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Cheap flights from San Francisco to Ontario 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 Ontario departing on 12/16. 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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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.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from San Francisco to Los Angeles.

Cheap last minute flights

Planning a quick getaway from San Francisco to Los Angeles? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Los Angeles, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from San Francisco to Los Angeles

Find recent round-trip train or bus tickets from San Francisco to Los Angeles.

All round-trip flight deals to Los Angeles

The cheapest plane tickets to Los Angeles found on KAYAK recently.
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$55Frontier
Find Deal
Fri, Jan 24 - Mon, Jan 27
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
7:47 pm - 9:18 pmONT-SFO
1h 31mnonstop
$56Frontier
Find Deal
Mon, Dec 16 - Thu, Dec 19
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$57Frontier
Find Deal
Fri, Jan 24 - Sun, Jan 26
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$58Frontier
Find Deal
Fri, Jan 10 - Sun, Jan 12
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:00 am - 7:35 amONT-SFO
1h 35mnonstop
$59Frontier
Find Deal
Mon, Jan 27 - Fri, Jan 31
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
2:00 pm - 3:32 pmONT-SFO
1h 32mnonstop
$60Frontier
Find Deal
Sun, Dec 8 - Mon, Dec 9
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$62Frontier
Find Deal
Fri, Jan 17 - Sun, Jan 19
2:29 pm - 3:51 pmSFO-ONT
1h 22mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$63Frontier
Find Deal
Mon, Jan 6 - Sun, Jan 19
1:05 pm - 2:33 pmSFO-ONT
1h 28mnonstop
6:28 pm - 8:01 pmONT-SFO
1h 33mnonstop
$174United Airlines
Find Deal
Wed, Dec 18 - Wed, Dec 18
7:00 pm - 8:29 pmSFO-ONT
1h 29mnonstop
10:47 am - 12:20 pmONT-SFO
1h 33mnonstop
$199United Airlines
Find Deal
Mon, Jan 20 - Wed, Jan 22
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
$28Frontier
Find Deal
Mon, Dec 16
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
$30Frontier
Find Deal
Fri, Dec 6
5:32 pm - 6:57 pmSFO-ONT
1h 25mnonstop
$33Frontier
Find Deal
Fri, Jan 3
7:10 pm - 8:40 pmSFO-ONT
1h 30mnonstop
$79United Airlines
Find Deal
Sat, Feb 15
8:25 am - 9:51 amSFO-ONT
1h 26mnonstop
$99United Airlines
Find Deal
Thu, Jan 23
4:09 pm - 10:05 pmSFO-ONT
5h 56m1 stop
$108American Airlines
Find Deal
Sun, Feb 16
11:00 am - 8:13 pmSFO-ONT
9h 13m2 stops
$116Alaska Airlines
Find Deal
Wed, Jan 8
9:15 am - 10:34 amSFO-ONT
25h 19m1 stop
$117Alaska Airlines
Find Deal
Mon, Jan 20
7:00 am - 6:25 pmSFO-ONT
11h 25m2 stops
$193American Airlines
Find Deal
Wed, Jan 1
5:12 pm - 10:36 pmSFO-ONT
5h 24m1 stop
$288Delta
Find Deal
Wed, Dec 25
4:36 pm - 6:02 pmSFO-ONT
1h 26mnonstop
4:07 pm - 5:33 pmONT-SFO
1h 26mnonstop
$93Frontier
Find Deal
Sat, Nov 23 - Mon, Nov 25
4:36 pm - 6:02 pmSFO-ONT
1h 26mnonstop
6:52 pm - 8:19 pmONT-SFO
1h 27mnonstop
$117Frontier
Find Deal
Thu, Nov 21 - Mon, Nov 25
4:36 pm - 6:02 pmSFO-ONT
1h 26mnonstop
6:52 pm - 8:19 pmONT-SFO
1h 27mnonstop
$129Frontier
Find Deal
Sat, Nov 23 - Mon, Nov 25
4:36 pm - 6:02 pmSFO-ONT
1h 26mnonstop
6:52 pm - 8:19 pmONT-SFO
1h 27mnonstop
$130Frontier
Find Deal
Thu, Nov 21 - Sun, Nov 24
4:36 pm - 6:02 pmSFO-ONT
1h 26mnonstop
6:52 pm - 8:19 pmONT-SFO
1h 27mnonstop
$132Frontier
Find Deal
Thu, Nov 21 - Sun, Nov 24
3:55 pm - 10:02 pmSFO-ONT
6h 07m1 stop
10:10 am - 4:02 pmONT-SFO
5h 52m1 stop
$333American Airlines
Find Deal
Fri, Nov 22 - Sun, Nov 24
3:55 pm - 10:02 pmSFO-ONT
6h 07m1 stop
6:10 am - 12:31 pmONT-SFO
6h 21m1 stop
$438American Airlines
Find Deal
Fri, Nov 22 - Sat, Nov 23
10:25 am - 9:30 pmSFO-ONT
11h 05m2 stops
5:10 am - 10:05 amONT-SFO
4h 55m1 stop
$495Southwest
Find Deal
Sat, Nov 23 - Sun, Dec 8
11:35 am - 1:00 pmSFO-ONT
1h 25mnonstop
3:15 pm - 4:48 pmONT-SFO
1h 33mnonstop
$514United Airlines
Find Deal
Tue, Nov 19 - Tue, Nov 19
9:00 pm - 10:23 pmSFO-ONT
1h 23mnonstop
6:00 am - 7:26 amONT-SFO
1h 26mnonstop
$521United Airlines
Find Deal
Sat, Nov 23 - Sun, Dec 1
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
2:00 pm - 3:32 pmONT-SFO
1h 32mnonstop
$48Frontier
Find Deal
Fri, Dec 6 - Mon, Dec 9
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
2:00 pm - 3:32 pmONT-SFO
1h 32mnonstop
$49Frontier
Find Deal
Fri, Dec 6 - Mon, Dec 9
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$55Frontier
Find Deal
Fri, Jan 24 - Sun, Jan 26
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
7:47 pm - 9:18 pmONT-SFO
1h 31mnonstop
$56Frontier
Find Deal
Mon, Dec 16 - Thu, Dec 19
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$57Frontier
Find Deal
Fri, Jan 24 - Sun, Jan 26
9:59 pm - 11:23 pmSFO-ONT
1h 24mnonstop
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
$58Frontier
Find Deal
Fri, Jan 10 - Mon, Jan 13
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
6:00 am - 7:35 amONT-SFO
1h 35mnonstop
$59Frontier
Find Deal
Mon, Jan 27 - Fri, Jan 31
1:43 pm - 3:05 pmSFO-ONT
1h 22mnonstop
2:00 pm - 3:32 pmONT-SFO
1h 32mnonstop
$60Frontier
Find Deal
Mon, Dec 2 - Mon, Dec 9
4:15 pm - 5:43 pmSFO-ONT
1h 28mnonstop
10:39 am - 12:20 pmONT-SFO
1h 41mnonstop
$168United Airlines
Find Deal
Wed, Dec 18 - Tue, Dec 24
1:05 pm - 2:33 pmSFO-ONT
1h 28mnonstop
6:28 pm - 8:01 pmONT-SFO
1h 33mnonstop
$174United Airlines
Find Deal
Wed, Dec 18 - Wed, Dec 18

Frontier flights from San Francisco to Ontario

Our best Frontier deals on San Francisco to Ontario flight tickets
Frontier
Jan 24
SFO9:59 pmSan Francisco
1h 25m
ONT11:24 pmOntario
Jan 27
ONT6:45 amOntario
1h 35m
SFO8:20 amSan Francisco
Frontier
Dec 16
SFO9:59 pmSan Francisco
1h 24m
ONT11:23 pmOntario
Dec 19
ONT7:47 pmOntario
1h 31m
SFO9:18 pmSan Francisco
Frontier
Jan 24
SFO9:59 pmSan Francisco
1h 25m
ONT11:24 pmOntario
Jan 26
ONT6:45 amOntario
1h 35m
SFO8:20 amSan Francisco

United Airlines flights from San Francisco to Ontario

Our best United Airlines deals on San Francisco to Ontario flight tickets
United Airlines
Dec 18
SFO1:05 pmSan Francisco
1h 28m
ONT2:33 pmOntario
Dec 18
ONT6:28 pmOntario
1h 33m
SFO8:01 pmSan Francisco
United Airlines
Jan 20
SFO7:00 pmSan Francisco
1h 29m
ONT8:29 pmOntario
Jan 22
ONT10:47 amOntario
1h 33m
SFO12:20 pmSan Francisco
United Airlines
Nov 27
SFO9:00 pmSan Francisco
1h 23m
ONT10:23 pmOntario
Dec 4
ONT6:00 amOntario
1h 26m
SFO7:26 amSan Francisco

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?

May. The cheapest time of year to fly to Ontario from San Francisco is May. Most expensive is January

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

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Friday

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

At noon. San Francisco to Ontario flights are approximately 52% more expensive in the evening than at noon

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

Frontier. Frontier, Delta, and Spirit Airlines 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?

55 days before. The cheapest time to buy a flight from San Francisco to Ontario is approximately 55 days to departure

How many flights depart from San Francisco to Ontario on average per day?

The number of flights available between San Francisco and Ontario is 11 per day as of November 2024. The most frequent departure time is 4:00PM, with 44% of daily flights leaving in the afternoon.

How many flights depart from San Francisco to Ontario on average per week?

As of November 2024, there are 79 flights per week flying from San Francisco to Ontario. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

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

There are 2 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.

Can stopping save me money on San Francisco to Ontario flights?

No. A direct flight is the cheapest option for a flight between San Francisco to Ontario.

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

As of November 2024, prices for San Francisco to Ontario flights are approximately 14% cheaper 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 22m

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 $55.
The fastest flight from San Francisco to Ontario takes 1h 22m
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 22m.

  • 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 $33Free CancellationRating
6.3
8,176 reviews
Search Spirit Airlines flights
FrontierPriceFrom $41Free CancellationRating
6.1
3,543 reviews
Search Frontier flights
DeltaPriceFrom $45Free CancellationRating
8.0
8,766 reviews
Search Delta flights
Alaska AirlinesPriceFrom $55Free CancellationRating
8.0
9,451 reviews
Search Alaska Airlines flights
Breeze AirwaysPriceFrom $78Free CancellationRating
8.2
123 reviews
Search Breeze Airways flights
United AirlinesPriceFrom $136Free CancellationRating
7.4
9,168 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 $136. Generally, United Airlines has 34 flights on this route every week with an average price of $269. United Airlines is rated 7.4/10 by our users.

  • Frontier Flights From San Francisco to Ontario

    $41 is the best Frontier flight deal from San Francisco to Ontario found on momondo over the last 72 hours. The average Frontier ticket price found was closer to $96, however, with flight time and availability significantly affecting the price. Frontier (6.1/10 from 3,542 user reviews) flies into Ontario from San Francisco 2 times in an average week so prices can vary.


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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