Cheapest return flights from San Francisco to Ontario in November from $98

AirHint found the following cheapest return flights from San Francisco (SFO) to Ontario (ONT) in November 2025 (see full year).

Return flights

14 Nov - 16 Nov Frontier Airlines direct
08 Nov - 10 Nov Southwest Airlines
10 Nov - 13 Nov Southwest Airlines
17 Nov - 19 Nov Southwest Airlines
02 Nov - 02 Nov Frontier Airlines
08 Nov - 10 Nov United direct
19 Nov - 21 Nov Southwest Airlines
15 Nov - 17 Nov Southwest Airlines
25 Nov - 01 Dec Frontier Airlines direct
14 Nov - 21 Nov Southwest Airlines
26 Nov - 28 Nov Southwest Airlines

Also check the deals for one-way flights from San Francisco to Ontario in November.

Skyscanner

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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