what is the largest carry on luggage size
The largest commonly accepted carry-on luggage size is 22 x 14 x 9 inches (56 x 36 x 23 cm), including wheels and handles. Many major U.S. and international airlines use this as their standard maximum for an overhead-bin carry-on.
Quick Scoop
- For most airlines, the “safe” maximum is 22 x 14 x 9 in.
- Some airlines (like Southwest or a few international carriers) allow slightly bigger bags, up to around 24 x 16 x 10 in , but that is not universal.
- Budget airlines often have stricter limits and may charge extra if your bag is even slightly oversized.
- Dimensions are almost always measured including wheels and handles , not just the shell.
- There is no single global rule ; each airline sets its own policy, so you should always double‑check your specific flight.
Typical airline limits (at a glance)
| Type of airline | Typical max carry-on size | Notes |
|---|---|---|
| Major U.S. airlines (American, Delta, United, Alaska, JetBlue) | 22 x 14 x 9 in | Most list this exact size as their standard overhead carry-on limit. | [5]
| Southwest | 24 x 16 x 10 in | More generous than most, but still must fit overhead. | [1][5]
| Many international airlines | About 21.5–22 x 14 x 9 in | Similar to U.S. majors, sometimes with stricter weight limits. | [2][1]
| Low-cost / budget carriers | Often smaller, e.g., 18 x 14 x 8 in for free items | May treat larger bags as paid carry-on or checked luggage. | [8][5]
How to choose “the largest” safe carry-on
- Aim for 22 x 14 x 9 in if you want a bag that works on the widest range of airlines without hassle.
- If you mostly fly an airline with larger limits (like Southwest), you can buy a slightly bigger suitcase, but it may be forced to gate-check on stricter airlines.
- Always measure height, width, and depth with wheels and handles ; airline sizers and gate agents use the full external size.
- Check both size and weight for international flights, since some carriers strictly enforce weight (often 17–22 lbs / 8–10 kg).
Mini “real world” example
Imagine you buy a 23-inch tall spinner that’s advertised as “carry-on friendly.” If its true outer dimensions are 23 x 15 x 10 in including wheels, it might be fine on Southwest but could fail the sizer on American or Delta and get gate‑checked (or even charged).
Bottom line: if you want the largest carry-on that still works almost everywhere, stick to around 22 x 14 x 9 inches, including wheels and handles , and verify your specific airline’s rules before you fly.
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