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Eugene

$107+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EUG
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/17. 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.
Thu 12/256:38 amONT - EUG
1 stop8h 13mDelta
Thu 1/16:00 amEUG - ONT
1 stop6h 32mDelta
Deal found 12/17$259
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:05 amONT - EUG
1 stop8h 04mUnited Airlines
Wed 12/316:37 pmEUG - ONT
1 stop3h 56mUnited Airlines
Deal found 12/17$329
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:16 pmONT - EUG
1 stop20h 14mMultiple Airlines
Tue 12/309:49 pmEUG - ONT
1 stop19h 26mMultiple Airlines
Deal found 12/16$347
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:38 amONT - EUG
1 stop8h 13mDelta
Tue 12/306:00 amEUG - ONT
1 stop5h 02mDelta
Deal found 12/16$363
This Delta deal was found by Cheapflights users on 12/17. 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.
Thu 12/251:15 pmONT - EUG
2 stops7h 57mDelta
Fri 1/23:35 pmEUG - ONT
1 stop7h 14mDelta
Deal found 12/17$368
This Delta deal was found by Cheapflights users on 12/17. 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.
Thu 12/251:15 pmONT - EUG
2 stops7h 57mDelta
Wed 12/316:00 amEUG - ONT
1 stop6h 32mDelta
Deal found 12/17$404
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amONT - EUG
1 stop6h 14mUnited Airlines
Sun 1/41:10 pmEUG - ONT
1 stop7h 57mUnited Airlines
Deal found 12/16$417
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amONT - EUG
1 stop6h 14mUnited Airlines
Fri 1/26:37 pmEUG - ONT
1 stop4h 04mUnited Airlines
Deal found 12/17$433

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$206
(Alaska Airlines)

One-way from

$107
(Alaska Airlines)

Popular in

February

Cheapest in

September

Average price

$419
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. 8% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Sat 1/24

4:03 pm-9:30 pm

1 stop5h 27m

Eugene

Tue 1/27

3:02 pm-8:36 pm

1 stop5h 34m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 1/29

4:03 pm-9:30 pm

1 stop5h 27m

Eugene

Sat 1/31

3:02 pm-8:36 pm

1 stop5h 34m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 1/14

4:03 pm-9:30 pm

1 stop5h 27m

Eugene

Wed 1/28

1:36 pm-8:36 pm

1 stop7h 00m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 1/16

4:03 pm-9:30 pm

1 stop5h 27m

Eugene

Sun 1/18

3:56 pm-8:10 pm

1 stop4h 14m

$217

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Mon 1/12

5:59 pm-10:45 pm

1 stop4h 46m

Eugene

Sat 1/17

3:56 pm-8:10 pm

1 stop4h 14m

$217

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 1/15

4:03 pm-9:30 pm

1 stop5h 27m

Eugene

Sun 1/18

3:56 pm-8:10 pm

1 stop4h 14m

$217

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 1/9

11:53 am-4:54 pm

1 stop5h 01m

Eugene

Wed 1/14

3:56 pm-8:10 pm

1 stop4h 14m

$268

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 3/4

6:14 am-3:24 pm

2 stops9h 10m

$107

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 1/14

5:59 pm-10:45 pm

1 stop4h 46m

$109

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 1/29

4:03 pm-9:30 pm

1 stop5h 27m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 15 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Eugene flight deals on Cheapflights vs. eDreams >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 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-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 December 18, 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.

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 December 18, 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
11,474 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,474 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,249 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,006 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 5h 27m. Fly via Alaska Airlines to get the fastest option. There are 757 mi between Ontario and Eugene.

  • 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.

  • What are the cheapest airlines to fly from Ontario to Eugene one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $99. Users have also found prices from $124 and $155 on United Airlines and Southwest, respectively.

  • 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

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$178Average$281FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$180Average$250FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$183Average$367FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$236Average$359FlexibilityNo cancel feeOn-time75%

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