Cheapest one-way flights from Seattle to Calgary in September from $72

AirHint found the following cheapest one-way flights from Seattle (SEA) to Calgary (YYC) in September 2025 (see full year).

One-Way flights

07 Sep Alaska Airlines direct
28 Sep Alaska Airlines direct
15 Sep WestJet direct
22 Sep WestJet direct
12 Sep WestJet direct
03 Sep WestJet
30 Sep WestJet
06 Sep WestJet
08 Sep WestJet
30 Sep WestJet direct

Also check the deals for return flights from Seattle to Calgary in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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