What Are the Carry-On Size Limits by Airline in 2026?
Carry-on size limits vary significantly by airline, and packing the wrong bag can mean gate fees or a checked-bag delay. This reference guide maps published carry-on and personal-item limits across US majors, budget carriers, and international airlines for 2026.
Affiliate disclosure: Cabin Verdict earns commissions from qualifying purchases via Amazon and Travelpro links on this page. All size limits in this guide are sourced from each airline's published baggage policy page. Limits can change; always verify on the airline's website before travel.
Airline carry-on size limits are not universal. A 22-inch spinner that fits effortlessly in a Delta overhead bin may get measured at the gate on a Ryanair flight. This reference guide compiles published carry-on and personal-item dimension limits across US major carriers, US budget carriers, and major international airlines as of 2026 — mapping which standard bag sizes clear each airline's rules.
US Major Airlines: Carry-On Size Limits
| Airline | Carry-On Limit (including wheels/handles) | Personal Item Limit | 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 (56 x 36 x 23 cm) | 18 x 14 x 8 in | None (domestic) |
| United Airlines | 22 x 14 x 9 in (56 x 36 x 23 cm) | 17 x 10 x 9 in | None (domestic) |
| Southwest Airlines | 24 x 16 x 10 in (61 x 41 x 25 cm) | 18.5 x 8.5 x 13.5 in | None |
| JetBlue Airways | 22 x 14 x 9 in (56 x 36 x 23 cm) | 17 x 13 x 8 in | None |
| Alaska Airlines | 22 x 14 x 9 in (56 x 36 x 23 cm) | 17 x 13 x 6 in | None |
| Hawaiian Airlines | 22 x 14 x 9 in (56 x 36 x 23 cm) | 25 x 15 x 10 in | None |
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Source: Each airline's published baggage policy pages, 2026.
Practical note: Southwest is notably more generous than other US majors — a Southwest-optimized bag can be slightly larger in all three dimensions. For travelers who primarily fly Southwest and need maximum packing volume, that matters. For multi-airline travelers, the 22 x 14 x 9-inch standard clears all US majors.
US Budget Airlines: Carry-On and Personal Item Limits
| Airline | Carry-On Limit (fee applies) | Personal Item Limit (free) | Carry-On Fee (approx.) |
|---|---|---|---|
| Spirit Airlines | 22 x 18 x 10 in | 18 x 14 x 8 in | $45–$99 per segment |
| Frontier Airlines | 24 x 16 x 10 in | 18 x 14 x 8 in | $30–$99 per segment |
| Allegiant Air | 22 x 16 x 10 in | 18 x 14 x 8 in | $18–$75 per segment |
| Sun Country | 24 x 16 x 11 in | 17 x 12 x 6 in | Fee varies |
Source: Each airline's published baggage policy pages, 2026.
Key takeaway: All three major US budget carriers share the same 18 x 14 x 8-inch personal-item limit for the free allowance. A bag that clears Spirit clears Frontier and Allegiant. Carry-on dimensions for fee-based carry-ons vary but are generally more generous than US majors.
International Full-Service Airlines: Carry-On Limits
| Airline | Carry-On Limit | Weight Limit | Notes |
|---|---|---|---|
| British Airways | 56 x 45 x 25 cm (22 x 17.7 x 9.8 in) | 23 kg total | Generous in practice |
| Lufthansa | 55 x 40 x 23 cm (21.7 x 15.7 x 9 in) | 8 kg (17.6 lb) | Weight enforced |
| Air France | 55 x 35 x 25 cm (21.7 x 13.8 x 9.8 in) | 12 kg (26.4 lb) | Width is narrower |
| KLM | 55 x 35 x 25 cm | 12 kg | Same as Air France |
| Emirates | 55 x 38 x 20 cm (21.7 x 15 x 7.9 in) | 7 kg (15.4 lb) | Weight strictly enforced |
| Singapore Airlines | 55 x 38 x 20 cm | 7 kg | Weight strictly enforced |
| Cathay Pacific | 56 x 36 x 23 cm (22 x 14.2 x 9 in) | 7 kg | Similar to US standard |
| Qatar Airways | 50 x 37 x 25 cm (19.7 x 14.6 x 9.8 in) | 7 kg | Shorter than US standard |
| Air Canada | 55 x 40 x 23 cm (21.7 x 15.7 x 9 in) | None enforced | Similar to Lufthansa |
| LATAM | 55 x 35 x 25 cm | 8 kg | Similar to Air France |
Source: Each airline's published baggage policy pages, 2026.
Critical differences for international travel:
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Weight is enforced. Emirates enforces a 7 kg (15.4 lb) carry-on weight limit. A standard 21-inch hard-shell weighing 7–8 lb empty leaves only 7–9 pounds for contents. Plan pack weight accordingly.
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Depth varies significantly. Emirates and Singapore publish 20 cm (7.9 inches) depth limits — nearly 1.2 inches narrower than the US standard 9 inches. A US-standard 22 x 14 x 9-inch bag technically exceeds that limit.
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A bag sized at 21.5 x 14 x 9 inches (55 x 36 x 23 cm) is the best universal fit across US majors and most full-service international carriers. This is the de facto sweet spot that most 21-inch carry-ons are engineered toward.
European Budget Airlines: Stricter Personal Item Rules
| Airline | Free Personal Item | Carry-On (fee applies) | Fee Approx. |
|---|---|---|---|
| Ryanair | 40 x 20 x 25 cm (small bag only) | 55 x 40 x 20 cm | €/£6–50 |
| easyJet | 45 x 36 x 20 cm (personal item only) | 56 x 45 x 25 cm (Priority) | €/£8–40 |
| Wizz Air | 40 x 30 x 20 cm | 55 x 40 x 23 cm (fee) | €/£8–30 |
European budget carriers are significantly stricter on personal-item dimensions than their US counterparts. Ryanair's free allowance (40 x 20 x 25 cm) is a small bag or large purse — not a carry-on or a standard personal-item backpack.
What Size Carry-On Covers the Most Airlines?
Based on the published limits above, a carry-on at 21.5 x 14 x 9 inches (55 x 36 x 23 cm) closed including wheels and handles clears:
- All US major airlines
- Southwest (by a significant margin)
- British Airways, Lufthansa, Air Canada, Cathay Pacific
- Most full-service Asian and Middle Eastern carriers (verify weight — Emirates, Singapore: 7 kg)
It does NOT fit Emirates and Singapore's 20 cm depth limit when the bag is at 9 inches (23 cm) depth — though 23 cm is close enough that soft-side bags are rarely measured precisely.
For bags engineered to this sweet spot, see the carry-on suitcase options on Amazon and Travelpro's carry-on collection.
Tips for Multi-Airline Travelers
- Buy to the smaller standard. A 21-inch carry-on at 55 x 36 x 23 cm clears more routes than a US-optimized 22 x 14 x 9-inch bag when flying internationally.
- Weigh your bag when packed before every international departure. Emirates and Singapore Airlines' 7 kg cabin limit is enforced at check-in, not just boarding.
- Never expand your carry-on before an international flight. Expansion adds depth that can push the bag outside the airline's limit.
- Check your specific aircraft, not just the airline. Many international airlines operate regional partners on connecting routes with smaller overhead bins.
Summary
US major airline carry-on limits cluster around 22 x 14 x 9 inches, budget US carriers offer the same free personal-item limit of 18 x 14 x 8 inches, and international full-service carriers vary widely — with weight limits (7–12 kg) often being the binding constraint rather than dimensions. A 21-inch bag at 55 x 36 x 23 cm is the most universally compliant choice for mixed-airline travelers.
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