Airline Carry-On Size Limits 2026: Every Major Airline Compared

Nothing sours a trip faster than being stopped at the gate with an oversized cabin bag. The rules look simple until you compare them: one airline allows 22 x 14 x 9 inches, another insists on a combined 23 kg weight limit, and a third hands you a metal sizer and a £50 gate fee. This guide lays out the airline carry-on size limits for every major airline in 2026 – US legacy carriers, European flag carriers, Gulf and Asian airlines, and the budget airlines – so you can pack once and walk straight past the sizer.

Master Comparison: Airline Carry-On Size Limits at a Glance

Airline	Carry-on size (max)	Personal item (max)	Weight limit
American Airlines	22 x 14 x 9 in (56 x 36 x 23 cm)	18 x 14 x 8 in	None (domestic)
Delta Air Lines	22 x 14 x 9 in	18 x 14 x 8 in	None (domestic)
United Airlines	22 x 14 x 9 in	17 x 10 x 9 in	None (domestic)
Southwest Airlines	24 x 16 x 10 in	16.25 x 13.5 x 8 in	None
JetBlue	22 x 14 x 9 in	17 x 13 x 8 in	None
Alaska Airlines	22 x 14 x 9 in	17 x 11 x 9.5 in	None
Air Canada	21.5 x 15.5 x 9 in (55 x 40 x 23 cm)	17 x 13 x 6 in	None
British Airways	22 x 18 x 10 in (56 x 45 x 25 cm)	16 x 12 x 6 in	23 kg combined cabin allowance
Lufthansa	21.7 x 15.7 x 9 in (55 x 40 x 23 cm)	15.7 x 11.8 x 3.9 in	8 kg (economy)
Air France / KLM	21.7 x 13.8 x 9.8 in (55 x 35 x 25 cm)	15.7 x 11.8 x 5.9 in	12 kg total cabin allowance
Emirates	22 x 15 x 8 in (55 x 38 x 20 cm)	16 x 13 x 8 in	7 kg (economy); business/first 2 pieces, up to 14 kg
Qatar Airways	20 x 15 x 10 in (50 x 37 x 25 cm)	16 x 12 x 6 in	7 kg (economy); business/first 2 pieces, up to 15 kg
Etihad	22 x 14 x 9 in (56 x 36 x 23 cm)	16 x 13 x 8 in	7 kg
Singapore Airlines	115 cm linear dimensions	40 x 30 x 10 cm	7 kg
Cathay Pacific	22 x 14 x 9 in (56 x 36 x 23 cm)	15 x 11 x 6 in	7 kg / 15 lbs
Ryanair (Priority)	21.7 x 15.7 x 7.9 in (55 x 40 x 20 cm)	15.7 x 11.8 x 7.9 in (free)	10 kg (Priority bag)
EasyJet (Large Cabin Bag)	22 x 17.7 x 9.8 in (56 x 45 x 25 cm)	17.7 x 11.8 x 7.9 in (free)	None published
Spirit Airlines (paid)	22 x 18 x 10 in (56 x 46 x 25 cm)	18 x 14 x 8 in (free)	40 lbs / 18 kg
Frontier Airlines (paid)	24 x 16 x 10 in (61 x 41 x 25 cm)	18 x 14 x 8 in (free)	35 lbs / 16 kg

Keep in mind that these figures are the published limits for 2026; airlines can adjust policies seasonally, so always re-check your specific fare’s rules a day or two before you fly.

US Legacy Carriers: American, Delta and United

The big three US airlines keep the airline carry-on size limits admirably simple: 22 x 14 x 9 inches (56 x 36 x 23 cm) for the full-size cabin bag, and there is no weight limit on domestic flights. If your suitcase fits a standard 20-22 inch spinner, you are fine on all three – with a couple of caveats worth knowing.

American and Delta each allow one carry-on plus one personal item (a purse, laptop bag, or small backpack that fits under the seat). Enforcement is relaxed: gate agents rarely measure bags, and the bins on their mainline fleets comfortably swallow standard spinners. Delta’s A220s and A321neos have roomier bins, while older aircraft on short hops can fill up fast – in which case late boarders get a free gate check, not a fine.

United matches the 22 x 14 x 9 inch standard, but Basic Economy passengers should read the fine print: on some routes, Basic Economy fares only include a personal item, and bringing a full-size carry-on to the gate means paying the gate-check fee. If you travel United regularly on cheap fares, the free personal item is 17 x 10 x 9 inches – that is your entire allowance unless you upgrade.

For the full rundown on each carrier’s checked-bag fees (because many travellers mix carry-on and checked bags), see our deep dives on Delta Air Lines baggage fees, United Airlines baggage fees, and American Airlines baggage fees.

Southwest, JetBlue and Alaska: The Generous Middle

Southwest stands out with one of the most generous US limits: 24 x 16 x 10 inches and no weight limit. That extra two inches of height and width over the 22 x 14 x 9 standard means a 24-inch case fits – a genuine advantage if you travel light and want to skip baggage fees entirely (Southwest still gives you two free checked bags too, so it is belt-and-braces territory).

JetBlue and Alaska stick with the familiar 22 x 14 x 9 inch standard and no published weight limits. Alaska’s operation leans heavily on regional jets out of its Seattle and Portland hubs, so read the regional-jet section below – on an E175, your “standard” bag may still end up gate-checked for free.

Air Canada

Air Canada’s limit is slightly tighter than the US standard: 21.5 x 15.5 x 9 inches (55 x 40 x 23 cm). The width allowance is a little more generous (15.5 inches) but the height is half an inch shorter, which matters if you own a true 22-inch spinner that runs tall. Measure it – wheels and handles included – before you commit. Our Air Canada baggage fees guide covers the checked-bag side of the same fares.

European Flag Carriers: British Airways, Lufthansa, Air France and KLM

This is where the airline carry-on size limits start to diverge from what American travellers expect. The dimensions look familiar, but weight limits – rare in the US – are the real tripwire in Europe.

British Airways is the most generous of the lot on weight: 22 x 18 x 10 inches (56 x 45 x 25 cm) with a combined cabin-baggage allowance of up to 23 kg. That is a full checked-bag’s worth of weight in the cabin. The width (18 inches) is notably wider than most, so wider “international” cabin cases pass comfortably.

Lufthansa allows 21.7 x 15.7 x 9 inches (55 x 40 x 23 cm) but caps economy passengers at 8 kg for the main cabin bag. Eight kilos disappears fast with a hard-shell spinner, so pack light or expect the bag to be weighed at check-in on busy long-haul routes.

Air France and KLM use 21.7 x 13.8 x 9.8 inches (55 x 35 x 25 cm) with a 12 kg total cabin allowance covering both your bag and personal item. Notice the narrow width – 13.8 inches. Wide, deep cabin cases that pass everywhere else can fail the KLM sizer. If your bag is exactly 22 inches in any dimension, you are technically over here.

Middle East and Asian Carriers: Emirates, Qatar, Etihad, Singapore Airlines and Cathay Pacific

On Gulf and Asian carriers, the airline carry-on size limits are strict on paper and – crucially – enforced far more often than on US legacy airlines, especially at busy hubs like Dubai, Doha, and Singapore.

Emirates publishes 22 x 15 x 8 inches (55 x 38 x 20 cm) with a 7 kg economy limit. Business and First Class passengers may carry two pieces up to a combined 14 kg. The 20 cm depth is tight; thick expandable bags must be compressed. Emirates agents at check-in frequently spot-check weight, so keep your economy cabin bag under 7 kg or it will be checked.

Qatar Airways is stricter still on dimensions: 20 x 15 x 10 inches (50 x 37 x 25 cm) with a 7 kg economy limit (business/first: two pieces up to 15 kg). That 20-inch height is one of the smallest mainstream limits in the world – a “standard” 22-inch US spinner is oversized for Qatar economy. If you fly Doha regularly, buy a 20-inch case.

Etihad allows 56 x 36 x 23 cm (roughly 22 x 14 x 9 inches) at 7 kg for economy – similar in spirit to Emirates.

Singapore Airlines expresses its limit as 115 cm in total linear dimensions (length + width + height), with a 7 kg weight cap. A bag measuring 55 x 40 x 20 cm comes in exactly at 115 cm – that is the sweet spot.

Cathay Pacific uses 22 x 14 x 9 inches with a 15 lb (7 kg) limit, enforced inconsistently but visibly at Hong Kong check-in counters.

The pattern is clear: on these carriers, weight is the limiting factor, not size. For the checked-bag counterparts, read our Emirates baggage allowance guide and Qatar Airways baggage allowance guide.

Budget Carriers: Ryanair, EasyJet, Spirit and Frontier

Budget airlines flip the model entirely. Here, the airline carry-on size limits are the business model: a tiny free bag, a paid larger bag, and strict enforcement with metal sizers at every gate.

Ryanair gives non-Priority passengers one free small bag: 15.7 x 11.8 x 7.9 inches (40 x 30 x 20 cm) – that is a daypack or large handbag, nothing more. Priority Boarding (usually £6-£12 when booked ahead) adds a 10 kg cabin bag at 21.7 x 15.7 x 7.9 inches. Without Priority, any full-size cabin bag found at the gate is charged the gate fee (around €/£50) and put in the hold. Ryanair’s sizers are legendary for a reason: agents check routinely, and the 7.9-inch depth limit catches bags that pass everywhere else. See our Ryanair baggage fees guide for the full fee schedule.

EasyJet gives every passenger a free small under-seat bag: 17.7 x 11.8 x 7.9 inches (45 x 36 x 20 cm). A large cabin bag (22 x 17.7 x 9.8 inches / 56 x 45 x 25 cm) is included only with Up Front or Extra Legroom fares, or purchasable as an add-on. Like Ryanair, EasyJet enforces at the gate – but unlike Ryanair, it does not publish a weight limit, so size is the only thing that matters. Our EasyJet baggage fees guide breaks down every add-on price.

Spirit Airlines charges for full-size carry-ons (22 x 18 x 10 inches, up to 40 lbs / 18 kg). Book the bag when you book the ticket – the price climbs at every stage, and the gate price is the worst of all. The free allowance is a personal item at 18 x 14 x 8 inches. Spirit’s gate sizers are strict: if it does not slide in, you pay.

Frontier Airlines works the same way: paid carry-on up to 24 x 16 x 10 inches (35 lbs / 16 kg), free personal item at 18 x 14 x 8 inches. Note the unusual 24-inch height on the paid bag – Frontier’s bins are roomy, but the fee structure is punishing at the gate.

The golden rule with all four: never buy the bag at the gate. A carry-on that costs $35-$45 at booking can cost $60-$100 at the gate, and the sizer does not negotiate.

Carry-On vs Personal Item: What’s the Difference?

The distinction matters because getting it wrong is the most common (and most expensive) cabin-baggage mistake.

A carry-on bag is your main cabin piece – the roller bag or duffel that goes in the overhead bin. Every airline publishes a maximum size for it, and on legacy carriers it is included in your fare.

A personal item is your second piece – a purse, laptop bag, camera bag, or small backpack that must fit under the seat in front of you. On legacy carriers it is always free and almost always included. On budget carriers (Ryanair, EasyJet, Spirit, Frontier, Wizz Air), the personal item is frequently the only free piece you get.

Common misunderstandings:

• A small backpack that fits under the seat is a personal item, not a carry-on – it is free on every airline.
• A “large backpack” (40-50 litres) is a carry-on; it will not fit under a seat and belongs in the overhead bin.
• Airlines count pieces, not intent: if your purse is inside your roller bag at the gate, that is one piece.
• Coats, umbrellas, and (usually) duty-free bags do not count against your allowance on most carriers – but budget airlines can be stricter, so keep receipts.

How to Measure Your Bag (Wheels and Handles Count)

Almost every airline states that published dimensions include wheels, handles, and side pockets. This is the single most overlooked detail in all of the airline carry-on size limits, and it is where most “but it fits!” arguments die.

• Stand the bag upright on a hard floor, handle retracted.
• Measure height from the floor (bottom of the wheels) to the top of the bag – including the highest point of any top handle, even retracted.
• Measure width across the widest point, usually the frame or the wheels themselves.
• Measure depth across the deepest point – with the bag unexpanded. If your bag has an expansion zip, keep it zipped; an expanded bag that fit the sizer on the way out will fail it on the way home.
• Compare each dimension against the strictest airline on your itinerary, not the most generous.

Buying a new case? Look for “international carry-on” sizing (typically 55 x 40 x 20 cm / 21.7 x 15.7 x 7.9 in) rather than “domestic US carry-on” (22 x 14 x 9 in). The international size passes everywhere including Qatar Airways and the Lufthansa Group; the US size fails Qatar, Lufthansa (depth), and Ryanair’s non-Priority sizer.

Weight Limits: The Rules Most Travellers Miss

US travellers are spoiled: American, Delta, United, Southwest, JetBlue, and Alaska impose no weight limit on cabin bags domestically. Walk onto a US flight with a 15 kg carry-on and nobody blinks.

Everywhere else, weight limits are real and rising in enforcement:

• British Airways: 23 kg combined cabin allowance – the most generous mainstream limit in the world.
• Air France / KLM: 12 kg total across both pieces.
• Lufthansa: 8 kg (economy cabin bag).
• Emirates, Qatar, Etihad, Singapore Airlines, Cathay: 7 kg economy – the international standard.
• Ryanair Priority bag: 10 kg.
• Spirit / Frontier: 40 / 35 lbs respectively – generous, but you are paying for the bag anyway.

Practical tips: hard-shell spinners weigh 2.5-4 kg empty, which can eat half a 7 kg allowance. For strict-weight carriers, a soft duffel or fabric cabin case (often under 1.5 kg) is the frequent flyer’s weapon of choice. Pack a portable luggage scale – a £10 scale has saved more trips than any packing cube ever will.

Enforcement: Who Actually Checks?

Enforcement varies more than the rules themselves, and knowing the pattern is worth real money:

Budget carriers (Ryanair, EasyJet, Spirit, Frontier, Wizz Air): strict and systematic. Metal sizers stand at every gate, agents check routinely, and the penalty is a steep gate fee of $60-$100 (or €/£50+). This is where being 1 cm over actually costs you.

Gulf and Asian carriers: moderate. Weight is checked at check-in far more often than size is checked at the gate. A 7 kg limit is a 7 kg limit in Dubai and Doha.

European flag carriers: moderate at check-in on busy long-haul departures, relaxed at the gate unless bins are full.

US legacy carriers: relaxed. Gate agents almost never measure; the sizer exists mostly for show. The real risk is full bins on short regional hops, where late boarders get a free gate check – annoying, but free.

Southwest: relaxed to the point of legendary; its generous 24 x 16 x 10 limit rarely comes up at all.

General rule: the cheaper your fare relative to the airline’s cost structure, the harder they enforce. A $19 Spirit ticket and a $400 Delta ticket get different gate-agent attention, and the economics explain why.

Regional Jets and Small Turboprops: The Exception That Catches Everyone

Here is the scenario that ruins travel days: your bag passes every airline carry-on size limits check, fits the sizer, complies on weight – and then you board a CRJ-900 or an ATR 72 where the overhead bins are barely deeper than a laptop bag.

On regional jets (Embraer E-Jets, Bombardier CRJs) and turboprops (ATR, Dash 8), overhead bins often cannot take a standard 22-inch roller, regardless of what the airline’s published limit says. Airlines handle this with free gate valet checks: you leave the bag at the aircraft door and collect it plane-side on arrival. It costs nothing and adds about five minutes.

What to do: pack a small personal item with your valuables, medication, and documents inside your carry-on. If your bag gets valet-tagged, pull the personal item out before handing the bag over. On these aircraft, the personal item effectively becomes your cabin bag – so make sure it is genuinely under-seat-sized.

Frequently Asked Questions

Do wheels and handles count in carry-on size limits?

Yes. Virtually every airline states that published dimensions include wheels, handles, and side pockets. A bag sold as “22-inch” that measures 23.5 inches with the wheels is oversized on every airline listed here. Measure the real thing.

Which airline has the most generous carry-on size limits?

Southwest has the largest dimensions (24 x 16 x 10 in, no weight limit) among US carriers. Globally, British Airways wins on weight (23 kg combined), while Southwest wins on pure size. Frontier’s paid bag also allows 24 inches in height.

Which airline has the strictest carry-on rules?

Qatar Airways’ 20-inch height limit is the smallest mainstream dimension, and its 7 kg weight cap is tightly enforced at Doha. Among budget carriers, Ryanair is famously strict: non-Priority passengers get only a 15.7 x 11.8 x 7.9-inch small bag, and the gate sizers are relentless.

Can I bring a carry-on and a personal item?

On virtually every legacy carrier, yes – one cabin bag plus one personal item is the standard allowance. On budget carriers, only the personal item is free; the full-size cabin bag is an extra purchase (Ryanair Priority, EasyJet add-on, Spirit/Frontier paid carry-on).

What happens if my bag is too big at the gate?

On legacy carriers, usually a free gate check – annoying but harmless. On budget carriers, a gate fee of roughly $60-$100 (€/£50+), which is why you should always buy the bag during booking, where it costs a fraction of that.

Are carry-on size limits the same for international flights?

No. The 22 x 14 x 9-inch standard is largely a US convention. International limits vary: Qatar uses 20 x 15 x 10 inches, Lufthansa and Air France use 55 x 40 x 23/25 cm, and nearly all non-US carriers add weight limits (typically 7-8 kg in economy). Always check the strictest airline on a multi-carrier itinerary.

Does Basic Economy include a carry-on?

It depends on the airline. American, Delta, and Southwest Basic Economy fares include a standard carry-on. United’s Basic Economy is the outlier: on many routes it includes only a personal item, and a full-size carry-on brought to the gate incurs the gate-check fee. Check your fare class before you pack.

Do I need to worry about weight on US domestic flights?

No. None of the major US carriers (American, Delta, United, Southwest, JetBlue, Alaska) impose a weight limit on cabin bags for domestic flights. Weight limits matter on virtually every international carrier – 7 kg is the standard economy cap across Europe, the Gulf, and Asia.

Conclusion

The airline carry-on size limits of 2026 boil down to three zones. In the US, the standard is 22 x 14 x 9 inches with no weight limit – easy, forgiving, and rarely enforced. In Europe and across the Gulf and Asia, the dimensions look similar but weight limits of 7-8 kg (23 kg on generous British Airways) are the real constraint. And on budget carriers, the sizer is king: buy your bag in advance, respect the 15.7 x 11.8 x 7.9-inch free-bag reality, and never, ever pay at the gate.

Buy an international-sized case (55 x 40 x 20 cm), weigh it before you leave, keep your valuables in a true personal item, and you will clear every sizer from Dallas to Doha. Safe travels.