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Best Carry-On Luggage for Spirit and Frontier Size Limits

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Researched comparison

Gate note · the short answer

Our top pick is the Travelpro Maxlite 5 International Expandable Spinner. It fits both Spirit and Frontier limits when unexpanded, at 21.75 by 15.75 by 7.75 inches overall. It weighs 5.3 pounds, so it leaves more weight room for clothes. The soft shell also gives a little give at a full bin.

Compare at a glance

Comparison

Airline size rules and fees change often. Check Spirit's official bag page and Frontier's official bag options page before you fly.

How these compare
ProductBest forKey specPrice range
Travelpro Maxlite 5 International Expandable SpinnerLightest soft shell pickOverall 21.75 x 15.75 x 7.75 inches, 5.3 poundsMid-range. Check current price on Amazon
Travelpro Maxlite 5 Compact Carry-On Expandable SpinnerTight sizer checksOverall 22 x 14 x 9 inches, 5.1 poundsMid-range. Check current price on Amazon
American Tourister Moonlight Carry-On SpinnerHard shell on a budgetOverall 22 x 15 x 9.5 inches, 7.83 poundsBudget. Check current price on Amazon
Samsonite Proxis Global Carry-On SpinnerLight hard shellOverall 22 x 14 x 9 inches, 4.7 poundsPremium. Check current price on Amazon
Coolife 20-Inch Hardside Carry-OnSimple hard shell21.7 x 14.9 x 9.2 inches, 6.4 poundsBudget. Check current price on Amazon

How we choose

How we research

We compared specs, maker data and owner reviews for 14 carry-on models, then kept five that met the size test below. Size fit got 40 percent, weight 25 percent, usable space 20 percent, and wheels, handle and lock 15 percent. Spirit lists a carry-on limit of 22 x 18 x 10 inches, including handles and wheels. Frontier lists a carry-on limit of 24 x 16 x 10 inches, including handles, wheels and straps, and a 35 pound carry-on limit. Both airlines charge for a carry-on on basic fares. Only the personal item is free on those fares. In plain terms, the safe box is 22 inches long, 16 inches wide, and 10 inches deep, with wheels and handles counted. Every bag below meets that box when unexpanded.

Older listings for the Samsonite Freeform still show 21.25 x 15.25 x 10 inches. The current Samsonite page lists the Freeform Carry-On Spinner at 23 x 15 x 9.75 inches overall. That current size is over the Spirit length limit, so we left it out of this guide. Always check the overall size on the current maker page, not just the name on the bag.

Our full method

The picks

1

Travelpro Maxlite 5 International Expandable Spinner

  • Overall 21.75 x 15.75 x 7.75 inches
  • 5.3 pounds
  • 39 liters
  • expands up to 2 inches
  • For travelers who want the lightest spinner that still fits both airlines, including frequent flyers who lift a bag into a bin often.

    Key specs are overall 21.75 x 15.75 x 7.75 inches, 5.3 pounds, and 39 liters. It expands up to 2 inches. It has a two position PowerScope Lite handle, four spinner wheels, lid and side pockets, and hold down straps. The DuraGuard fabric resists water and stains.

    Pros:

    • Fits both airline limits when unexpanded
    • Light weight for a spinner
    • Two position handle and four spinner wheels

    Con: A full bag can tip when a heavy item sits on top, a point raised in owner comments.

    Owner review themes, in our own words, center on light weight, smooth rolling, and a size that fits bins on many routes, with room beyond its small case size. Some mention firm zipper pulls and tipping when loaded on top.

    Price tier: Mid-range. Check current price on Amazon.

    Check current price on Amazon

    2

    Travelpro Maxlite 5 Compact Carry-On Expandable Spinner

  • Overall 22 x 14 x 9 inches
  • 5.1 pounds
  • 38 liters
  • expands up to 2 inches
  • For travelers who worry most about a strict sizer, with overall size at the Spirit limit and no extra length to argue about.

    Key specs are overall 22 x 14 x 9 inches, 5.1 pounds, and 38 liters. It expands up to 2 inches. It has four spinner wheels and a two position handle.

    Pros:

    • Overall length sits at the Spirit limit, not over it
    • Light weight for a spinner
    • Compact case size leaves room in a full bin

    Con: The smaller case holds less than a full size 21 inch bag, so heavy packers may run out of room.

    Owner review themes, in our own words, focus on easy lifting, fewer gate questions, and smooth wheels. Some owners say the compact size forces hard choices on longer trips, and to keep expansion closed for a sizer check.

    Price tier: Mid-range. Check current price on Amazon.

    Check current price on Amazon

    3

    American Tourister Moonlight Carry-On Spinner

  • Overall 22 x 15 x 9.5 inches
  • 7.83 pounds
  • expands 1.5 inches
  • For travelers who want a hard shell and bright colors, without a premium price tag, on short trips.

    Key specs are overall 22 x 15 x 9.5 inches, 7.83 pounds, and expansion of 1.5 inches. It has single spinner wheels, an ABS and polycarbonate shell, and a 10 year limited warranty from the maker. Measure with wheels included before you fly.

    Pros:

    • Hard shell helps protect clothes from rain and bumps
    • Bright colors are easy to spot on a belt
    • Single spinner wheels roll in any direction

    Con: The hard shell shows scuffs more plainly than a soft fabric bag, a theme in owner comments.

    Owner review themes, in our own words, praise the bright look, easy roll, and weekend-trip room. Owners also note it is heavier than a same-size soft shell, and single wheels can feel less stable on rough floors.

    Price tier: Budget. Check current price on Amazon.

    Check current price on Amazon

    4

    Samsonite Proxis Global Carry-On Spinner

  • Overall 22 x 14 x 9 inches
  • 4.7 pounds
  • interior 19 x 13.1 x 8.7 inches
  • For travelers who want a hard shell without extra weight. It is the lightest hard shell in this guide.

    Key specs are overall 22 x 14 x 9 inches, 4.7 pounds, and a Roxkin shell. It has a built in TSA lock, a USB port in carry-on sizes, and an internal battery pocket. Note that a battery is not part of the bag. Board unexpanded for a strict sizer check.

    Pros:

    • Very light for a hard shell bag
    • Fits both airline limits when unexpanded
    • Built in TSA lock and USB port in carry-on sizes

    Con: The interior is smaller than the outside size suggests, because the shell and wheel housing take room.

    Owner review themes, in our own words, focus on the light shell, the smooth double wheels, and a clean look that holds up on many trips. Some owners say the USB port is only useful if you bring your own power bank and cable.

    Price tier: Premium. Check current price on Amazon.

    Check current price on Amazon

    5

    Coolife 20-Inch Hardside Carry-On

  • 21.7 x 14.9 x 9.2 inches
  • 6.4 pounds
  • 38 liters
  • ABS and PC shell
  • For travelers who want a simple hard shell with no extra features to learn, on weekend trips.

    Key specs are 21.7 x 14.9 x 9.2 inches, weight 6.4 pounds, capacity 38 liters, and an ABS and PC shell. It has a TSA lock and four spinner wheels. The size leaves a small margin on every side of the safe box.

    Pros:

    • Fits both airline limits with room to spare on length
    • Hard shell with a TSA lock
    • Four spinner wheels for easy rolling

    Con: Owners note that the shell can dent on hard knocks, and a dented corner can make the lid sit less flush.

    Owner review themes, in our own words, praise the low weight for a hard shell, smooth wheels, and a size that fits most bins. Owners also mention care needed with a full zipper, and fewer pockets than some soft shell bags.

    Price tier: Budget. Check current price on Amazon.

    Check current price on Amazon

    Questions to ask before you buy

    How do Spirit and Frontier size limits differ?

    Spirit allows a carry-on up to 22 x 18 x 10 inches, while Frontier allows a carry-on up to 24 x 16 x 10 inches. The difference is length and width, not depth: a 23 inch bag may pass Frontier but fail Spirit, and a 17 inch bag may pass Spirit but fail Frontier. Measure it packed, with wheels and handles included.

    How much should a carry-on weigh for Frontier?

    Frontier lists a 35 pound limit for a carry-on, including handles, wheels and straps. A light bag helps, because the bag weight counts toward that limit. Spirit does not list a separate carry-on weight limit, but notes a bag may need to be checked if it cannot be stowed safely. Pack heavy items low, near the wheels, and weigh the bag at home.

    Should I use the expansion zipper on Spirit or Frontier?

    No, not for a strict sizer check, as expansion adds depth and a fully expanded bag may not fit a sizer. Board unexpanded, and use expansion only if the bag will be checked.

    Is a soft shell or a hard shell better for budget airlines?

    A soft shell gives a little give at a full bin and outside pockets for quick access. A hard shell gives protection from rain and bumps and a rigid shape that keeps clothes flat. For Spirit and Frontier, the shell type matters less than the overall size. Pick the shell you like, then check the overall size first.

    What size personal item can I bring for free?

    You can bring one personal item for free on both airlines, up to 18 x 14 x 8 inches, fitting under the seat in front of you. A small backpack, tote, or laptop bag can work if it fits that box and under the seat when packed. Do not count a carry-on as a personal item. If it is too large, it can be charged as a carry-on at the gate.

    Frequently asked questions

    Do Spirit and Frontier charge for a carry-on on basic fares?

    Yes. Both airlines charge for a carry-on on basic fares. Only the personal item is free on those fares. Buy the allowance early, because gate prices tend to be higher.

    Will a 22 inch bag always pass Spirit?

    No, not always. Spirit measures 22 x 18 x 10 inches including handles and wheels. A bag sold as 22 inches may measure more overall, so pack it and measure it again before you fly.

    Will a bag that fits Frontier also fit Spirit?

    Not always. Frontier allows 24 inches in length, while Spirit allows 22 inches. A 23 or 24 inch bag can pass Frontier and fail Spirit. Use the safe box in this guide, 22 by 16 by 10 inches, if you fly both airlines.

    What happens if my bag fails the sizer?

    The airline can require the bag to travel as a checked bag, and a fee can apply. Gate fees tend to be higher than fees paid at booking. Measure at home, and leave a small margin if you can.

    Should I buy a bag with a USB port?

    Only if you will use it. A USB port needs your own power bank and cable, and battery rules still apply. If you do not need it, a simpler bag gives you fewer parts that can break.

    Can I use packing cubes with these bags?

    Yes. Packing cubes help keep clothes flat and make repacking faster. They do not change the outside size of the bag.

    Sources

    • Spirit Airlines, Bag Info, https://customersupport.spirit.com/en-US/category/article/KA-01535, checked 2026-11-02
    • Frontier Airlines, Bag Options, https://www.flyfrontier.com/travel/travel-info/bag-options/?mobile=true, checked 2026-11-02
    • Travelpro, Maxlite 5 International Expandable Carry-On Spinner, https://travelpro.com/products/maxlite%C2%AE-5-international-expandable-carry-on-spinner?variant=19641106956386, checked 2026-11-02
    • Samsonite, Proxis Global Carry-On Spinner, https://shop.samsonite.com/luggage-carry-on-luggage/proxis-global-carry-on-spinner/141845XXXX.html?dwvar_141845XXXX_color=1418451686&cgidmaster=proxis, checked 2026-11-02
    • American Tourister, Moonlight Carry-On Spinner, https://shop.americantourister.com/luggage/moonlight-carry-on/92504XXXX.html?dwvar_92504XXXX_color=925045837&cgid=luggage, checked 2026-11-02
    • Samsonite, Outline Pro Global Carry-On Spinner, https://shop.samsonite.com/luggage-carry-on-luggage/outline-pro-global-carry-on-spinner/137392XXXX.html?bvstate=pg%3A22%2Fct%3Ar, checked 2026-11-02
    • Frontier Airlines, Bag Size Limits FAQ, https://faq.flyfrontier.com/help/bags-seats-general-info-what-are-the-sizes-and-weight-limits-for-bags, checked 2026-11-02
    SL

    Stowlore Editorial Team

    We compare specifications, maker information and themes from owner reviews. We do not claim hands-on testing.

    Stowlore Editorial Team

    Stowlore publishes luggage and travel gear guides built from maker specs, price tiers and the themes we see in real owner reviews. Every comparison names who it suits, shows a price tier, and links to the source. We never claim to have tested the gear ourselves.