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

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

• Spirit Airlines: 56x46x25 cm · Non disponible
• JetBlue: 55.88x35.56x22.86 cm · Non disponible

The contrast is structural: Spirit Airlines runs on a low-cost playbook, JetBlue on a more traditional model. That divergence shows up everywhere — fares, on-board service, and naturally on the carry-on grid.

On size, Spirit Airlines wins by a clear margin (56x46x25 cm versus 55.88x35.56x22.86 cm). For a traveller hesitating between the two on a comparable price, that's the deciding argument when the bag is borderline.