The moment of understanding usually comes at the gate. Someone directly ahead of you has a bag that looks nearly identical to yours — a standard 56×45×25 cm roller — and easyJet waves them through without a second glance. You reach the front. It's Ryanair. The agent has a bag sizer. Your bag doesn't fit it. That's £59 to check it at the desk — if there's still time — or leave it behind.
The confusion is understandable. Cabin baggage rules in 2026 vary more than at any point in aviation history, not because airlines can't agree on a sensible standard, but because they've deliberately diverged as part of their pricing strategies. The allowance that comes with your ticket is a commercial decision, not a physical one. Understanding what you've actually paid for — and what the carrier next to you on the same route gives their passengers — is the only defence against a nasty surprise.
Here is the 2026 state of play, airline by airline.
Why the rules vary so much
A decade ago, cabin baggage was essentially free on every carrier. Budget airlines changed that first, disaggregating the ticket price and selling each component — seat selection, checked luggage, cabin bag — individually. The result was a headline fare that looked far cheaper than it was, with the true cost assembled at checkout once you'd already committed to the route.
Since 2022, US legacy carriers have adopted the same model on short-haul domestic routes, and from 2024 they extended it to transatlantic basic-economy fares. Meanwhile, some full-service airlines have moved in the opposite direction, quietly improving their allowances to distinguish themselves from the budget tier. The landscape in 2026 is genuinely complex, with two passengers on the same codeshare flight legally entitled to completely different overhead bin rights depending on which version of the ticket they bought.
Budget European carriers
Ryanair
Ryanair's free allowance is the most restrictive of any mainstream carrier: one small personal bag measuring no more than 40×20×25 cm, which must fit under the seat in front. That's roughly the size of a large handbag or a small laptop backpack. A standard cabin roller does not fit.
To bring a full cabin bag (55×40×20 cm, max 10 kg), you need to add Priority boarding — which ranges from around £6 to £22 each way depending on route and season — or buy the “Cabin Plus” bundle. Priority also gets you first to the gate, which matters on busy flights where overhead bin space fills fast.
Enforcement is the strictest in the industry. Ryanair operates bag sizers at most gates and has gate agents whose explicit job is to check bags before boarding. An oversized bag is redirected to the hold at a fee that starts at £25 if paid online in advance and rises sharply at the gate. This is not a soft rule.
easyJet
More generous. Standard easyJet fares include one cabin bag (56×45×25 cm, no stated weight limit) and one additional small bag (45×36×20 cm). In practice, the cabin bag size limit is roughly the industry “maximum” for overhead storage, and easyJet do not weigh bags at check-in — they rely on whether the bag physically fits in the overhead.
Where easyJet diverges from Ryanair is bin-space guaranteed versus first-come. On standard fares there's no guarantee your bag will make it into the cabin — if the bins are full, it gets gate-checked to the hold for free. Flexi fares and “Up Front” seats include guaranteed overhead space. On busy routes and peak periods, gate-checking is a genuine possibility if you board last.
Wizz Air
Wizz Air's free allowance is one small bag (40×30×20 cm, max 10 kg) under the seat — slightly larger than Ryanair's free bag, but still nothing like a full cabin roller. A cabin bag (55×40×23 cm) requires either a Wizz Plus membership or a paid cabin bag add-on, typically £10–£25 each way.
Wizz enforces aggressively at Eastern European hubs — Budapest, Warsaw, Bucharest — where bag sizers are routinely deployed. Oversize bags are gate-checked at fees that match Ryanair's gate rate. On routes from the UK, enforcement is somewhat more variable, but the risk is real enough to pay for the add-on if you have a larger bag.
Jet2 and TUI
Both of these holiday-focused carriers take a more traditional approach. Jet2 includes one cabin bag (56×45×25 cm, max 10 kg) plus a small personal item on all fares. TUI's allowance is similar (55×40×20 cm, max 10 kg). Neither carrier enforces weight limits at the gate with any real consistency, and neither charges for cabin bags as an add-on. For leisure travellers, this is often the most frictionless experience in the budget tier.
Full-service UK and European carriers
British Airways
BA's cabin allowance is one of the most generous in European aviation: one cabin bag (56×45×25 cm) and one personal item (45×36×20 cm) on most fare types. The cabin bag has a nominal 23 kg limit — which is the same as their checked-bag limit and is effectively unenforced in the cabin. In practice, BA does not weigh carry-on bags. What matters is that it fits in the overhead bin.
The exception is “Hand Baggage Only” fares, which are Economy Light tickets that include cabin bag but not a checked bag. These fares are priced £20–£40 cheaper and are a genuinely good deal if you can pack into a cabin bag — you get the full 56×45×25 cm allowance either way. Euro Traveller (standard economy) and above also include checked luggage.
Lufthansa and Eurowings
Lufthansa mainline includes one cabin bag (55×40×23 cm, max 8 kg) and one personal item on all Economy fares. Unlike BA, Lufthansa does occasionally weigh bags — particularly at Frankfurt and Munich on busy long-haul routes. The 8 kg limit is real; a moderately packed roller and a full laptop bag can breach it.
Eurowings, Lufthansa's budget arm, reverts to the disaggregated model: cheapest fares include only a small personal item; a cabin bag costs extra. The fare names change periodically, so check at booking rather than assuming.
Long-haul carriers
Gulf carriers: Emirates, Qatar Airways and Etihad
The Gulf carriers are consistent in their approach and stricter than most European airlines on weight. Emirates Economy allows one cabin bag (55×38×20 cm) plus a personal item, with a hard 7 kg limit across both items combined. Qatar Airways' Economy allowance is similar in dimensions with a 7 kg combined limit. Etihad Economy allows a slightly larger cabin bag (50×40×25 cm) also at 7 kg.
These limits are enforced at check-in at Dubai, Doha and Abu Dhabi. Travellers who regularly exceed them buy into Business class or pay for an extra checked bag rather than risk the cabin-bag conversation. The 7 kg limit sounds tight but is achievable with deliberate packing — see our packing list tool to check your load before you arrive at the airport.
US carriers on transatlantic routes
Delta, American Airlines and United all introduced basic-economy fares for transatlantic routes from 2024. On these tickets, only a personal item (fitting under the seat) is included; a cabin bag in the overhead bin requires an upgrade to main-cabin or above, or a paid add-on. Main cabin and above on all three carriers includes one cabin bag (typically 56×35×23 cm) and one personal item with no weight limit stated.
If you're booking a transatlantic flight on a US carrier, check which fare tier your ticket is before assuming you have overhead bin rights. The cheapest-looking fare from London to New York may come with far less than a standard BA economy ticket for a similar price.
The personal item almost everyone forgets
Almost every airline that allows a full cabin bag also allows a separate personal item to go under the seat — a handbag, laptop bag, small backpack or similar. The typical maximum dimensions are 45×36×20 cm. Most travellers don't know they're entitled to this second item, or they bring something too large and then have to negotiate with the crew.
The practical play is to use the personal item as a tech and essentials bag — laptop, cables, valuables, anything you want accessible during the flight — and keep the overhead cabin bag for clothes and bulkier items. This split means you never need to access the overhead bin mid-flight, which reduces friction with your seat neighbours and leaves the overhead more available for people boarding later.
Worth knowing
The most common carry-on bag sold in UK luggage shops is 56×45×25 cm — it fits BA, easyJet, Jet2 and TUI as a free allowance. That same bag will get you gate-checked on Ryanair and Wizz unless you've paid for cabin bag priority. Check your carrier before you check the bag.
How enforcement actually works in 2026
The gap between the written rule and what actually happens at the gate is large, and varies enormously by carrier and airport. A few reliable patterns:
- Ryanair and Wizz Air enforce consistently at the gate with bag sizers. This is the rule, not the exception.
- easyJet enforces size less rigidly but does gate-check bags on full flights when overhead bins are predicted to fill — this is not a penalty, just logistics, and the bag travels free to the hold.
- British Airways and Lufthansa enforce size at check-in if a bag is obviously oversized, but rarely weigh cabin bags at UK airports. Weight enforcement at European and long-haul hubs can be stricter.
- Gulf carriers enforce weight at check-in at their home hubs. At UK airports, enforcement on departure is inconsistent, but don't assume you'll get away with it.
- Gate-checking — when the cabin bins are full and a bag is taken from you at the door — is almost always free. It happens on almost every full flight on every carrier. Your bag goes to the hold and comes back on the baggage belt at the destination. It is not punishment; it is normal.
The situation where passengers get caught is when they've brought the wrong size bag for the carrier, not when the bins happen to be full. Know your carrier's template before you pack.
Getting the most out of your allowance
Compression packing cubes are the single most effective way to reduce volume without reducing what you bring. A set of four cubes in a standard cabin roller will typically let you carry what used to require a 23 kg checked bag — on a week's trip with careful packing. The carry-on-only approach also saves 20–30 minutes per journey at the baggage belt, eliminates the risk of lost luggage, and on budget airlines avoids the checked-bag fee entirely.
For the full breakdown of how to pack a week's worth of clothes into a cabin bag — including what to wear on the plane and how to handle laundry mid-trip — the packing list tool lets you build a personalised list by trip type and duration. The guide on carry-on essentials travellers forget covers the non-clothing items that reliably get left behind.
The core principle is simple: every item in your cabin bag should earn its space. A bag packed with that discipline will, on almost every carrier, fit the allowance — and leave you walking past the baggage belt rather than waiting for it.