$120+ Cheap flights from Ontario (ONT) to South Dakota
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to South Dakota 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 Ontario to South Dakota
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Cheapest flights from Ontario to South DakotaExplore the most affordable flight options available from Ontario to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
Explore the most affordable flight options available from Ontario to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
This Priceline deal was found by Cheapflights users on 9/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:45 am -
1 stop6h 22m
Mon 10/58:52 pm -
1 stop4h 55m
Deal found 9/1![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 9/2. 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 9/216:15 am -
1 stop11h 52m
Mon 9/288:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$265
This Expedia deal was found by Cheapflights users on 9/1. 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 9/146:15 am -
1 stop11h 52m
Mon 10/58:52 pm -
1 stop4h 55m
Deal found 9/1![Frontier logo]()
$290
This Frontier deal was found by Cheapflights users on 9/2. 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 9/116:15 am -
1 stop11h 52m
Mon 9/148:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/178:24 pm -
2 stops21h 43m
Mon 9/218:52 pm -
1 stop15h 38m
Deal found 9/2![Frontier logo]()
$346
This American Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 9/296:15 am -
1 stop4h 51m
Sat 10/311:45 am -
1 stop7h 32m
Deal found 8/30![American Airlines logo]()
$350
This Frontier deal was found by Cheapflights users on 9/2. 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 9/76:00 am -
1 stop12h 01m
Fri 9/118:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$356
This United Airlines deal was found by Cheapflights users on 8/30. 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 10/225:00 am -
1 stop5h 55m
Sat 10/244:41 pm -
1 stop5h 17m
Deal found 8/30![United Airlines logo]()
$361
This Expedia deal was found by Cheapflights users on 8/31. 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 9/46:00 am -
1 stop12h 01m
Mon 9/78:56 pm -
1 stop15h 08m
Deal found 8/31![Frontier logo]()
$375
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/196:15 am -
1 stop4h 51m
Mon 9/2111:45 am -
1 stop7h 32m
Deal found 9/3![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 8/30. 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 10/174:29 pm -
1 stop5h 27m
Fri 10/238:05 am -
1 stop6h 09m
Deal found 8/30![American Airlines logo]()
$392
This Frontier deal was found by Cheapflights users on 9/2. 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 9/710:49 am -
1 stop7h 12m
Mon 9/148:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$395
Best flights from Ontario to South DakotaDiscover carefully curated flight deals from Ontario to South Dakota that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Ontario to South Dakota that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/196:15 am -
1 stop4h 51m
Mon 9/2111:45 am -
1 stop7h 32m
Deal found 9/3![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/169:01 am -
2 stops12h 11m
Sun 9/209:35 am -
1 stop5h 15m
Deal found 9/1![United Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 8/30. 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 10/174:29 pm -
1 stop5h 27m
Fri 10/238:05 am -
1 stop6h 09m
Deal found 8/30![American Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Sat 11/211:29 pm -
1 stop4h 35m
Tue 12/19:24 am -
1 stop5h 10m
Deal found 8/30![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 9/1. 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 9/166:15 am -
1 stop5h 24m
Sun 9/208:05 am -
1 stop6h 01m
Deal found 9/1![American Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 2/65:00 am -
1 stop6h 30m
Tue 2/92:40 pm -
1 stop6h 40m
Deal found 9/3![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/1. 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 11/49:25 am -
2 stops10h 18m
Sun 11/85:00 am -
2 stops8h 29m
Deal found 9/1![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/11:24 pm -
1 stop6h 28m
Thu 10/83:22 pm -
1 stop6h 36m
Deal found 9/2![United Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Sat 9/191:18 pm -
1 stop4h 49m
Wed 9/239:35 am -
1 stop5h 15m
Deal found 9/1![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/181:18 pm -
1 stop4h 49m
Sun 9/209:35 am -
1 stop5h 15m
Deal found 8/30![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 8/30. 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 10/75:00 am -
1 stop5h 55m
Tue 10/137:05 am -
1 stop6h 41m
Deal found 8/30![United Airlines logo]()
$469
Last-minute flights from Ontario to South DakotaDiscover last-minute flight deals from Ontario to South Dakota. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to South Dakota. Data last updated September 4, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 8/31. 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 9/46:00 am -
1 stop12h 01m
Mon 9/78:56 pm -
1 stop15h 08m
Deal found 8/31![Frontier logo]()
$375
This Frontier deal was found by Cheapflights users on 9/2. 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 9/76:00 am -
1 stop12h 01m
Fri 9/118:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$356
This Frontier deal was found by Cheapflights users on 9/2. 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 9/710:49 am -
1 stop7h 12m
Mon 9/148:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$395
This Frontier deal was found by Cheapflights users on 9/2. 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 9/116:15 am -
1 stop11h 52m
Mon 9/148:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$301
This Expedia deal was found by Cheapflights users on 8/30. 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 9/146:15 am -
1 stop11h 52m
Fri 9/188:52 pm -
1 stop15h 38m
Deal found 8/30![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/178:24 pm -
2 stops21h 43m
Mon 9/218:52 pm -
1 stop15h 38m
Deal found 9/2![Frontier logo]()
$346
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/196:15 am -
1 stop4h 51m
Mon 9/2111:45 am -
1 stop7h 32m
Deal found 9/3![American Airlines logo]()
$379
This Frontier deal was found by Cheapflights users on 9/2. 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 9/216:15 am -
1 stop11h 52m
Mon 9/288:52 pm -
1 stop4h 55m
Deal found 9/2![Frontier logo]()
$265
This Priceline deal was found by Cheapflights users on 9/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:45 am -
1 stop6h 22m
Mon 10/58:52 pm -
1 stop4h 55m
Deal found 9/1![Frontier logo]()
$240
This American Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 9/296:15 am -
1 stop4h 51m
Sat 10/311:45 am -
1 stop7h 32m
Deal found 8/30![American Airlines logo]()
$350
This American Airlines deal was found by Cheapflights users on 8/30. 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 10/174:29 pm -
1 stop5h 27m
Fri 10/238:05 am -
1 stop6h 09m
Deal found 8/30![American Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 8/30. 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 10/225:00 am -
1 stop5h 55m
Sat 10/244:41 pm -
1 stop5h 17m
Deal found 8/30![United Airlines logo]()
$361
One-way flights from Ontario to South DakotaSearch for one-way flight options from Ontario to South Dakota. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Ontario to South Dakota. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Priceline deal was found by Cheapflights users on 9/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:45 am -
1 stop6h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 9/2. 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 9/1111:45 am -
1 stop6h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 9/2. 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 9/186:15 am -
1 stop11h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 9/2. 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 9/2511:45 am -
1 stop6h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$153
This Booking.com deal was found by Cheapflights users on 9/1. 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.
Mon 9/146:15 am -
1 stop11h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/92:30 pm -
2 stops40h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 8/30. 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.
Sun 9/208:24 pm -
2 stops21h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Sun 12/2010:05 am -
1 stop10h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$251
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Sun 12/209:30 am -
2 stops10h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/105:00 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/185:00 am -
1 stop6h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/185:00 am -
1 stop6h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$524
Find flight deals from Ontario to South Dakota
Keep the following information in mind while searching for Ontario to South Dakota flight deals. Data was last updated September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $240 (Priceline) |
One-way from | $120 (Priceline) |
Popular in | November |
Cheapest in | July |
Average price | $370 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to South Dakota 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 September 4, 2026.
Use the filters below to find and compare flights from Ontario to South Dakota that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Mon 9/21
6:15 am-8:07 pm
1 stop11h 52m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$151
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Fri 9/18
6:15 am-8:07 pm
1 stop11h 52m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$151
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Wed 9/16
2:30 pm-9:15 am
2 stops40h 45m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$245
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Sun 12/20
10:05 am-9:27 pm
1 stop10h 22m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$251
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Sat 9/12
2:30 pm-9:05 am
2 stops40h 35m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$287
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Tue 9/22
5:00 am-12:39 pm
1 stop5h 39m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$329
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Thu 9/24
7:05 am-7:47 pm
1 stop10h 42m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$329
Quickest round-trip
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Sun 9/20
6:15 am-1:39 pm
1 stop5h 24m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$329
OntarioSioux Falls
ONT Ontario - FSD Sioux Falls Joe Foss Field
ONTFSD
Ontario
Wed 9/23
6:08 am-8:07 pm
2 stops11h 59m
Sioux Falls Joe Foss Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$334
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Sun 12/20
9:30 am-8:48 pm
2 stops10h 18m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$375
Showing 1-10 of 24 resultsSorted by cheapest first
Best time to book a flight from Ontario to South Dakota
Have a flexible travel schedule? Discover the best time to fly to South Dakota from Ontario with our price prediction graph.
ONT-FSD
ONT-RAP
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 Ontario to South Dakota
ONT-USSD
ONT-FSD
ONT-RAP
What is the cheapest month to book a flight from Ontario to South Dakota?
Currently, October is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $343). Flying from Ontario to South Dakota in September is currently the most expensive (average of $508). 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 South Dakota
Get insights into the airlines that provide service to South Dakota. 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 South Dakota. Reviews last updated September 4, 2026.
See what other customers who have flown with United Airlines,American Airlines, andFrontier from Ontario to South Dakota have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.7
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.7
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.7
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario to South Dakota. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to South Dakota
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to South Dakota by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to South Dakota by cabin class
Find flights from Ontario to South Dakota, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and South Dakota flights
Browse other Ontario and South Dakota flight options. Last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to South Dakota flights
Consider these flights traveling from Ontario to South Dakota.
Top 3 airlines flying from Ontario to South Dakota
Discover the top 3 airlines that operate flights from Ontario to South Dakota. 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 September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$230 | Average$295 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$258 | Average$432 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$303 | Average$417 | FlexibilityNo cancel fee | On-time71% |