Is a Briefcase a Personal Item? What US Airlines Say

Personal item vs carry-on

Most US airlines let you bring two things into the cabin:

• A carry-on bag, which goes in the overhead bin. Usually a roller suitcase or a duffel.
• A personal item, which must fit under the seat in front of you. Usually a purse, a laptop bag, a small backpack, or a briefcase.

The personal item is the bag you can reach during the flight. That's why it's where the laptop, the passport, the charger and the documents for tomorrow's meeting belong.

What Delta and JetBlue list as personal items

Here's what the airlines' own pages said when we checked them on October 15, 2026.

Delta: "Each passenger flying with Delta can bring 1 carry-on bag and 1 personal item free of charge (such as a purse, laptop bag or item of similar size that will fit underneath the seat in front of you)." Delta's list of approved personal items includes "purse, briefcase, small backpack" and, separately, "1 laptop bag". Its carry-on limit is 22 x 14 x 9 inches, including handles and wheels.

JetBlue: "Each customer is allowed one carry-on bag and one personal item (purse, small backpack, briefcase, laptop, etc.)" and personal items "must be placed beneath the seat in front of you." JetBlue publishes a personal-item maximum of 17 x 13 x 8 inches.

Alaska Airlines publishes its own carry-on size page. Read it before you fly Alaska; we haven't summarized it here.

Two cautions. First, airline rules change and fares differ: some basic fares allow the personal item only. Second, the gate agent has the final say on the day. A bag that "should" count can still be questioned if it's visibly overstuffed.

Measuring your bag

Don't trust the name of the bag; trust a tape measure. Measure it the way the airline will see it: packed.

1. Length: the longest side, across the front.
2. Height: from the base to the top of the bag, not counting soft handles that fold flat.
3. Depth: front to back at the thickest point, with your normal load inside.

Then compare all three numbers against your airline's published limit. Depth is the one that catches people out: an empty briefcase is slim; one with a stuffed front pocket isn't.

If the bag holds a laptop, measure the laptop too. A sleeve that is too tight makes the bag bulge, and bulging is what turns a personal item into a debate. Our 16-inch laptop bag size guide walks through it.

The Alto BriefcaseWater-resistant nylon twill with full-grain leather trim, handles and front pocket. Fits a 16" MacBook Pro · 13 pockets · 3.3 lb · black or brown.

See the Alto

The Alto's dimensions

For reference, here are the Alto Briefcase's published numbers against JetBlue's personal-item limit.

On paper, the Alto sits inside that box on every side. That is a statement about dimensions, not a promise about your flight: check your airline, and don't pack it past its shape. TSA doesn't approve bag sizes at all; the airline sets the limit and the gate agent applies it.

What goes under the seat in practice

The space under an economy seat is rarely a neat rectangle. There's often a seat-frame bar, a life-vest pouch or an entertainment box eating into one side. A few things help:

• A bag that stands upright slides in on its base and doesn't slump into your feet. The Alto is structured and stands up on its own.
• Handles on top let you pull it out without kneeling in the aisle.
• A quick-access pocket means you can reach your phone or passport without taking the whole bag out. The Alto has a zippered one on the front.
• Keep the laptop reachable. If you'll work in flight, pack it against the back panel so it comes straight out.

One verified buyer's first trip with the bag: "Using it the first time on a trip to DC. I love it! So light!" (L., verified buyer, May 14 2024).

If you're also wheeling a carry-on, a trolley sleeve lets the briefcase ride on the suitcase through the terminal; see what a trolley sleeve does.

Check before you fly

A short list for the night before:

• Read your airline's personal-item rule for your fare.
• Measure the packed bag: length, height, depth.
• Laptop where it can come out in one move. TSA asks you to remove laptops for screening unless you have TSA PreCheck.
• Spare batteries and power banks in the cabin, never in checked bags. Our power bank carry-on rules explain why.
• Anything unusual? Look it up on TSA's What Can I Bring? list.
• Flying with two laptops? See how many laptops you can bring on a plane.

Measure once, check the airline's page, and the briefcase stays where it should: at your feet.

FAQ

Does a briefcase count as a personal item?

On Delta and JetBlue, yes, by name. Delta lists a briefcase among its approved personal items, and JetBlue's personal-item examples include a briefcase. It still has to fit under the seat in front of you, and other airlines set their own rules, so check before you fly.

What is the personal item size limit?

It varies by airline. JetBlue publishes a personal-item maximum of 17 x 13 x 8 inches. Delta describes it as an item that will fit underneath the seat in front of you. Look up your airline's page for the current numbers before every trip.

Can I bring a briefcase and a carry-on suitcase?

On airlines that allow one carry-on and one personal item, yes. Delta and JetBlue both allow one carry-on bag plus one personal item. Basic or restricted fares can be stricter, so check the rules for the fare you actually bought.

Do I have to take my laptop out of my briefcase at security?

Usually. TSA asks travelers to remove laptops and place them in a separate bin for X-ray screening. TSA PreCheck travelers do not need to remove laptops. The final decision rests with the TSA officer.

Does TSA approve bag sizes?

No. TSA screens what is inside your bag; airlines set size limits. The Alto measures 16.1 x 11 x 5.1 inches, which on paper sits inside JetBlue's published personal-item size. Check your own airline before you fly.

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