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$138+ Cheap flights from Sioux Falls to Ontario (FSD - 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ONT
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Sioux Falls to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) 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 January 14, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$201
(Booking.com)

One-way from

$138
(Trip.com)

Popular in

April

Cheapest in

February

Average price

$473
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Ontario flight deals.
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Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Ontario flights.
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From Sioux Falls Joe Foss Field to Ontario
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One-way flight from Sioux Falls Joe Foss Field to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Sioux Falls to Ontario

Cheapest flights from Sioux Falls to Ontario
Explore the most affordable flight options available from Sioux Falls to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This Booking.com deal was found by Cheapflights users on 1/14. 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 2/192:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Wed 2/258:40 am
ONT
-
FSD
1 stop26h 41m
Frontier
Deal found 1/14$201
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/131:41 pm
FSD
-
ONT
1 stop12h 18m
Frontier
Mon 2/166:10 am
ONT
-
FSD
1 stop5h 47m
Frontier
Deal found 1/12$249
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:40 pm
FSD
-
ONT
1 stop17h 32m
Multiple Airlines
Wed 4/86:15 am
ONT
-
FSD
1 stop5h 30m
Multiple Airlines
Deal found 1/12$286
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/309:01 pm
FSD
-
ONT
2 stops28h 58m
Multiple Airlines
Wed 4/86:15 am
ONT
-
FSD
1 stop5h 30m
Multiple Airlines
Deal found 1/12$314
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/282:47 pm
FSD
-
ONT
1 stop6h 22m
American Airlines
Sat 3/75:02 pm
ONT
-
FSD
1 stop4h 56m
American Airlines
Deal found 1/13$328
This Delta deal was found by Cheapflights users on 1/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:34 pm
FSD
-
ONT
2 stops12h 16m
Delta
Thu 4/91:20 pm
ONT
-
FSD
2 stops7h 39m
Delta
Deal found 1/12$331
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:40 pm
FSD
-
ONT
1 stop17h 32m
Multiple Airlines
Tue 4/75:24 pm
ONT
-
FSD
1 stop18h 21m
Multiple Airlines
Deal found 1/12$332
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:40 pm
FSD
-
ONT
1 stop17h 32m
Multiple Airlines
Fri 4/36:15 am
ONT
-
FSD
1 stop6h 46m
Multiple Airlines
Deal found 1/12$333
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:40 pm
FSD
-
ONT
1 stop6h 23m
Multiple Airlines
Wed 4/86:15 am
ONT
-
FSD
1 stop5h 30m
Multiple Airlines
Deal found 1/12$335
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:40 pm
FSD
-
ONT
1 stop17h 32m
Multiple Airlines
Thu 4/95:24 pm
ONT
-
FSD
1 stop24h 39m
Multiple Airlines
Deal found 1/12$337

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls 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 January 14, 2026.
Use the filters below to find and compare flights from Sioux Falls to Ontario that are best for you.

Fly from

Sioux Falls

Fly to

Ontario

Route

Depart

Return

Price

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 3/30

8:55 pm-11:59 pm

1 stop29h 04m

Ontario

Thu 4/9

10:12 pm-8:05 pm

2 stops19h 53m

$347

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 3/30

8:55 pm-11:59 pm

1 stop29h 04m

Ontario

Mon 4/6

6:00 am-8:05 pm

1 stop12h 05m

$352

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Wed 4/22

6:00 am-12:14 pm

2 stops8h 14m

Ontario

Tue 4/28

7:00 am-5:44 pm

1 stop8h 44m

$356

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 3/20

5:21 pm-11:59 pm

1 stop8h 38m

Ontario

Tue 3/24

5:02 pm-11:58 pm

1 stop4h 56m

$356

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 3/30

4:57 pm-8:36 pm

1 stop5h 39m

Ontario

Wed 4/8

1:34 pm-8:30 pm

1 stop4h 56m

$360

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Wed 1/28

5:00 am-12:16 pm

2 stops9h 16m

Ontario

Sun 2/1

12:41 pm-11:10 pm

1 stop8h 29m

$364

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 3/30

4:57 pm-8:36 pm

1 stop5h 39m

Ontario

Thu 4/9

1:34 pm-8:30 pm

1 stop4h 56m

$369

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Sat 1/24

9:00 am-5:51 pm

2 stops10h 51m

Ontario

Sat 2/14

1:45 pm-8:39 pm

1 stop4h 54m

$412

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 1/27

9:00 am-12:47 pm

1 stop5h 47m

Ontario

Sat 1/31

1:24 pm-8:24 pm

1 stop5h 00m

$419

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 4/3

9:00 pm-11:59 pm

1 stop4h 59m

Ontario

Mon 4/6

6:00 am-8:05 pm

1 stop12h 05m

$420

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 18 results
1
2

Compare providers for flights from Sioux Falls 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 Sioux Falls to Ontario in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 Sioux Falls-Ontario flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Sioux Falls-Ontario flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Sioux Falls-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-Ontario flights, Cheapflights users trust CheapOair the most. CheapOair 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 Sioux Falls-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 Sioux Falls to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sioux Falls 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 Sioux Falls to Ontario

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

Currently, July is the cheapest month in which you can book a flight from Sioux Falls to Ontario (average of $91). Flying from Sioux Falls to Ontario in December is currently the most expensive (average of $258). 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.

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 January 14, 2026.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Sioux Falls 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.
United Airlines
7.4
Good
9,163 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,163 reviews
United Airlines
7.4
Good
9,163 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
11,129 reviews
United Airlines
7.4
Good
9,163 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

  • How long is the flight from Sioux Falls to Ontario?

    Frontier, United Airlines, and American Airlines can get you from Sioux Falls to Ontario in just under 8h 14m. Your travel time can differ by up to 20h 50m. Sioux Falls and Ontario are separated by a distance of 1295 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 Sioux Falls to Ontario round-trip?

    Our cheapest airline available from Sioux Falls to Ontario is United Airlines. Our recent data shows that you can find tickets from as low as $268 on this airline. An additional option worth looking into is American Airlines, starting at $370. United Airlines is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

  • How can I find direct flights from Sioux Falls to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Sioux Falls 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 Sioux Falls to Ontario?

    Currently, July is the cheapest month in which you can book a flight from Sioux Falls to Ontario (average of $91). Flying from Sioux Falls to Ontario in December is currently the most expensive (average of $258). 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.

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Alternative routes for Sioux Falls to Ontario

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Top 2 airlines flying from Sioux Falls to Ontario

Discover the top 2 airlines that operate flights from Sioux Falls 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$268Average$411FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$370Average$516FlexibilityNo cancel feeOn-time71%

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