San Francisco, CA to Ontario, CA flights

Flights starting at £27. Choose between Frontier Airlines, United Airlines, or American Airlines to find the best price.

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Cheapest one-way trip

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Average round-trip

Nonstop flights in September

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One-way trips

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San Francisco SFOOntario ONT
£51
San Francisco SFOOntario ONT
£58
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Travelers usually depart from San Francisco International, San Francisco, CA Train Station, or San Francisco, CA - Fisherman’s Wharf when they travel from San Francisco to Ontario. Book your trip to arrive at Ontario International, Ontario Bus Stop, Ontario, CA station, or Montclair (Ontario). The distance between San Francisco and Ontario is 586 km. The most popular airlines for this route are Frontier Airlines, United Airlines, American Airlines, Spirit Airlines, and Alaska Airlines. San Francisco and Ontario have 171 direct flights per week.

Weekly direct flights

Discover the top airlines offering direct flights from San Francisco to Ontario in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Mon 18.09 - Sun 24.09

AirlineMon 18.09Tue 19.09Wed 20.09Thu 21.09Fri 22.09Sat 23.09Sun 24.09
8544575
1------1------1

Weekly direct flights for Mon 25.09 - Sun 01.10

AirlineMon 25.09Tue 26.09Wed 27.09Thu 28.09Fri 29.09Sat 30.09Sun 01.10
6664554
1------11---1

Weekly direct flights for Mon 02.10 - Sun 08.10

AirlineMon 02.10Tue 03.10Wed 04.10Thu 05.10Fri 06.10Sat 07.10Sun 08.10
United Airlines
5454444
1------1211

Weekly direct flights for Mon 09.10 - Sun 15.10

AirlineMon 09.10Tue 10.10Wed 11.10Thu 12.10Fri 13.10Sat 14.10Sun 15.10
4444444
2121211

Check-in for a flight from San Francisco to Ontario

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
American AirlinesAALAANoNo
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight

Ontario travel tips

1) Sweets lovers of Ontario love My Delight Cupcakery
2) Go karting at a modern venue in Ontario
3) Rent a car to get around Ontario
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

How long does it take to travel from San Francisco to Ontario?
What is the flight distance between San Francisco and Ontario?
What airlines offer nonstop (direct) flights between San Francisco and Ontario?
What are the most popular routes to and from San Francisco?
What are the most popular routes to and from Ontario?
What airports are near San Francisco?
What airports are near Ontario?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between San Francisco and Ontario?
What is Virtual Interlining and how do I use it?
Which airlines fly between San Francisco and Ontario?
When's the best time to travel between San Francisco and Ontario?
What flights operate between San Francisco and Ontario?
How many airports are there near San Francisco?
How many airports are there near Ontario?
What time do nonstop (direct) flights between San Francisco and Ontario depart?
What time do nonstop (direct) flights between San Francisco and Ontario arrive?
What time do flights between San Francisco and Ontario depart?
What time do flights between San Francisco and Ontario arrive?

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