Which has the bigger carry-on allowance, Allegiant or Delta?

Allegiant: 22 × 16 × 10 in (56 × 41 × 25 cm). Delta: 22 × 14 × 9 in (56 × 36 × 23 cm). Allegiant allows the larger bag.

Do Allegiant and Delta include a carry-on on basic economy?

Allegiant: Fares include only a personal item. A carry-on is a paid add-on, cheapest at booking. Delta: Main Basic (formerly Basic Economy) includes a carry-on and a personal item on U.S. flights. Checked bags cost extra.

Which is more reliable, Allegiant or Delta?

In 2025 Allegiant arrived on time 74.5% of the time (0.5% cancelled) and Delta 79.1% (1.1% cancelled), according to U.S. DOT data.

Which cancels fewer flights, Allegiant or Delta?

In 2025 Allegiant cancelled 0.5% of its flights and Delta 1.1%, so Allegiant had the edge (U.S. DOT data).

Are Allegiant and Delta partners?

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

G4 vs DL · 2026 comparison

Allegiant vs Delta

Allegiant wins on a bigger carry-on, cheaper checked bags and fewer cancellations; Delta wins on a carry-on on its cheapest fare 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

Allegiant

Wins 3 categories

A bigger carry-on
Cheaper checked bags
Fewer cancellations

Delta

Wins 2 categories

A carry-on on its cheapest fare
A better on-time record

Quick verdict

Allegiant wins on a bigger carry-on, cheaper checked bags and fewer cancellations; Delta wins on a carry-on on its cheapest fare and a better on-time record. Check the cheapest fare's bag rules before you compare prices.

Carry-on size: Allegiant: 22 × 16 × 10 in · Delta: 22 × 14 × 9 in
Carry-on on the cheapest fare: Allegiant: Costs extra on basic fares · Delta: Included on every fare
First checked bag (regular economy): Allegiant: $20–$50 · Delta: $45
On-time arrivals (2025): Allegiant: 74.5% · Delta: 79.1%

Side by side

	Allegiant	Delta
Bags
Carry-on size	22 × 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	None published	None published
Personal item	7 × 15 × 16 in	Must fit under the seat
First checked bag (regular economy)	$20–$50	$45
Reliability
On-time arrivals (2025)	74.5%	79.1%
Flights cancelled (2025)	0.5%	1.1%
Network
Alliance	None	SkyTeam
Loyalty program	Allways Rewards	SkyMiles
Main hubs	LAS, SFB, PIE, AZA	ATL, DTW, MSP, SLC, JFK

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

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

Allegiant charges for it on its cheapest fare, while Delta includes it on every fare.

Neither publishes a carry-on weight limit.

Personal items: 7 × 15 × 16 in (18 × 38 × 41 cm) on Allegiant, and anything that fits under the seat on Delta.

A first checked bag on Allegiant costs $20–$50 on all Allegiant flights, and a first checked bag on Delta costs $45 on U.S. and short-haul international flights.

Basic economy

Allegiant (Base fare): Fares include only a personal item. A carry-on is a paid add-on, cheapest at booking.

Delta (Delta Main Basic): Main Basic (formerly Basic Economy) includes a carry-on and a personal item on U.S. flights. Checked bags cost extra.

On-time performance

In 2025, Allegiant landed 74.5% of its flights on time and cancelled 0.5%; Delta landed 79.1% on time and cancelled 1.1%. That makes Delta 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

Allegiant is not in an alliance and Delta is in SkyTeam.

Loyalty programs: Allways Rewards (Allegiant) and SkyMiles (Delta).

Allegiant's main hubs are Las Vegas (LAS), Orlando Sanford (SFB), St. Petersburg–Clearwater (PIE), Phoenix–Mesa (AZA). Delta's are Atlanta (ATL), Detroit (DTW), Minneapolis (MSP), Salt Lake City (SLC), New York (JFK). The best choice often comes down to which airline flies nonstop from your airport.

Which should you book?

Choose Allegiant if you want…

a bigger carry-on
cheaper checked bags
fewer cancellations
nonstops from LAS, SFB, PIE

Choose Delta if you want…

a carry-on on its cheapest fare
a better on-time record
to earn and use SkyTeam miles and status
nonstops from ATL, DTW, 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.