Yes, Southwest carry-ons are still free: you get one carryon bag plus one personal item, as long as they fit the size limits.
Airlines keep tweaking what “free” means, and Southwest has made real baggage changes. You can still bring a carryon and a personal item without a carry-on fee.
The catch is the same one that trips people up at the gate: size. If your bag is too big to count as a carryon, you can end up checking it, sometimes at the last minute. This guide lays out the current rules, the size numbers that matter, and the small habits that keep your bag on the plane with you.
This is the quick check that saves time at the gate.
What “Free Carry-Ons” Means On Southwest Right Now
Southwest’s carry-on allowance is straightforward. Every ticketed passenger may bring:
- One carryon bag that goes in the overhead bin
- One personal item that fits under the seat in front of you
Southwest lists the carryon size limit as 24 x 16 x 10 inches, counting wheels and handles in the measurement. That single line is the rule most worth measuring at home, since a “close enough” suitcase can turn into a gate problem on a full flight. The current size figure appears on Southwest’s own carryon baggage policy page.
“Free” here means no separate carry-on charge. It does not mean you can bring three bags, or a carryon that’s closer to a checked suitcase. It also does not mean your carryon is guaranteed an overhead-bin spot if you board late. You still need a bag that meets the size rules and a plan for boarding order.
| Item you bring | Counts as | What you pay |
|---|---|---|
| Roller suitcase within 24 x 16 x 10 in | Carryon bag | $0 carry-on fee |
| Tote, purse, small backpack under the seat | Personal item | $0 |
| Two backpacks that both need the overhead bin | Over the limit | One must be checked |
| Camera bag plus small backpack | Two items | One must be checked |
| In-cabin pet carrier | Carryon or personal item | $0 carry-on fee, pet fare may apply |
| Stroller and car seat for a child | Child gear | $0 to gate-check |
| Medical device bag (CPAP, etc.) | Special item | $0, does not replace your 1+1 |
| Oversize carryon that fails the sizer | Checked at gate | May trigger a checked-bag charge |
Are Carry-Ons Still Free on Southwest?
Yes. Southwest still lets you carry on one bag and bring one personal item without a carry-on fee. You can confirm the wording on Southwest’s Optional Travel Charges page, which states that one carryon plus one personal-type item are allowed for free.
What has changed is the wider baggage story. Southwest used to stand out for free checked bags, and that perk has been reduced for many travelers. News outlets reported that Southwest introduced checked-bag fees, with exceptions tied to fare type and loyalty status. That shift can make the carry-on rules feel shaky, even when the carry-on part has stayed steady.
Carry On Bags On Southwest Flights With A Fee Reality Check
If you want to avoid surprise costs, treat your carryon plan and your checked-bag plan as two separate things. Carryons are free. Checked bags may cost money, depending on what you bought and what status or card perks you have.
This matters in a sneaky way. When overhead bins fill up, gate agents may ask for volunteers to check bags. If you already planned to check, that’s fine. If you counted on staying carry-on only, that moment can feel stressful, since a checked-bag charge can apply once a bag is tagged and sent below.
Why people think the carry-on rule changed
Most confusion comes from three places:
- Checked-bag fees make people assume carry-ons now cost money too.
- Gate enforcement feels stricter when flights are full, even if the written rule is the same.
Southwest’s printed policy still reads like the old days for carryons: one carryon and one personal item, no carry-on fee, with the published size limit.
The Size Rules That Keep Your Bag Out Of Trouble
Southwest uses external dimensions, so wheels and handles count. The limit is 24 x 16 x 10 inches. When buying luggage, look for outer size.
Personal item sizing in real life
Southwest’s policy describes the personal item as a smaller, personal-type item that can be stowed under a seat or in an overhead compartment. In practice, the under-seat fit is what saves you when bins fill up. A slim backpack, purse, or laptop bag that slides fully under the seat is the safest play.
Quick at-home measuring method
You don’t need a fancy tape routine. Try this:
- Stand the bag upright, wheels down.
- Measure the tallest point, including wheels.
- Measure the widest point across the front.
- Measure depth from front panel to back panel.
If you’re right on the edge, pack lighter and zip it flat. Soft bags can squeeze into a sizer when they’re not overstuffed.
Boarding, Overhead Bins, And What “Gate Check” Really Means
Southwest boarding order still shapes your carry-on experience. When you board early, overhead-bin space is easy. When you board late, bins can be full, and your overhead-bin bag can become a gate-check candidate even if it meets the size rule.
Two common gate-check paths
Not all gate checks are the same. Here’s the difference travelers feel:
- Valet or plane-side check: You hand over the bag at the jet bridge and pick it up at the jet bridge after landing.
- Checked to baggage claim: The bag goes to the carousel, like a standard checked suitcase.
Which one you get depends on the airport, the flight, and staffing. If you have meds, keys, passports, lithium battery packs, or fragile gear, keep those in your personal item so you don’t lose access if your carryon is taken.
What Counts As A Carryon, What Counts As A Personal Item
The easiest way to think about it is “where it fits.” A carryon is the bag meant for the overhead bin. A personal item is the smaller bag meant for the space under the seat. Southwest gives you one of each.
Items that often confuse people
These are the usual gray areas at the gate:
- Big tote bags that end up in the overhead bin
- Thick backpacks that do not slide under a seat when full
- Shopping bags from the terminal
- Neck pillows stuffed with clothes
If it looks like a second carryon, staff may treat it that way. A simple rule keeps you safe: if your “personal item” won’t fit under the seat once you’re seated, you’re pushing your luck.
When You Might Still Pay Even If Carryons Are Free
Most travelers pay $0 for carryons on Southwest. The times money enters the picture are tied to checking bags, not carrying them on. Here are the scenarios that trigger charges most often:
- Your carryon is oversize and must be checked
- You bring more than the 1 carryon + 1 personal item limit
- You choose to check bags for comfort or time
How To Pack So Your Carryon Stays A Carryon
Small choices in packing stop most gate hassles. These tips work on crowded flights and short hops alike:
- Pick one “bin bag.” Use a suitcase that you know is under 24 x 16 x 10 inches.
- Keep one “seat bag.” Make your personal item a backpack or tote that stays slim.
- Move heavy stuff to the seat bag. A lighter suitcase is easier to lift and less likely to bulge.
- Skip clip-on extras. A strapped jacket or dangling shoes add bulk and catch attention.
Are Carry-Ons Still Free on Southwest? What to check before you fly
Before you leave for the airport, run a fast check so you’re not guessing at the curb:
- Measure your carryon’s outer size, wheels included.
- Make sure your personal item fits under a seat when fully packed.
- Put lithium batteries and power banks in your personal item.
- Keep travel documents in a pocket you can reach with the bag under the seat.
- If you might check a bag, review your fare and any loyalty or card perks.
This takes five minutes at home and can save you time at the gate.
| Gate scenario | What usually happens | How to stay calm |
|---|---|---|
| Bins fill before you board | Agents ask for volunteers to check carryons | Keep meds, chargers, IDs in the seat bag |
| Your bag fails the sizer | Bag is tagged and checked | Remove a packing cube, zip it flat, try again |
| You have three items | One item must be checked | Combine small bags inside the suitcase |
| Short connection, tight time | Checked bag adds baggage-claim time | Stay carry-on only when you can |
| Full flight, small overhead bins | Some rollers get checked even if legal size | Choose a soft duffel, pack it slim |
| Fragile gear in your suitcase | Gate check raises break risk | Shift fragile items to the seat bag |
| Last row seat, under-seat space tight | Personal item may not fit well | Use a thinner backpack, keep it squishable |
A Simple Way To Decide: Carry On Only Or Check A Bag
For short trips, carry-on only is often the smoothest option. For bulky gear or liquids, checking a bag can be worth it.
Either way, Southwest’s carry-on rule stays simple: one carryon, one personal item, no carry-on fee, with a clear size limit. Measure once and pack to fit.