$125 Cheap Flights from Eugene (EUG) to Ontario (ONT)

View $125 flight on Sat, Nov 1, 2025Opens in a new window

Popular airlines from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Eugene to Ontario (EUG-ONT)

Prices were available within the past 7 days and start at $125 for one-way flights and $197 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Oct 28 - Sun, Nov 2
EUG
Eugene
ONT
Ontario
$197 Roundtrip, found 4 days ago
$197
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Eugene to Ontario, returning Sun, Nov 2, priced at $197 found 4 days ago
Delta
Fri, Feb 6 - Tue, Feb 10
EUG
Eugene
ONT
Ontario
$200 Roundtrip, found 4 days ago
$200
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Feb 6 from Eugene to Ontario, returning Tue, Feb 10, priced at $200 found 4 days ago
Southwest Airlines
Tue, Oct 28 - Sun, Nov 2
EUG
Eugene
ONT
Ontario
$203 Roundtrip, found 4 days ago
$203
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Eugene to Ontario, returning Sun, Nov 2, priced at $203 found 4 days ago
Delta
Wed, Feb 4 - Sun, Feb 8
EUG
Eugene
ONT
Ontario
$211 Roundtrip, found 4 days ago
$211
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Feb 4 from Eugene to Ontario, returning Sun, Feb 8, priced at $211 found 4 days ago
Delta
Fri, Feb 6 - Sun, Feb 8
EUG
Eugene
ONT
Ontario
$216 Roundtrip, found 4 days ago
$216
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Feb 6 from Eugene to Ontario, returning Sun, Feb 8, priced at $216 found 4 days ago
Southwest Airlines
Tue, Oct 28 - Sun, Nov 2
EUG
Eugene
ONT
Ontario
$225 Roundtrip, found 4 days ago
$225
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Eugene to Ontario, returning Sun, Nov 2, priced at $225 found 4 days ago
Delta
Wed, Oct 8 - Wed, Oct 22
EUG
Eugene
ONT
Ontario
$227 Roundtrip, found 4 days ago
$227
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Oct 8 from Eugene to Ontario, returning Wed, Oct 22, priced at $227 found 4 days ago
United
Sat, Dec 13 - Fri, Jan 9
EUG
Eugene
ONT
Ontario
$230 Roundtrip, found 4 days ago
$230
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 13 from Eugene to Ontario, returning Fri, Jan 9, priced at $230 found 4 days ago
American Airlines
Thu, Oct 16 - Sat, Oct 18
EUG
Eugene
ONT
Ontario
$249 Roundtrip, found 14 hours ago
$249
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Thu, Oct 16 from Eugene to Ontario, returning Sat, Oct 18, priced at $249 found 14 hours ago
Hawaiian Airlines
Wed, Oct 22 - Tue, Oct 28
EUG
Eugene
ONT
Ontario
$249 Roundtrip, found 6 hours ago
$249
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Wed, Oct 22 from Eugene to Ontario, returning Tue, Oct 28, priced at $249 found 6 hours ago

Find the cheapest month to fly from Eugene (EUG) to Ontario (ONT)

August is typically the cheapest month to fly

From $171 - $426 per traveler.

Frequently asked questions

How much does a flight from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Grab a cheap one-way flight from $125 or cheap return flight from $197 from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT)?
The cheapest month to fly from EUG to ONT is October, when demand is low. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT)?
To find the cheapest airline flying from EUG to ONT, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT)?
Direct flights from Mahlon Sweet Field Airport (EUG) 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 our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EUG to ONT?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid possible delays on the Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT) route, travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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.
What airports do you fly into for Ontario from Mahlon Sweet Field Airport (EUG)?
Hop on a direct flight from Mahlon Sweet Field Airport (EUG) to Ontario and arrive at one of these hubs:

  • Los Angeles Intl. Airport (LAX)
  • John Wayne Airport (SNA)
  • Bob Hope Airport (BUR)

Is it cheaper to buy a plane ticket from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your flight from EUG to ONT just before your journey is typically more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an EUG to ONT flight and hotel package?
You'll typically save money by booking an EUG to ONT flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your ideal flights and accommodations, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Mahlon Sweet Field Airport (EUG) to Los Angeles - Ontario Intl. Airport (ONT)?
If you reserved your EUG to ONT flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Eugene
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$197
Distance
757 mi
Average flight time
4 hours 49 mins

Book with confidence

Book with confidence

Eugene to Ontario Flights

The cheapest times to fly from Eugene 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 Eugene to Ontario are during the month of October. You can find some of the cheapest flights from Eugene to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Eugene to Ontario

Sunday is one of the best days to book for cheap flights from Eugene 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 Eugene 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 Eugene to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $125 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 Eugene 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 Eugene 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.

 

Eugene to Ontario Flights

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*Available to One Key members.