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Cheap flights from Ontario to San Francisco from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to San Francisco departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to San Francisco

Cheap round-trip flights

Southwest Logo
7:10 pm - 8:30 pmONT-SMF
1h 20mnonstop
Southwest Logo
6:25 am - 7:45 amSMF-ONT
1h 20mnonstop
$117Southwest
Find Deal
Tue, Sep 9 - Thu, Sep 11
Southwest Logo
2:55 pm - 9:15 pmONT-SMF
6h 20m2 stops
Southwest Logo
6:25 am - 7:45 amSMF-ONT
1h 20mnonstop
$132Southwest
Find Deal
Tue, Sep 9 - Thu, Sep 11
Southwest Logo
6:00 am - 7:20 amONT-SMF
1h 20mnonstop
Southwest Logo
8:50 am - 10:15 amSMF-ONT
1h 25mnonstop
$140Southwest
Find Deal
Fri, Sep 12 - Mon, Sep 15
Logo
8:00 am - 9:41 pmONT-SMF
13h 41m1 stop
Logo
9:33 am - 9:56 pmSMF-ONT
12h 23m1 stop
$141
Find Deal
Wed, Sep 10 - Wed, Sep 17
Frontier Logo
9:16 am - 4:30 pmONT-SMF
7h 14m1 stop
Frontier Logo
3:40 pm - 7:17 amSMF-ONT
15h 37m1 stop
$142Frontier
Find Deal
Thu, Sep 4 - Sun, Sep 7
Frontier Logo
6:00 am - 4:50 pmONT-SMF
10h 50m1 stop
Frontier Logo
3:11 pm - 7:17 amSMF-ONT
16h 06m1 stop
$143Frontier
Find Deal
Thu, Sep 18 - Sun, Sep 21
Frontier Logo
6:00 am - 4:47 pmONT-SMF
10h 47m1 stop
Frontier Logo
3:11 pm - 7:17 amSMF-ONT
16h 06m1 stop
$144Frontier
Find Deal
Thu, Aug 28 - Thu, Oct 2
Logo
8:00 am - 9:41 pmONT-SMF
13h 41m1 stop
Logo
9:33 am - 9:56 pmSMF-ONT
12h 23m1 stop
$165
Find Deal
Tue, Sep 16 - Tue, Sep 23
Delta Logo
6:00 am - 12:30 pmONT-SMF
6h 30m1 stop
Delta Logo
5:05 pm - 10:41 pmSMF-ONT
5h 36m1 stop
$177Delta
Find Deal
Thu, Sep 25 - Sat, Sep 27
Delta Logo
1:15 pm - 6:10 pmONT-SMF
4h 55m1 stop
Delta Logo
5:05 pm - 11:42 pmSMF-ONT
6h 37m1 stop
$180Delta
Find Deal
Fri, Sep 19 - Mon, Sep 22

Southwest flights from Ontario to Sacramento

Our best Southwest deals on Ontario to Sacramento flight tickets
Southwest
Sep 9
ONT7:10 pmOntario
1h 20m
SMF8:30 pmSacramento Intl
Sep 11
SMF6:25 amSacramento Intl
1h 20m
ONT7:45 amOntario
$117
Find similar
Southwest
Sep 9
ONT2:55 pmOntario
6h 20m
2 stops
SMF9:15 pmSacramento Intl
Sep 11
SMF6:25 amSacramento Intl
1h 20m
ONT7:45 amOntario
$132
Find similar
Southwest
Sep 12
ONT6:00 amOntario
1h 20m
SMF7:20 amSacramento Intl
Sep 15
SMF8:50 amSacramento Intl
1h 25m
ONT10:15 amOntario
$140
Find similar

Frontier flights from Ontario to Sacramento

Our best Frontier deals on Ontario to Sacramento flight tickets
Frontier
Sep 4
ONT9:16 amOntario
7h 14m
1 stop
SMF4:30 pmSacramento Intl
Sep 7
SMF3:40 pmSacramento Intl
15h 37m
1 stop
ONT7:17 amOntario
$142
Find similar
Frontier
Sep 18
ONT6:00 amOntario
10h 50m
1 stop
SMF4:50 pmSacramento Intl
Sep 21
SMF3:11 pmSacramento Intl
16h 06m
1 stop
ONT7:17 amOntario
$143
Find similar
Frontier
Aug 28
ONT6:00 amOntario
10h 47m
1 stop
SMF4:47 pmSacramento Intl
Oct 2
SMF3:11 pmSacramento Intl
16h 06m
1 stop
ONT7:17 amOntario
$144
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Sacramento that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 16, 2025.
Use the filters below to find and compare flights from Ontario to Sacramento that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Tue 9/9

7:10 pm-8:30 pm

Nonstop1h 20m

Sacramento Intl

Thu 9/11

6:25 am-7:45 am

Nonstop1h 20m

$117

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Tue 9/9

2:55 pm-9:15 pm

2 stops6h 20m

Sacramento Intl

Thu 9/11

6:25 am-7:45 am

Nonstop1h 20m

$132

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Fri 9/12

6:00 am-7:20 am

Nonstop1h 20m

Sacramento Intl

Mon 9/15

8:50 am-10:15 am

Nonstop1h 25m

$140

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Wed 9/10

8:00 am-9:41 pm

1 stop13h 41m

Sacramento Intl

Wed 9/17

9:33 am-9:56 pm

1 stop12h 23m

$141

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Thu 9/4

9:16 am-4:30 pm

1 stop7h 14m

Sacramento Intl

Sun 9/7

3:40 pm-7:17 am

1 stop15h 37m

$142

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Thu 9/18

6:00 am-4:50 pm

1 stop10h 50m

Sacramento Intl

Sun 9/21

3:11 pm-7:17 am

1 stop16h 06m

$143

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Thu 8/28

6:00 am-4:47 pm

1 stop10h 47m

Sacramento Intl

Thu 10/2

3:11 pm-7:17 am

1 stop16h 06m

$144

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Tue 9/16

8:00 am-9:41 pm

1 stop13h 41m

Sacramento Intl

Tue 9/23

9:33 am-9:56 pm

1 stop12h 23m

$165

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Thu 9/25

6:00 am-12:30 pm

1 stop6h 30m

Sacramento Intl

Sat 9/27

5:05 pm-10:41 pm

1 stop5h 36m

$177

OntarioSacramento

ONT - SMF

ONTSMF

Ontario

Fri 9/19

1:15 pm-6:10 pm

1 stop4h 55m

Sacramento Intl

Mon 9/22

5:05 pm-11:42 pm

1 stop6h 37m

$180

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Ontario to Sacramento

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 Sacramento?

The month of October is, on average, the cheapest month to fly to Sacramento from Ontario, with most prices found around $118. If you are unable to visit Sacramento during the month of October, then departing from Ontario during the month September is also very affordable. Most momondo users find prices during this month for around $172.

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

The cheapest day to depart from Ontario to Sacramento is on a Saturday when prices can be found for as low as $148. Flights from Ontario to Sacramento on a Sunday will generally be more expensive and average around $186. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Sacramento is at noon. momondo users have found flights departing from Ontario to Sacramento at noon for as low as $149. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around $198. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ontario to Sacramento Intl flight route?

Fly from Ontario to Sacramento Intl for the best Ontario - Sacramento Intl flight prices

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

You are more likely to see cheaper flights to Sacramento from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Sacramento for around $221 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sacramento from Ontario for as low as $148 on momondo.

What cabin class options are available on Ontario to Sacramento Intl flights?

There are 1 cabin classes available to choose from on Ontario to Sacramento Intl 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 Ontario to Sacramento flights?

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

How have Ontario to Sacramento flight prices changed over time?

As of August 2025, prices for Ontario to Sacramento flights are approximately 66% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Sacramento

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

Cheap Ontario to Sacramento (ONT to SMF) flight deals and tips

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

Best Price Found

$39

Fastest flight time

1h 20m

Direct flights

Every day

Airports in Sacramento

1 airport
The best one-way flight to Sacramento from Ontario in the past 72 hours is $39. The best round-trip flight deal from Ontario to Sacramento found on momondo in the last 72 hours is $117.
The fastest flight from Ontario to Sacramento takes 1h 20m
Direct flights go from Ontario to Sacramento every day.
There is 1 airport near Sacramento: Sacramento Intl (SMF)
Search flight deals

  • How far is Ontario to Sacramento Intl by plane?

    The straight-line distance from Ontario to Sacramento Intl is 378.1 mi. 1h 20m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Sacramento Intl Airport?

    Prices for flights from Ontario Airport to Sacramento Intl Airport are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Sacramento Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Sacramento Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Sacramento Intl Airport.

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

    The necessary travel and health documents for your Sacramento Intl 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 Ontario to Sacramento?

  • What is the most popular airline from Ontario to Sacramento?

Best airlines flying from Ontario to Sacramento

Compare and see reviews for airlines that fly from Ontario to Sacramento with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $46Free CancellationRating
5.8
3,211 reviews
Search Frontier flights
United AirlinesPriceFrom $186Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
SouthwestPriceFrom $195Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

  • Southwest Flights From Ontario to Sacramento

    Southwest flight deals from Ontario to Sacramento start from $195 round-trip. Over the 25 Southwest flights for this route in a normal week, average airfare is usually $268 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Chico
Oroville
Auburn
Yuba City
Rocklin
Lincoln
Placerville
Grass Valley
Marysville
Nevada City
El Dorado Hills
Plymouth
Willows

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Sacramento. momondo saves you time and could save you money on your trip.

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

All flight searches from Ontario to Sacramento on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Sacramento?

Once all potential Ontario to Sacramento 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 Ontario to Sacramento right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Sacramento now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sacramento and let you know when they change.

An easier way to manage your Sacramento trip

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