Southwest Airlines vs Spirit Airlines — carry-on baggage compared | CabinPax

Carry-on rules side by side: maximum dimensions, weight allowance, personal item. Data updated April 2026.

• Southwest Airlines: 61x41x25 cm · Non disponible
• Spirit Airlines: 56x46x25 cm · Non disponible

On paper, Spirit Airlines and Southwest Airlines don't compete on the same field. The first plays the budget card with all that implies for ancillary fees; the second leans on a full-service heritage with a more accommodating baggage stance.