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Spirit Airlines vs Southwest Airlines

Cabin and carry-on baggage limits for Spirit Airlines and Southwest Airlines, side by side.

⚠ These figures are awaiting manual verification against the airline's official page. Treat them as preliminary.

Southwest Airlines allows the larger carry-on — its longest side is 61 cm, versus 56 cm for Spirit Airlines.

Spirit Airlines is more generous for personal items — up to 46 cm, versus 41 cm on Southwest Airlines.

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Spirit Airlines NK
Max dimensions
56 × 46 × 25 cm
Total linear
Not published
Weight limit
Not published
Pieces
1
Southwest Airlines WN More room
Max dimensions
61 × 41 × 25 cm
Total linear
Not published
Weight limit
Not published
Pieces
1

Cabin & carry-on allowances

Allowance Spirit Airlines Southwest Airlines
Carry-on Fare: Value Not directly comparable: the two rows apply under different conditions. 56 × 46 × 25 cm · Not published · Not published · 1 pc Carry-on max 22 x 18 x 10 in (56 x 46 x 25 cm); no published weight limit. Not included on the Value fare; must be purchased Carry-on up to 56 x 46 x 25 cm, no published weight limit; not included on the Value fare and must be purchased. Not on record
Fare: Go Big, Go Comfy, Go Savvy, Premium, Spirit First Not directly comparable: the two rows apply under different conditions. 56 × 46 × 25 cm · Not published · Not published · 1 pc Carry-on max 22 x 18 x 10 in (56 x 46 x 25 cm) on higher fare bundles; no published weight limit. Carry-on up to 56 x 46 x 25 cm included on higher fare bundles (Go Big/Go Comfy/Go Savvy/Premium/Spirit First); no published weight limit. Not on record
Not directly comparable: the two rows apply under different conditions. Not on record 61 × 41 × 25 cm · Not published · Not published · 1 pc Free on all fares No published weight limit Carry-on up to 61x41x25 cm (24x16x10 in); free on all fares, no weight limit published.
Personal item 46 × 36 × 20 cm · Not published · Not published · 1 pc Personal item max 18 x 14 x 8 in (46 x 36 x 20 cm); no published weight limit; free on all fares. Free on all fares Personal item up to 46 x 36 x 20 cm, free on all fares, no published weight limit. 41 × 34 × 20 cm · Not published · Not published · 1 pc Free on all fares No published weight limit Personal item up to 41x34x20 cm (16.25x13.5x8 in); free on all fares.

Sources

Spirit Airlines

Baggage - Spirit Airlines
Official · unverified Last checked: 2026-10-11

Southwest Airlines

Carry-On Baggage - Southwest Airlines
Official · unverified Last checked: 2026-10-11