Cabin Bag Weight Limits UK Airlines: Who Checks & Who Doesn't
The Short Answer
Most UK airlines publish cabin bag weight limits, but how strictly they're enforced depends entirely on the carrier. Budget airlines like Ryanair, easyJet and Wizz Air reserve the right to weigh your bag at any time and typically enforce a 10 kg or 15 kg limit. Full-service carriers like British Airways and Jet2 allow up to 23 kg but rarely weigh bags unless they look obviously overloaded.
If you're flying with just a free under-seat bag, weight checks are less common — but still possible on busy routes or at certain airports.
UK Airline Cabin Bag Weight Limits Compared
Here's how the main UK carriers stack up:
| Airline | Under-Seat Weight | Overhead Cabin Bag Weight | Weighed Often? |
|---|---|---|---|
| Ryanair | Not specified | 10 kg | Yes, selectively |
| easyJet | 15 kg | 15 kg | Yes, at busy gates |
| Wizz Air | 10 kg | 10 kg | Yes, frequently |
| Jet2 | Not specified | 10 kg | Rarely |
| British Airways | 23 kg combined | 23 kg combined | Almost never |
| TUI Airways | Not specified | 10 kg | Occasionally |
| Vueling | Not specified | 10 kg | Yes, at Spanish hubs |
British Airways is the most generous: your under-seat and overhead bags share a combined allowance of 56 × 45 × 25 cm, up to 23 kg, so you can distribute weight however you like. You can read more about how to use your British Airways allowance fully.
When Airlines Actually Weigh Cabin Bags
Budget Carriers (Ryanair, easyJet, Wizz Air)
These airlines weigh bags most often during:
- Peak summer and school holiday flights when bins fill quickly
- Boarding at smaller European airports where gate staff are more vigilant
- When you've paid for Priority or cabin bag add-ons — they want to ensure compliance
- Random spot checks at UK departure gates, especially Stansted, Luton and Gatwick
If your bag is over 10 kg, you'll typically be asked to remove items, repack, or pay a £70–£75 gate fee to move it to the hold. Wizz Air's gate fee sits around €65; easyJet charges roughly £48–£60.
Full-Service Carriers (BA, Jet2, TUI)
Jet2 and British Airways rarely weigh cabin bags unless the bag looks visibly stuffed or you're struggling to lift it. TUI sits somewhere in the middle — more relaxed than Ryanair, stricter than BA.
If you're flying Jet2 vs Ryanair, the difference in enforcement can save you stress and money.
Does the Free Under-Seat Bag Have a Weight Limit?
Officially, yes — but in practice, it's rarely enforced.
- Ryanair allows a 40 × 30 × 20 cm under-seat bag with no published weight limit, though the overhead cabin bag must stay under 10 kg.
- easyJet permits 45 × 36 × 20 cm, up to 15 kg for the free under-seat item.
- Wizz Air enforces 40 × 30 × 20 cm, up to 10 kg.
- British Airways and Jet2 don't usually weigh your under-seat bag at all.
If you're packing smart, a compliant under-seat bag like the Ryanair Underseat Cabin Travel Bag (40 × 25 × 20 cm) or the Easyjet Underseat Cabin Bag (40 × 30 × 20 cm) will keep you under the radar.
For tips on what fits inside, see our guide on how to pack a 4-day Lisbon trip in a compliant bag.
How to Avoid Weight Issues at the Gate
Distribute Weight Between Bags
If you're flying British Airways or Jet2, you can carry two bags with a combined weight of 23 kg. Put heavy items like shoes, toiletries and electronics in your under-seat bag, and keep clothing in the overhead locker bag.
Wear Bulky Items
Jackets, boots and hoodies don't count toward your cabin bag weight when worn. On budget carriers, this trick alone can save you a kilo or two.
Use Compression Packing Cubes
Compression cubes won't reduce weight, but they'll help you fit more into a smaller, lighter bag. A cube set works brilliantly for maximising a 40 × 30 × 20 cm under-seat bag. Read more in our article on packing cubes for cabin bags.
Check Your Airline's Actual Policy
Don't assume — verify. easyJet's rules differ slightly from Ryanair's, and Wizz Air enforces weight more aggressively than either. You can compare the latest rules on our baggage checker hub page or read specific guides like easyJet's 2026 hand luggage allowance.
What Happens If Your Bag Is Overweight?
You'll usually have three options:
- Remove items and repack — gate staff may let you redistribute weight into pockets or a coat.
- Pay the gate fee — typically £70–£75 for Ryanair, £48–£60 for easyJet, or around €65 for Wizz Air.
- Check the bag into the hold — you'll pay the gate fee, and the bag goes underneath.
British Airways and Jet2 rarely charge gate fees for compliant bags, even if they're a bit over. Oversized or visibly overstuffed bags may be moved to the hold at no extra cost on quieter flights.
Which Bag Should You Actually Buy?
If you fly Ryanair or Wizz Air frequently, stick to a 40 × 30 × 20 cm under-seat bag that's as light as possible when empty. The Cabin Backpack 40×25×20 (0.6 kg) — Black (40 × 25 × 20 cm) weighs 0.6 kg empty and leaves you maximum capacity for your belongings.
For easyJet, the Easyjet Underseat Cabin Bag (40 × 25 × 20 cm) sits well inside the slightly larger 45 × 36 × 20 cm allowance.
If you're flying BA or Jet2 and want to use both allowances, pair a soft under-seat bag with a structured overhead bag. See our full comparison in Best Underseat Cabin Bags UK (2026).
For a complete pre-flight checklist, including what not to pack, visit our hand luggage essentials guide.
FAQ
Q: Do Ryanair weigh cabin bags every time?
A: No, but they do weigh bags selectively — especially on busy routes, at certain airports, and when overhead bins are expected to fill quickly. If your bag exceeds 10 kg, you'll pay a £70–£75 gate fee.
Q: Can I carry a 15 kg cabin bag on easyJet?
A: Yes, as long as it fits within 56 × 45 × 25 cm and you've paid for cabin bag access (or hold a FLEXI fare or easyJet Plus membership). Both the under-seat and overhead bags can weigh up to 15 kg each.
Q: Does British Airways weigh hand luggage?
A: Almost never. BA allows two bags with a combined weight of 23 kg, and enforcement is rare unless your bag looks dangerously overloaded or you're struggling to lift it.
Q: What's the lightest cabin bag I can buy for Ryanair?
A: Look for a light soft-shell under-seat bag. The Ryanair Underseat Cabin Travel Bag and Cabin Backpack 40×25×20 Grey Trim — Blue both fit within the 40 × 30 × 20 cm under-seat allowance and leave you maximum capacity for your belongings.
Airline baggage rules and fees change frequently and can vary by route, travel date and when you book. Always check the airline's current official baggage policy before travelling.
Also worth reading: Do Wheels Count in Cabin Bag Size? How Airlines Measure Luggage
