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Sioux City

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

ONT — SUX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Ontario to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Sioux City (SUX). 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 July 3, 2025.

Popular in

July

Cheapest in

April

Average price

$694
Highest demand for flights based on searches. 23% potential increase in price ($135 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Best time to book a flight from Ontario to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Ontario 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 Ontario to Sioux City

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Sioux City (average of $318). Flying from Ontario to Sioux City in March is currently the most expensive (average of $446). 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 Ontario to Sioux City. 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 Ontario to Sioux City that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Sioux City 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 Ontario to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Sioux City (average of $318). Flying from Ontario to Sioux City in March is currently the most expensive (average of $446). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Norfolk

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