Can You Fly While Pregnant?
Yes — flying is generally safe in a healthy pregnancy, usually up to about 36 weeks for one baby (earlier for twins).
The full answer
Flying doesn't harm a healthy pregnancy — airport security scanners are safe, and the cabin radiation on occasional flights isn't a concern. The real limits are about timing and comfort. Most airlines allow flying up to around 36 weeks for a single pregnancy (about 32 weeks for twins), and from roughly 28 weeks many ask for a letter confirming your due date and that you're well. The main medical point is that long flights raise the risk of blood clots (DVT), which pregnancy already increases — so move around regularly, do calf stretches, stay hydrated, and ask your provider whether compression stockings are right for you. Always check your specific airline's policy and that your travel insurance covers pregnancy before you book.
How to fly safely
- Check the airline cut-off (often ~36 weeks single / ~32 weeks twins) and any letter rules
- Move around, stretch your calves, and stay hydrated to lower clot risk
- Ask your provider about compression stockings for long flights; carry your maternity notes
When to avoid: Avoid flying if you have complications (recent bleeding, pre-eclampsia, waters breaking early, signs of early labour, or severe anaemia) — check with your provider first.
Flying by trimester
| Stage | What changes |
|---|---|
| First trimester | Flying is generally considered safe in an uncomplicated pregnancy. Nausea and tiredness can make early travel unpleasant, which is why mid-pregnancy is usually suggested as the easiest time to fly. |
| Second trimester | Often described as the easiest window for travel — nausea has usually settled and you're not yet near airline cut-offs. Movement and hydration matter on longer flights because pregnancy raises clot risk. |
| Third trimester | Airlines set their own limits, commonly around 36 weeks for single pregnancies and earlier for twins, and many ask for a letter from your provider after a certain point. Check the specific airline's policy well before booking. |
Common questions about flying in pregnancy
Until when can I fly while pregnant?
Airlines commonly restrict travel from around 36 weeks in a straightforward single pregnancy, and earlier for multiples, often requiring a letter from your provider beforehand. The policies vary between carriers, so check the one you're flying rather than assuming.
Is flying safe for the baby?
In an uncomplicated pregnancy it's generally considered safe. Cabin pressure and normal flight radiation exposure aren't regarded as a problem for occasional travel. Pregnancy complications change the calculation, which is why it's worth confirming with your provider.
What should I do on a long flight?
Move regularly, stay hydrated, use an aisle seat if you can, and consider compression stockings — pregnancy increases clot risk and long periods of sitting add to it. Your provider can advise if you have other risk factors.
How flying fits your own pregnancy is worth a quick check with your midwife or provider. The general rules on overheating, falls and exercise are in our pregnancy safety guide, and you can track your pregnancy with the How Far Along Am I? calculator and the week-by-week guide.
Frequently asked questions
- Can you fly while pregnant?
- Yes — flying is generally safe in a healthy pregnancy, usually up to about 36 weeks for one baby (earlier for twins). Flying doesn't harm a healthy pregnancy — airport security scanners are safe, and the cabin radiation on occasional flights isn't a concern. The real limits are about timing and comfort. Most airlines allow flying up to around 36 weeks for a single pregnancy (about 32 weeks for twins), and from roughly 28 weeks many ask for a letter confirming your due date and that you're well. The main medical point is that long flights raise the risk of blood clots (DVT), which pregnancy already increases — so move around regularly, do calf stretches, stay hydrated, and ask your provider whether compression stockings are right for you. Always check your specific airline's policy and that your travel insurance covers pregnancy before you book.
- Why is flying considered safe in pregnancy?
- Flying doesn't harm a healthy pregnancy — airport security scanners are safe, and the cabin radiation on occasional flights isn't a concern. The real limits are about timing and comfort. Most airlines allow flying up to around 36 weeks for a single pregnancy (about 32 weeks for twins), and from roughly 28 weeks many ask for a letter confirming your due date and that you're well. The main medical point is that long flights raise the risk of blood clots (DVT), which pregnancy already increases — so move around regularly, do calf stretches, stay hydrated, and ask your provider whether compression stockings are right for you. Always check your specific airline's policy and that your travel insurance covers pregnancy before you book.
- When should I avoid flying during pregnancy?
- Avoid flying if you have complications (recent bleeding, pre-eclampsia, waters breaking early, signs of early labour, or severe anaemia) — check with your provider first.
Sources
This answer was checked against the following public guidance. Advice can differ between countries; your midwife, doctor or pharmacist can apply it to you.