AirHint found the following cheapest return flights from Waterloo (YKF) to San Francisco (SFO) in July 2026 (see full year).
Return flights
| 24 Jul - 26 Jul | WestJet | ||
| 24 Jul - 28 Jul | WestJet | ||
| 08 Jul - 16 Jul | WestJet | ||
| 13 Jul - 17 Jul | WestJet | ||
| 13 Jul - 20 Jul | WestJet | ||
| 27 Jul - 27 Aug | WestJet | ||
| 09 Jul - 16 Jul | WestJet | ||
| 30 Jul - 04 Aug | WestJet |
Also check the deals for one-way flights from Waterloo to San Francisco in July.
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