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

Frontier: 24 × 16 × 10 in (61 × 41 × 25 cm), up to 35 lb (15.9 kg). JetBlue: 22 × 14 × 9 in (56 × 36 × 23 cm). Frontier allows the larger bag.

Do Frontier and JetBlue include a carry-on on basic economy?

Frontier: The Basic fare includes only a personal item. Add a carry-on when you book; it costs the most at the gate. 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.

Which is more reliable, Frontier or JetBlue?

In 2025 Frontier arrived on time 70.7% of the time (1.8% cancelled) and JetBlue 72.3% (1.7% cancelled), according to U.S. DOT data.

Which has more legroom, Frontier or JetBlue?

Standard economy legroom is about 28 in on Frontier and about 32 in on JetBlue. Both sell extra-legroom seats.

Which cancels fewer flights, Frontier or JetBlue?

In 2025 Frontier cancelled 1.8% of its flights and JetBlue 1.7%, close to a tie (U.S. DOT data).

Are Frontier and JetBlue partners?

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

F9 vs B6 · 2026 comparison

Frontier vs JetBlue

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

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

Frontier

Wins 3 categories

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

JetBlue

Wins 4 categories

A carry-on on its cheapest fare
A more generous carry-on weight limit
More legroom
A better on-time record

Quick verdict

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

Carry-on size: Frontier: 24 × 16 × 10 in · JetBlue: 22 × 14 × 9 in
Carry-on on the cheapest fare: Frontier: Costs extra on basic fares · JetBlue: Included on every fare
First checked bag (regular economy): Frontier: $29–$63 · JetBlue: $39–$49
Standard economy legroom: Frontier: About 28 in · JetBlue: About 32 in
On-time arrivals (2025): Frontier: 70.7% · JetBlue: 72.3%

Side by side

	Frontier	JetBlue
Bags
Carry-on size	24 × 16 × 10 in	22 × 14 × 9 in
Carry-on on the cheapest fare	Costs extra on basic fares	Included on every fare
Carry-on weight limit	35 lb (15.9 kg)	None published
Personal item	18 × 14 × 8 in	17 × 13 × 8 in
First checked bag (regular economy)	$29–$63	$39–$49
Comfort
Standard economy legroom	About 28 in	About 32 in
Reliability
On-time arrivals (2025)	70.7%	72.3%
Flights cancelled (2025)	1.8%	1.7%
Network
Alliance	None	None
Loyalty program	FRONTIER Miles	TrueBlue
Main hubs	DEN	JFK, BOS, FLL, MCO, SJU

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

Frontier allows a carry-on up to 24 × 16 × 10 in (61 × 41 × 25 cm), and JetBlue up to 22 × 14 × 9 in (56 × 36 × 23 cm), so Frontier's is roomier.

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

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

Personal items: 18 × 14 × 8 in (46 × 36 × 20 cm) on Frontier, and 17 × 13 × 8 in (43 × 33 × 20 cm) on JetBlue.

A first checked bag on Frontier costs $29–$63 on all Frontier flights, and a first checked bag on JetBlue costs $39–$49 on U.S., Caribbean, Latin America and Canada flights.

Basic economy

Frontier (Basic): The Basic fare includes only a personal item. Add a carry-on when you book; it costs the most at the gate.

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.

Seats and Wi-Fi

Frontier gives about 28 in of legroom in standard economy and JetBlue about 32 in, an edge for JetBlue. Frontier: About 28–29 in. JetBlue: About 32 in in Core, the most of the big U.S. airlines.

On-time performance

In 2025, Frontier landed 70.7% of its flights on time and cancelled 1.8%; JetBlue landed 72.3% on time and cancelled 1.7%. That makes JetBlue the more punctual of the two. The figures come from the U.S. DOT and count each airline's own flights, not regional partners.

Loyalty and where they fly

Frontier is not in an alliance and JetBlue is not in an alliance.

Loyalty programs: FRONTIER Miles (Frontier) and TrueBlue (JetBlue).

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

Which should you book?

Choose Frontier if you want…

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

Choose JetBlue if you want…

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

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.