Which has the bigger carry-on allowance, Air Transat or WestJet?

Air Transat: 55 × 40 × 23 cm (21.7 × 15.7 × 9.1 in). WestJet: 53 × 38 × 23 cm (20.9 × 15 × 9.1 in). Air Transat allows the larger bag.

Are Air Transat and WestJet partners?

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

TS vs WS · 2026 comparison

Air Transat vs WestJet

Q: Do Air Transat and WestJet include a carry-on on basic economy?

Air Transat: Eco Budget on flights to the South, the U.S. and within Canada includes only a personal item; Eco Standard adds a carry-on. Check your fare on transatlantic flights. WestJet: UltraBasic fares include only a personal item on most routes.

Air Transat wins on a bigger carry-on; WestJet wins on a bigger personal item. Here's how they compare on bags, fees, comfort, reliability and loyalty.

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

Air Transat

Wins 1 category

A bigger carry-on

WestJet

Wins 1 category

A bigger personal item

Quick verdict

Air Transat wins on a bigger carry-on; WestJet wins on a bigger personal item. Check the cheapest fare's bag rules before you compare prices.

Carry-on size: Air Transat: 55 × 40 × 23 cm · WestJet: 53 × 38 × 23 cm
Carry-on on the cheapest fare: Air Transat: Not on some basic fares · WestJet: Not on some basic fares

Side by side

	Air Transat	WestJet
Bags
Carry-on size	55 × 40 × 23 cm	53 × 38 × 23 cm
Carry-on on the cheapest fare	Not on some basic fares	Not on some basic fares
Carry-on weight limit	None published	None published
Personal item	43 × 31 × 13 cm	41 × 33 × 15 cm
Network
Alliance	None	None
Loyalty program	None	WestJet Rewards
Main hubs	YUL, YYZ	YYC, YYZ, YVR

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

Air Transat allows a carry-on up to 55 × 40 × 23 cm (21.7 × 15.7 × 9.1 in), and WestJet up to 53 × 38 × 23 cm (20.9 × 15 × 9.1 in), so Air Transat's is roomier.

Air Transat's Eco Budget can be personal-item only, while WestJet's UltraBasic can be personal-item only.

Neither publishes a carry-on weight limit.

Personal items: 43 × 31 × 13 cm (16.9 × 12.2 × 5.1 in) on Air Transat, and 41 × 33 × 15 cm (16.1 × 13 × 5.9 in) on WestJet.

Basic economy

Air Transat (Eco Budget): Eco Budget on flights to the South, the U.S. and within Canada includes only a personal item; Eco Standard adds a carry-on. Check your fare on transatlantic flights.

WestJet (UltraBasic): UltraBasic fares include only a personal item on most routes.

Loyalty and where they fly

Air Transat is not in an alliance and WestJet is not in an alliance.

Loyalty programs: none (Air Transat) and WestJet Rewards (WestJet).

Air Transat's main hubs are Montreal (YUL), Toronto (YYZ). WestJet's are Calgary (YYC), Toronto (YYZ), Vancouver (YVR). The best choice often comes down to which airline flies nonstop from your airport.

Which should you book?

Choose Air Transat if you want…

a bigger carry-on
nonstops from YUL, YYZ

Choose WestJet if you want…

a bigger personal item
nonstops from YYC, YYZ, YVR

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.