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$72+ Cheap flights from Sacramento to Ontario (SMF - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
SMF — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Sacramento Intl to Ontario are usually found in October or September, booked 60 days in advance, depart on a Monday or Sunday and return on a Friday

Cheap flight deals from Sacramento to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Sacramento (SMF) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$144
(CheapOair)

One-way from

$72
(Southwest)

Popular in

July

Cheapest in

October

Average price

$163
From Sacramento Intl to Ontario
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One-way flight from Sacramento Intl to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Sacramento to Ontario

Cheapest flights from Sacramento to Ontario
Explore the most affordable flight options available from Sacramento to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:19 pmSMF - ONT
1 stop16h 28mFrontier
Sat 10/257:04 amONT - SMF
1 stop28h 22mFrontier
Deal found 9/10$144
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:06 pmSMF - ONT
1 stop7h 48mFrontier
Sun 9/283:43 pmONT - SMF
1 stop19h 30mFrontier
Deal found 9/10$145
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:45 pmSMF - ONT
1 stop4h 10mFrontier
Sat 9/278:59 pmONT - SMF
1 stop14h 22mFrontier
Deal found 9/10$152
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/183:11 pmSMF - ONT
1 stop16h 06mFrontier
Sat 10/48:59 pmONT - SMF
1 stop14h 22mFrontier
Deal found 9/10$153
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:11 pmSMF - ONT
1 stop5h 45mFrontier
Thu 10/29:16 amONT - SMF
1 stop7h 34mFrontier
Deal found 9/10$154
This Booking.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1912:06 pmSMF - ONT
1 stop7h 48mFrontier
Sat 9/208:59 pmONT - SMF
1 stop14h 22mFrontier
Deal found 9/9$159
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/183:11 pmSMF - ONT
1 stop5h 45mFrontier
Sun 9/213:43 pmONT - SMF
1 stop19h 30mFrontier
Deal found 9/10$160
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:25 amSMF - ONT
Nonstop1h 20mSouthwest
Mon 10/276:40 pmONT - SMF
Nonstop1h 25mSouthwest
Deal found 9/10$161
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:06 pmSMF - ONT
1 stop7h 48mFrontier
Fri 9/266:00 amONT - SMF
1 stop10h 50mFrontier
Deal found 9/10$162
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:06 pmSMF - ONT
1 stop19h 47mFrontier
Thu 9/258:59 pmONT - SMF
1 stop14h 14mFrontier
Deal found 9/11$163
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:25 amSMF - ONT
Nonstop1h 20mSouthwest
Tue 10/1410:40 amONT - SMF
2 stops8h 25mSouthwest
Deal found 9/9$168

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sacramento to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Sacramento to Ontario that are best for you.

Fly from

Sacramento

Fly to

Ontario

Route

Depart

Return

Price

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Tue 10/28

2:40 pm-4:00 pm

Nonstop1h 20m

Ontario

Fri 11/7

7:25 am-8:50 am

Nonstop1h 25m

$152

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Mon 11/10

8:50 pm-10:15 pm

Nonstop1h 25m

Ontario

Wed 11/12

6:40 am-8:10 am

Nonstop1h 30m

$152

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Thu 10/23

6:25 am-7:45 am

Nonstop1h 20m

Ontario

Sat 10/25

7:00 am-8:25 am

Nonstop1h 25m

$152

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Sat 10/4

6:00 am-7:20 am

Nonstop1h 20m

Ontario

Tue 10/7

12:55 pm-2:15 pm

Nonstop1h 20m

$159

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Fri 10/24

6:25 am-7:45 am

Nonstop1h 20m

Ontario

Mon 10/27

6:40 pm-8:05 pm

Nonstop1h 25m

$161

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Wed 11/19

5:30 am-12:18 pm

1 stop6h 48m

Ontario

Wed 12/3

6:00 am-12:33 pm

1 stop6h 33m

$177

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Fri 10/10

6:25 am-7:45 am

Nonstop1h 20m

Ontario

Sun 10/12

6:45 am-8:15 am

Nonstop1h 30m

$215

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Tue 11/18

5:11 pm-11:52 pm

1 stop6h 41m

Ontario

Fri 12/5

4:49 pm-11:59 pm

1 stop7h 10m

$221

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Sat 10/11

1:25 pm-9:10 pm

1 stop7h 45m

Ontario

Sun 10/12

6:45 am-8:15 am

Nonstop1h 30m

$225

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Thu 10/2

6:25 am-7:45 am

Nonstop1h 20m

Ontario

Sun 10/5

8:00 pm-12:05 am

1 stop4h 05m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

The best insider tips for Sacramento to Ontario flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Sacramento to Ontario trip
Airports
SMF

Security lines at SMF can be hectic on weekday mornings, especially Mondays. Arrive early to avoid delays.

Read more about SMFby Matt Meltzer
ONT

ONT's rental car center offers quick access to I-10, ideal for exploring Southern California.

Read more about ONTby Bill Fink
Our travel experts
Bill Fink

Bill Fink

Expert on ONT

Bill Fink

Bill Fink

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more
Matt Meltzer

Matt Meltzer

Expert on SMF

Matt Meltzer

Matt Meltzer

Matt Meltzer has been a travel writer for over a decade, covering U.S. domestic locations and hotels for Thrillist, Fifty Grande, Matador Network, Conde Nast Traveler, and other top publications. He's won multiple travel journalism awards from the Society of American Travel Writers and North American Travel Journalists Association, and currently resides in South Florida.

Read more

Best time to book a flight from Sacramento to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sacramento with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sacramento to Ontario

How far ahead should I book a flight from Sacramento to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Sacramento to Ontario. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Sacramento to Ontario, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Sacramento to Ontario?

Currently, August is the cheapest month in which you can book a flight from Sacramento to Ontario (average of $246). Flying from Sacramento to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SMF to ONT?

Find hourly flight availability from Sacramento to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Sacramento to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 58% versus a flight in the evening.

What is the cheapest day to fly from Sacramento to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Sacramento to Ontario. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Sacramento to Ontario flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Sacramento to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Sacramento to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Sacramento to Ontario?

    If you book a flight from Sacramento to Ontario, you will be flying from Sacramento Intl to Ontario. Flights to Ontario (ONT) from Sacramento Intl (SMF) take 1h 20m for a nonstop flight. There are 5 flights from Sacramento Intl to Ontario per day from 4 airlines.

  • How popular is this Sacramento to Ontario flight route?

    Flights from Sacramento Intl to Ontario have been viewed 20 times in the past calendar month.

  • How long is the flight from Sacramento to Ontario?

    A quick flight from Sacramento to Ontario can take about 1h 20m. Southwest provides one of the quickest options available for as low as $152. The distance between Sacramento and Ontario is about 390 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Sacramento to Ontario round-trip?

    Flying on Frontier is currently your cheapest option to Ontario, with prices starting at $42. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $98 and $158, respectively. Frontier is priced at 81% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Sacramento to Ontario?

    Looking for the cheapest flight from Sacramento to Ontario? While on average our users pay $226, our data indicates the cheapest price to be $38. The most popular route (Sacramento Intl - Ontario), is priced around $144.

  • Can I find deals for flights from Sacramento to Ontario that include hotel bookings?

    Yes. In addition to deals on Sacramento to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sacramento to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sacramento to Ontario.

  • Can I find deals for business class flights from Sacramento to Ontario?

    Yes. Cheapflights offers flight deals from Sacramento to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sacramento to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Sacramento to Ontario (average of $246). Flying from Sacramento to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from Sacramento to Ontario

Discover the top 4 airlines that operate flights from Sacramento to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$42Average$109FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$188FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$158Average$348FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$186Average$280FlexibilityNo cancel feeOn-time63%

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