Cheap flights from San Francisco to Ontario from $37

Round-trip
1 adult
Economy
From?
To?
Sat 7/2
Sat 7/9

Deals available from 900+ travel sites.

Flight information for San Francisco to Ontario
(SFO to ONT)

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Ontario

Best Price Found

$37

Fastest flight time

1h 31m

Direct flights

Tue, Wed, Fri and Sun

Airports in Ontario

1 airport
The best one-way flight to Ontario from San Francisco in the past 72 hours is $37. The best round-trip flight deal from San Francisco to Ontario found on momondo in the last 72 hours is $88.
The fastest flight from San Francisco to Ontario takes 1h 31m
Direct flights go from San Francisco to Ontario on Tuesday, Wednesday, Friday and Sunday. The only airline offering direct flights is United Airlines.
There is 1 airport near Ontario: Ontario (ONT)

How to get the cheapest flight ticket from San Francisco to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from San Francisco to Ontario?

October

The cheapest time of year to fly to Ontario from San Francisco is October. Most expensive is June

What is the cheapest day to depart San Francisco for Ontario?

Monday

The cheapest day of the week is typically Monday. The most expensive is typically Tuesday

When is the cheapest time to fly from San Francisco to Ontario?

in the morning

San Francisco to Ontario flights are approximately 54% more expensive at noon than in the morning

What is the cheapest airline that flies to Ontario from San Francisco?

Juneyao Airlines

Alaska Airlines, Delta, and Frontier are the most popular carriers operating from San Francisco to Ontario

What is the cheapest San Francisco to Ontario flight route?

San Francisco - Ontario

Fly from San Francisco to Ontario for the best San Francisco - Ontario flight prices

How far in advance should you book San Francisco to Ontario flights?

21 days before

The cheapest time to buy a flight from San Francisco to Ontario is approximately 21 days to departure

When you’re planning your trip from San Francisco to Ontario, the most popular airport-to-airport route is San Francisco Airport to Ontario Airport. You may be looking for an airport near San Francisco Airport to depart from when traveling to Ontario and luckily, there are options! You can try Oakland Airport which is located in Oakland, San Jose Airport which is located in San Jose, or Santa Rosa Sonoma County Airport which is located in Santa Rosa. When traveling from San Francisco, it is helpful to have an alternative airport to fly into when you land in Ontario. Good options for arrival airports in Ontario, you can try Los Angeles Airport (in Los Angeles), Santa Ana J. Wayne/Orange Cnty Airport (in Santa Ana), or Burbank Bob Hope Airport (in Burbank). The cheapest route from San Francisco to Ontario is OAK — LAX with an average price of $55 RT during the month of June.

San Francisco Airport (SFO) to Los Angeles Airport (LAX)$82
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San Francisco Airport (SFO) to Santa Ana J. Wayne/Orange Cnty Airport (SNA)$133
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Oakland Airport (OAK) to Los Angeles Airport (LAX)$55
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San Jose Airport (SJC) to Los Angeles Airport (LAX)$98
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San Jose Airport (SJC) to Ontario Airport (ONT)$396
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Oakland Airport (OAK) to Ontario Airport (ONT)$153
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Easily compare round-trip flights from San Francisco to Ontario

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from San Francisco to Ontario by changing tabs
Frontier
Sep 16
SFO5:31 amSan Francisco
1h 34m
ONT7:05 amOntario
Sep 19
ONT7:59 amOntario
1h 28m
SFO9:27 amSan Francisco
Multiple Airlines
Jul 19
SFO6:35 pmSan Francisco
1h 31m
ONT8:06 pmOntario
Sep 26
ONT7:59 amOntario
1h 28m
SFO9:27 amSan Francisco
United Airlines
Jul 19
SFO6:35 pmSan Francisco
1h 31m
ONT8:06 pmOntario
Jul 23
ONT2:00 amOntario
1h 22m
SFO3:22 amSan Francisco
Frontier
Sep 8
SFO11:17 amSan Francisco
1h 34m
ONT12:51 pmOntario
Sep 11
ONT2:05 pmOntario
1h 28m
SFO3:33 pmSan Francisco
Frontier
Jul 19
SFO7:01 pmSan Francisco
8h 04m
1 stop
ONT3:05 amOntario
Sep 26
ONT7:59 amOntario
1h 28m
SFO9:27 amSan Francisco
Multiple Airlines
Sep 6
SFO6:52 amSan Francisco
1h 24m
ONT8:16 amOntario
Sep 8
ONT1:36 pmOntario
1h 28m
SFO3:04 pmSan Francisco

Find the cheapest one-way flights from San Francisco to Ontario

If you're looking for one-way flights from San Francisco to Ontario, view some of our deals below provided by Frontier and United Airlines
Frontier
Sep 12
SFO5:31 amSan Francisco
1h 34m
ONT7:05 amOntario
United Airlines
Jul 30
SFO6:40 pmSan Francisco
1h 31m
ONT8:11 pmOntario
Frontier
Sep 30
SFO5:31 amSan Francisco
1h 34m
ONT7:05 amOntario

Search last-minute flights to Ontario from San Francisco

Find and compare round-trip flight prices for your last-minute flight from San Francisco to Ontario
Frontier
Jul 7
SFO7:02 pmSan Francisco
8h 06m
1 stop
ONT3:08 amOntario
Jul 12
ONT9:09 amOntario
9h 02m
1 stop
SFO6:11 pmSan Francisco
United Airlines
Jul 4
SFO6:35 pmSan Francisco
1h 31m
ONT8:06 pmOntario
Jul 30
ONT2:00 amOntario
1h 22m
SFO3:22 amSan Francisco
Multiple Airlines
Jul 2
SFO1:20 pmSan Francisco
4h 22m
1 stop
ONT5:42 pmOntario
Jul 6
ONT2:28 pmOntario
13h 22m
1 stop
SFO3:50 amSan Francisco
American Airlines
Jul 6
SFO8:06 amSan Francisco
3h 51m
1 stop
ONT11:57 amOntario
Jul 7
ONT12:48 pmOntario
5h 33m
1 stop
SFO6:21 pmSan Francisco
Frontier
Jul 2
SFO6:11 pmSan Francisco
8h 59m
1 stop
ONT3:10 amOntario
Jul 5
ONT5:53 pmOntario
9h 57m
1 stop
SFO3:50 amSan Francisco
United Airlines
Jul 2
SFO6:40 pmSan Francisco
1h 31m
ONT8:11 pmOntario
Jul 30
ONT2:00 amOntario
1h 22m
SFO3:22 amSan Francisco

Best airlines flying from San Francisco to Ontario

Compare and see reviews for airlines that fly from San Francisco to Ontario with momondo
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $10Free CancellationRating
0.0
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FrontierPriceFrom $32Free CancellationRating
6.2
6.4

Boarding

5.8

Comfort

7.0

Crew

4.7

Entertainment

5.0

Food

Reviews

5 member crew including 1 deadhead. Not sure if he was working but wonder about some of the others. Liquid dripping on passengers and they offered paper towels. A young man who seemed very agitated collapsed into the aisle just before landing and no one moved. Not even deadhead just in front of him. I think he had been overserved and they tried to forget that. Very bumpy landing. Flight attendant offered fresh air, not barf bags. Better than most Frontier flights but not saying much. Won't fly again.

1 / 10
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Alaska AirlinesPriceFrom $38Free CancellationRating
7.9
8.2

Boarding

7.9

Comfort

8.5

Crew

7.2

Entertainment

7.1

Food

Reviews

Bathrooms were a little dirty and could have been kept up better with all the people using it. They did check our carry on for free since the flight was full and we were checking bags anyways, so that was nice. Pilot was great and the trip was less time than originally anticipated.

1 / 10
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JetBluePriceFrom $44Free CancellationRating
6.9
7.1

Boarding

7.3

Comfort

7.7

Crew

7.0

Entertainment

6.5

Food

Reviews

So bad

1 / 10
Search JetBlue flights
United AirlinesPriceFrom $78Free CancellationRating
7.2
7.5

Boarding

7.1

Comfort

8.0

Crew

6.9

Entertainment

6.5

Food

Reviews

Delayed over eight hours!

1 / 10
Search United Airlines flights
DeltaPriceFrom $93Free CancellationRating
7.8
7.9

Boarding

8.0

Comfort

8.3

Crew

7.7

Entertainment

7.3

Food

Reviews

One of the crew member weren’t to pleasant

1 / 10
Search Delta flights
American AirlinesPriceFrom $120Free CancellationRating
7.0
7.4

Boarding

7.1

Comfort

8.0

Crew

6.8

Entertainment

6.4

Food

Reviews

So this review is related to some things related more to the airports and higher-level stuff. One issue was that this was the second leg of an international flight for me. It was an American Airlines codeshare with Finnair. American Airlines had alerted Finnair about some additional security measures but did not mention the fact that any liquids purchased at the Duty Free stores en route would NOT be allowed through security at Chicago when transferring to the domestic terminal. Passengers did have the option of placing those liquids in their checked baggage but what if that wasn't an option? Another issue is just related to ORD, it was a zoo. I know that's beyond what this review is about but big airlines like American have some part to play in how the airport operates.

1 / 10
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JSXPriceFrom $147Free CancellationRating
0.0
Search JSX flights
  • United Airlines Flights From San Francisco to Ontario

    The lowest priced United Airlines flight from San Francisco to Ontario from the last 72 hours was $78. Generally, United Airlines has 26 flights on this route every week with an average price of $243. United Airlines is rated 7.2/10 by our users.


United Airlines flights from San Francisco to Ontario

Our best United Airlines deals on San Francisco to Ontario flight tickets
United Airlines
Jul 19
SFO6:35 pmSan Francisco
1h 31m
ONT8:06 pmOntario
Jul 23
ONT2:00 amOntario
1h 22m
SFO3:22 amSan Francisco
United Airlines
Jul 23
SFO6:40 pmSan Francisco
1h 31m
ONT8:11 pmOntario
Jul 24
ONT2:00 amOntario
1h 22m
SFO3:22 amSan Francisco
United Airlines
Jul 12
SFO12:25 pmSan Francisco
1h 35m
ONT2:00 pmOntario
Aug 10
ONT2:00 amOntario
1h 22m
SFO3:22 amSan Francisco

Frontier flights from San Francisco to Ontario

Our best Frontier deals on San Francisco to Ontario flight tickets
Frontier
Sep 16
SFO5:31 amSan Francisco
1h 34m
ONT7:05 amOntario
Sep 19
ONT7:59 amOntario
1h 28m
SFO9:27 amSan Francisco
Frontier
Sep 8
SFO11:17 amSan Francisco
1h 34m
ONT12:51 pmOntario
Sep 11
ONT2:05 pmOntario
1h 28m
SFO3:33 pmSan Francisco
Frontier
Jul 19
SFO7:01 pmSan Francisco
8h 04m
1 stop
ONT3:05 amOntario
Sep 26
ONT7:59 amOntario
1h 28m
SFO9:27 amSan Francisco

  • Are airlines flying from San Francisco to Ontario offering flexible cancellation due to COVID-19?

    To ease the stress of booking flights, some of our airline partners flying from San Francisco to Ontario are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: United Airlines, Frontier, and Southwest.

  • How far is San Francisco to Ontario by plane?

    There are 370.2 mi between San Francisco and Ontario. By plane, this route typically takes 1h 24m.



Alternative routes for San Francisco to Ontario

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Los Angeles to San Francisco Flights
Fastest flight time1h 17m
Cheapest price$86
San Francisco to Los Angeles Flights
Fastest flight time1h 20m
Cheapest price$82
Santa Ana to San Francisco Flights
Fastest flight time1h 20m
Cheapest price$106
San Francisco to Santa Ana Flights
Fastest flight time1h 29m
Cheapest price$133
San Jose to Los Angeles Flights
Fastest flight time1h 23m
Cheapest price$98
Oakland, California to Los Angeles Flights
Fastest flight time1h 19m
Cheapest price$55
San Francisco to San Diego Flights
Fastest flight time1h 26m
Cheapest price$106
Los Angeles to Oakland, California Flights
Fastest flight time1h 13m
Cheapest price$59
Los Angeles to San Jose Flights
Fastest flight time1h 10m
Cheapest price$98
Oakland, California to San Diego Flights
Fastest flight time1h 20m
Cheapest price$49
Ontario to San Francisco Flights
Fastest flight time1h 21m
Cheapest price$88
San Diego to San Francisco Flights
Fastest flight time1h 29m
Cheapest price$102

Similar San Francisco to Ontario flights

Flexible with your destination? Broaden your search and find flights similar to your San Francisco to Ontario route

Why use momondo?

It is quick and easy to find San Francisco to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Yes. All flights to Ontario from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

Once all potential San Francisco to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

Of course. momondo tracks the price of San Francisco to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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