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Ontario

$64+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
SMF — ONT
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Sacramento Intl to Ontario are usually found in October or August, booked 37 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap 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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/10. 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.
Wed 12/316:16 pmSMF - ONT
1 stop23h 06mFrontier
Mon 1/126:00 amONT - SMF
1 stop7h 13mFrontier
Deal found 12/10$164
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Mon 12/157:41 pmSMF - ONT
1 stop25h 36mFrontier
Thu 12/256:07 pmONT - SMF
1 stop23h 14mFrontier
Deal found 12/10$239
This Southwest deal was found by Cheapflights users on 12/10. 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.
Wed 12/3111:50 amSMF - ONT
Nonstop1h 25mSouthwest
Mon 1/125:35 pmONT - SMF
Nonstop1h 30mSouthwest
Deal found 12/10$266
This Booking.com deal was found by Cheapflights users on 12/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:16 pmSMF - ONT
1 stop23h 06mFrontier
Tue 12/306:17 pmONT - SMF
1 stop23h 04mFrontier
Deal found 12/11$278
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Mon 12/226:16 pmSMF - ONT
1 stop23h 06mFrontier
Wed 12/316:00 amONT - SMF
1 stop11h 21mFrontier
Deal found 12/10$284
This Trip.com deal was found by Cheapflights users on 12/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:52 pmSMF - ONT
1 stop11h 07mFrontier
Fri 1/96:00 amONT - SMF
1 stop7h 13mFrontier
Deal found 12/10$285
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:10 amSMF - ONT
1 stop3h 51mUnited Airlines
Sun 1/186:00 amONT - SMF
1 stop4h 24mUnited Airlines
Deal found 12/11$292
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Mon 12/157:41 pmSMF - ONT
1 stop25h 36mFrontier
Thu 12/186:17 pmONT - SMF
1 stop23h 04mFrontier
Deal found 12/11$294
This Southwest deal was found by Cheapflights users on 12/10. 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.
Tue 12/303:15 pmSMF - ONT
Nonstop1h 20mSouthwest
Mon 1/125:35 pmONT - SMF
Nonstop1h 30mSouthwest
Deal found 12/10$296
This Mytrip deal was found by Cheapflights users on 12/10. 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.
Mon 12/157:41 pmSMF - ONT
1 stop25h 36mFrontier
Fri 12/196:00 amONT - SMF
1 stop11h 21mFrontier
Deal found 12/10$298

Find 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 December 12, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$129
(CheapOair)

One-way from

$64
(Mytrip)

Popular in

July

Cheapest in

October

Average price

$279
Provider with most accurate pricing for Sacramento Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sacramento Intl-Ontario flights.
Search Deals
From Sacramento Intl to Ontario
Search Deals
One-way flight from Sacramento Intl to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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 1/20

3:50 pm-8:45 pm

1 stop4h 55m

Ontario

Tue 1/27

12:55 pm-2:25 pm

Nonstop1h 30m

$179

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Tue 1/20

3:02 pm-11:58 pm

2 stops8h 56m

Ontario

Tue 1/27

5:10 pm-11:45 pm

1 stop6h 35m

$184

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Thu 1/8

1:20 pm-2:45 pm

Nonstop1h 25m

Ontario

Thu 1/15

8:10 pm-9:45 pm

Nonstop1h 35m

$193

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Wed 1/7

2:35 pm-8:20 pm

2 stops5h 45m

Ontario

Wed 1/14

5:55 am-1:15 pm

2 stops7h 20m

$199

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Thu 1/22

6:30 am-7:50 am

Nonstop1h 20m

Ontario

Sat 1/24

5:50 am-12:20 pm

1 stop6h 30m

$203

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Tue 5/5

6:15 am-9:43 am

1 stop3h 28m

Ontario

Tue 5/12

6:00 am-10:02 am

1 stop4h 02m

$207

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Wed 1/21

12:10 pm-9:45 pm

2 stops9h 35m

Ontario

Thu 1/22

11:15 am-5:55 pm

2 stops6h 40m

$211

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Fri 1/9

5:03 pm-11:56 pm

1 stop6h 53m

Ontario

Sun 1/11

6:00 am-8:03 pm

1 stop14h 03m

$224

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Wed 1/21

9:00 am-3:08 pm

1 stop6h 08m

Ontario

Sat 1/24

11:53 am-8:03 pm

1 stop8h 10m

$224

SacramentoOntario

SMF - ONT

SMFONT

Sacramento Intl

Fri 1/9

5:03 pm-11:56 pm

1 stop6h 53m

Ontario

Fri 1/16

4:03 pm-2:05 pm

1 stop22h 02m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 22 results
1
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Compare providers for flights from Sacramento to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sacramento to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sacramento-Ontario flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Sacramento-Ontario flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from Sacramento-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sacramento-Ontario flights, Cheapflights users trust Mytrip the most. Mytrip has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sacramento-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 5, 2025.

To ensure you get the cheapest price possible for a flight from Sacramento to Ontario, you should look to book at least 37 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, February is the cheapest month in which you can book a flight from Sacramento to Ontario (average of $19). Flying from Sacramento to Ontario in September is currently the most expensive (average of $60). 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 December 12, 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 at noon, which can drop the price by up to 18% 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 December 6, 2025.

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

The best insider tips for Sacramento to Ontario flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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

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 December 12, 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
7.9
Good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

7.9

Comfort

8.0

Crew

8.6

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
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

7.9

Comfort

8.0

Crew

8.6

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
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

7.9

Comfort

8.0

Crew

8.6

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
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

7.9

Comfort

8.0

Crew

8.6

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
3,084 reviews
Southwest
7.9
Good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

7.9

Comfort

8.0

Crew

8.6

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 3 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 28 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 4h 55m. Southwest provides one of the quickest options available for as low as $179. The distance between Sacramento and Ontario is about 390 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $49. 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 $313, our data indicates the cheapest price to be $84. The most popular route (Sacramento Intl - Ontario), is priced around $129.

  • 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, February is the cheapest month in which you can book a flight from Sacramento to Ontario (average of $19). Flying from Sacramento to Ontario in September is currently the most expensive (average of $60). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$155FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$257FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$158Average$316FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$185Average$292FlexibilityNo cancel feeOn-time63%

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