The short answer: a personal item goes under the seat in front of you, while a carry-on is stored in the overhead bin. But the exact size limits vary by airline — and choosing the wrong bag can mean checking it at the gate or paying an extra baggage fee.
Yet until writing this very article, I was never really sure what the difference between them was. Was I walking onto every flight with two carry-ons? Or, more likely, overstuffing a semi-small bag that probably could’ve behaved like a personal item, yet once I was through with it, looked more like a separate piece of luggage all on its own?
Looking around the airport only makes me more confused. The most sane seem to be carrying a small backpack, like the kind you’d take to work, plus a carry-on. There are also travelers with slightly larger duffels sitting on top of their rolling luggage. And then there are the bag ladies with a rolling suitcase, a backpack, and an extra tote bag, which counts as — I don’t know — an extra-personal personal item? (If there’s no zipper, does it even count as a bag?)
For these reasons, I’ve delved into research mode to solve the personal item puzzle. In this guide, we’ll look at the difference between a carry-on and personal item, compare airline size limits, explain what to pack in each, and share tips for choosing luggage that works well together.
Photo by Dimitris Asproloupos on Unsplash
Carry-On vs. Personal Item: What’s the Difference?
Here’s the main difference between a personal item and a carry-on:
- the personal item needs to fit under the seat in front of you
- the carry-on goes into the overhead bin
That’s really the easiest way to think about it.
A personal item is typically your smaller bag, like a purse, tote, or travel backpack, where you can keep all the things you want within arm’s reach during the flight. Think: headphones, laptop, a book, some snacks, and, for me, an emergency sweater.
A carry-on, then, is part of your actual luggage. It’s usually a small roller suitcase or larger travel backpack with clothes, shoes, toiletries, and everything else you need for the trip. It stays in the overhead compartment during the flight and has its own set of size restrictions.
Where things get confusing is that “personal item” describes how and where you’re bringing the bag — not necessarily a specific type of bag. A backpack can be a personal item, yet so can a duffel or tote. The question is whether it’s small enough to fit underneath the seat, and within your airline’s personal-item size limits.
So, yes, apparently an aggressively stuffed tote bag can be a personal item. Whether the gate agent agrees with my interpretation is another story.
How big can a personal item be? Your airline decides.
There’s no single, universal size for a carry-on bag or personal item. Each airline sets its own limits. And while the three major U.S. airlines are fairly consistent on their carry-on dimensions, personal-item rules can vary quite a bit:
| Airline | Carry-on size | Personal item size |
| United Airlines | 22 x 14 x 9 in | 17 x 10 x 9 in |
| American Airlines | 22 x 14 x 9 in | 18 x 14 x 8 in |
| Delta Airlines | 22 x 14 x 9 in | No specific dimensions; must fit under the seat |
You can view more airline size allowances here.
Key takeaway: Always double-check your airline’s baggage policy before packing, especially if you’re flying a budget carrier or booked a restrictive economy fare.
What counts as a personal item?
This is where my airport observations finally start to make sense: A personal item can be pretty much anything that fits within your airline’s size requirements and underneath the seat in front of you.
- small backpack
- purse or handbag
- tote bag
- laptop bag or briefcase
- camera bag
- small duffel bag
- belt bag or fanny pack
So the tote bag definitely counts, zipper or not, and a backpack isn’t automatically considered a carry-on just because you could theoretically pack three days’ worth of clothes into it.
What counts as a carry-on bag?
A carry-on is the second piece of luggage you’re allowed to bring into the cabin. Unlike your personal item, it’s generally designed to go in the overhead bin.
- small rolling suitcase (my favorite is LEVEL8’s Voyageur)
- weekender or duffel bag
- larger travel backpack
- soft-sided suitcase
- garment bag that meets the airline’s size restrictions
Again, what matters here are the dimensions. That duffel sitting on top of someone’s roller suitcase could technically be either a personal item or a carry-on — it all comes down to how big it is and whether it fits under the seat in front of you.
What can I pack in a personal item vs. carry-on?
Rules-wise, there is essentially no difference between what you’re allowed to pack in a personal item versus a carry-on because both bags go in the main cabin. You can generally pack things like clothes, shoes, books, snacks, electronics, cameras, laptops, chargers, toiletries, and medications in either one.
The main restrictions to keep in mind are:
- Liquids: Liquids, gels, creams, pastes, and aerosols generally need to follow TSA’s 3-1-1 rule when going through security. Containers of 3.4 ounces (100 mL) or less need to be packed into 1 quart-size bag and only 1 bag is allowed per person.
- Laptops, cameras, and other electronics: These can go in either your personal item or carry-on. The FAA recommends keeping electronics with lithium batteries, basically things like your laptop, camera, tablet, or phone, with you in the cabin rather than in checked luggage.
- Power banks and spare batteries: Portable chargers/power banks and loose rechargeable batteries for things like cameras cannot go in your checked luggage. Keep them in your personal item or carry-on. If your carry-on gets checked at the gate, you’ll be asked to take them out and bring them onto the plane with you.
- Sharp items: Some small grooming tools are totally fine — nail clippers, tweezers, and disposable razors, for example, can generally go in your personal item or carry-on. Larger or genuinely sharp items are a different story: knives and most other cutting tools need to go in checked luggage.
For what it’s worth: This is what I pack in my personal item
- Laptop and camera
- Phone and computer chargers
- Headphones
- Medication
- Chapstick and hand sanitizer
- Toothbrush and travel-size toothpaste
- Comb/hairbrush
- Warm socks for long-haul flights
- A book
- Planner or notebook
What goes in my carry-on?
If I’m traveling with just a carry-on, then I’ll pack my clothes, toiletries, shoes, accessories, hair tools, and whatever else I’ve convinced myself is essential for that trip.
If I’m also checking a bag, though, I use my carry-on a little differently. I’ll keep a spare outfit in there in case my checked bag gets lost, plus toiletries and anything I want easy access to. I also sometimes move heavier or clunkier items, like a curling iron or an extra pair of shoes, into my carry-on rather than my check-in bag.
My personal item then becomes my keep-with-me-at-all-costs bag, while your carry-on handles everything else you need for the trip.
How to choose a good carry-on and personal item combo
Once you know the difference between the two, choosing the right bags becomes a lot easier. For me, the biggest consideration is making sure they actually work together. There is, truly, nothing worse than racing through an airport with a tote bag sliding off your shoulder while you’re simultaneously balancing a rolling suitcase behind you.
For a carry-on, I look for a few things:
- Airline-friendly dimensions: A 22 x 14 x 9-inch suitcase works within the standard carry-on limits of many major U.S. airlines, though you should always check your specific carrier.
- Good wheels: If you’ve ever dragged a bad suitcase through an airport, you know why this matters. I prefer four spinner wheels that can handle quick turns and long terminal walks.
- A sturdy handle: It should extend and retract easily without feeling like it’s going to give up halfway through the trip.
- Useful interior organization: Compression systems (my saviors), dividers, and zippered compartments make a big difference when you’re trying to fit an entire trip into one small suitcase.
- Durability without too much weight: Your suitcase shouldn’t use up half your baggage allowance before you’ve put anything inside it.
For a personal item, I want something that comfortably fits my laptop and camera, has a secure place for my passport and smaller essentials, and isn’t so deep that finding my headphones requires unpacking the entire thing at 30,000 feet.
My carry-on choice: The LEVEL8 Voyageur
One of the reasons I’ve been obsessed with my LEVEL8 carry-on is because my personal item comfortably sits on top of it no matter what. (Read a full review here.) The wide handle means you can’t slide a traditional luggage sleeve over it, but you can drape a backpack over the handle almost like the suitcase is wearing it. Plus, the wide, flat top also gives whatever bag I put there a sturdy enough surface to sit on, without falling off as I roll through the airport.
A few features that stand out to me:
- Wide handle design: provides a stable surface for placing a backpack
- Flat interior: creates more usable packing space
- Smooth spinner wheels: easier maneuverability through airports
- Wet/dry storage: useful for toiletries or damp items
- Compression features: helps organize clothing and travel essentials
FAQs About Carry-Ons and Personal Items
Can a backpack be a personal item?
Yes. Your backpack must meet your airline’s personal-item requirements and fit underneath the seat in front of you. A small work or daypack is also fine — but a larger travel backpack may count as your carry-on.
Can I bring a backpack and a carry-on?
Generally, yes. Many airline tickets allow one carry-on plus one personal item, meaning you can bring a carry-on suitcase and use a small backpack as your personal item. Baggage allowances do vary by airline and fare, so always check before flying.
Does a purse count as a personal item?
Yes. Purses and handbags are among the most common personal items. Just remember that if you’re already bringing another personal item, say, a backpack, you can’t necessarily bring your purse as a second personal item.
Can I bring two personal items instead of a carry-on?
I mean, from what I understand, as long as one fits in the overhead compartment and the other underneath your seat, you should be golden.
Does a pillow count as a personal item?
It depends on the airline. I always make it on board with my neck pillow; it’s usually strapped onto the outside of my personal item, and I’ve never had any trouble with it. But if you’re bringing a full-on pillow, that’s probably a different story.
What happens if my personal item is too big?
If your bag doesn’t meet your airline’s personal-item limits, you may be required to treat it as a carry-on or check it—and potentially pay the associated baggage fee. This is particularly worth watching on airlines that enforce baggage dimensions at the gate.
Does a yoga mat count as a personal item?
As a certified yoga teacher, I almost always travel with my mat. Here’s what I found out about traveling with it.
- Yoga mat inside/attached to your carry-on: generally part of that carry-on, provided the whole thing complies with the airline’s rules.
- Yoga mat in a separate yoga-mat bag: potentially your carry-on or personal item, depending on its size and whether the airline accepts it in the relevant stowage space.
- Carry-on + personal item + separately carried yoga mat: don’t assume all three will be allowed. The mat could be treated as a third item — check with the airline beforehand!
The bottom line
After all that, the personal item vs. carry-on debate is much simpler than I’d made it out to be:
- personal item under the seat
- carry-on overhead
Everything else, from backpacks and totes to duffels and apparently even pillows, comes down to size and your airline’s particular rules. Now, at least, I can walk through the airport knowing exactly how many bags I’m allowed to be carrying.
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