$670+ Cheap flights from Ontario to Springfield, IL (ONT - SPI)
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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SPI
Jul 8 — Jul 151
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Springfield 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 Ontario to Springfield
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Cheapest flights from Ontario to SpringfieldExplore the most affordable flight options available from Ontario to Springfield. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 8, 2026.
Explore the most affordable flight options available from Ontario to Springfield. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 8, 2026.
This American Airlines deal was found by Cheapflights users on 6/5. 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 6/2010:22 am
ONT
- SPI
2 stops11h 45m
American Airlines
Wed 6/242:39 pm
SPI
- ONT
2 stops9h 18m
American Airlines
Deal found 6/5![American Airlines logo]()
$670
Best flights from Ontario to SpringfieldDiscover 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 June 8, 2026.
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 June 8, 2026.
This American Airlines deal was found by Cheapflights users on 6/5. 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 6/2010:22 am
ONT
- SPI
2 stops11h 45m
American Airlines
Wed 6/242:39 pm
SPI
- ONT
2 stops9h 18m
American Airlines
Deal found 6/5![American Airlines logo]()
$670
Last-minute flights from Ontario to SpringfieldDiscover last-minute flight deals from Ontario to Springfield. Data last updated June 8, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Springfield. Data last updated June 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/5. 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 6/2010:22 am
ONT
- SPI
2 stops11h 45m
American Airlines
Wed 6/242:39 pm
SPI
- ONT
2 stops9h 18m
American Airlines
Deal found 6/5![American Airlines logo]()
$670
Find 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 June 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $670 (American Airlines) |
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 June 8, 2026.
Use the filters below to find and compare flights from Ontario to Springfield that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
OntarioSpringfield
ONT - SPI
ONTSPI
Ontario
Sat 6/20
10:22 am-12:07 am
2 stops11h 45m
Springfield Capital
Wed 6/24
2:39 pm-9:57 pm
2 stops9h 18m
$670
Sorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Springfield, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Springfield, Illinois flight deals on Cheapflights vs. FlightHub >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 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 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.
ONT-SPI
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
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.
Traveling to a place near Springfield?
Book flights to Springfield if you plan to visit one of these locationsLincoln
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