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$349+ Cheap flights from Ontario to Springfield, IL (ONT - SPI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SPI
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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

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Cheap flight deals from Ontario to Springfield

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Springfield (SPI). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$580
(American Airlines)

One-way from

$339
(American Airlines)

Popular in

February

Cheapest in

March

Average price

$629
Provider with most accurate pricing for Ontario-Springfield Capital flight deals.
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Provider most trusted by Cheapflights users for Ontario-Springfield Capital flights.
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From Ontario to Springfield Capital
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One-way flight from Ontario to Springfield Capital
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Highest demand for flights based on searches. 5% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Springfield

Best flights from Ontario to Springfield
Discover carefully curated flight deals from Ontario to Springfield that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 amONT - SPI
2 stops9h 34mAmerican Airlines
Wed 4/156:00 amSPI - ONT
2 stops10h 49mAmerican Airlines
Deal found 10/28$583

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Springfield 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 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Ontario to Springfield that are best for you.

Fly from

Ontario

Fly to

Springfield

Route

Depart

Return

Price

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Sat 4/11

6:00 am-5:34 pm

2 stops9h 34m

Springfield Capital

Wed 4/15

6:00 am-2:49 pm

2 stops10h 49m

$583

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Wed 11/12

10:34 pm-2:32 pm

2 stops13h 58m

$349

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Wed 11/5

9:59 am-11:15 pm

2 stops11h 16m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Compare providers for flights from Ontario to Springfield

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 Ontario to Springfield in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

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

Have a flexible travel schedule? Discover the best time to fly to Springfield 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 Springfield

What is the cheapest month to book a flight from Ontario to Springfield, Illinois?

Currently, September is the cheapest month in which you can book a flight from Ontario to Springfield, Illinois (average of $71). Flying from Ontario to Springfield, Illinois in March is currently the most expensive (average of $220). 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 Springfield. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Springfield, Illinois?

    Departing from Ontario to Springfield, Illinois will take you 9h 34m. Ontario and Springfield, Illinois are separated by a distance of 1584 mi.

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

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

  • How can I find direct flights from Ontario to Springfield?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Springfield 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 Springfield, Illinois?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Springfield, Illinois (average of $71). Flying from Ontario to Springfield, Illinois in March is currently the most expensive (average of $220). 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 Springfield?

Book flights to Springfield if you plan to visit one of these locations
Lincoln

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