HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Eugene

$104+ Cheap flights from Ontario to Eugene (ONT - EUG)

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EUG
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Eugene 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 Eugene

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Eugene (EUG). 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$193
(lastminute.com)

One-way from

$123
(Cheapflightsfares)

Popular in

February

Cheapest in

September

Average price

$308
Provider with most accurate pricing for Ontario-Eugene flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Eugene flights.
Search Deals
From Ontario to Eugene
Search Deals
One-way flight from Ontario to Eugene
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Ontario to Eugene

Cheapest flights from Ontario to Eugene
Explore the most affordable flight options available from Ontario to Eugene. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This lastminute.com deal was found by Cheapflights users on 10/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:11 pmONT - EUG
1 stop6h 12mHawaiian Airlines
Mon 11/105:45 pmEUG - ONT
1 stop5h 47mHawaiian Airlines
Deal found 10/15$193
This Cheapflightsfares deal was found by Cheapflights users on 10/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:11 pmONT - EUG
1 stop4h 59mAlaska Airlines
Mon 11/105:45 pmEUG - ONT
1 stop5h 47mAlaska Airlines
Deal found 10/14$204
This Hawaiian Airlines deal was found by Cheapflights users on 10/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:13 pmONT - EUG
1 stop9h 17mHawaiian Airlines
Sun 12/75:45 pmEUG - ONT
1 stop5h 44mHawaiian Airlines
Deal found 10/14$206
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:50 pmONT - EUG
1 stop5h 24mDelta
Mon 11/105:29 pmEUG - ONT
1 stop17h 39mDelta
Deal found 10/14$207
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/81:15 pmONT - EUG
2 stops9h 59mDelta
Tue 11/115:29 pmEUG - ONT
1 stop5h 26mDelta
Deal found 10/14$212
This Cheapflightsfares deal was found by Cheapflights users on 10/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:13 pmONT - EUG
1 stop4h 55mAlaska Airlines
Sun 12/75:45 pmEUG - ONT
1 stop5h 44mAlaska Airlines
Deal found 10/16$224
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amONT - EUG
1 stop15h 10mAlaska Airlines
Wed 11/198:41 amEUG - ONT
1 stop12h 12mAlaska Airlines
Deal found 10/15$226
This Alaska Airlines deal was found by Cheapflights users on 10/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:00 amONT - EUG
1 stop15h 10mAlaska Airlines
Fri 11/145:45 pmEUG - ONT
1 stop27h 08mAlaska Airlines
Deal found 10/13$227
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:00 amONT - EUG
1 stop15h 10mAlaska Airlines
Sat 11/226:01 pmEUG - ONT
1 stop5h 58mAlaska Airlines
Deal found 10/15$235
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:11 pmONT - EUG
1 stop6h 12mAlaska Airlines
Sun 11/98:41 amEUG - ONT
1 stop26h 24mAlaska Airlines
Deal found 10/15$244
This Cheapflightsfares deal was found by Cheapflights users on 10/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:03 pmONT - EUG
1 stop4h 52mAlaska Airlines
Tue 11/115:20 amEUG - ONT
1 stop4h 38mAlaska Airlines
Deal found 10/13$246

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Eugene 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 October 16, 2025.
Use the filters below to find and compare flights from Ontario to Eugene that are best for you.

Fly from

Ontario

Fly to

Eugene

Route

Depart

Return

Price

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 12/4

7:33 pm-12:23 am

1 stop4h 50m

Eugene

Sun 12/7

5:45 pm-11:29 pm

1 stop5h 44m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 11/14

6:11 pm-12:23 am

1 stop6h 12m

Eugene

Mon 11/17

8:41 am-3:17 pm

1 stop6h 36m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 11/12

6:00 am-9:10 pm

1 stop15h 10m

Eugene

Mon 11/17

5:45 pm-3:17 pm

1 stop21h 32m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Sat 11/8

5:50 pm-11:14 pm

1 stop5h 24m

Eugene

Mon 11/10

5:29 pm-11:08 am

1 stop17h 39m

$207

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Sat 11/8

5:50 pm-11:14 pm

1 stop5h 24m

Eugene

Tue 11/11

5:29 pm-10:55 pm

1 stop5h 26m

$207

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 12/4

6:40 am-3:49 pm

1 stop9h 09m

Eugene

Sun 12/7

11:24 am-11:58 pm

2 stops12h 34m

$212

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 11/12

6:00 am-9:10 pm

1 stop15h 10m

Eugene

Wed 11/19

8:41 am-8:53 pm

1 stop12h 12m

$226

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 11/6

6:11 pm-12:23 am

1 stop6h 12m

Eugene

Sun 11/9

8:41 am-11:05 am

1 stop26h 24m

$244

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Mon 11/10

6:00 am-9:10 pm

1 stop15h 10m

Eugene

Fri 11/14

5:45 pm-8:53 pm

1 stop27h 08m

$246

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 11/13

6:00 am-2:12 pm

1 stop8h 12m

$104

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 19 results
1
2

Compare providers for flights from Ontario to Eugene

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 Eugene in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*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-Eugene flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Eugene flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Eugene flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Eugene 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-Eugene 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 Eugene

Have a flexible travel schedule? Discover the best time to fly to Eugene 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 Eugene

What is the cheapest month to book a flight from Ontario to Eugene?

Currently, May is the cheapest month in which you can book a flight from Ontario to Eugene (average of $69). Flying from Ontario to Eugene in June is currently the most expensive (average of $116). 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.

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

Find hourly flight availability from Ontario to Eugene. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s typically best to fly out from Ontario to Eugene in the evening. Doing so could potentially save you 10% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Ontario to Eugene?

Reviews of airlines servicing Eugene

Get insights into the airlines that provide service to Eugene. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Eugene. Reviews last updated October 16, 2025.
Read through reviews of airlines operating flights from Ontario to Eugene, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,103 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,103 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
7,980 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,982 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Eugene. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Eugene?

    There are many flights that can get you from Ontario to Eugene in 4h 50m. Fly via Hawaiian Airlines, Alaska Airlines, or Delta to get the fastest option. There are 757 mi between Ontario and Eugene. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Eugene round-trip?

    Delta, at $178, was found to be the cheapest airline from Ontario to Eugene.Alternate airlines to your destination round-trip include United Airlines and Southwest. These flights start at 47% lower than the current average price 3 months from now.

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

    Yes. In addition to deals on Ontario to Eugene flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Eugene?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Eugene.

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

    Yes. Cheapflights offers flight deals from Ontario to Eugene 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 Eugene?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Eugene (average of $69). Flying from Ontario to Eugene in June is currently the most expensive (average of $116). 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.

See more FAQs

Traveling to a place near Eugene?

Book flights to Eugene if you plan to visit one of these locations
Newport
Albany
Corvallis

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Eugene

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Portland flights
San Francisco to Portland flights
Ontario to Portland flights
Santa Ana to Portland flights
Burbank to Portland flights
San Diego to Portland flights
San Francisco to Eugene flights
Los Angeles to Boise flights
Oakland to Portland flights
San Jose to Portland flights
Sacramento to Portland flights
Las Vegas to Portland flights
Fresno to Portland flights
Burbank to Boise flights
Los Angeles to Redmond flights
Ontario to Boise flights
Palm Springs to Portland flights
Santa Ana to Boise flights
Los Angeles to Eugene flights
Sacramento to Boise flights
San Diego to Boise flights
Ontario to Redmond flights
Burbank to Eugene flights
Reno to Portland flights
San Francisco to Redmond flights
Las Vegas to Boise flights
San Luis Obispo to Portland flights
San Francisco to Boise flights
San Diego to Eugene flights
San Diego to Redmond flights
Burbank to Redmond flights
Long Beach to Portland flights
Santa Rosa to Portland flights
San Francisco to Medford flights
Santa Barbara to Portland flights
Ontario to Medford flights
San Jose to Medford flights
Medford to Portland flights
Los Angeles to Medford flights
Fresno to Boise flights
San Jose to Boise flights
San Jose to Eugene flights
Burbank to Medford flights
Reno to Boise flights
Santa Ana to Eugene flights
Sacramento to Eugene flights
Long Beach to Eugene flights
Oakland to Eugene flights
San Diego to Medford flights

Top 4 airlines flying from Ontario to Eugene

Discover the top 4 airlines that operate flights from Ontario to Eugene. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$178Average$281FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$180Average$250FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$183Average$386FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$227Average$296FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.