AirHint found the following cheapest return flights from San Jose (SJC) to Calgary (YYC) in August 2025 (see full year).

Return flights

11 Aug - 12 Aug	Alaska Airlines
08 Aug - 14 Aug	Spirit Airlines
09 Aug - 14 Aug	Alaska Airlines
07 Aug - 11 Aug	WestJet
06 Aug - 11 Aug	WestJet
23 Aug - 26 Aug	WestJet
17 Aug - 24 Aug	WestJet
27 Aug - 01 Sep	WestJet
11 Aug - 18 Aug	WestJet
01 Aug - 04 Aug	Alaska Airlines
14 Aug - 18 Aug	WestJet
29 Aug - 02 Sep	WestJet
28 Aug - 01 Sep	WestJet

Also check the deals for one-way flights from San Jose to Calgary in August.

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 San Jose to Calgary in August from $307

Return flights