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

Return flights

18 Jul - 21 Jul	WestJet	direct
24 Jul - 27 Jul	WestJet	direct
22 Jul - 27 Jul	WestJet	direct
10 Jul - 15 Jul	WestJet
10 Jul - 17 Jul	WestJet
13 Jul - 19 Jul	WestJet	direct
12 Jul - 15 Jul	WestJet	direct
11 Jul - 18 Jul	WestJet	direct
16 Jul - 19 Jul	WestJet	direct
20 Jul - 24 Jul	WestJet
28 Jul - 02 Aug	WestJet

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

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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Cheapest return flights from Seattle to Calgary in July from 157€

Return flights