Alaska Airlines Flights from Ontario to San Francisco
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1 Passenger
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Lowest fares from Ontario to San Francisco
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One-way low-fare flights Ontario to San Francisco.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Feb 1, 2026 | From $368 Seen: 1 day ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Apr 17, 2026 | From $169 Seen: 15 hours ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Apr 27, 2026 | From $187 Seen: 1 day ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Feb 13, 2026 | From $207 Seen: 1 day ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Jun 27, 2026 | From $227 Seen: 20 hours ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Feb 7, 2026 | From $267 Seen: 17 hours ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Apr 23, 2026 | From $179 Seen: 5 hours ago | |
| Ontario (ONT) | San Francisco (SFO) | One-way | Saver | Depart: Feb 16, 2026 | From $283 Seen: 3 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.