What are the cheapest airlines flying from Ontario to Sioux Falls round-trip?

Currently priced at $242, Frontier will fly you from Ontario to Sioux Falls and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $269 and $349, respectively. Users have found that Frontier is 41% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Ontario to Sioux Falls one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $115. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Ontario to Sioux Falls for a low price.

What is the cheapest day to fly from Ontario to Sioux Falls?

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

In terms of precipitation, rainfall in Sioux Falls ranges from 0.6 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit Sioux Falls when rainfall is around 0.6 in.

If weather is an important factor for your trip to Sioux Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

What are the most popular airlines that fly from Ontario to Sioux Falls?

Consider American Airlines, Frontier or United Airlines when booking your flight. These represent the most popular airlines when flying from Ontario to Sioux Falls.

What is the cheapest day to fly round-trip from Ontario to Sioux Falls?

Flights from Ontario to Sioux Falls are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sioux Falls.

How far in advance should I book a flight from Ontario to Sioux Falls?

Users have found that booking a flight from Ontario to Sioux Falls at least 39 days early can save you up to 154% on average compared to booking a flight this week. If booking 39 days before your flight isn’t an option for you, users have found flights from Ontario to Sioux Falls for as little as $237 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $428 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to Sioux Falls?

Our data shows that February tends to be the cheapest month to fly to Sioux Falls from Ontario. Users have commonly found prices around $365 for the month, but tickets can be as low as $191. Due to multiple factors, prepare for potentially higher prices in March.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Ontario to Sioux Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$115+ Flights from Ontario to Sioux Falls

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Cheap flight deals from Ontario to Sioux Falls

Round-trip from	$242 (Justfly.com)
One-way from	$115 (FlightHub)
Popular in	December
Cheapest in	January
Average price	$448

From Ontario to Sioux Falls Joe Foss Field

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One-way flight from Ontario to Sioux Falls Joe Foss Field

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Highest demand for flights based on searches. 9% potential increase in price ($41 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Ontario to Sioux Falls

Cheapest flights from Ontario to Sioux Falls
Explore the most affordable flight options available from Ontario to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Tue 8/512:59 amONT - FSD

1 stop15h 55mFrontier

Thu 8/72:57 pmFSD - ONT

1 stop10h 53mFrontier

Deal found 6/30

$242

Thu 8/2110:50 amONT - FSD

1 stop8h 14mAmerican Airlines

Sun 8/245:15 pmFSD - ONT

1 stop8h 53mAmerican Airlines

Deal found 6/30

$269

Tue 7/81:15 pmONT - FSD

2 stops8h 29mDelta

Tue 7/156:00 amFSD - ONT

2 stops8h 14mDelta

Deal found 6/30

$335

Sat 8/21:34 pmONT - FSD

1 stop7h 32mUnited Airlines

Sat 8/95:10 pmFSD - ONT

1 stop5h 44mUnited Airlines

Deal found 6/30

$374

Best flights from Ontario to Sioux Falls
Discover carefully curated flight deals from Ontario to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Tue 8/512:59 amONT - FSD

1 stop15h 55mFrontier

Thu 8/72:57 pmFSD - ONT

1 stop10h 53mFrontier

Deal found 6/30

$242

Thu 8/2110:50 amONT - FSD

1 stop8h 14mAmerican Airlines

Sun 8/245:15 pmFSD - ONT

1 stop8h 53mAmerican Airlines

Deal found 6/30

$269

Fri 8/221:15 pmONT - FSD

1 stop7h 45mUnited Airlines

Tue 8/265:06 pmFSD - ONT

1 stop5h 37mUnited Airlines

Deal found 6/29

$349

Last-minute flights from Ontario to Sioux Falls
Discover last-minute flight deals from Ontario to Sioux Falls. Data last updated July 1, 2025 and is based on user searches.

Sun 7/66:10 amONT - FSD

2 stops12h 10mUnited Airlines

Wed 7/166:00 amFSD - ONT

2 stops8h 14mUnited Airlines

Deal found 6/30

$469

Tue 7/812:59 amONT - FSD

1 stop15h 55mFrontier

Wed 7/167:48 pmFSD - ONT

1 stop6h 02mFrontier

Deal found 6/30

$248

Tue 7/812:46 pmONT - FSD

1 stop7h 15mAmerican Airlines

Mon 7/145:11 pmFSD - ONT

1 stop8h 43mAmerican Airlines

Deal found 6/30

$331

Tue 7/81:15 pmONT - FSD

2 stops8h 29mDelta

Tue 7/156:00 amFSD - ONT

2 stops8h 14mDelta

Deal found 6/30

$335

Tue 7/157:00 amONT - FSD

1 stop8h 45mUnited Airlines

Sat 7/196:00 amFSD - ONT

2 stops8h 14mUnited Airlines

Deal found 6/30

$439

One-way flights from Ontario to Sioux Falls
Search for one-way flight options from Ontario to Sioux Falls. Find affordable one-way fares based on user searches. Data last updated July 1, 2025.

Tue 7/2212:59 amONT - FSD

1 stop15h 55mFrontier

Deal found 6/29

$115

Mon 7/211:15 pmONT - FSD

2 stops8h 29mDelta

Deal found 6/29

$170

Sun 7/131:34 pmONT - FSD

1 stop4h 46mUnited Airlines

Deal found 6/30

$260

Mon 7/2112:46 pmONT - FSD

1 stop7h 15mAmerican Airlines

Deal found 6/30

$340

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 8/5

12:59 am-6:54 pm

1 stop15h 55m

Sioux Falls Joe Foss Field

Thu 8/7

2:57 pm-11:50 pm

1 stop10h 53m

$242

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 8/21

10:50 am-9:04 pm

1 stop8h 14m

Sioux Falls Joe Foss Field

Sun 8/24

5:15 pm-12:08 am

1 stop8h 53m

$269

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 8/22

1:15 pm-11:00 pm

1 stop7h 45m

Sioux Falls Joe Foss Field

Tue 8/26

5:06 pm-8:43 pm

1 stop5h 37m

$349

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 7/22

12:59 am-6:54 pm

1 stop15h 55m

$115

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 7/21

1:15 pm-11:44 pm

2 stops8h 29m

$170

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sun 7/13

1:34 pm-8:20 pm

1 stop4h 46m

$260

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 7/21

12:46 pm-10:01 pm

1 stop7h 15m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Best time to book a flight from Ontario to Sioux Falls

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

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Sioux Falls (average of $334). Flying from Ontario to Sioux Falls in December is currently the most expensive (average of $446). 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 ONT to FSD?

A simple way to save on the total cost of your ticket is to fly from Ontario to Sioux Falls in the afternoon. If you’re flexible enough to do this you can expect to save up to 61% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Sioux Falls

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Ontario to Sioux Falls. 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.

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta

8.0

Very good

7,973 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

United Airlines

7.4

Good

8,852 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Frontier

5.9

Fair

3,289 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

What are the cheapest airlines flying from Ontario to Sioux Falls round-trip?
Currently priced at $242, Frontier will fly you from Ontario to Sioux Falls and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $269 and $349, respectively. Users have found that Frontier is 41% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Ontario to Sioux Falls one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $115. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Ontario to Sioux Falls for a low price.
Can I find deals for flights from Ontario to Sioux Falls that include hotel bookings?
Yes. In addition to deals on Ontario to Sioux Falls flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Sioux Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Sioux Falls.
Can I find deals for business class flights from Ontario to Sioux Falls?
Yes. Cheapflights offers flight deals from Ontario to Sioux Falls 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 Ontario to Sioux Falls?
Currently, September is the cheapest month in which you can book a flight from Ontario to Sioux Falls (average of $334). Flying from Ontario to Sioux Falls in December is currently the most expensive (average of $446). 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 3 airlines flying from Ontario to Sioux Falls

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$118	Average$338	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$268	Average$434	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$284	Average$426	FlexibilityNo cancel fee	On-time69%

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$115+ Cheap flights from Ontario to Sioux Falls (ONT - FSD)

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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Sioux Falls with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Sioux Falls

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Sioux Falls

Cheapest flights from Ontario to Sioux FallsExplore the most affordable flight options available from Ontario to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Ontario to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Ontario to Sioux Falls

Have a flexible travel schedule? Discover the best time to fly to Sioux Falls from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Sioux Falls

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

What is the cheapest time of day to fly from ONT to FSD?

Find hourly flight availability from Ontario to Sioux Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

Reviews of airlines servicing Sioux Falls

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Ontario to Sioux Falls. 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.

Related info for your journey

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

What are the cheapest airlines flying from Ontario to Sioux Falls round-trip?

What are the cheapest airlines to fly from Ontario to Sioux Falls one-way?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Sioux Falls

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to Sioux Falls

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Cheapest flights from Ontario to Sioux Falls
Explore the most affordable flight options available from Ontario to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.