Cheapest return flights from Ontario to San Francisco in December from $152

Best time to book flights for Ontario (ONT) to San Francisco (SFO) flights at AirHint

AirHint found the following cheapest return flights from Ontario (ONT) to San Francisco (SFO) in December 2024 (see full year).

Return flights

29 Dec - 30 Dec Frontier Airlines direct
29 Dec - 02 Jan Frontier Airlines direct
30 Dec - 02 Jan Frontier Airlines direct
29 Dec - 04 Jan Frontier Airlines
30 Dec - 04 Jan Frontier Airlines
30 Dec - 30 Dec Frontier Airlines
30 Dec - 01 Jan Frontier Airlines
31 Dec - 01 Jan Frontier Airlines
31 Dec - 05 Jan Frontier Airlines
31 Dec - 10 Jan Southwest Airlines
30 Dec - 30 Dec United direct
31 Dec - 01 Jan United direct

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

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.

Book a cheap hotel in San Francisco

Cheap car rent in San Francisco