$263 Cheap Flights from Springfield (SPI) to Ontario (ONT)

View $263 flight on Wed, May 21, 2025Opens in a new window

Popular airlines from Springfield, IL (SPI-Abraham Lincoln Capital) to Los Angeles - Ontario Intl. Airport (ONT)

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Find available prices by choosing your travel dates.

Cheap Flights from Springfield to Ontario (SPI-ONT)

Prices were available within the past 7 days and start at $263 for one-way flights and $442 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, May 10 - Sat, May 17
SPI
Springfield
ONT
Ontario
$442 Roundtrip, found 4 days ago
$442
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, May 10 from Springfield to Ontario, returning Sat, May 17, priced at $442 found 4 days ago
American Airlines
Mon, Sep 15 - Mon, Sep 22
SPI
Springfield
ONT
Ontario
$461 Roundtrip, found 4 days ago
$461
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Sep 15 from Springfield to Ontario, returning Mon, Sep 22, priced at $461 found 4 days ago
American Airlines
Wed, Jun 11 - Sat, Jun 14
SPI
Springfield
ONT
Ontario
$491 Roundtrip, found 2 hours ago
$491
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Jun 11 from Springfield to Ontario, returning Sat, Jun 14, priced at $491 found 2 hours ago
American Airlines
Mon, Sep 15 - Mon, Sep 22
SPI
Springfield
ONT
Ontario
$507 Roundtrip, found 4 days ago
$507
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Sep 15 from Springfield to Ontario, returning Mon, Sep 22, priced at $507 found 4 days ago
American Airlines
Sat, May 10 - Tue, May 20
SPI
Springfield
ONT
Ontario
$508 Roundtrip, found 4 days ago
$508
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, May 10 from Springfield to Ontario, returning Tue, May 20, priced at $508 found 4 days ago
American Airlines
Wed, May 7 - Tue, May 20
SPI
Springfield
ONT
Ontario
$515 Roundtrip, found 4 days ago
$515
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, May 7 from Springfield to Ontario, returning Tue, May 20, priced at $515 found 4 days ago
American Airlines
Thu, Jul 24 - Wed, Aug 6
SPI
Springfield
ONT
Ontario
$519 Roundtrip, found 3 days ago
$519
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Jul 24 from Springfield to Ontario, returning Wed, Aug 6, priced at $519 found 3 days ago
American Airlines
Wed, Jun 11 - Mon, Jun 16
SPI
Springfield
ONT
Ontario
$521 Roundtrip, found 2 hours ago
$521
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Wed, Jun 11 from Springfield to Ontario, returning Mon, Jun 16, priced at $521 found 2 hours ago
American Airlines
Sat, May 10 - Wed, May 14
SPI
Springfield
ONT
Ontario
$525 Roundtrip, found 4 days ago
$525
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, May 10 from Springfield to Ontario, returning Wed, May 14, priced at $525 found 4 days ago
American Airlines
Mon, May 12 - Tue, May 20
SPI
Springfield
ONT
Ontario
$528 Roundtrip, found 4 days ago
$528
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, May 12 from Springfield to Ontario, returning Tue, May 20, priced at $528 found 4 days ago
Flights from Springfield (SPI) to Ontario (ONT)
Origin airport
Abraham Lincoln Capital
Destination airport
Los Angeles - Ontario Intl.
Roundtrip price
$442
Distance
1585 mi

Springfield to Ontario Flights

The cheapest times to fly from Springfield to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Springfield to Ontario are during the month of May. You can find some of the cheapest flights from Springfield to Ontario with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Springfield to Ontario

Sunday is one of the best days to book for cheap flights from Springfield to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Springfield to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Springfield to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $263 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Springfield to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Springfield to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Discover the latest flight deals from SPI to ONT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SPI to ONT?
The cheapest flights from SPI to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SPI to ONT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SPI to ONT. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT)?
Direct flights from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your travel details and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from SPI to ONT?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT)?
Opt for a flight from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute bookings from SPI to ONT are generally more expensive. To secure the cheapest rates, start searching for flights ahead of time. That being said, if you’re flexible with your travel plans, you may score a cheap fare right before your journey.
Is it cheaper to book a SPI to ONT flight and hotel package?
Compared with arranging hotels and flights separately, booking a SPI to ONT flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place takes the hassle out of travel planning. Just pick your flights and choose from our wide range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Abraham Lincoln Capital Airport (SPI) to Los Angeles - Ontario Intl. Airport (ONT)?
In most instances, you can cancel or reschedule your SPI to ONT flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline’s rules and fees on flight changes, or if you need further details, head to our Customer Service portal.

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*Available to One Key members.