SizeFit

Southwest Carry-on Bag Size & Guidelines

Published carry-on: 24 x 16 x 10 in (61 x 41 x 25 cm), including wheels and handles. Personal item: One personal item free, under-seat fit required. Re-check your route and fare before you fly.

Southwest Airlines carry-on bag next to airport size checker with inch limits
Measure wheels and handles—Southwest Airlines enforces outer dimensions at the gate.

Southwest Airlines size check

Southwest Airlines carry-on bag next to an airport size checker

At the gate, bags often go through a sizer bin. Compare your suitcase to the limits on this page before you pack.

  • Carry-on: 24 x 16 x 10 in (61 x 41 x 25 cm)
  • Personal item: One personal item free, under-seat fit required
  • Includes wheels and handles: Yes
  • Last checked: 2026-08-30

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Quick Facts

Southwest Airlines carry-on: 24 x 16 x 10 in (61 x 41 x 25 cm). Personal item: One personal item free, under-seat fit required.

Airline
Southwest Airlines
Carry-on limit (in)
24 x 16 x 10
Carry-on limit (cm)
61 x 41 x 25
Personal item
One personal item free, under-seat fit required
Includes wheels/handles
Yes
Last checked
2026-08-30

Fare snapshot

What you can bring often depends on the ticket—not only the airline name. Re-check Southwest Airlines's baggage page (last checked 2026-08-30).

Fare / productCarry-on / cabin bagPersonal / small bag
Standard / main cabin24 × 16 × 10 inOne personal item, under-seat fit

    Airline-specific notes

    • Travel fees page carries the carry-on dimension statement.
    • Aircraft bin capacity can still cause voluntary or mandatory gate-check.
    • Travel fees page includes carry-on dimension footnote.
    How Airlines Calculate Luggage Size

    Airline baggage limits in inches are based on the outer box dimensions of your bag, not volume.

    • Carry-on rule (most common): single-side limits such as 22 x 14 x 9 in (L x W x H).
    • What must be included: wheels, handles, feet, and any rigid external parts.
    • What is not used as the main rule: liters/cubic volume is usually not the acceptance criterion.
    • Sizer logic at airport: if the bag does not fit the frame, it can be denied or gate-checked.

    Related tools & guides

    Luggage size checkerCarry-on comparison chartHow to measure luggagePersonal item comparison
    Data Sources