Cheapest return SEA–YYC flights, May

AirHint found the following cheapest return flights from Seattle (SEA) to Calgary (YYC) in May 2026 (see full year).

Return flights

26 May - 16 Jun Air Canada
27 May - 16 Jun Air Canada
26 May - 16 Jun WestJet direct
27 May - 16 Jun WestJet direct
28 May - 16 Jun WestJet direct
25 May - 27 May Air Canada
28 May - 31 May WestJet direct
29 May - 07 Jun WestJet direct
24 May - 31 May WestJet direct
23 May - 25 May WestJet
23 May - 25 May WestJet direct
21 May - 24 May Harbour Air
21 May - 24 May WestJet direct
25 May - 27 May Delta direct

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

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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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