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Cheap flights from San Francisco to Los Angeles from $28

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Los Angeles departing on 5/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Francisco to Los Angeles

Cheap round-trip flights

These are some of the best round-trip flight deals from San Francisco to Los Angeles that have been recently found on momondo from popular airlines, departing in the coming months.
United Airlines Logo
4:12 pm - 5:39 pmSFO-ONT
1h 27mnonstop
United Airlines Logo
6:41 pm - 8:08 pmONT-SFO
1h 27mnonstop
$52United Airlines
Find Deal
mar., jun. 24 - mar., jun. 24
Frontier Logo
10:48 am - 12:15 pmSFO-ONT
1h 27mnonstop
Frontier Logo
8:24 am - 10:02 amONT-SFO
1h 38mnonstop
$56Frontier
Find Deal
sáb., may. 10 - lun., may. 12
Frontier Logo
8:34 am - 10:02 amSFO-ONT
1h 28mnonstop
Frontier Logo
8:24 am - 10:02 amONT-SFO
1h 38mnonstop
$57Frontier
Find Deal
vie., may. 9 - sáb., may. 10
Frontier Logo
10:48 am - 12:15 pmSFO-ONT
1h 27mnonstop
Frontier Logo
8:24 am - 10:02 amONT-SFO
1h 38mnonstop
$58Frontier
Find Deal
sáb., may. 10 - lun., may. 12
Frontier Logo
10:48 am - 12:15 pmSFO-ONT
1h 27mnonstop
Frontier Logo
8:24 am - 10:02 amONT-SFO
1h 38mnonstop
$59Frontier
Find Deal
sáb., may. 10 - lun., may. 12
United Airlines Logo
7:05 pm - 8:34 pmSFO-ONT
1h 29mnonstop
United Airlines Logo
1:45 pm - 3:13 pmONT-SFO
1h 28mnonstop
$67United Airlines
Find Deal
sáb., may. 10 - lun., may. 19
Southwest Logo
5:25 am - 11:00 amSFO-ONT
5h 35m1 stop
Southwest Logo
4:35 pm - 11:45 pmONT-SFO
7h 10m1 stop
$185Southwest
Find Deal
mié., jun. 25 - sáb., jun. 28
American Airlines Logo
12:04 pm - 6:23 pmSFO-ONT
6h 19m1 stop
American Airlines Logo
4:35 pm - 10:26 pmONT-SFO
5h 51m1 stop
$199American Airlines
Find Deal
sáb., may. 10 - lun., may. 19
Southwest Logo
4:45 pm - 9:00 pmSFO-ONT
4h 15m1 stop
Southwest Logo
5:05 pm - 10:40 pmONT-SFO
5h 35m1 stop
$217Southwest
Find Deal
mié., sep. 3 - jue., sep. 4
American Airlines Logo
3:50 pm - 9:57 pmSFO-ONT
6h 07m1 stop
American Airlines Logo
1:14 pm - 6:58 pmONT-SFO
5h 44m1 stop
$229American Airlines
Find Deal
vie., may. 9 - lun., may. 12

United Airlines flights from San Francisco to Ontario

Our best United Airlines deals on San Francisco to Ontario flight tickets
United Airlines
Jun 24
SFO4:12 pmSan Francisco
1h 27m
ONT5:39 pmOntario
Jun 24
ONT6:41 pmOntario
1h 27m
SFO8:08 pmSan Francisco
United Airlines
May 10
SFO7:05 pmSan Francisco
1h 29m
ONT8:34 pmOntario
May 19
ONT1:45 pmOntario
1h 28m
SFO3:13 pmSan Francisco
United Airlines
Jun 12
SFO9:18 pmSan Francisco
1h 27m
ONT10:45 pmOntario
Jun 13
ONT6:00 amOntario
1h 27m
SFO7:27 amSan Francisco

Frontier flights from San Francisco to Ontario

Our best Frontier deals on San Francisco to Ontario flight tickets
Frontier
May 10
SFO10:48 amSan Francisco
1h 27m
ONT12:15 pmOntario
May 12
ONT8:24 amOntario
1h 38m
SFO10:02 amSan Francisco
Frontier
May 9
SFO8:34 amSan Francisco
1h 28m
ONT10:02 amOntario
May 10
ONT8:24 amOntario
1h 38m
SFO10:02 amSan Francisco
Frontier
May 8
SFO8:34 amSan Francisco
1h 28m
ONT10:02 amOntario
May 12
ONT8:24 amOntario
1h 38m
SFO10:02 amSan Francisco

See travel insights to Los Angeles from

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 to Ontario?

In general, July is the cheapest month to fly from San Francisco to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $93. If you aren’t able to travel during the month of July, then book flights to Ontario from San Francisco during February instead. Flights to Ontario in February, while not as cheap as those in July, still average around $100.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Monday when prices can be found for as low as $104. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Ontario for around $126.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from San Francisco to Ontario when you can find flight prices for as low as $101. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $154 on average. Flights to Ontario from San Francisco in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest San Francisco to Ontario flight route?

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

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from San Francisco when booking 8 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $129 when searching 8 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from San Francisco for as low as $79 on momondo.

What cabin class options are available on San Francisco to Ontario flights?

There are 4 cabin classes available to choose from on San Francisco to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Francisco to Ontario flight prices changed over time?

As of April 2025, prices for San Francisco to Ontario flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Ontario (SFO to ONT) flight deals and tips

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

Best Price Found

$28

Fastest flight time

1h 20m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from San Francisco in the past 72 hours is $28. The best round-trip flight deal from San Francisco to Ontario found on momondo in the last 72 hours is $52.
The fastest flight from San Francisco to Ontario takes 1h 20m
Direct flights go from San Francisco to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)

  • 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 20m.

  • When did momondo last update prices for flights from San Francisco Airport to Ontario Airport?

    Prices for flights from San Francisco Airport to Ontario Airport were last updated today.

  • How many operators does momondo search for flights from San Francisco Airport to Ontario Airport?

  • How old do you have to be to fly from San Francisco Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Francisco to Ontario?

  • What is the most popular airline from San Francisco to Ontario?


Best airlines flying from San Francisco to Ontario

Compare and see reviews for airlines that fly from San Francisco to Ontario with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $32Free CancellationRating
6.3
7,961 reviews
Search Spirit Airlines flights
FrontierPriceFrom $38Free CancellationRating
5.9
3,287 reviews
Search Frontier flights
DeltaPriceFrom $58Free CancellationRating
8.0
7,929 reviews
Search Delta flights
Alaska AirlinesPriceFrom $59Free CancellationRating
8.0
9,961 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $74Free CancellationRating
7.4
8,696 reviews
Search United Airlines 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 $74. Generally, United Airlines has 11 flights on this route every week with an average price of $238. United Airlines is rated 7.4/10 by our users.


Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Ontario?

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.

Can I find flights from San Francisco to Ontario with flexible booking policies on momondo?

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

How can momondo help me find flights from San Francisco to Ontario?

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.

I’m not ready to book a flight from San Francisco to Ontario right now. Can momondo alert me if prices change?

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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