What is the cheapest airline that flies from Ontario to South Dakota?

Frontier, United Airlines, and Delta are the most popular carriers operating from Ontario to South Dakota

What airlines fly to South Dakota?

United Airlines, American Airlines and Allegiant Air are the top three most popular airlines that fly to South Dakota from Ontario according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to South Dakota. Keep in mind that there are 5 different airlines that fly to South Dakota on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to South Dakota?

Prices for flights from Ontario Airport to South Dakota were last updated today.

How many operators does momondo search for flights from Ontario Airport to South Dakota?

As of September 2025, there are 3 operators available to choose from for flights from Ontario Airport to South Dakota.

How old do you have to be to fly from Ontario Airport to South Dakota?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to South Dakota.

What documentation or ID do you need to fly to South Dakota?

The travel and health documents required for your trip to South Dakota can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at South Dakota. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$158 Cheap Flights from Ontario to South Dakota in 2025/26

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Find the cheapest flights from Ontario to South Dakota

Round-trip

One-way

Last minute

Cheap round-trip flights

6:53 am - 6:33 pmONT-FSD

9h 40m1 stop

2:32 pm - 11:50 pmFSD-ONT

11h 18m1 stop

$183Frontier

Find Deal

Fri, Oct 24 - Fri, Oct 31

8:59 pm - 2:09 pmONT-FSD

15h 10m1 stop

3:19 pm - 9:35 amFSD-ONT

20h 16m1 stop

$212Frontier

Find Deal

Sun, Oct 5 - Thu, Oct 9

6:53 am - 6:33 pmONT-FSD

9h 40m1 stop

7:28 pm - 11:50 pmFSD-ONT

6h 22m1 stop

$220Frontier

Find Deal

Fri, Oct 17 - Fri, Oct 24

5:05 am - 12:51 pmONT-FSD

5h 46m1 stop

11:19 am - 6:06 pmFSD-ONT

8h 47m1 stop

$269United Airlines

Find Deal

Sat, Oct 18 - Sat, Oct 25

5:05 am - 12:51 pmONT-FSD

5h 46m1 stop

1:58 pm - 10:52 pmFSD-ONT

10h 54m2 stops

$274United Airlines

Find Deal

Sat, Oct 18 - Sat, Oct 25

6:15 am - 2:14 pmONT-FSD

5h 59m1 stop

2:50 pm - 6:35 pmFSD-ONT

5h 45m1 stop

$304American Airlines

Find Deal

Sat, Oct 18 - Sat, Oct 25

1:30 pm - 11:40 pmONT-FSD

8h 10m1 stop

5:32 pm - 11:43 pmFSD-ONT

8h 11m1 stop

$382American Airlines

Find Deal

Thu, Feb 12 - Sat, Feb 14

5:15 pm - 8:08 pmONT-RAP

25h 53m2 stops

5:58 pm - 7:47 amRAP-ONT

14h 49m1 stop

$437Multiple Airlines

Find Deal

Fri, Oct 10 - Sun, Oct 12

11:36 am - 10:56 pmONT-FSD

9h 20m1 stop

10:56 am - 9:20 pmFSD-ONT

12h 24m2 stops

$439Delta

Find Deal

Fri, Oct 24 - Fri, Oct 31

1:15 pm - 10:57 pmONT-FSD

7h 42m2 stops

10:56 am - 9:20 pmFSD-ONT

12h 24m2 stops

$444Delta

Find Deal

Fri, Oct 24 - Fri, Oct 31

Delta flights from Ontario to South Dakota

Our best Delta deals on Ontario to South Dakota flight tickets

Delta

Sep 30

ONT11:55 amOntario

9h 07m

1 stop

FSD11:02 pmSioux Falls Joe Foss Field

Oct 7

FSD5:20 amSioux Falls Joe Foss Field

8h 54m

2 stops

ONT12:14 pmOntario

$336

Find similar

Delta

Sep 30

ONT5:40 pmOntario

14h 27m

2 stops

FSD10:07 amSioux Falls Joe Foss Field

Oct 7

FSD5:20 amSioux Falls Joe Foss Field

8h 54m

2 stops

ONT12:14 pmOntario

$341

Find similar

Delta

Oct 24

ONT11:36 amOntario

9h 20m

1 stop

FSD10:56 pmSioux Falls Joe Foss Field

Oct 31

FSD10:56 amSioux Falls Joe Foss Field

12h 24m

2 stops

ONT9:20 pmOntario

$439

Find similar

Frontier flights from Ontario to South Dakota

Our best Frontier deals on Ontario to South Dakota flight tickets

Frontier

Oct 24

ONT6:53 amOntario

9h 40m

1 stop

FSD6:33 pmSioux Falls Joe Foss Field

Oct 31

FSD2:32 pmSioux Falls Joe Foss Field

11h 18m

1 stop

ONT11:50 pmOntario

$183

Find similar

Frontier

Oct 2

ONT8:59 pmOntario

15h 10m

1 stop

FSD2:09 pmSioux Falls Joe Foss Field

Oct 5

FSD2:54 pmSioux Falls Joe Foss Field

18h 59m

1 stop

ONT7:53 amOntario

$194

Find similar

Frontier

Oct 5

ONT8:59 pmOntario

15h 10m

1 stop

FSD2:09 pmSioux Falls Joe Foss Field

Oct 9

FSD3:19 pmSioux Falls Joe Foss Field

20h 16m

1 stop

ONT9:35 amOntario

$212

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 10/24

6:53 am-6:33 pm

1 stop9h 40m

Sioux Falls Joe Foss Field

Fri 10/31

2:32 pm-11:50 pm

1 stop11h 18m

$183

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sun 10/5

8:59 pm-2:09 pm

1 stop15h 10m

Sioux Falls Joe Foss Field

Thu 10/9

3:19 pm-9:35 am

1 stop20h 16m

$212

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 10/17

6:53 am-6:33 pm

1 stop9h 40m

Sioux Falls Joe Foss Field

Fri 10/24

7:28 pm-11:50 pm

1 stop6h 22m

$220

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 10/18

5:05 am-12:51 pm

1 stop5h 46m

Sioux Falls Joe Foss Field

Sat 10/25

11:19 am-6:06 pm

1 stop8h 47m

$269

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 10/18

5:05 am-12:51 pm

1 stop5h 46m

Sioux Falls Joe Foss Field

Sat 10/25

1:58 pm-10:52 pm

2 stops10h 54m

$274

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 10/18

6:15 am-2:14 pm

1 stop5h 59m

Sioux Falls Joe Foss Field

Sat 10/25

2:50 pm-6:35 pm

1 stop5h 45m

$304

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 2/12

1:30 pm-11:40 pm

1 stop8h 10m

Sioux Falls Joe Foss Field

Sat 2/14

5:32 pm-11:43 pm

1 stop8h 11m

$382

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 10/10

5:15 pm-8:08 pm

2 stops25h 53m

Rapid City

Sun 10/12

5:58 pm-7:47 am

1 stop14h 49m

$437

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 10/24

11:36 am-10:56 pm

1 stop9h 20m

Sioux Falls Joe Foss Field

Fri 10/31

10:56 am-9:20 pm

2 stops12h 24m

$439

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 10/24

1:15 pm-10:57 pm

2 stops7h 42m

Sioux Falls Joe Foss Field

Fri 10/31

10:56 am-9:20 pm

2 stops12h 24m

$444

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to South Dakota

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to South Dakota?

The cheapest day to depart from Ontario to South Dakota is on a Monday. Travelers who choose to depart for South Dakota on a Monday will often find tickets for as low as $368. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $699. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the afternoon when flights can be purchased for as low as $212. At noon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $533 per ticket.

Cheap Ontario to South Dakota flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to South Dakota

Direct flights	None

There are no direct flights from Ontario to South Dakota. There are no popular flight routes from Ontario to South Dakota.

Search flight deals

When did momondo last update prices for flights from Ontario Airport to South Dakota?
Prices for flights from Ontario Airport to South Dakota were last updated today.
How many operators does momondo search for flights from Ontario Airport to South Dakota?
As of September 2025, there are 3 operators available to choose from for flights from Ontario Airport to South Dakota.
How old do you have to be to fly from Ontario Airport to South Dakota?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to South Dakota.
What documentation or ID do you need to fly to South Dakota?
The travel and health documents required for your trip to South Dakota can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at South Dakota. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to South Dakota

Compare and see reviews for airlines that fly from Ontario to South Dakota with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $65	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to South Dakota?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to South Dakota. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to South Dakota with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to South Dakota flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to South Dakota?

momondo provides multiple filters to help you find the best flight to South Dakota from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to South Dakota right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to South Dakota flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your South Dakota trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in South Dakota

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Cheap flights from Ontario to South Dakota from $158

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to South Dakota departing on 11/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Price Alerts

Find the cheapest flights from Ontario to South Dakota

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Delta flights from Ontario to South Dakota

Our best Delta deals on Ontario to South Dakota flight tickets

Frontier flights from Ontario to South Dakota

Our best Frontier deals on Ontario to South Dakota flight tickets

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How to get the cheapest flight ticket from Ontario to South Dakota

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to South Dakota?

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the afternoon when flights can be purchased for as low as $212. At noon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $533 per ticket.

What is the cheapest airline that flies from Ontario to South Dakota?

Frontier, United Airlines, and Delta are the most popular carriers operating from Ontario to South Dakota

What airlines fly to South Dakota?

Cheap Ontario to South Dakota flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to South Dakota

Direct flights

When did momondo last update prices for flights from Ontario Airport to South Dakota?

How many operators does momondo search for flights from Ontario Airport to South Dakota?

How old do you have to be to fly from Ontario Airport to South Dakota?

What documentation or ID do you need to fly to South Dakota?

Best airlines flying from Ontario to South Dakota

Compare and see reviews for airlines that fly from Ontario to South Dakota with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to South Dakota?

Can I find flights from Ontario to South Dakota with flexible booking policies on momondo?

How can momondo help me find flights from Ontario to South Dakota?

I’m not ready to book a flight from Ontario to South Dakota right now. Can momondo alert me if prices change?

An easier way to manage your South Dakota trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Dakota

Popular cities in South Dakota

Popular flights according to clicks in the last 7 days on momondo