In terms of precipitation, rainfall in Springfield, Illinois ranges from 1.8 - 4.5 inches per month. June is typically the wettest month, when rainfall can reach 4.5 in. January is typically the driest time to visit Springfield, Illinois when rainfall is around 1.8 in.

If weather is an important factor for your trip to Springfield, Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Springfield, Illinois as you normally would.

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.

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.

$393+ Flights from Ontario to Springfield, IL

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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

One-way flights from Ontario to Springfield
Search for one-way flight options from Ontario to Springfield. Find affordable one-way fares based on user searches. Data last updated December 16, 2025.

Sun 12/2112:55 pmONT - SPI

2 stops8h 30mAmerican Airlines

Deal found 12/13

$393

Sat 12/277:10 amONT - SPI

2 stops8h 34mAmerican Airlines

Deal found 12/13

$462

Find flight deals from Ontario to Springfield

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Popular in	June
Cheapest in	March
Average price	$517

Provider with most accurate pricing for Ontario-Springfield Capital flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Springfield Capital flights.

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($53 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Price

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Wed 12/24

11:59 pm-2:44 pm

2 stops12h 45m

$393

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Mon 12/22

9:53 am-11:25 pm

2 stops11h 32m

$393

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Tue 12/23

12:55 pm-11:25 pm

2 stops8h 30m

$393

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Fri 12/26

7:10 am-5:44 pm

2 stops8h 34m

$393

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Sat 12/27

7:10 am-5:44 pm

2 stops8h 34m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Compare providers for flights from Ontario to Springfield

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

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

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.

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$393+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Springfield with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Springfield

One-way flights from Ontario to SpringfieldSearch for one-way flight options from Ontario to Springfield. Find affordable one-way fares based on user searches. Data last updated December 16, 2025.

Search for one-way flight options from Ontario to Springfield. Find affordable one-way fares based on user searches. Data last updated December 16, 2025.

Find flight deals from Ontario to Springfield

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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 December.

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.

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?

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.

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

How can I find direct flights from Ontario to Springfield?

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

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

Traveling to a place near Springfield?

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One-way flights from Ontario to Springfield
Search for one-way flight options from Ontario to Springfield. Find affordable one-way fares based on user searches. Data last updated December 16, 2025.