The pregnancy travel guide that gives the specific medical information the travel advice websites summarise and the pregnancy forums speculate about: the airline no-fly rule (most airlines: after 36 weeks for single pregnancy, after 32 weeks for multiple pregnancy — the specific restriction that varies by airline and that requires the written medical clearance between weeks 28-36 on most carriers), the Zika virus destination list (the destinations where the Zika risk to the developing foetus is sufficient that the WHO and the UK FCDO advise against travel during pregnancy), the specific trimester windows that give the best travel experience (the second trimester (weeks 14-28) is the medical and comfort consensus), and the specific travel preparation that the GP appointment 6-8 weeks before departure covers. This guide is the specific information without the specific fear and without the specific reassurance that is not medically warranted.
Reading time: 8 minutes | Last updated: 2026
The Trimester Travel Assessment
First trimester (weeks 1-13):
The most medically uncertain trimester and the trimester with the most severe nausea for approximately 70-80% of pregnant women. The miscarriage risk is highest in the first trimester (approximately 10-15% of confirmed pregnancies); the specific travel implication is that the first-trimester miscarriage abroad requires the medical access that the destination needs to provide.
The travel during the first trimester: possible, with the preparation. The destinations with good medical infrastructure (Western Europe, Japan, Australia, the US) give the medical access if needed. The destinations with limited medical infrastructure (rural Africa, remote Southeast Asia, the Maldivian outer atoll) require the specific risk assessment that the first trimester miscarriage probability warrants.
The nausea: the specific first-trimester nausea (the “morning sickness” that is misnamed because it is present throughout the day for most women experiencing it) makes the long-haul flight in the first trimester the specific physical challenge that the second trimester does not present.
Second trimester (weeks 14-27): The Travel Window
The medical consensus on the safest travel trimester is weeks 14-28 — the period when the miscarriage risk has reduced significantly, the nausea has typically resolved, the physical mobility is not yet significantly affected, and the majority of airlines allow travel without the medical clearance documentation.
The specific second-trimester travel opportunities: the babymoon (the final significant couple trip before the baby’s arrival), the long-haul destination that the third trimester and the first year of parenthood will delay, and the specific travel freedom that the second trimester gives before the physical constraints of the third arrive.
Third trimester (weeks 28-40):
The third trimester brings the airline restrictions (check the specific airline policy at the booking stage — not after), the reduced physical mobility, and the specific increased risk of the preterm labour that the medical infrastructure at the destination needs to be able to manage.
The no-fly guidance (the UK FCDO and the RCM — the Royal College of Midwives): most airlines restrict travel after 36 weeks for a single pregnancy and after 32 weeks for multiple pregnancies. Between weeks 28 and 36, the majority of airlines require the written medical clearance from the GP or the midwife confirming the due date and that the pregnancy is without complications.
The Zika Risk Destinations
The Zika virus (the arbovirus transmitted by the Aedes mosquito) is associated with microcephaly and other severe neurological conditions in babies born to women infected during pregnancy. The UK FCDO advises against non-essential travel to areas with active Zika transmission during pregnancy (and for 3 months before attempting to conceive, for both partners).
The current Zika-risk areas (check the current list at fitfortravel.nhs.uk/home/diseasepages/zika-virus — the risk areas change and the guide cannot give a current static list):
The areas with current Zika risk include parts of Central and South America (Brazil, Colombia, Mexico), the Caribbean, Southeast Asia (Thailand, the Philippines, Indonesia), and parts of West Africa. The absence of a destination from the news cycle does not mean the absence of risk — check the NHS fitfortravel site for the current status.
The Flight Preparation
The deep vein thrombosis (DVT) risk: Pregnancy increases the DVT risk, and the long-haul flight increases it further. The specific mitigation: the compression socks (Class 1, 15-20mmHg — full detail in Best Compression Socks for Flying 2026), the aisle seat (the movement every 90 minutes), and the hydration (250ml of water per hour of flight). The specific GP or midwife consultation before the long-haul flight in the second trimester gives the individual risk assessment.
The documentation: The medical letter from the GP or midwife (the due date, the confirmation of the uncomplicated pregnancy, the recommendation for travel) carried as the physical document alongside the pregnancy notes (the maternity book — the UK red book — that the midwife recommends carrying during travel for the medical information it contains).
The travel insurance: Confirm the policy covers the pregnancy-related events including the emergency delivery abroad, the premature labour, and the neonatal care. Many standard travel insurance policies exclude pregnancy beyond 28 weeks. The specialist pregnancy travel insurance (the Amtrust, the E-med Travel Insurance) covers beyond the standard 28-week limit.
