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

Return flights

25 Jul - 28 Jul	WestJet
04 Jul - 07 Jul	WestJet	direct
25 Jul - 28 Jul	WestJet	direct
25 Jul - 27 Jul	WestJet
04 Jul - 06 Jul	WestJet
04 Jul - 06 Jul	WestJet	direct
25 Jul - 27 Jul	WestJet	direct
01 Jul - 20 Jul	Flair Airlines
29 Jul - 04 Aug	WestJet
28 Jul - 01 Aug	WestJet
23 Jul - 27 Jul	WestJet
10 Jul - 13 Jul	WestJet
31 Jul - 04 Aug	WestJet
30 Jul - 06 Aug	WestJet
30 Jul - 04 Aug	WestJet
26 Jul - 02 Aug	WestJet
31 Jul - 10 Aug	WestJet
31 Jul - 02 Aug	WestJet
30 Jul - 04 Aug	WestJet	direct
30 Jul - 06 Aug	WestJet	direct

Also check the deals for one-way flights from Calgary to San Francisco 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 Calgary to San Francisco in July from $162

Return flights