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$111+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ONT
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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Cheap 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 April 10, 2026.

This Frontier deal was found by Cheapflights users on 4/5. 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.
Mon 4/278:06 pm
FSD
-
ONT
1 stop5h 49m
Frontier
Wed 5/610:50 am
ONT
-
FSD
1 stop5h 43m
Frontier
Deal found 4/5$160
This CheapOair deal was found by Cheapflights users on 4/6. 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 5/84:07 pm
FSD
-
ONT
1 stop19h 58m
Frontier
Mon 5/116:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Deal found 4/6$171
This Frontier deal was found by Cheapflights users on 4/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:06 pm
FSD
-
ONT
1 stop5h 49m
Frontier
Fri 5/86:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Deal found 4/9$185
This CheapOair deal was found by Cheapflights users on 4/8. 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 5/154:07 pm
FSD
-
ONT
1 stop19h 58m
Frontier
Mon 5/186:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Deal found 4/8$196
This Expedia deal was found by Cheapflights users on 4/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:25 pm
FSD
-
ONT
1 stop19h 40m
Frontier
Wed 6/36:00 am
ONT
-
FSD
1 stop10h 33m
Frontier
Deal found 4/8$210
This CheapOair deal was found by Cheapflights users on 4/7. 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 5/67:18 pm
FSD
-
ONT
1 stop16h 47m
Frontier
Thu 5/2110:50 am
ONT
-
FSD
1 stop26h 50m
Frontier
Deal found 4/7$236
This Frontier deal was found by Cheapflights users on 4/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:06 pm
FSD
-
ONT
1 stop5h 49m
Frontier
Mon 5/116:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Deal found 4/9$250
This CheapOair deal was found by Cheapflights users on 4/7. 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 4/178:06 pm
FSD
-
ONT
1 stop5h 49m
Frontier
Sun 4/1912:59 am
ONT
-
FSD
1 stop16h 22m
Frontier
Deal found 4/7$262
This Frontier deal was found by Cheapflights users on 4/8. 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.
Wed 6/108:14 pm
FSD
-
ONT
1 stop5h 35m
Frontier
Fri 6/196:00 am
ONT
-
FSD
1 stop11h 19m
Frontier
Deal found 4/8$270
This American Airlines deal was found by Cheapflights users on 4/8. 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.
Wed 9/235:54 pm
FSD
-
ONT
1 stop7h 12m
American Airlines
Sat 9/264:59 pm
ONT
-
FSD
1 stop4h 53m
American Airlines
Deal found 4/8$311

Find 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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(Frontier)

One-way from

$111
(Frontier)

Popular in

April

Cheapest in

March

Average price

$611
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Ontario flights.
Search Deals
From Sioux Falls Joe Foss Field to Ontario
Search Deals
One-way flight from Sioux Falls Joe Foss Field to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 10, 2026.
Use the filters below to find and compare flights from Sioux Falls to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 4/21

5:25 am-11:36 am

1 stop8h 11m

Ontario

Sat 4/25

12:49 pm-11:40 pm

1 stop8h 51m

$399

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Wed 4/22

4:17 pm-11:44 pm

2 stops9h 27m

Ontario

Sat 4/25

12:49 pm-11:40 pm

1 stop8h 51m

$404

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 4/27

6:00 am-12:20 pm

2 stops8h 20m

Ontario

Wed 5/6

1:40 pm-11:43 pm

1 stop8h 03m

$425

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Thu 8/27

4:09 pm-11:44 pm

2 stops9h 35m

Ontario

Tue 9/1

12:00 pm-10:09 pm

1 stop8h 09m

$440

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Sat 8/29

6:00 am-12:12 pm

2 stops8h 12m

Ontario

Wed 9/2

5:00 am-12:38 pm

1 stop5h 38m

$445

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Wed 4/29

4:57 pm-8:36 pm

1 stop5h 39m

Ontario

Mon 5/4

1:40 pm-11:43 pm

1 stop8h 03m

$509
Quickest round-trip

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 7/10

5:05 pm-8:42 pm

1 stop5h 37m

Ontario

Fri 7/17

1:18 pm-8:08 pm

1 stop4h 50m

$529
Cheapest one-way

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 5/11

4:07 pm-11:49 pm

1 stop9h 42m

$111
Quickest one-way

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Sat 5/9

9:00 am-12:38 pm

1 stop5h 38m

$334

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 5/12

1:41 pm-8:54 pm

1 stop9h 13m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/7

Showing 1-10 of 16 resultsSorted by cheapest first
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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $100). Flying from Sioux Falls to Ontario in March is currently the most expensive (average of $262). 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.

How much does it cost to fly round-trip from Sioux Falls to Ontario?

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 April 10, 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
9,554 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

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
9,554 reviews
United Airlines
7.4
Good
9,554 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

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
7.1
Good
11,560 reviews
United Airlines
7.4
Good
9,554 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

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?

    Delta and United Airlines can get you from Sioux Falls to Ontario in just under 8h 11m. Your travel time can differ by up to 09m. 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 $274. United Airlines is 38% 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 $100). Flying from Sioux Falls to Ontario in March is currently the most expensive (average of $262). 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

Browse thousands of different options on Cheapflights for your next trip

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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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$268Average$415FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$274Average$537FlexibilityNo cancel feeOn-time71%

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