Does the Horizn Studios H5 Cabin Luggage fit Southwest Airlines' carry-on?

Yes, just. Fits with 0.6 cm to spare on the tightest side. It's too big for Southwest Airlines' personal item (13.7 cm too long).

Tight fit

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Side the bag fails onPart that sticks outSizer frame

Tight fit

Fits with 0.6 cm to spare on the tightest side.

BagHorizn Studios H5 Cabin Luggage

Cabin bagSouthwest Airlines

Length: 55of 61 cm6 cm spare
Width: 40of 40.6 cm0.6 cm spare
Depth: 20of 25.4 cm5.4 cm spare

WeightNo published limit on Southwest Airlines

Packed weightkg

Gate staff can still refuse a bag you can't lift into the bin yourself.

What you can do

Pack it before you measure. A full pocket can add 3 to 5 cm.

See bags that fit Southwest Airlines

Southwest Airlines rules checked 2 Nov 2026. Airline's page. Sizes include wheels and handles.

Side by side

Horizn Studios H5 Cabin Luggage against Southwest Airlines' limits. Bags can be turned, so the longest side is compared with the longest limit.

Carry-on: 61 × 40.6 × 25.4 cm
Side	Bag	Limit	Result
Length	55 cm	61 cm	6 cm spare
Width	40 cm	40.6 cm	0.6 cm spare
Depth	20 cm	25.4 cm	5.4 cm spare

Personal item: 41.3 × 34.3 × 20.3 cm
Side	Bag	Limit	Result
Length	55 cm	41.3 cm	13.7 cm over
Width	40 cm	34.3 cm	5.7 cm over
Depth	20 cm	20.3 cm	0.3 cm spare

Southwest Airlines rules worth knowing

Carry-on: 24 × 16 × 10 in, bigger than most US airlines allow.
Personal item: 16.25 × 13.5 × 8 in.
A bag packed to Southwest's limit may not fit a connecting Delta or United flight.

Bags that fit Southwest Airlines' carry-on

Biggest first.

Samsonite Freeform Carry-On Spinner58.4 × 38.1 × 24.8 cmTight0.6 cm to spareBag page
Away Bigger Carry-On57.7 × 39.1 × 24.4 cmTight1 cm to spareBag page
Rimowa Essential Cabin55 × 39 × 23 cmFits1.6 cm to spareBag page
Travelpro Maxlite 5 21" Expandable Spinner58.4 × 36.8 × 22.9 cmFits2.5 cm to spareBag page

Good to know

Will the Horizn Studios H5 Cabin Luggage still fit Southwest Airlines when it's packed?

Only just. Keep the front pockets flat and the expansion zip closed, and measure it packed before you leave.

What is Southwest Airlines' carry-on size limit?

Southwest Airlines' carry-on limit is 61 × 40.6 × 25.4 cm, with no published weight limit.

Which other bags fit Southwest Airlines?

Rimowa Essential Cabin and Travelpro Maxlite 5 21" Expandable Spinner fit with room to spare. Samsonite Freeform Carry-On Spinner and Away Bigger Carry-On are right on the limit.