Find flights
When to book
FAQs

Cheap flights from Sioux City to Ontario from C$ 1,130

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — YYZ
26 May — 2 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sioux City to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Sioux City to Ontario
Explore the most affordable flight options available from Sioux City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 April 2026.

Mon 4/512:55 p.m.
SUX
-
YYZ
1 stop6h 49m
United Airlines
Wed 6/512:25 p.m.
YYZ
-
SUX
1 stop6h 41m
United Airlines
Deal found 21/4C$ 1,130
Mon 8/611:32 a.m.
SUX
-
YYZ
1 stop10h 51m
United Airlines
Sat 13/610:45 a.m.
YYZ
-
SUX
1 stop25h 12m
United Airlines
Deal found 21/4C$ 1,637

Find flight deals from Sioux City to Ontario

Keep the following information in mind while searching for Sioux City to Ontario flight deals. Data was last updated 26 April 2026.

Round-trip from

C$ 1,637
United Airlines
  • United Airlines
  • 8/6-13/6
  • 2 total stops
  • 36h 03m total
  • Sioux City to Ontario
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City 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 629,999 searches. Data last updated 26 April 2026.
Use the filters below to find and compare flights from Sioux City to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Sioux CityToronto

SUX - YYZ

SUXYYZ

Sioux City Sioux Gateway

Mon 8/6

11:32 a.m.-11:23 p.m.

1 stop10h 51m

Toronto Pearson Intl

Sat 13/6

10:45 a.m.-10:57 a.m.

1 stop25h 12m

C$ 1,637

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Sorted by cheapest first

Best time to book a flight from Sioux City to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sioux City 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 Sioux City to Ontario
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly from for flights from Sioux City to Ontario?

    Sioux City Sioux Gateway (SUX) is the airport you will fly out of if you book a flight from Sioux City to Ontario. It is only a 11.2 km journey to Sioux Gateway (SUX) from Sioux City’s city centre.

  • How long is the flight from Sioux City to Region of Ontario?

    United Airlines can get you from Sioux City to Region of Ontario in just under 10h 51m. Your travel time can differ by up to . Airlines will cover a distance of 1366 km.

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

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

  • How can I find direct flights from Sioux City to Ontario?

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

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

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

See more FAQs

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Sioux City to Ontario?

Deals for Sioux City to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Sioux City to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Sioux City to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Sioux City to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Sioux City to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from Sioux City to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Sioux City to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.