Travel is generally safe in an uncomplicated pregnancy, especially in the second trimester. It still needs some planning: get your doctor's approval first, check your airline's cut-off week, and know what to expect at security.
Get your doctor's approval first
Before booking anything, tell your doctor how many weeks pregnant you will be, how long the trip is, and where you are going. This lets your doctor flag anything about your pregnancy that changes the advice. If you are being monitored for a higher-risk pregnancy, travel only with your doctor's sign-off and follow any precautions they set.
Understand airline rules — and that they vary
Every airline sets its own policy, but most follow similar rules:
- A medical certificate confirming fitness to fly is often required after a certain stage of pregnancy — the exact week varies by airline
- Most airlines stop allowing travel beyond 36 weeks, though some domestic and international carriers set the cut-off earlier
- Policies can differ for single versus multiple pregnancies
Check your own airline's policy directly before booking. Its cut-off may differ from what "most airlines" do.
Travel choices that make the trip easier
- Choose direct flights where possible — less total travel time means less tiredness and less stress on a long trip
- Don't sit for too long — get up and move or stretch your legs periodically to help circulation, the same advice that applies to any long trip in pregnancy
- Dress for comfort — loose clothing and layers handle the unpredictable temperature of airports and cabins better than fitted outfits
- Carry snacks that settle well — nuts, fruit, and plain biscuits can help with hunger or nausea when meal timing is out of your control
- Avoid gas-forming foods before flying — cabin pressure changes can make bloating and discomfort more noticeable
- Keep medical records in your hand luggage, never in checked baggage — if you need care on arrival, you want these with you, not in transit
- Know your medical backup at your destination — have a hospital or doctor identified before you arrive, not after a problem comes up
Are airport security scanners safe?
Yes. Standard walk-through security scanners use very low-energy electromagnetic fields, not ionising radiation, and the exposure lasts only a few seconds. Your baby is protected inside the uterus, and passing through these checks does not harm the pregnancy. If you'd still rather avoid it, you can ask security staff for a manual pat-down instead — that's a reasonable request, not an overreaction.
Safe travel in pregnancy comes down to three things: your doctor's approval, your airline's actual rules, and a bit of planning for the trip itself.
Frequently asked
Which trimester is best for flying, if I have a choice?
The second trimester is generally the most comfortable time to travel. The higher-risk early weeks and early-pregnancy tiredness have usually passed. And you don't yet have the physical discomfort or airline restrictions of the third trimester.
Do domestic and international flights have different rules?
They can. International carriers often have their own documentation requirements in addition to the destination country's entry rules, so check both the airline's policy and any requirements at your destination, not just one or the other.
Is there a risk of blood clots from sitting on a long flight while pregnant?
Pregnancy itself raises the risk of blood clots somewhat, and long periods of sitting add to that risk for everyone, pregnant or not. Moving periodically, staying hydrated, and wearing compression stockings if your doctor suggests them are the standard precautions — ask your doctor if your specific trip and health history call for anything more.
What if I have a high-risk pregnancy — does that rule out flying completely?
Not automatically, but it changes the advice. Travel with a high-risk pregnancy should only happen with your doctor's explicit approval, and they may set conditions around timing, duration, or precautions that wouldn't apply to a low-risk pregnancy.