Croatia Airlines accepts an uncomplicated pregnancy without paperwork below 28 weeks. Between 28 and 36 weeks it asks for a doctor's approval no more than 7 days old, confirming the birth is not due within 4 weeks of departure. A doctor on Mobi Doctor can provide that approval over video, usually within 15 minutes.
Or plan by dates. Enter your due date and flight dates: the planner works out how pregnant you will be on each flight, whether that flight is allowed, whether a letter is needed for each leg, and the dates a letter must be signed between so it is still valid on the way home.
Copy the flight lines from the airline’s confirmation email (flight number, date, times) and paste them here. It is read in your browser; nothing is sent anywhere.
Enter your flight number and the dates above (or a route), and the planner fills in the airline — the operating carrier on a codeshare — and the flight time from the published schedule.
Or by route: to on the outbound date.
Choose a situation to see whether you need documentation.
Below 28 weeks with an uncomplicated pregnancy, you board Croatia Airlines without paperwork. From 28 weeks until you reach 36, you need a doctor's approval dated within the last 7 days, saying you are fit to fly and the birth is not expected within 4 weeks of departure. At 36 weeks you are no longer carried, and two 7-day rules sit either side of the birth: due within 7 days of the flight, or delivered less than 7 days before it, means no boarding.
Croatia Airlines calls the document a doctor's approval and spells out two requirements. It must be valid — not more than 7 days old on the day you fly — and confirm that the birth will not occur within 4 weeks of the start of the journey. The page names no signer beyond a doctor and no language, so an English letter from any licensed doctor works. A good approval also gives your weeks on each flight date, the due date, one baby or more, no complications, plus the signing doctor's name and registration number.
The airline frames the band as more than 28 and less than 36 weeks. The approval is needed from the day you turn 28 weeks, and the last day you can fly is 35 weeks plus 6 days; at 36 weeks exactly you are refused. That puts Croatia Airlines among the 9 airlines in this hub that stop at 35. The 4-week clause draws the same line a second way: at 36 weeks the due date is 4 weeks off, so the confirmation cannot be given. Count both flights, and if the return falls in week 36, move it. The flying-while-pregnant guide lists every airline's last week.
Two further refusals bracket the birth. If your baby is due within 7 days of the flight, you cannot board; if you gave birth less than 7 days before the flight, the same applies. The first duplicates the 36-week limit for most people; the second catches families flying home after an early birth abroad. The NHS advises checking that travel insurance covers pregnancy-related care, premature birth and the cost of changing your return date.
| Letter or certificate required from | Week 28 (more than 28 and less than 36 weeks) |
| Last week you can fly, single | Week 35 (35 weeks + 6 days; refused at 36 weeks) |
| Last week, twins or more | Not published — ask Croatia Airlines |
| Letter must be issued within | Not more than 7 days before the flight |
| Own form | None for pregnancy; special forms only if travelling for surgery or medical treatment |
| Who can sign | A doctor (no further detail published) |
| Source checked | Croatia Airlines expectant-mothers page, 24 September 2026 |
Croatia Airlines publishes nothing on multiple pregnancy, so do not assume the 35-week single limit applies; ask the airline in writing before booking; the NHS puts the naturally higher chance of labour at around 32 weeks for twins. On timing, only Wizz Air's 6 days is tighter than this 7-day validity, measured against each flight: on a 10-day holiday the outbound approval has expired by the return, so you need a second one abroad. Jet2 uses the same 7-day window but also requires the letter within 16 days of the return; Austrian Airlines and Lufthansa merely recommend one from week 28.
Time it against the flight: see the doctor within the 7 days before departure, and again within the 7 days before the return if the trip is longer. On Mobi Doctor an EU-licensed doctor usually joins the video call within 15 minutes, daily 7am–11pm CET, wherever you are in the EU — including from your hotel for the return leg. Where clinically appropriate, you receive a pregnancy fit-to-fly certificate containing the 4-week confirmation Croatia Airlines wants, emailed after the consultation. Video consultation €54 + €10 for the certificate, covering any other question too. See the certificate page and the airline rules hub for all 30 carriers.
Yes, from 28 weeks until you reach 36: a doctor's approval not more than 7 days old confirming fitness to fly and no birth expected within 4 weeks of departure. Below 28 weeks, an uncomplicated pregnancy needs nothing.
Until you reach 36 weeks, so the last day is 35 weeks plus 6 days, with the doctor's approval in hand from 28 weeks. That is a week earlier than most European carriers; count the return flight too.
No. Croatia Airlines carries passengers who are less than 36 weeks pregnant, so 36 weeks exactly is refused, and no doctor's approval overrides it. If the return would fall at 36 weeks, bring it forward or choose a carrier whose limit you still meet.
Croatia Airlines sets no twins figure, so nothing can be assumed. Ask the airline before booking. Most airlines with a published figure stop multiples at 32 weeks, and the NHS notes the chance of labour is naturally higher from around 32 weeks with twins.
Not more than 7 days old on the day of the flight. Because that applies to each flight, a return more than 7 days after the approval was signed needs a fresh one, obtainable over video from abroad.
Not within the first week: a mother who gave birth less than 7 days before the flight is not accepted on board. From day 7 the published restriction ends; carry your discharge papers and confirm with the airline.
General information, not medical advice — always confirm with your airline before you travel.
