What counts as a personal item on a flight?
One bag under the seat, and a short list of things that are not bags at all. Here is what fits in each category, and which carriers actually measure.
By Michael W. · Last updated October 11, 2026
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Your personal item is one bag small enough to go under the seat in front of you - a purse, a laptop bag, a briefcase, a camera bag, a small backpack, a diaper bag or a small tote all qualify, and you get one of them, not one of each. On top of that, most carriers carry a jacket, an umbrella, duty-free purchases, reading material, food for the flight and assistive or medical devices free, and those do not count against either bag allowance.
The category is defined by size and location, not by the kind of object. That is why there is no list of approved bags: anything that fits under the seat is a personal item, and anything that does not is your carry-on. Where airlines differ is in whether they publish a number for it at all - and three major US carriers do not.
One personal item, not one of each type
A handbag plus a laptop bag is two personal items and you are allowed one. The standard fix is a bag with a laptop sleeve inside it, or putting the smaller bag inside the larger one before you board.
What counts as what
| Item | Category | Counts against an allowance? |
|---|---|---|
| Purse, handbag, laptop bag, briefcase, camera bag | Personal item | Yes - and you get one of these |
| Small backpack or tote that fits under the seat | Personal item | Yes |
| Full-size suitcase or 40 L travel pack | Carry-on | Yes - the overhead allowance |
| Jacket or coat | Not baggage | No |
| Umbrella, reading material, food for the flight | Not baggage | No |
| Duty-free purchases | Not baggage on most carriers | No - check your carrier |
| Assistive or medical devices, CPAP | Not baggage | No |
| Car seat, stroller, diaper bag | Child items | No on most US carriers |
What each airline publishes
Five of the eight major US carriers publish a personal item dimension, and three do not. The three that do not are not being generous - they are reserving judgement, because a rule with no number is a rule you cannot appeal to either.
| Airline | Published limit | What it means in practice |
|---|---|---|
| United | 17 x 10 x 9 in | Strictest in the US - design your bag around this |
| JetBlue | 17 x 13 x 8 in | Wide but shallow; flat bags clear it, cubes often do not |
| American | 18 x 14 x 8 in | Among the most generous published figures |
| Frontier | 18 x 14 x 8 in, 35 lb | Weighed, and the sizer is genuinely used |
| Spirit | 18 x 14 x 8 in | Sizer is genuinely used |
| Delta | None published | Lists examples - purse, briefcase, laptop bag, diaper bag |
| Southwest | None published | Must fit under the seat |
| Alaska | None published | Lists categories rather than dimensions |
The complete table with the sources is in personal item size by airline.
The things that are free on top of both bags
This is the part most travelers under-use, and it is published policy rather than a loophole. On most US carriers none of the following counts as baggage at all:
- A jacket or coat. Carried or worn, it is not baggage. A bulky coat out of the bag is several litres back.
- An umbrella, and reading material for the flight.
- Food or drink bought after security for consumption on board.
- Duty-free purchases on most carriers - though a few count them, so check if you are planning around it.
- Assistive and medical devices - a CPAP, a cane, crutches, a car seat, a stroller. These are additional to both allowances on every major US carrier.
- A diaper bag when travelling with an infant, on most carriers.
The jacket rule in particular is worth remembering at a gate where your bag is borderline: wearing the coat you packed is the fastest way to lose two inches of depth.
The four mistakes that cost people money
- Bringing two small bags. A handbag plus a laptop sleeve is two personal items. Nest one inside the other before you reach the gate.
- Treating a 30-litre backpack as a personal item on a strict carrier. It usually works, and on Frontier or Spirit it is measured. Does a backpack count as a personal item covers the sizes.
- Leaving a water bottle and a jacket strapped to the outside. Both get measured as part of the bag.
- Assuming Basic Economy includes a carry-on. On United and Delta domestic Basic Economy, the personal item is the entire allowance.
What belongs in the personal item rather than the carry-on
The personal item is the bag that stays with you if the overhead bins fill and your carry-on gets gate-checked. Everything irreplaceable belongs in it: medication, documents, keys, wallet, phone, and every power bank you are carrying - those are prohibited in the hold entirely.
Add whatever you want during the flight, because the overhead bin is out of reach during taxi, takeoff and turbulence. The full list is in long-haul flight essentials, and what must never be checked at all is in what not to pack in checked luggage.
Quick picks
The short list. Tap any row for the full write-up, including what each one is bad at.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 |  Travelpro Maxlite 5 Rolling Underseat Tote 15.5 x 16.25 x 8.5 inches overall, on its own wheels, with the wheels inside that figure. | Long connections and anyone who would rather not carry a bag | $120.00$139.9914% offView on Amazon #ad Price as of October 10, 2026. How we’re funded |
| 2 |  Baggallini Carryall Laptop Tote A padded laptop sleeve plus a trolley sleeve, which solves the two-personal-items problem. | Anyone travelling with a laptop and a purse | $87.50$125.0030% offView on Amazon #ad Price as of October 10, 2026. How we’re funded |
| 3 |  Narwey Foldable Travel Duffel Bag Soft-sided and compressible, so it fits any under-seat space - and folds to nothing when empty. | Return legs and unplanned shopping | $9.99View on Amazon #ad Price as of October 10, 2026. How we’re funded |
The personal item you do not carry at all
Travelpro Maxlite 5 Rolling Underseat Tote
Almost nobody thinks of a personal item as something that could have wheels, which is why this format is under-used. The published 15.5 x 16.25 x 8.5 inch figure is the overall measurement including wheels and handle, so there is no hidden margin to discover at the gate, and the front flap pocket means documents come out without opening the main bag. Across a long terminal it removes the shoulder load entirely.
The specs that decide it
- Fits: 15.5 x 16.25 x 8.5 in overall - the wheels and handle are in that figure
- Access: Front flap pocket for documents without opening the main bag
- Why: Removes the carry entirely, which matters more than it sounds
- Watch: 16.25 in across is wider than United's published 10 in depth allowance
Flaws but not dealbreakers
Wheels and a handle frame take up internal volume, so it holds less than a soft tote of the same external size. The 16.25-inch width is also over the depth published by United and JetBlue, so it is a bag chosen on the softness of the under-seat space rather than on the numbers for those two carriers.
#ad Price as of October 10, 2026. How we’re funded
The one that absorbs the handbag so you are back to one bag
Baggallini Carryall Laptop Tote
The commonest personal item failure is arriving with two: a handbag and a laptop bag. A tote with a dedicated padded laptop compartment turns both into one compliant bag, and the trolley sleeve means your suitcase carries it. The narrow 5.5-inch depth is what gets it into an under-seat space that a chunkier bag of the same volume will not reach.
The specs that decide it
- Measures: 19 x 12.5 x 5.5 in - narrow, but an inch over the 18 x 14 x 8 on length
- Feature: Trolley sleeve - slides over a suitcase handle instead of being carried
- Laptop: Padded compartment for a machine up to 15 inches
- Solves: Handbag plus laptop bag becoming two personal items
Flaws but not dealbreakers
At 19 inches long it is over every published personal item length in the US. A soft tote compresses into an under-seat space and is rarely measured, but on an ultra-low-cost carrier with a sizer at the gate that is a knowing risk rather than a safe bet.
#ad Price as of October 10, 2026. How we’re funded
The one that folds flat until you need it
Narwey Foldable Travel Duffel Bag
A completely soft bag is the most reliably compliant personal item there is, because it simply deforms into whatever space is available. This one folds flat in your checked bag on the way out and becomes your under-seat bag on the way home when you are carrying more than you left with. It is the cheapest honest answer to the allowance.
The specs that decide it
- Clears: Soft-sided - compresses into any carrier's under-seat space
- Storage: Folds flat when empty
- Cost: The cheapest solution to the personal item allowance
- Best use: The return leg, and overflow you did not plan for
Flaws but not dealbreakers
No structure means no protection: a laptop in this is a laptop resting against whatever else is in there. It has no trolley sleeve either, so it is carried on one shoulder the whole way.
#ad Price as of October 10, 2026. How we’re funded
Frequently asked questions
What counts as a personal item on a flight?
Does a purse count as a personal item?
Does a jacket count as a personal item?
What size must a personal item be?
Sources
Read next
- Personal item size by airline
- Does a backpack count as a personal item?
- Best personal item bags
- Carry-on size by airline
- Long-haul flight essentials
More in Airline Rules, or see every roundup and comparison on the site.