How long is the flight from Sioux City to Ontario?

United Airlines can get you from Sioux City to Ontario in just under 16h 54m. Your travel time can differ by up to . Airlines will cover a distance of 1282 mi.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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

When flying from Sioux City to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Sioux City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Ontario flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Sioux City-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$402+ Cheap Flights from Sioux City to Ontario

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Cheap flight deals from Sioux City to Ontario

Cheapest

Best

Last-minute

One-way

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 November 5, 2026.

Thu 12/106:44 pm -

1 stop19h 50m

Sun 12/135:00 am -

2 stops11h 05m

Deal found 11/3

$557

Thu 12/176:46 pm -

1 stop28h 14m

Wed 1/62:00 pm -

2 stops7h 44m

Deal found 11/3

$632

Thu 12/176:46 pm -

1 stop28h 14m

Tue 1/59:45 am -

2 stops35h 59m

Deal found 11/4

$783

One-way flights from Sioux City to Ontario
Search for one-way flight options from Sioux City to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.

Wed 12/165:00 am -

2 stops12h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/2

$402

Thu 11/196:00 am -

2 stops16h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$439

Thu 12/176:46 pm -

2 stops29h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/2

$468

Sat 11/286:45 pm -

1 stop28h 06m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/4

$591

Find flight deals from Sioux City to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$557 (United Airlines)
One-way from	$402 (United Airlines)
Popular in	November
Cheapest in	August
Average price	$661

Provider with most accurate pricing for Sioux City Sioux Gateway-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Ontario flights.

Search Deals

From Sioux City Sioux Gateway to Ontario

Search Deals

One-way flight from Sioux City Sioux Gateway to Ontario

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($60 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Sioux CityOntario

SUX Sioux City Sioux Gateway - ONT Ontario

SUXONT

Sioux City Sioux Gateway

Wed 12/16

5:00 am-3:35 pm

2 stops12h 35m

Ontario

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$402

Sioux CityOntario

SUX Sioux City Sioux Gateway - ONT Ontario

SUXONT

Sioux City Sioux Gateway

Thu 12/17

6:46 pm-10:11 pm

2 stops29h 25m

Ontario

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$468

Sioux CityOntario

SUX Sioux City Sioux Gateway - ONT Ontario

SUXONT

Sioux City Sioux Gateway

Thu 11/19

6:45 pm-12:30 pm

1 stop19h 45m

Ontario

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$556

Sioux CityOntario

SUX Sioux City Sioux Gateway - ONT Ontario

SUXONT

Sioux City Sioux Gateway

Thu 12/10

6:44 pm-9:38 am

2 stops16h 54m

Ontario

Sun 12/13

5:00 am-6:05 pm

2 stops11h 05m

$562

Sioux CityOntario

SUX Sioux City Sioux Gateway - ONT Ontario

SUXONT

Sioux City Sioux Gateway

Sat 11/28

6:45 pm-8:51 pm

1 stop28h 06m

Ontario

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$591

Sioux CityOntario

SUX Sioux City Sioux Gateway - ONT Ontario

SUXONT

Sioux City Sioux Gateway

Thu 12/17

6:46 pm-9:00 pm

1 stop28h 14m

Ontario

Wed 1/6

2:00 pm-11:44 pm

2 stops7h 44m

$632

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Sorted by cheapest first

Compare providers for flights from Sioux City to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux City to Ontario in November.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Sioux City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Sioux City-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

SUX-ONT

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.

Related info for your journey

How long is the flight from Sioux City to Ontario?
United Airlines can get you from Sioux City to Ontario in just under 16h 54m. Your travel time can differ by up to . Airlines will cover a distance of 1282 mi.
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.

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$402+ Cheap flights from Sioux City to Ontario (SUX - ONT)

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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sioux City to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Sioux City to Ontario

Cheapest flights from Sioux City to OntarioExplore 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 November 5, 2026.

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 November 5, 2026.

Best flights from Sioux City to OntarioDiscover carefully curated flight deals from Sioux City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Discover carefully curated flight deals from Sioux City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Last-minute flights from Sioux City to OntarioDiscover last-minute flight deals from Sioux City to Ontario. Data last updated November 5, 2026 and is based on user searches.

Discover last-minute flight deals from Sioux City to Ontario. Data last updated November 5, 2026 and is based on user searches.

One-way flights from Sioux City to OntarioSearch for one-way flight options from Sioux City to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.

Search for one-way flight options from Sioux City to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.

Find flight deals from Sioux City to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Compare providers for flights from Sioux City to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux City to Ontario in November.

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.

Related info for your journey

How long is the flight from Sioux City to Ontario?

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

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

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

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 Sioux City to Ontario

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

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Sioux City to Ontario by cabin class

Find flights from Sioux City to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ontario

Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.

Sioux City and Ontario flights

Browse other Sioux City and Ontario flight options. Last updated on November 5, 2026.

Other flights from Sioux City

Browse through other flights departing from Sioux City. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.

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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 November 5, 2026.

Best flights from Sioux City to Ontario
Discover carefully curated flight deals from Sioux City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Last-minute flights from Sioux City to Ontario
Discover last-minute flight deals from Sioux City to Ontario. Data last updated November 5, 2026 and is based on user searches.

One-way flights from Sioux City to Ontario
Search for one-way flight options from Sioux City to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.