JetBlue (B6) Baggage Allowance Calculator

For JetBlue flights, your carry-on must measure at most 56×35×23 cm — the sizer at the gate is the arbiter, not the check-in agent. Even without a weight cap, JetBlue uses sizers at the gate — if your bag doesn't fit 56×35×23 cm, it's tagged for the hold.

In addition to the main carry-on, JetBlue allows one personal item under the seat — the usual place for valuables, electronics and medications.

Checked baggage on JetBlue (B6): each bag can weigh up to 23 kg, $35 USD per bag. Extra checked bags on JetBlue price at $90 USD each online; at the counter, expect 40–60% more for the identical bag.

Bulky items like strollers, car seats and wheelchairs travel free in the hold on JetBlue, and overweight charges kick in above 23 kg at $10 USD per additional kilogram.

JetBlue charges $90 USD per additional checked bag beyond the first, and $10 USD per kilogram over the 23 kg limit. The overweight-vs-second-bag decision is arithmetic: at $10/kg and $90 per extra bag, the crossover on JetBlue usually sits 3–6 kg over the 23 kg limit, depending on what the second bag already weighs.

Pre-book additional bags online — airport-side rates on JetBlue are 40–60% higher, and same-day changes at the counter may not be available at all.

Skis, golf clubs and bikes count as ordinary checked bags on JetBlue up to 23 kg; oversize items above 158 cm linear may incur a flat $75–150 surcharge. Musical instruments on JetBlue: small instruments (violin, flute) can travel as carry-on if they fit the sizer; larger ones (cello, guitar) usually require a separate seat or checked handling in a hard case.

Pack fragile and valuable items carefully — JetBlue's liability for damage to improperly packed special items is limited, and hard-shell cases settle most disputes before they start.