Our pick for the best carry-on for United Airlines flights is the Travelpro Crew Classic Compact Carry-On Spinner. The total exterior dimensions are exactly 22 × 14 × 9 inches, including its wheels and handles. Those dimensions put it right at United’ s published carry-on size limit. It’s also lighter than most premium softside suitcases. Finally, it offers convenient organization that’s helpful for short trips, both domestic and international.
For suitcases where every ounce counts, check out the Travelpro Maxlite 5 Compact Carry-On Spinner. If you prefer a hard-shell suitcase, my favorite option is the Monos Carry-On. Finally, for frequent travelers who don’t mind spending extra for a hard-shell with great warranty protection, the Briggs & Riley Essential Carry-On Spinner is my top luxury pick.
The most critical number is that total exterior measurement. Remember that many suitcases listed as “20- inch” or “21-inch” carry-ons end up being taller than 22 inches when you account for the wheels and any rigid handle.
Quick Comparison of the Best United Airlines Carry-Ons
| Carry-on luggage | Award | Exterior dimensions | Weight |
|---|---|---|---|
| Travelpro Crew Classic Compact | Best Overall | 22 × 14 × 9 in | 6.8 lb |
| Travelpro Maxlite 5 Compact | Best Lightweight Softside | 22 × 14 × 9 in | 5.1 lb |
| Monos Carry-On | Best Hardside | 22 × 14 × 9 in | 6.6 lb |
| Briggs & Riley Essential Carry-On Spinner | Best Premium | 22 × 14 × 9 in | 10 lb |
| Monos Carry-On Pro | Best With Laptop Pocket | 22 × 14 × 9 in | 7.78 lb |
| Samsonite Proxis Global Carry-On | Best Ultralight Hardside | 22 × 14 × 9 in | 4.7 lb |
All measurements above are the manufacturers’ published exterior dimensions, including wheels and fixed handles. Expandable suitcases should remain unexpanded when boarding a United flight.
United Airlines Carry-On Size and Baggage Rules
Maximum dimensions for carry-on luggage allowed by United Airlines are:
22 × 14 × 9 inches, or 56 × 35 × 23 centimetres
Dimensions include handle and wheels on the suitcase. Your bag needs to be small enough to fit in the overhead compartment.
Maximum dimensions for a personal item allowed by United Airlines are:
17 × 10 × 9 inches, or 43 × 25 × 22 centimetres
Your personal item must fit under the seat ahead of you. Examples of personal items include a small backpack, laptop case, shoulder bag, or purse.
How many bags can you bring?
When traveling on most United Economy, Economy Plus, Premium Plus, business- and first-class itineraries that allow bags, passengers are permitted to carry:
One full-size carry-on bag
One personal item
An umbrella, jacket, airport food and approved mobility devices may also be allowed in addition to the two bags above.
Does United Basic Economy include a carry-on?
This is where it gets tricky for travelers. Depending on itinerary, many United Basic Economy tickets will only allow one personal item. On many domestic trips you cannot bring a full-size carry on. An upgrade to a carry on is possible on some international flights, or if you have purchased your ticket using MileagePlus status or a qualifying United credit card.
Your personal item allowance can vary by route, ticket type and passenger eligibility.
Be sure to review the baggage allowance on your reservation prior to heading to the airport.
Does United have a carry-on weight limit?
United doesn’t list a specific maximum weight limit for regular carry-ons. Weight restrictions apply mostly to size and whether you can lift your own bags into the overhead bin.
Even a light suitcase has value. Beginning with a five pound suitcase instead of ten gives you about five extra pounds of usable packing space before the suitcase becomes too heavy to lift.
How We Selected These Carry-Ons
When testing for this article, I evaluated each piece of luggage based on five criteria that are especially important when traveling on United:
- Outside dimensions (when expanded): Include bags’ wheels and fixed handles in your measurement, not just the packing case itself.
- Suitability for United: Bonus points if the bag is guaranteed to fit when folded, with dimensions of 22 × 14 × 9 inches or less.
- Weight: The lighter your bag is, the easier it is to heft around and navigate through sprawling layovers.
- Build: Shell material. Wheel composition. Handles. Zippers. Compression mechanisms. Organization.
- Value: These picks are designed to serve different types of travelers, not just offer you seven similar-looking suitcases.
Ultimately, no carry-on is immune from being gate-checked on every flight. Bags that are the right size may still need to be checked at your gate if the overhead bins are full or if you’re boarding a smaller United Express plane with less baggage storage.
1. Travelpro Crew Classic Compact Carry-On Spinner
Best Overall Carry-On for United Airlines
The Travelpro Crew Classic Compact Carry-On Spinner is best suited to travellers who prefer a classic softside suitcase that adheres to United Airlines’ published carry-on size limit.
Its exterior dimensions measure 22 × 14 × 9 inches, including the wheels and handles. It weighs 6.8 pounds and provides approximately 38 litres of usable packing capacity.
These dimensions are important because Travelpro also sells larger carry-ons measuring around 23 inches tall. Those suitcases may be accepted on many flights, but they technically exceed United’s stated maximum dimensions.
The Crew Classic Compact removes that uncertainty while retaining the practical features frequent travellers expect from Travelpro. Its soft exterior provides a little flexibility when fitting the suitcase into an overhead bin, while the four spinner wheels make it easier to navigate airport terminals and narrow aircraft aisles.
The interior is also well suited to traditional packing. Unlike a clamshell hardside suitcase, you can open the lid without spreading the entire bag across a hotel-room floor. Exterior pockets also provide convenient access to documents and smaller travel essentials.
Why It Fits This Guide
- Exact 22 × 14 × 9-inch exterior dimensions
- More durable construction than many ultralight suitcases
- Useful exterior pockets
- Four-wheel spinner design
- Well suited to frequent domestic flyers
Consider another bag if: Your main priority is an ultralight suitcase with the lowest possible empty weight.
2. Travelpro Maxlite 5 Compact Carry-On Spinner
Best Lightweight Softside Carry-On
The Travelpro Maxlite 5 Compact Carry-On Spinner is ideal for travellers who want a lightweight softside suitcase that is easy to lift into an overhead compartment.
When shopping, make sure you select the model specifically labelled Compact Carry-On. Travelpro lists this version at 22 × 14 × 9 inches and 5.1 pounds.
The standard Maxlite 5 Carry-On Spinner is larger at approximately 23 × 14.5 × 9 inches. Although it may be accepted on many flights, it technically exceeds United Airlines’ published carry-on dimensions.
Because the compact version weighs only 5.1 pounds, more of the packed weight can be allocated to clothing, shoes and other travel items. The lower empty weight also makes a noticeable difference when moving through connecting airports or lifting the suitcase above shoulder height.
Its softside construction provides slightly more flexibility than a rigid shell. However, overfilling the exterior pockets or using the expansion feature could push the bag beyond United’s permitted depth.
Even lightweight luggage can become oversized when it is packed beyond its intended capacity.
Why It Fits This Guide
- Extremely lightweight at only 5.1 pounds
- Matches United’s published carry-on dimensions
- Flexible softside construction
- Exterior pockets provide quick access
- Easier to lift than most premium carry-ons
Consider another bag if: You want a more structured interior or the highest possible level of impact protection.
3. Monos Carry-On
Best Hardside Carry-On for United Airlines
The Monos Carry-On is our top recommendation for travellers who want durable hardside luggage that matches United Airlines’ published carry-on limit.
Its exterior dimensions measure exactly 22 × 14 × 9 inches, including the wheels and handles. It weighs 6.6 pounds and provides approximately 39.9 litres of packing capacity.
The polycarbonate shell offers more structure than a softside suitcase. This can be useful when travelling with items that could be compressed or damaged inside a flexible bag.
Its clamshell layout divides belongings between two main packing compartments. A compression panel helps control bulky clothing, while the zippered section prevents loose items from falling out when the suitcase is opened.
The main disadvantage is that a rigid suitcase cannot be squeezed into an overhead compartment as easily as some softside models. You will also need enough room to open both halves of the suitcase at your destination.
Why It Fits This Guide
- Matches United’s 22 × 14 × 9-inch requirement
- Relatively lightweight for a hardside suitcase
- Durable polycarbonate construction
- Interior compression panel
- Clean and organised packing layout
Consider another bag if: You want exterior pockets or frequently need to open your suitcase in a confined space.
4. Briggs & Riley Essential Carry-On Spinner
Best Premium Carry-On for United Airlines
The Briggs & Riley Essential Carry-On Spinner is designed for frequent flyers who value long-term durability more than having the lightest possible suitcase.
When closed, the bag measures 22 × 14 × 9 inches. Its expandable depth can reach approximately 11.5 inches, so the expansion feature should remain unused when carrying it onto a United Airlines flight.
The softside version weighs approximately 10 pounds and is constructed from durable ballistic nylon.
Instead of relying on a simple zippered expansion panel, Briggs & Riley uses a compression system. This allows travellers to expand the suitcase while packing and then compress it back towards its original nine-inch depth.
Another useful feature is the flat interior packing surface. By positioning the handle tubes on the exterior of the suitcase, Briggs & Riley reduces the uneven channels commonly found inside softside luggage.
The main disadvantage is weight. At approximately 10 pounds, the Essential Carry-On is almost twice as heavy as the Travelpro Maxlite 5 Compact.
That may not matter to travellers who rarely encounter cabin weight restrictions, but it makes the suitcase more difficult to lift into an overhead compartment.
Why It Fits This Guide
- Compatible with United when kept unexpanded
- Durable ballistic-nylon exterior
- Effective compression system
- Flat interior surface for more even packing
- Strong warranty for long-term travellers
Consider another bag if: You prefer an ultralight suitcase or frequently travel with airlines that enforce strict cabin weight limits.
5. Monos Carry-On Pro
Best United Carry-On With a Laptop Compartment
The Monos Carry-On Pro is ideal for business travellers who want quick access to a laptop without opening the suitcase’s main packing compartment.
Like the standard Monos Carry-On, the Pro version measures 22 × 14 × 9 inches. Its front compartment can hold a laptop measuring up to approximately 16 inches, along with a tablet, paperwork and smaller electronic accessories.
This design solves one of the biggest disadvantages of traditional hardside luggage. Travellers can remove a laptop at airport security or during a layover without opening the main clamshell compartment.
The compromise is reduced packing capacity. The front compartment occupies space that would otherwise be available inside the main suitcase.
Placing several heavy electronic devices inside the front section may also affect the bag’s balance.
Nevertheless, it is a practical choice for short business trips where convenient laptop access matters more than maximum clothing capacity.
Why It Fits This Guide
- Exact 22 × 14 × 9-inch dimensions
- Protected front laptop compartment
- Accommodates laptops up to approximately 16 inches
- Durable polycarbonate construction
- Keeps work equipment separate from clothing
Consider another bag if: You do not travel with a laptop or want the largest possible interior packing capacity.
6. Samsonite Proxis Global Carry-On Spinner
Best Ultralight Hardside Carry-On
The Samsonite Proxis Global Carry-On Spinner stands out because it combines United-compatible dimensions with an exceptionally low empty weight.
Samsonite lists the suitcase at 22 × 14 × 9 inches and approximately 4.7 pounds. Instead of using a conventional polycarbonate exterior, the Proxis is constructed from Samsonite’s proprietary Roxkin material.
As a result, the Proxis is lighter than some softside luggage and considerably lighter than most premium hardside suitcases.
It is a particularly appealing option for travellers who want a structured shell but find heavier suitcases difficult to lift into overhead compartments.
Its dual spinner wheels help distribute the packed weight, while the divided interior keeps clothing contained when the suitcase is opened.
The main disadvantage is price. The Proxis belongs to Samsonite’s premium collection, while less expensive hardside suitcases may provide sufficient durability for occasional travellers.
Why It Fits This Guide
- Exterior dimensions of 22 × 14 × 9 inches
- Extremely lightweight at approximately 4.7 pounds
- Structured hardside protection
- Dual spinner wheels for easier handling
- Excellent option for travellers concerned about lifting
Consider another bag if: You want a more affordable suitcase or prefer traditional polycarbonate construction.
Softside or Hardside: Which Is Better for United?
Neither bag is inherently superior for traveling United.
Opt for a softside carry-on when:
- You like exterior pockets.
- You want a flex-y suitcase.
- You want a lid-style opening.
- You desire a lighter weight bag or traditional packing design.
- You regularly fly regional layovers.
Opt for a hardside carry-on when:
- You desire more rigid protection.
- You’ll be packing electronics or crushable items.
- You prefer a divided clamshell design.
- You want an in-built TSA-style combination lock.
- You are diligent about not overpacking.
Softside suitcases offer more give, but that doesn’t mean an overstuffed bag will make the cut. An overstuffed pocket or popped zipper can easily expand a nine-inch deep bag over United’s limit.
Can a Correctly Sized Carry-On Still Be Gate-Checked?
Yes.
Just because your suitcase adheres to United’ dimensions, it does not mean it will stay in the cabin on every flight. Any carry-on that will not fit due to full overhead bins or smaller bins on the aircraft will be checked at the gate.
Smaller overhead bins are common on some United Express regional flights. Even if your suitcase matches the airlines published dimensions, it may not fit in the overhead bin on smaller aircraft.
Try to keep any medication, IDs, keys, money, lithium batteries and important electronics in your personal item. If your suitcase does get checked at the gate, you will want to remove these items quickly.
Common United Carry-On Mistakes
Trusting the product’s advertised size
Many suitcases measure only the dimensions of the bag’s body. When they say “20- inch” or “21-inch,” they aren’t counting the wheels and handles, which United does. So be sure to measure the total exterior dimensions when comparing bags.
Expanding the suitcase
An otherwise compliant bag that says it’s nine inches at the deepest point when closed may expand to 11 inches or more. Try your bag out before you leave for the airport, and leave empty expandable bags in their compact form until after you’ve boarded.
Overloading external pockets
Softside front pockets are not included in most published depth measurements, and can often expand well beyond those limits. Avoid packing anything other than flat items inside them.
Assuming every Basic Economy ticket includes a carry-on
Not every Basic Economy ticket comes with a carry-on bag these days. Check your specific reservation to find out what’s allowed—it can vary by route and member benefits.
Packing valuables where they cannot be removed
Gate checking is possible even if your bag adheres to carry-on requirements. Keep valuable items and those you’ll need during your flight in a personal item instead.
Final Verdict
Our pick for the best overall carry-on for United is the Travelpro Crew Classic Compact Carry-On Spinner. It conforms to United’s 22 × 14 × 9-inch guideline while hitting all of our important criteria for weight, organization, and durability.
Go with the Travelpro Maxlite 5 Compact if weight is your biggest concern. The Monos Carry-On is our pick for the best hard-shell carry-on overall, and the Samsonite Proxis Global Carry-On has the lowest empty-weight of any hard-shell option.
Business travelers who need easy laptop access may want to consider the Monos Carry-On Pro. And the Briggs & Riley Essential Carry-On Spinner is still our top pick for travelers who value build quality and warranty coverage above all else.
No matter which option you choose, double-check the outer dimensions of the specific model you plan to purchase. Bags that look nearly identical from the same lineup can actually vary by over an inch—one that puts it over United’s size restriction.