tract problems. Liquids on the plane are therefore crucial.

Choose a Seat Near the Toilet

A seat near the toilet is necessary not only because of frequent trips to the bathroom, but also so that you can step away at any time if nausea sets in. Suitable medicines for the flight can help with nausea. However, always consult your doctor when choosing them.

Summary: Flying During Pregnancy

Place your maternity record among your documents. Some airlines want proof of the duration of the pregnancy. After the 28th week, the airline may also surprise you with a request for a medical certificate confirming that you are fit to fly.

The certificate must not be more than six days old. After the 34th week, practically all carriers will require a medical certificate. If you have your own doubts about your health, it is better to postpone the flight to a more suitable time.

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