What Size Bag
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JetBlue bag size and carry-on rules

JetBlue allows a personal item of 17 x 13 x 8 in (43.2 x 33 x 20.32 cm) and a carry-on of 22 x 14 x 9 in (55.88 x 35.56 x 22.86 cm) on every fare, including Main Base. JetBlue has no weight limit for carry-on bags.

Bag type

Your bag against JetBlue’s limits

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Main Base still has the carry-on

JetBlue’s lowest fare, Main Base, includes a carry-on for the overhead bin, space permitting, and a personal item for under the seat. None of the Main fares (Main Base, Main or Main Flex) includes a checked bag within the U.S.; the BlueFirst and Mint fares do.

Checked bags: peak dates cost more

On Main Base, Main and Main Flex, every checked bag within the U.S., Latin America, the Caribbean and Canada costs a fee. It’s higher on peak dates, which take in Thanksgiving, the winter holidays and the busy spring and summer weeks; JetBlue lists them on its checked bags page.

Adding a bag at least 24 hours before departure costs less than adding it later. You can add up to two bags when you book. A third can only be bought at the airport.

Overweight and oversize

On transatlantic flights, Main, Main Flex, EvenMore and EvenMore Flex fares include the first checked bag. Main Base doesn’t.

Bag prices

For today’s bag fees, see JetBlue’s baggage page.

Common questions

What size is a JetBlue personal item in centimeters?

JetBlue gives its personal item limit as 43.2 x 33 x 20.32 cm, the same as its 17 x 13 x 8 inches.

Is a backpack a personal item on JetBlue?

Yes, JetBlue lists a small backpack as a personal item, within 17 x 13 x 8 inches and under the seat in front of you.

Where we get our information from

Every limit on this page comes from JetBlue’s own baggage pages, read in October 2026. Checked against published data from JetBlue.

See all 3 sources
  • JetBlue, Carry-On Bags (jetblue.com)
  • JetBlue, Checked Bags (jetblue.com)
  • JetBlue, Fare Options (jetblue.com)

General guidance from airline, TSA and FAA rules, checked on the date shown. Rules change, and the airline and security officers decide on the day: check your airline before you fly.