Which has the bigger carry-on allowance, JetBlue or Sun Country?

JetBlue: 22 × 14 × 9 in (56 × 36 × 23 cm). Sun Country: 24 × 16 × 11 in (61 × 41 × 28 cm), up to 35 lb (15.9 kg). Sun Country allows the larger bag.

Are JetBlue and Sun Country partners?

They aren't in the same alliance (JetBlue: none; Sun Country: none), so miles and status generally don't transfer between them.

B6 vs SY · 2026 comparison

JetBlue vs Sun Country

Q: Do JetBlue and Sun Country include a carry-on on basic economy?

JetBlue: Main Base (Blue Basic until July 27, 2026) includes a carry-on and a personal item. Checked bags cost extra, and changes cost a fee. Sun Country: Fares include only a personal item. Buying a carry-on early is cheapest.

JetBlue wins on a carry-on on its cheapest fare and a more generous carry-on weight limit; Sun Country wins on a bigger carry-on, a bigger personal item and cheaper checked bags. Here's how they compare on bags, fees, comfort, reliability and loyalty.

Verified Oct 17, 2026By Steven MoHow we check Report a correction

JetBlue

Wins 2 categories

A carry-on on its cheapest fare
A more generous carry-on weight limit

Sun Country

Wins 3 categories

A bigger carry-on
A bigger personal item
Cheaper checked bags

Quick verdict

JetBlue wins on a carry-on on its cheapest fare and a more generous carry-on weight limit; Sun Country wins on a bigger carry-on, a bigger personal item and cheaper checked bags. Check the cheapest fare's bag rules before you compare prices.

Carry-on size: JetBlue: 22 × 14 × 9 in · Sun Country: 24 × 16 × 11 in
Carry-on on the cheapest fare: JetBlue: Included on every fare · Sun Country: Costs extra on basic fares
First checked bag (regular economy): JetBlue: $39–$49 · Sun Country: $34–$45

Side by side

	JetBlue	Sun Country
Bags
Carry-on size	22 × 14 × 9 in	24 × 16 × 11 in
Carry-on on the cheapest fare	Included on every fare	Costs extra on basic fares
Carry-on weight limit	None published	35 lb (15.9 kg)
Personal item	17 × 13 × 8 in	17 × 13 × 9 in
First checked bag (regular economy)	$39–$49	$34–$45
Network
Alliance	None	None
Loyalty program	TrueBlue	Sun Country Rewards
Main hubs	JFK, BOS, FLL, MCO, SJU	MSP

Highlighted values are better for travelers. Fees are for U.S. domestic economy flights; on-time data is 2025 U.S. DOT figures for each airline's own flights.

Bags and fees

JetBlue allows a carry-on up to 22 × 14 × 9 in (56 × 36 × 23 cm), and Sun Country up to 24 × 16 × 11 in (61 × 41 × 28 cm), so Sun Country's is roomier.

JetBlue includes it on every fare, while Sun Country charges for it on its cheapest fare.

Sun Country caps carry-ons at 35 lb (15.9 kg); JetBlue publishes no limit.

Personal items: 17 × 13 × 8 in (43 × 33 × 20 cm) on JetBlue, and 17 × 13 × 9 in (43 × 33 × 23 cm) on Sun Country.

A first checked bag on JetBlue costs $39–$49 on U.S., Caribbean, Latin America and Canada flights, and a first checked bag on Sun Country costs $34–$45 on all Sun Country flights.

Basic economy

JetBlue (Main Base): Main Base (Blue Basic until July 27, 2026) includes a carry-on and a personal item. Checked bags cost extra, and changes cost a fee.

Sun Country (Best fare): Fares include only a personal item. Buying a carry-on early is cheapest.

Loyalty and where they fly

JetBlue is not in an alliance and Sun Country is not in an alliance.

Loyalty programs: TrueBlue (JetBlue) and Sun Country Rewards (Sun Country).

JetBlue's main hubs are New York (JFK), Boston (BOS), Fort Lauderdale (FLL), Orlando (MCO), San Juan (SJU). Sun Country's are Minneapolis (MSP). The best choice often comes down to which airline flies nonstop from your airport.

Which should you book?

Choose JetBlue if you want…

a carry-on on its cheapest fare
a more generous carry-on weight limit
nonstops from JFK, BOS, FLL

Choose Sun Country if you want…

a bigger carry-on
a bigger personal item
cheaper checked bags
nonstops from MSP

On a route both fly, the cheaper ticket isn't always the cheaper trip: add the bags you'll actually bring, and check the fare rules before you book.