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

Return flights

27 Jun - 08 Jul	WestJet	direct
18 Jun - 16 Jul	WestJet	direct
16 Jun - 16 Jul	WestJet	direct
18 Jun - 25 Jun	WestJet
19 Jun - 23 Jun	WestJet
26 Jun - 14 Jul	Flair Airlines
29 Jun - 06 Jul	Flair Airlines
20 Jun - 23 Jun	Delta
19 Jun - 22 Jun	WestJet
27 Jun - 04 Jul	WestJet
18 Jun - 21 Jun	WestJet
20 Jun - 25 Jun	Delta
16 Jun - 21 Jun	WestJet
28 Jun - 06 Jul	Flair Airlines
23 Jun - 25 Jun	Flair Airlines
17 Jun - 21 Jun	WestJet
24 Jun - 30 Jun	Delta
29 Jun - 04 Jul	Flair Airlines
29 Jun - 01 Jul	Flair Airlines
27 Jun - 01 Jul	WestJet

Also check the deals for one-way flights from Calgary to San Francisco in June.

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 June from $171

Return flights