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Personal item vs carry-on

Researched and maintained by FitsOnBoard editorial teamPublished by the FitsOnBoard teamLast updated: Editorial standards

In one line: a personal item is the small bag that fits under the seat in front of you; a carry-on(cabin bag) is the larger one that goes in the overhead bin. The catch is that “small” and “large” mean different sizes on different airlines — and some let you bring both free while others don’t.

Personal itemCarry-on / cabin bag
Where it goesUnder the seatOverhead bin
Typical size40×30×15 cm (EU)
45×35×20 cm (US)
55×40×20 cm (EU)
56×36×23 cm (US)
Typical weightOften unlimited / small7–10 kg (EU/Gulf); often unlimited (US)
CostUsually freeFree on many; paid on low-cost/basic fares
ExamplesHandbag, laptop bag, small backpackTrolley case, 40 L travel backpack

One free bag, or two?

This is where airlines differ most. Based on the 52 airlines we track:

✓ Both free — personal item + cabin bag (30)

Full-service and most US airlines let you bring both at no cost.

! Personal item only free (13)

Low-cost carriers: the cabin bag is a paid add-on or needs priority boarding.

One cabin bag only (9)

Several Gulf and Asian economy fares include a single cabin bag and no separate personal item.

Check your own bag

Enter your bag’s size to see whether it counts as a free personal item, a cabin bag, or is over the limit — on every airline at once.

Check your bag

Enter your bag’s three dimensions to see which airlines it fits.

Avoid a surprise at the gate

  • ▸ Measure with wheels, handles and side pockets — that’s what the gate sizer catches.
  • ▸ Watch the fare: “Basic” / “Light” fares on legacy airlines can drop the free cabin bag to personal-item-only.
  • ▸ A soft bag bulges when packed. Leave a couple of cm of margin, especially on low-cost carriers that measure strictly.

FAQ

Is a backpack a personal item or a carry-on?+

It depends on size, not type. A small backpack (around 40×30×15 cm) that slides under the seat is a personal item. A larger travel backpack (around 55×40×20 cm) counts as a carry-on and must go in the overhead bin.

Can I bring both a personal item and a carry-on for free?+

On 30 of our 52 reviewed airline guides you get both free. On 13 airlines only the personal item is free and the cabin bag is paid or needs priority. On 9 reviewed airlines you only get one bag in economy.

What happens if my personal item is too big?+

If it won’t fit under the seat or in the gate sizer, it’s treated as a carry-on — which may mean a fee, priority boarding, or being placed in the hold. Leave a margin: measure with wheels and handles and check before you fly.

Do wheels and handles count towards the size?+

Yes. Airlines measure the widest points, so wheels and handles are included. Measure your bag the same way.

Check by size →All airlines →How we check →