Cheapest return flights from Seattle to Calgary in October from $184

AirHint found the following cheapest return flights from Seattle (SEA) to Calgary (YYC) in October 2025 (see full year).

Return flights

03 Oct - 04 Oct WestJet
03 Oct - 05 Oct WestJet
04 Oct - 09 Oct WestJet
03 Oct - 05 Oct Alaska Airlines direct
03 Oct - 04 Oct WestJet direct
05 Oct - 09 Oct WestJet direct
04 Oct - 09 Oct WestJet direct
08 Oct - 11 Oct WestJet direct
04 Oct - 12 Oct WestJet direct
07 Oct - 10 Oct WestJet

Also check the deals for one-way flights from Seattle to Calgary in October.

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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