Cheap flights from Ontario to San Francisco
Start here for the all-dates route view. Compare months, scan exact date pairs, then open a deal when the route lines up.
Lowest fare
€48
Typical for this route
€49
Current signal
Near typical
High fare
€80
Destination view
San Francisco is on the radar. Use the offers below to compare dates fast.
Best months on radar
Open a month-by-month route view
These month pages answer when this route tends to open best without replacing the all-dates route hub.
Best dates right now
Pick your travel window
These are the cheapest date pairs we found for this route.
Travel dates
4 Jun → 8 Jun
DirectOut 1h 38mBack 1h 32m
Frontier Airlines
€49
Near typical
Travel dates
4 Jun → 9 Jun
DirectOut 1h 38mBack 1h 30m
Frontier Airlines
€49
Near typical
Travel dates
4 Jun → 10 Jun
DirectOut 1h 38mBack 1h 30m
Frontier Airlines
€49
Near typical
Travel dates
4 Jun → 11 Jun
DirectOut 1h 38mBack 1h 27m
Frontier Airlines
€80
63% above typical
Travel dates
4 Jun → 15 Jun
DirectOut 1h 38mBack 1h 27m
Frontier Airlines
€80
63% above typical
Travel dates
4 Jun → 16 Jun
DirectOut 1h 38mBack 1h 30m
Frontier Airlines
€49
Near typical
Travel dates
4 Jun → 17 Jun
DirectOut 1h 38mBack 1h 30m
Frontier Airlines
€49
Near typical
Travel dates
6 Jun → 9 Jun
DirectOut 1h 38mBack 1h 35m
Frontier Airlines
€48
Near typical
Travel dates
9 Jun → 15 Jun
DirectOut 1h 32mBack 1h 27m
Frontier Airlines
€80
63% above typical
Travel dates
9 Jun → 16 Jun
DirectOut 1h 32mBack 1h 30m
Frontier Airlines
€49
Near typical