Cheapest one-way flights from Seattle to Calgary in September from $38

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

One-Way flights

27 Sep Alaska Airlines direct
16 Sep WestJet direct
18 Sep WestJet direct
13 Sep WestJet direct
23 Sep WestJet direct
15 Sep WestJet direct
09 Sep WestJet direct
11 Sep WestJet direct
24 Sep WestJet direct
26 Sep WestJet

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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