Which has the bigger carry-on allowance, Avelo or Southwest?

Avelo: 22 × 14 × 9 in (56 × 36 × 23 cm). Southwest: 24 × 16 × 10 in (61 × 41 × 25 cm). Southwest allows the larger bag.

Are Avelo and Southwest partners?

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

XP vs WN · 2026 comparison

Avelo vs Southwest

Q: Do Avelo and Southwest include a carry-on on basic economy?

Avelo: Fares include only a personal item; carry-ons are a paid add-on. Southwest: Even the Basic fare includes a carry-on and a personal item. Checked bags cost extra on Basic, Choice and Choice Preferred fares.

Q: Where do Avelo and Southwest fly from?

Avelo flies point-to-point. Southwest's are Denver (DEN), Las Vegas (LAS), Chicago (MDW), Baltimore (BWI), Dallas (DAL). The better pick is often whichever flies nonstop from your airport.

Avelo wins on a bigger personal item and cheaper checked bags; Southwest wins on a bigger carry-on and a carry-on on its cheapest fare. Here's how they compare on bags, fees, comfort, reliability and loyalty.

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

Avelo

Wins 2 categories

A bigger personal item
Cheaper checked bags

Southwest

Wins 2 categories

A bigger carry-on
A carry-on on its cheapest fare

Quick verdict

Avelo wins on a bigger personal item and cheaper checked bags; Southwest wins on a bigger carry-on and a carry-on on its cheapest fare. Check the cheapest fare's bag rules before you compare prices.

Carry-on size: Avelo: 22 × 14 × 9 in · Southwest: 24 × 16 × 10 in
Carry-on on the cheapest fare: Avelo: Costs extra on basic fares · Southwest: Included on every fare
First checked bag (regular economy): Avelo: $40–$45 · Southwest: $45

Side by side

	Avelo	Southwest
Bags
Carry-on size	22 × 14 × 9 in	24 × 16 × 10 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	17 × 13 × 9 in	16.25 × 13.5 × 8 in
First checked bag (regular economy)	$40–$45	$45
Network
Alliance	None	None
Loyalty program	None	Rapid Rewards
Main hubs	Point-to-point	DEN, LAS, MDW, BWI, DAL

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

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

Avelo charges for it on its cheapest fare, while Southwest includes it on every fare.

Neither publishes a carry-on weight limit.

Personal items: 17 × 13 × 9 in (43 × 33 × 23 cm) on Avelo, and 16.25 × 13.5 × 8 in (41 × 34 × 20 cm) on Southwest.

A first checked bag on Avelo costs $40–$45 on all Avelo flights, and a first checked bag on Southwest costs $45 on flights within the U.S. mainland.

Basic economy

Avelo (Base fare): Fares include only a personal item; carry-ons are a paid add-on.

Southwest (Basic): Even the Basic fare includes a carry-on and a personal item. Checked bags cost extra on Basic, Choice and Choice Preferred fares.

Loyalty and where they fly

Avelo is not in an alliance and Southwest is not in an alliance.

Loyalty programs: none (Avelo) and Rapid Rewards (Southwest).

Avelo flies point-to-point without big hubs. Southwest's are Denver (DEN), Las Vegas (LAS), Chicago (MDW), Baltimore (BWI), Dallas (DAL). The best choice often comes down to which airline flies nonstop from your airport.

Which should you book?

Choose Avelo if you want…

a bigger personal item
cheaper checked bags

Choose Southwest if you want…

a bigger carry-on
a carry-on on its cheapest fare
nonstops from DEN, LAS, MDW

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.