Jet2 allow one small under-seat bag of 40 x 30 x 20 cm on every fare, and it comes on top of a 10 kg hand luggage allowance rather than instead of it. Read from Jet2's own baggage page on 14 September 2026 and rechecked monthly.
Free under-seat allowance, by airline
| Airline | Free under-seat bag | Checked | |
|---|---|---|---|
| easyJet , opens the airline's own baggage page in a new tab Free small cabin bag, 15 kg | 45 × 36 × 20 cm | Yes | 14 Sep 2026 |
| Ryanair , opens the airline's own baggage page in a new tab Free small personal bag | 40 × 30 × 20 cm | Exactly | 14 Sep 2026 |
| Jet2 , opens the airline's own baggage page in a new tab Free under-seat bag | 40 × 30 × 20 cm | Exactly | 14 Sep 2026 |
| TUI , opens the airline's own baggage page in a new tab Free personal item | 40 × 30 × 20 cm | Exactly | 14 Sep 2026 |
| Wizz Air , opens the airline's own baggage page in a new tab Free carry-on bag, 10 kg | 40 × 30 × 20 cm | Exactly | 14 Sep 2026 |
| British Airways , opens the airline's own baggage page in a new tab Handbag or backpack, last known | 40 × 30 × 15 cm | Overhead | 13 Sep 2026 |
Airlines set these allowances and can change them without notice. We are not affiliated with any airline.
About the British Airways row. BA have withdrawn the hand baggage allowances page we used to read, and now publish the figure through an interactive baggage calculator instead of on a page we can link you to. The figure shown is the last one we read from them, on 13 September 2026, and we have left it here because it is more useful than a blank. Treat it as the last known figure rather than a checked one, and confirm it in BA's own calculator before you fly.
This is the part worth knowing. On Jet2 the 10 kg hand luggage allowance at 56 x 45 x 25 cm, including wheels and handles, is included as standard on every fare. The 40 x 30 x 20 under-seat bag is on top of that.
Compare that with Ryanair and Wizz Air, where the larger bag only comes with priority boarding, or easyJet, where it is sold separately. On Jet2 you are getting two bags into the cabin without paying extra for either.
So the under-seat bag matters less here than it does elsewhere. It is still worth having the right size, because on a busy flight Jet2 may ask for the 10 kg bag to go in the hold, and what stays with you is whatever fits under the seat in front.
Their main baggage page says the under-seat bag must not exceed 40 x 30 x 20 cm. Their FAQ section says 40 x 30 x 15.
The baggage page is the current one. We read both, and we flag it here because a five centimetre difference in depth is the difference between a bag that goes in and a bag that does not.
If you want to be certain of never having the argument, buy to the shallower figure. If you want the allowance you are actually entitled to, buy to 40 x 30 x 20.
With 10 kg already going in the locker, the bag under the seat is the one you actually use during the flight. Laptop, book, charger, anything you want without standing up.
It is also your insurance. Gate staff can ask for larger cabin bags to be checked when a flight is full. Jet2 sell Guaranteed Cabin Luggage precisely because it happens. Whatever is under the seat stays with you either way.
Before you buy anything
People are asking
40 x 30 x 20 cm, one per passenger, included on every fare. Read from Jet2's own baggage page on 14 September 2026.
Yes. Jet2 include 10 kg of hand luggage at up to 56 x 45 x 25 cm, including wheels and handles, on every fare. The under-seat bag is in addition to it.
Because their own pages disagree. The FAQ section says 40 x 30 x 15 and the main baggage page says 40 x 30 x 20. The baggage page is current. Where we and Jet2 disagree, they are right, and the row in the table above links to their page.
On busy flights, yes. Jet2 say so themselves and sell Guaranteed Cabin Luggage as a way around it. Anything that fits under the seat in front of you stays with you regardless.
Jet2 state a size for it rather than a weight. The 10 kg limit applies to the larger hand luggage allowance.
