HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

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

SUX — ONT
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sioux City to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Sioux City to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 3, 2025.

Popular in

March

Cheapest in

January

Average price

$473
Highest demand for flights based on searches. 20% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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

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

Currently, August is the cheapest month in which you can book a flight from Sioux City to Ontario (average of $246). Flying from Sioux City to Ontario in March is currently the most expensive (average of $328). 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.

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.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Sioux City to Ontario (average of $246). Flying from Sioux City to Ontario in March is currently the most expensive (average of $328). 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

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.
Omaha to Las Vegas flights
Des Moines to Las Vegas flights
Omaha to San Francisco flights
Omaha to Los Angeles flights
Omaha to San Diego flights
Cedar Rapids to Burbank flights
Omaha to Burbank flights
Des Moines to San Francisco flights
Des Moines to Los Angeles flights
Cedar Rapids to Las Vegas flights
Cedar Rapids to Los Angeles flights
Omaha to Ontario flights
Cedar Rapids to Ontario flights
Cedar Rapids to Santa Ana flights
Cedar Rapids to San Francisco flights
Moline to San Jose flights
Cedar Rapids to San Diego flights
Omaha to Sacramento flights
Omaha to Santa Ana flights
Des Moines to San Diego flights
Moline to Las Vegas flights
Moline to San Francisco flights
Moline to Ontario flights
Des Moines to Ontario flights
Moline to Los Angeles flights
Des Moines to San Jose flights
Cedar Rapids to Reno flights
Des Moines to Palm Springs flights
Des Moines to Reno flights
Omaha to Reno flights
Cedar Rapids to Sacramento flights
Des Moines to Burbank flights
Moline to San Diego flights
Des Moines to Santa Ana flights
Omaha to Long Beach flights
Des Moines to Sacramento flights
Omaha to Palm Springs flights
Moline to Sacramento flights
Cedar Rapids to San Jose flights
Moline to Palm Springs flights
Cedar Rapids to Medford flights
Cedar Rapids to Fresno flights
Moline to Santa Ana flights
Omaha to Monterey flights
Des Moines to Fresno flights
Des Moines to Oakland flights
Des Moines to Santa Barbara flights
Omaha to Fresno flights
Omaha to Oakland flights
Cedar Rapids to Palm Springs flights

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.