Short answer: the best personal item backpack is one that fits the strictest airline you fly. For American, Delta and Frontier (18 x 14 x 8 inches), the MATEIN Personal Item Backpack is the long-running best seller. For United basic economy, where the limit is 17 x 10 x 9 inches, pick the WANDF 17x10x9, built to that exact size.
Affiliate note: As an Amazon Associate, The Finer Route earns from qualifying purchases. Buying through our links costs you nothing extra. We have not tested every bag hands-on: picks are based on published dimensions, airline size rules and long-term buyer feedback, and we say where each one falls short.
MATEIN Personal Item Backpack
About 18 x 12 x 7.8 in, laptop sleeve, luggage strap. A huge seller.
Check price on AmazonWANDF 17x10x9
Made to United's personal item size, with a 180° opening.
Check price on AmazonTaygeer 35L Carry On Backpack
Opens like a suitcase, shoe pocket, about 16.8 x 11 x 7 in.
Check price on AmazonShopping on Black Friday? Add it to your Amazon cart now so it is ready when deals start.
Basic economy fares and carry-on fees have made the free personal item the most valuable bag you own. Pack it well and you can travel for a long weekend, or a week in summer, without paying for a bag or fighting for overhead space. The catch: personal item limits differ between airlines, and gate agents on budget carriers measure.
Personal item size limits by airline (2026)
| Airline | Personal item limit | Notes |
|---|---|---|
| American Airlines | 18 x 14 x 8 in | Basic economy still includes a carry-on |
| Delta Air Lines | No published size; must fit under the seat | 18 x 14 x 8 in is a safe target |
| United Airlines | 17 x 10 x 9 in | Basic economy on most routes: personal item only |
| Frontier | 18 x 14 x 8 in | Sizers at most gates; strict |
| JetBlue | 17 x 13 x 8 in | Blue Basic: personal item only |
| Allegiant | 16 x 15 x 7 in | One of the tightest limits |
| Southwest, Alaska | No published size; must fit under the seat | Aim for about 16 x 13 x 8 in |
| Ryanair (Europe) | 40 x 30 x 20 cm (about 15.7 x 11.8 x 7.9 in) | The small bag is the only free one |
Limits as published by the airlines or reported by them as of October 2026. Always check your booking: rules change and differ by fare. For full-size carry-ons, see our carry-on luggage guide.
The rule of thumb: a backpack around 17 x 11 x 7 inches works almost everywhere in the US. Width is what fails most often on United, where 10 inches is the limit.
The backpacks compared
| Backpack | Size (brand figures) | Fits | Laptop |
|---|---|---|---|
| MATEIN Personal Item Backpack | About 18 x 12 x 7.8 in | American, Delta, Frontier | Up to 15.6 in |
| WANDF Personal Item Travel Bag | 17 x 10 x 9 in | United, plus all 18x14x8 airlines | Up to 15.6 in |
| Taygeer Carry On Backpack 35L | About 16.8 x 11 x 7 in | Most US airlines; tight for United width | Yes |
| ECOHUB Travel Backpack | About 18 x 13 x 7.8 in | American, Delta, Frontier | Yes |
| tomtoc Navigator 28L | About 17.7 x 11.8 x 7.9 in | Most US airlines, Ryanair-sized almost | Up to 16 in |
| Lossga Travel Backpack 30L | 18 x 14 x 8 in fully loaded | American, Delta, Frontier | Up to 15.6 in |
How we chose
- Measured against the rules. We compared each bag's published dimensions with the personal item limits of the main US airlines.
- Proven sellers. Every pick is a long-running, heavily reviewed backpack on Amazon, sold and shipped by Amazon at the time of writing (October 14, 2026).
- Travel features. Suitcase-style opening, laptop sleeve, a luggage strap for rolling bags, and a separate shoe or wet pocket.
- Honest limits. Soft bags bulge when overpacked. We say which ones are already at the edge of a limit.
The best personal item backpacks in 2026
Best overall: MATEIN Personal Item Backpack
MATEIN's under-seat backpack is one of the most-reviewed travel backpacks on Amazon, and the reason is simple: it is the right shape. At about 18 x 12 x 7.8 inches it stays inside the 18 x 14 x 8 limit of American, Delta and Frontier with room to spare, has a separate laptop compartment, and a strap on the back slides over a rolling suitcase handle.
- About 18 x 12 x 7.8 inches
- Laptop compartment up to 15.6 inches
- Luggage strap, water-resistant fabric, metal zippers
Good: right-sized, organized, comfortable straps, sells in many colors.
Watch out: 12 inches wide is too wide for United's 10-inch personal item limit; it opens from the top, not fully like a suitcase.
Skip it if you fly United basic economy: get the WANDF.
Best for United basic economy: WANDF Personal Item Travel Bag 17x10x9
United's personal item limit of 17 x 10 x 9 inches is the one that catches most travelers, because almost every backpack is wider than 10 inches. WANDF built this bag to that exact size, so it works on United and, by default, on every airline with the bigger 18 x 14 x 8 limit.
- 17 x 10 x 9 inches
- 180° suitcase-style opening, 10 pockets
- 15.6-inch laptop sleeve; charging port pass-through
Good: fits the strictest major US airline, packs like a small suitcase.
Watch out: narrow, so it holds less than an 18 x 14 x 8 bag; the USB port is only a cable pass-through, so you still need your own power bank.
Skip it if you never fly United: a wider bag holds more.
Best capacity: Taygeer Carry On Backpack 35L
The Taygeer is another huge seller, popular for opening like a suitcase with three main compartments, a separate shoe bag and a wet pocket. At about 16.8 x 11 x 7 inches it fits under the seat on most US airlines and works as a handbag too, thanks to padded top handles.
- About 16.8 x 11 x 7 inches, about 1.7 lb
- 180° opening, 3 main compartments, 9 pockets
- Bonus shoe bag and wet pocket
Good: very organized, light, converts to a handbag.
Watch out: 11 inches is still over United's 10-inch width; looks sporty more than business.
Skip it if you need a sleek bag for work trips: see the tomtoc.
Best for Frontier: ECOHUB Travel Backpack 18x14x8
Built for Frontier's strict sizers, the ECOHUB measures about 18 x 13 x 7.8 inches, opens like a suitcase and has 13 pockets. It squeezes the most packing space out of the 18 x 14 x 8 limit.
- About 18 x 13 x 7.8 inches
- Suitcase-style opening, 13 pockets
- Charging port pass-through
Good: maximum space for budget airlines, well organized.
Watch out: fill it to bursting and it will not fit the sizer; too wide for United.
Skip it if you fly United or Allegiant.
Best for work trips: tomtoc Navigator 28L
The tomtoc looks like a smart laptop bag rather than a gym backpack. It has a clamshell main compartment that opens like a suitcase, a separate tech compartment for a 16-inch laptop that opens flat for security, and measures about 17.7 x 11.8 x 7.9 inches.
- 28 liters, about 17.7 x 11.8 x 7.9 inches
- Laptop compartment opens 90° to 180° for screening
- Water-resistant, PFAS-free fabric
Good: professional look, great tech organization, nearly Ryanair-sized.
Watch out: a newer listing with fewer reviews than the big sellers; too wide for United.
Skip it if you want the most packing space for the money.
Best for long weekends: Lossga Travel Backpack 30L
The Lossga uses every inch of the 18 x 14 x 8 limit, measured fully loaded, with three main compartments and nine pockets. It is a good pick for a long weekend on American, Delta or Frontier when you want the maximum the rules allow.
- 30 liters, 18 x 14 x 8 inches fully loaded
- 15.6-inch laptop compartment
- Tear-resistant fabric, metal zippers
Good: lots of space, sturdy, comfortable straps.
Watch out: at the very limit, so it may struggle under the seat on smaller regional jets.
Skip it if you fly United or regional jets often.
How to pack a personal item for a week
- Wear the bulkiest things. Boots, jacket and sweater go on your body, not in the bag.
- Use compression or packing cubes. Two small cubes keep a soft bag from bulging. See our small travel gear picks.
- Pack for 4 days, wash once. A travel clothesline and sink-washing let you stretch a 4-day wardrobe over a week.
- Liquids in a quart bag on top, so it comes out fast at security.
- Keep the power bank in the bag on you, never in a gate-checked bag. See power banks on planes.
FAQ
What size is a personal item on US airlines?
American and Frontier allow 18 x 14 x 8 inches, United 17 x 10 x 9 inches, JetBlue 17 x 13 x 8 inches and Allegiant 16 x 15 x 7 inches. Delta, Southwest and Alaska do not publish a size; the bag must fit under the seat.
Will a backpack count as a personal item?
Yes, if it fits under the seat in front of you and within your airline's personal item size. A backpack around 17 x 11 x 7 inches works on almost every US airline.
What is the personal item size for United basic economy?
17 x 10 x 9 inches. Basic economy on most United routes allows only a personal item, so a bag over 10 inches wide may have to be checked at the gate for a fee.
Can I bring a personal item and a carry-on?
On standard economy fares with most US airlines, yes. Basic economy on United and JetBlue, and the cheapest fares on budget airlines, include only the personal item.
Do airlines measure personal items?
Budget airlines such as Frontier use sizers at the gate and enforce strictly. Large airlines usually check visually, but they can and do measure on full flights.
Related reading
- The best carry-on luggage
- Thanksgiving travel 2026: best days to fly
- Europe packing essentials
- The best luggage trackers
Sources
- United Airlines: carry-on bags
- American Airlines: carry-on baggage
- Frontier: bag options
- Luggage Wiz: personal item sizes by airline (updated September 2026)
- Bag dimensions from each brand's Amazon listing, checked October 14, 2026
Fit more in: compression packing cubes make a personal item go further.
Affiliate Disclosure: The Finer Route is a participant in the Amazon Services LLC Associates Program. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. We also earn from some travel partners linked on this page. Product details and availability change, so check the listing before you buy.
