Jet2 has the tightest paperwork timing among UK airlines. From week 28 to 35 inclusive (28 to 33 with twins) you need a fit-to-fly certificate, on Jet2's form or headed paper, signed within 7 days of departure and 16 days of your return. See a doctor on Mobi Doctor over video, usually within 15 minutes, to get one.
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.
Up to and including week 27, nothing. From week 28 to 35 inclusive (28 to 33 with twins or more) Jet2 will only carry you with a fit-to-fly certificate signed by a doctor or midwife within 7 days of departure and 16 days of the return date; certificates outside those dates are not accepted. From week 36, or 34 with multiples, travel is not permitted.
Most airlines that want a letter are relaxed about its date: British Airways says "as close to travel as possible", Ryanair's form suggests two weeks and TUI allows 14 days. Jet2 gives you 7 days before departure and adds a second clock: the certificate must also be dated within 16 days of your return.
The form spells out the consequence: certificates outside the stated dates cannot be accepted and clearance to travel will not be granted. Only Wizz Air, with 6 days, runs a shorter window in Europe.
Work back from the return date. Because the signature must be within 16 days of your return as well as 7 days of departure, a 14-night holiday leaves a 2-day window: sign no earlier than two days before you fly. A 7-night trip gives you the full 7 days.
On our reading, a trip longer than 16 days cannot be covered by a certificate signed before you leave, so you would need a second one abroad for the flight home; doctors on Mobi Doctor are reachable over video wherever you are in the EU.
Jet2 writes its rules as inclusive bands: up to 27 weeks, no restrictions. Weeks 28 to 35 inclusive need the certificate, so the last day you can fly with one baby is 35 weeks + 6 days; at 36 weeks + 0 days travel is not permitted. With more than one baby the band is 28 to 33 and the bar falls at 34 weeks.
That twins limit is a week later than British Airways, Ryanair, easyJet, TUI and Wizz Air, which stop multiples at 32. Weeks are counted on each flight date.
Either is accepted. Jet2's Pregnancy Fit to Fly certificate asks for your name, booking reference, both flight dates, single or multiple pregnancy, weeks pregnant on each flight, due date and any additional care needed. The medical professional confirms that, based on the medical notes, you appear fit to travel, then adds name, title, signature and date stamp; incomplete forms are invalid.
Or use a doctor's or midwife's letter on headed paper with the same dates. The form's medical section can be completed by a doctor on Mobi Doctor after a video consultation, where clinically appropriate, daily 7am–11pm CET (see our fit-to-fly certificate page).
Jet2's rules in one table, as published on 24 September 2026. The two dates in the validity row are the ones people miss: a certificate that is perfectly fine for the outbound flight can be too old for the return. On the same routes, easyJet shares the week-35 limit but wants no certificate at all, while Ryanair and British Airways carry you a week longer with a form of their own. Every airline is in our flying while pregnant guide.
| Letter or certificate required from | Week 28 (28–35 inclusive) |
| Last week you can fly, single | Week 35; not permitted from 36 weeks |
| Last week, twins or more | Week 33; not permitted from 34 weeks |
| Letter must be issued within | 7 days of departure and 16 days of the return |
| Own form | Jet2 Pregnancy Fit to Fly certificate (PDF), or a headed-paper letter |
| Who can sign | Doctor or midwife, signed and stamped |
| Source checked | Jet2 FAQ and certificate, 24 September 2026 |
Jet2's pregnancy rules describe no separate route for complications. The form asks whether additional medical care or treatment has been required during the pregnancy, and the practitioner's confirmation is based on your medical notes, so the decision rests with whoever signs.
If a doctor concludes you are not fit to fly, Jet2's certificate cannot be completed, and a not-fit-to-fly letter for your insurer can be issued instead where clinically appropriate. The NHS advises discussing any complications with your midwife or doctor before you fly.
Yes, from week 28 to 35 inclusive with one baby, or 28 to 33 with more than one. It must be signed within 7 days of departure and 16 days of your return, on Jet2's form or headed paper.
Up to and including week 35 with a single pregnancy, so the day you are 35 weeks + 6 days is the last possible flight. From 36 weeks travel is not permitted. With twins or more the last week is 33.
No. Jet2's table says 36 weeks or greater, travel not permitted, and a certificate does not change that. Ryanair, British Airways and TUI carry single pregnancies to the end of week 36.
Yes, with a fit-to-fly certificate, because Jet2's multiple-pregnancy band runs from 28 to 33 weeks inclusive. From 34 weeks travel is not permitted. Most other airlines, easyJet and Ryanair included, stop twins at 32.
Signed and dated within 7 days of your departure and within 16 days of your return date. Jet2 states that certificates outside those dates cannot be accepted, so date it late in the week before you fly.
A certificate signed before departure cannot then be within 16 days of your return, so on our reading you need a second certificate abroad for the flight home, dated within 16 days of it. Confirm with Jet2 before you travel.
General information, not medical advice — always confirm with your airline before you travel.
