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 month to fly from Ontario to Springfield, Illinois?

March is one of the best times of the year to fly to Springfield, Illinois from Ontario. Prices for March average $507 per person but you can even find prices for as low as $330. The most expensive prices can be found in the month of February. Opting for a March flight can save you 48% on your journey compared to booking in February

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.

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.

$278+ Flights from Ontario to Springfield, IL

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Cheap flight deals from Ontario to Springfield

Round-trip from	$508 (American Airlines)
One-way from	$278 (American Airlines)
Popular in	February
Cheapest in	March
Average price	$427

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. 7% potential increase in price ($42 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Ontario to Springfield

Cheapest flights from Ontario to Springfield
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 August 2, 2025.

Fri 8/1510:29 pmONT - SPI

2 stops12h 08mAmerican Airlines

Tue 8/191:10 pmSPI - ONT

2 stops11h 38mAmerican Airlines

Deal found 7/31

$508

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 August 2, 2025.

Fri 8/1510:29 pmONT - SPI

2 stops12h 08mAmerican Airlines

Tue 8/191:10 pmSPI - ONT

2 stops11h 38mAmerican Airlines

Deal found 7/31

$508

Last-minute flights from Ontario to Springfield
Discover last-minute flight deals from Ontario to Springfield. Data last updated August 2, 2025 and is based on user searches.

Fri 8/1510:29 pmONT - SPI

2 stops12h 08mAmerican Airlines

Tue 8/191:10 pmSPI - ONT

2 stops11h 38mAmerican Airlines

Deal found 7/31

$508

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 August 2, 2025.

Mon 10/610:09 amONT - SPI

2 stops11h 14mAmerican Airlines

Deal found 7/31

$278

Fly from

Fly to

Route

Depart

Return

Price

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Fri 8/15

10:29 pm-12:37 pm

2 stops12h 08m

Springfield Capital

Tue 8/19

1:10 pm-10:48 pm

2 stops11h 38m

$508

OntarioSpringfield

ONT - SPI

ONTSPI

Ontario

Mon 10/6

10:09 am-11:23 pm

2 stops11h 14m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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, March is the cheapest month in which you can book a flight from Ontario to Springfield, Illinois (average of $338). Flying from Ontario to Springfield, Illinois in September is currently the most expensive (average of $486). 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.

Reviews of airlines servicing Springfield

Read reviews from past customers who have flown American Airlines from Ontario to Springfield. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

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, March is the cheapest month in which you can book a flight from Ontario to Springfield, Illinois (average of $338). Flying from Ontario to Springfield, Illinois in September is currently the most expensive (average of $486). 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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$278+ 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 10/6. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Springfield

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 August 2, 2025.

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 August 2, 2025.

Cheapflights Fare Finder

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

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?

Reviews of airlines servicing Springfield

Read reviews from past customers who have flown American Airlines from Ontario to Springfield. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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Cheapest flights from Ontario to Springfield
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 August 2, 2025.