JetBlue vs Southwest Airlines: fleets and facts compared

JetBlue's help pages list the following limits. Sizes and weights only; checked-bag charges depend on fare and route.

• Carry-on bag: one per customer on all fares, up to 22 x 14 x 9 inches (55.88 x 35.56 x 22.86 cm) including wheels and handles. It can go in the overhead bin or under the seat. There is no weight limit, but you must be able to lift it into the bin.
• Personal item: one per customer, such as a purse, small backpack, briefcase or laptop, up to 17 x 13 x 8 inches (43.2 x 33 x 20.32 cm), stowed under the seat in front.
• Not counted towards the carry-on limit: assistive devices, a reasonable amount of duty-free goods, one diaper bag for a lap infant, and items such as a coat, umbrella or infant car seat.
• Checked bags: up to 62 inches (157.48 cm) in total dimensions and 50 lb (22.68 kg). Bags of 63 to 80 inches, or 51 to 99 lb, are treated as oversized or overweight. Bags over 80 inches or 99 lb are not accepted. Some destinations, such as Ecuador, have their own limits.

There are no hanging closets for garment bags on board. Source: JetBlue Help, "Carry-On Bags" and "Checked Bags", read on 24 October 2026.

Source: airline baggage page, read 2026-10-24.

Southwest's help centre sets out these limits. Sizes and weights only; since 28 May 2025 checked bags are charged on most fares, so check what your fare includes.

• Carry-on bag: one bag of up to 24 x 16 x 10 inches (length x width x height), including wheels, handles and attachments. It goes in the overhead bin.
• Personal item: one item that fits under the seat in front, such as a purse, briefcase, laptop case or backpack. Southwest gives examples but publishes no dimensions for it. A pet carrier counts as either the carry-on or the personal item.
• Checked bags: standard limit of 62 inches (length + width + height, wheels and handles included) and up to 50 pounds per bag. Bags over these limits attract extra charges.
• Some countries are subject to baggage embargoes that restrict oversized, overweight and extra checked bags, and partner itineraries may follow the partner airline's rules.

Bags too large for the cabin, or a second carry-on or personal item, must be checked at the ticket counter before the gate. Source: Southwest Help Center, "Carryon and Personal Item Policy" and "Checked Bag Policy", read on 24 October 2026.

Source: airline baggage page, read 2026-10-24.