$120+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ONT
Sep 22 — Sep 291
Round-trip
1 adult, Economy
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Find cheap flights from Sioux Falls to Ontario with Cheapflights
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Sioux Falls to Ontario
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Cheapest flights from Sioux Falls to OntarioExplore 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 August 23, 2026.
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 August 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/258:52 pm -
1 stop15h 38m
Thu 10/18:24 pm -
1 stop12h 36m
Deal found 8/21![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/118:52 pm -
1 stop15h 38m
Mon 9/1411:45 am -
1 stop6h 22m
Deal found 8/20![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 8/20. 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 9/148:52 pm -
1 stop4h 55m
Mon 9/216:15 am -
1 stop11h 52m
Deal found 8/20![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 10/28:52 pm -
1 stop15h 38m
Mon 10/58:00 am -
2 stops26h 48m
Deal found 8/21![Multiple Airlines logo]()
$274
This Expedia deal was found by Cheapflights users on 8/22. 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.
Mon 9/78:56 pm -
1 stop15h 08m
Fri 9/116:15 am -
1 stop11h 52m
Deal found 8/22![Frontier logo]()
$290
This American Airlines deal was found by Cheapflights users on 8/23. 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 9/235:59 pm -
1 stop6h 38m
Sat 9/2610:25 am -
1 stop8h 20m
Deal found 8/23![American Airlines logo]()
$321
Best flights from Sioux Falls to OntarioDiscover carefully curated flight deals from Sioux Falls to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
Discover carefully curated flight deals from Sioux Falls to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
This Frontier deal was found by Cheapflights users on 8/22. 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.
Fri 9/118:52 pm -
1 stop4h 55m
Mon 9/146:15 am -
1 stop11h 52m
Deal found 8/22![Frontier logo]()
$265
This Delta deal was found by Cheapflights users on 8/22. 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.
Wed 10/285:10 am -
2 stops14h 02m
Sun 11/11:35 pm -
2 stops7h 47m
Deal found 8/22![Delta logo]()
$340
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 10/279:32 am -
2 stops12h 43m
Sun 11/11:29 pm -
1 stop4h 35m
Deal found 8/19![United Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 8/23. 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.
Thu 9/105:30 am -
1 stop7h 35m
Mon 9/146:00 pm -
2 stops14h 19m
Deal found 8/23![Delta logo]()
$461
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 9/165:05 pm -
1 stop5h 48m
Mon 10/51:24 pm -
1 stop4h 56m
Deal found 8/19![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Thu 9/109:35 am -
1 stop5h 15m
Mon 9/145:00 am -
1 stop16h 44m
Deal found 8/23![United Airlines logo]()
$483
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Thu 12/249:00 am -
1 stop14h 00m
Thu 12/311:38 pm -
1 stop4h 37m
Deal found 8/20![United Airlines logo]()
$492
Last-minute flights from Sioux Falls to OntarioDiscover last-minute flight deals from Sioux Falls to Ontario. Data last updated August 23, 2026 and is based on user searches.
Discover last-minute flight deals from Sioux Falls to Ontario. Data last updated August 23, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/23. 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.
Fri 8/288:56 pm -
1 stop4h 54m
Mon 8/316:00 am -
1 stop12h 01m
Deal found 8/23![Frontier logo]()
$360
This Expedia deal was found by Cheapflights users on 8/22. 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.
Mon 9/78:56 pm -
1 stop15h 08m
Fri 9/116:15 am -
1 stop11h 52m
Deal found 8/22![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/118:52 pm -
1 stop15h 38m
Mon 9/1411:45 am -
1 stop6h 22m
Deal found 8/20![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 8/20. 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 9/148:52 pm -
1 stop4h 55m
Mon 9/216:15 am -
1 stop11h 52m
Deal found 8/20![Frontier logo]()
$240
This American Airlines deal was found by Cheapflights users on 8/23. 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 9/235:59 pm -
1 stop6h 38m
Sat 9/2610:25 am -
1 stop8h 20m
Deal found 8/23![American Airlines logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Thu 9/2410:02 pm -
1 stop15h 20m
Mon 9/286:15 am -
1 stop11h 52m
Deal found 8/18![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/258:52 pm -
1 stop15h 38m
Thu 10/18:24 pm -
1 stop12h 36m
Deal found 8/21![Multiple Airlines logo]()
$224
One-way flights from Sioux Falls to OntarioSearch for one-way flight options from Sioux Falls to Ontario. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
Search for one-way flight options from Sioux Falls to Ontario. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
This Frontier deal was found by Cheapflights users on 8/21. 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.
Fri 9/118:52 pm -
1 stop4h 55m
Deal found 8/21![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 8/21. 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.
Fri 8/288:56 pm -
1 stop4h 54m
Deal found 8/21![Frontier logo]()
$170
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/117:47 am -
2 stops14h 14m
Deal found 8/21![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 12/169:14 am -
1 stop5h 19m
Deal found 8/20![United Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 8/22. 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.
Fri 9/111:05 pm -
2 stops10h 59m
Deal found 8/22![Delta logo]()
$365
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Sun 8/309:35 am -
1 stop5h 15m
Deal found 8/18![United Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 8/21. 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 8/289:35 am -
2 stops10h 36m
Deal found 8/21![United Airlines logo]()
$431
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 August 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $224 (Kiwi.com) |
One-way from | $120 (Frontier) |
Popular in | October |
Cheapest in | August |
Average price | $350 |
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 7,457,451 searches. Data last updated August 23, 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
Cheapest round-trip
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Fri 9/11
8:52 pm-11:47 pm
1 stop4h 55m
Ontario
Mon 9/14
6:15 am-8:07 pm
1 stop11h 52m
$265
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Wed 10/28
5:10 am-5:12 pm
2 stops14h 02m
Ontario
Sun 11/1
1:35 pm-11:22 pm
2 stops7h 47m
$340
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Tue 10/27
9:32 am-8:15 pm
2 stops12h 43m
Ontario
Sun 11/1
1:29 pm-8:04 pm
1 stop4h 35m
$411
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Thu 9/10
5:30 am-11:05 am
1 stop7h 35m
Ontario
Mon 9/14
6:00 pm-10:19 am
2 stops14h 19m
$461
Quickest round-trip
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Wed 9/16
5:05 pm-8:53 pm
1 stop5h 48m
Ontario
Mon 10/5
1:24 pm-8:20 pm
1 stop4h 56m
$464
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Thu 9/10
9:35 am-12:50 pm
1 stop5h 15m
Ontario
Mon 9/14
5:00 am-11:44 pm
1 stop16h 44m
$483
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Thu 12/24
9:00 am-9:00 pm
1 stop14h 00m
Ontario
Thu 12/31
1:38 pm-8:15 pm
1 stop4h 37m
$492
Cheapest one-way
Quickest one-way
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Fri 8/28
8:56 pm-11:50 pm
1 stop4h 54m
$170
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Wed 12/16
5:05 am-12:10 pm
2 stops9h 05m
$334
Sioux FallsOntario
FSD Sioux Falls Joe Foss Field - ONT Ontario
FSDONT
Sioux Falls Joe Foss Field
Fri 9/11
7:47 am-8:01 pm
2 stops14h 14m
$334
Showing 1-10 of 14 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
FSD-ONT
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’s the top layover airport for flights from Sioux Falls to Ontario?
Share of 1-stop round-trip flights from Sioux Falls to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Sioux Falls to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Sioux Falls to Ontario?
Average round-trip fare for 1-stop flights from Sioux Falls to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $424.
What’s the fastest layover option from Sioux Falls to Ontario?
Shortest average travel time for 1-stop one-way flights from Sioux Falls to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 5h 26m.
Which airport typically offers the quickest layover for flights from Sioux Falls to Ontario?
Average layover duration for 1-stop one-way flights from Sioux Falls to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 29m.
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 August 23, 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.
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentJonathan,Jun 2024
FSD - ORD
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentJonathan,Jun 2024
FSD - ORD
Overall
7.4
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Entertainment
7.1
Reviews
1 / 20
8.0
ExcellentJonathan,Jun 2024
FSD - ORD
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.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 23, 2026.
Sioux Falls and Ontario flights
Browse other Sioux Falls and Ontario flight options. Last updated on August 23, 2026.
Other flights from Sioux Falls
Browse through other flights departing from Sioux Falls. Flights are based on user searches made on Cheapflights and were last updated on August 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated August 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$465 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$362 | Average$537 | FlexibilityNo cancel fee | On-time71% |