TUI Airways asks for nothing in the first 28 weeks of an uncomplicated pregnancy. From week 29 you need a certificate issued within 14 days of departure stating single or multiple, the weeks, the due date and fitness to fly; fly home before week 37. Doctors on Mobi Doctor are available 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.
For an uncomplicated pregnancy, no paperwork until you are 29 weeks. From then until the end of week 36 (32 with twins or more) TUI requires a medical certificate, issued and signed by a doctor or attending midwife within 14 days of departure, giving the type of pregnancy, the weeks, the due date and fitness to fly. Your return must land before week 37 begins, or 33 with multiples.
TUI is unusual in publishing a content checklist rather than a form. The certificate has to state whether the pregnancy is single or multiple, how many weeks pregnant you are, your expected delivery date, and that you are fit to fly. It must be issued and signed by a doctor or your attending midwife within 14 days of the departure date.
A letter that misses any of those four items is not what TUI describes, so check it before the consultation ends. Our fit-to-fly certificate page shows how a doctor on Mobi Doctor sets those details out.
British Airways, Ryanair and Jet2 want paperwork from week 28; TUI's wording is "from the beginning of the 29th week", and it treats the first 28 weeks as certificate-free. On the ordinary count, you need the certificate once you are 29 weeks pregnant, and 28 weeks + 6 days is the last certificate-free day.
The exception is complications: after any in the first 28 weeks, TUI asks for a certificate at that earlier stage too. And as "29th week" can be read two ways, anyone flying in week 28 itself loses nothing by carrying one.
TUI ties the certificate to the departure date only: it must be issued within 14 days of the day you fly out. It publishes no separate rule for the return, so on a 14-night holiday the same certificate is up to 28 days old on the way home and, on the published wording, still the document TUI describes.
Two practical points follow. Get the certificate in the fortnight before you leave, not at an earlier appointment. If anything changes abroad, doctors on Mobi Doctor are available over video wherever you are in the EU, daily 7am–11pm CET.
Before the start of your 37th week with one baby, the same boundary as "the end of the 36th week": the last day you can fly is 36 weeks + 6 days, and 37 weeks + 0 days is a day too late. With multiples the return must land before week 33 begins, so 32 weeks + 6 days is the final day.
The NHS notes that the chance of going into labour is naturally higher after 37 weeks, around 32 weeks with twins, which is exactly where TUI draws its lines.
Then TUI wants a certificate even inside the first 28 weeks. Its certificate-free period covers an uncomplicated pregnancy only; after a complication, a doctor or midwife must confirm you are fit to fly.
That confirmation is a medical judgement, not a formality. A doctor on Mobi Doctor will ask what happened, what treatment followed and how you are now; where clinically appropriate they issue the certificate, emailed after the consultation, and if flying is not advisable they can provide a not-fit-to-fly letter for your insurer instead.
TUI's rules sit between those of its UK rivals. Its 14-day window is twice Jet2's 7 days, and it carries you a week longer than Jet2 or easyJet, matching British Airways at 36. Unlike BA and Ryanair it has no form, so any properly worded letter works but the wording is your responsibility; use the checklist above. The count applies to the return as strictly as to the outbound, hence TUI's phrasing about flying home. All 30 airlines are compared in our flying while pregnant guide.
| Letter or certificate required from | The beginning of week 29 (earlier after complications) |
| Last week you can fly, single | Week 36; home before week 37 starts |
| Last week, twins or more | Week 32; home before week 33 starts |
| Letter must be issued within | 14 days of departure |
| Own form | None; a content checklist instead |
| Who can sign | Doctor or attending midwife |
| Source checked | TUI, safe flying during pregnancy page, 24 September 2026 |
Not in the first 28 weeks of an uncomplicated pregnancy. From the beginning of week 29 you need a medical certificate issued within 14 days of departure; after complications you need one earlier.
To the end of week 36 with one baby, so 36 weeks + 6 days is the last flight day, and to the end of week 32 with more than one. TUI expects you home before week 37, or 33, begins.
Yes, with a certificate, on any day up to 36 weeks + 6 days. The flight home must also fall before the start of week 37, so a holiday ending in week 37 is not possible with TUI.
Yes, with a medical certificate, because TUI carries a multiple pregnancy to the end of week 32. Your return must land before week 33 starts; of the UK airlines we compare, only Jet2 allows multiples a week longer.
Issued and signed within 14 days of your departure date. TUI sets no separate limit for the return flight, so a certificate dated in the fortnight before you fly out covers a standard holiday.
No. TUI lists what the certificate must contain instead: single or multiple pregnancy, weeks of pregnancy, expected delivery date and confirmation that you are fit to fly, signed by a doctor or attending midwife within 14 days of departure.
General information, not medical advice — always confirm with your airline before you travel.
