ONT - FSD

$118 Find Cheap Flights from Ontario to Sioux Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Sioux Falls departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Sioux Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Sioux Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Sioux Falls, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ontario to Sioux Falls (ONT-FSD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Sioux Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Sioux Falls

Mon, Oct 20 - Thu, Oct 23
Frontier Logo
6:53 am - 6:33 pmONT-FSD
9h 40m1 stop
Frontier Logo
3:19 pm - 11:50 pmFSD-ONT
10h 31m1 stop
$216Frontier
Find Deal
Thu, Oct 23 - Mon, Oct 27
Frontier Logo
6:53 am - 2:24 pmONT-FSD
5h 31m1 stop
Frontier Logo
7:28 pm - 11:50 pmFSD-ONT
6h 22m1 stop
$222Frontier
Find Deal
Fri, Oct 24 - Mon, Oct 27
Multiple Airlines Logo
6:05 am - 6:33 pmONT-FSD
10h 28m2 stops
Multiple Airlines Logo
12:41 pm - 10:05 pmFSD-ONT
11h 24m1 stop
$250Multiple Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Multiple Airlines Logo
6:05 am - 2:47 pmONT-FSD
6h 42m1 stop
Multiple Airlines Logo
7:28 pm - 8:42 pmFSD-ONT
27h 14m2 stops
$255Multiple Airlines
Find Deal
Wed, Oct 15 - Sat, Oct 18
United Airlines Logo
5:05 am - 12:51 pmONT-FSD
5h 46m1 stop
United Airlines Logo
9:30 am - 12:51 pmFSD-ONT
5h 21m1 stop
$319United Airlines
Find Deal
Wed, Oct 15 - Sat, Oct 18
United Airlines Logo
5:05 am - 12:51 pmONT-FSD
5h 46m1 stop
United Airlines Logo
8:00 am - 5:40 pmFSD-ONT
11h 40m2 stops
$324United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
Delta Logo
6:00 am - 7:18 pmONT-FSD
11h 18m2 stops
Delta Logo
1:20 pm - 11:52 pmFSD-ONT
12h 32m2 stops
$433Delta
Find Deal
Sat, Mar 7 - Tue, Mar 10
Delta Logo
6:00 am - 7:18 pmONT-FSD
11h 18m2 stops
Delta Logo
1:20 pm - 11:52 pmFSD-ONT
12h 32m2 stops
$453Delta
Find Deal
Wed, Oct 15 - Sun, Oct 19
American Airlines Logo
10:09 am - 9:16 pmONT-FSD
9h 07m2 stops
American Airlines Logo
1:32 pm - 9:49 pmFSD-ONT
10h 17m2 stops
$643American Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
American Airlines Logo
6:15 am - 9:15 pmONT-FSD
13h 00m2 stops
American Airlines Logo
6:00 am - 4:00 pmFSD-ONT
12h 00m2 stops
$789American Airlines
Find Deal

Everything you should know

Top airlines
Frontier
Cheapest • from $216 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$216
Typical prices: $144-506
Frontier
Mon 10/20Thu 10/23
ONT - FSD • 1 stop
Cheapest one-way
$118
Multiple Airlines
Wed 10/15
ONT - FSD • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sioux Falls!
Booking Insights

KAYAK's insights & trends for Ontario to Sioux Falls flights

Get data-powered insights and trends into flights from Ontario to Sioux Falls to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Sioux Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Sioux Falls departing in October.

What’s the cheapest day of the week to fly from Ontario to Sioux Falls?

The average price of all round-trip flights from Ontario to Sioux Falls clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Sioux Falls on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Ontario to Sioux Falls. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

Good to know

Low seasonOctober
Cheapest flight$118
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Ontario to Sioux Falls

When to book flights from Ontario to Sioux Falls

Are your dates flexible? Find out the best times to travel from Ontario to Sioux Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Sioux Falls

  • What is the cheapest flight from Ontario to Sioux Falls?

    In the last 3 days, the lowest price for a flight from Ontario to Sioux Falls was $118 for a one-way ticket and $216 for a round-trip.

  • Do I need a passport to fly between Ontario and Sioux Falls?

    No, a passport isn't needed to fly from Ontario to Sioux Falls. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Sioux Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Sioux Falls?

    Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Sioux Falls, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Sioux Falls, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Sioux Falls are United Airlines and American Airlines. With an average price for the route of $454 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $408 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Ontario to Sioux Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Sioux Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Sioux Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux Falls from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Sioux Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sioux Falls with an airline and back to Ontario with another airline. Booking your flights between Ontario and FSD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Sioux Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sioux Falls from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Ontario to Sioux Falls

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Sioux Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Sioux Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8933 reviews
7.1Entertainment
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

2.0 MediocreAnonymous, Sep 2025SAN - IAH
Read more United Airlines reviews

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

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

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