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$125+ Cheap flights from Eugene to Ontario (EUG - ONT)

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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
EUG — ONT
Dec 29 — Jan 51
Mon 12/29
Mon 1/5
1 adult, Economy
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Find flight deals from Eugene to Ontario

Cheapest flights from Eugene to Ontario
Explore the most affordable flight options available from Eugene to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/26. 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 12/311:00 pmEUG - ONT
1 stop4h 11mAlaska Airlines
Mon 1/57:19 pmONT - EUG
1 stop5h 03mAlaska Airlines
Deal found 11/26$284
This Alaska Airlines deal was found by Cheapflights users on 11/26. 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.
Tue 12/305:17 amEUG - ONT
1 stop18h 42mAlaska Airlines
Mon 1/57:19 pmONT - EUG
1 stop5h 03mAlaska Airlines
Deal found 11/26$293
This Delta deal was found by Cheapflights users on 11/27. 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 12/135:29 pmEUG - ONT
1 stop5h 18mDelta
Thu 12/186:00 amONT - EUG
1 stop5h 55mDelta
Deal found 11/27$301
This Delta deal was found by Cheapflights users on 11/27. 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 12/135:29 pmEUG - ONT
1 stop5h 18mDelta
Fri 12/1912:40 pmONT - EUG
1 stop10h 31mDelta
Deal found 11/27$314
This Alaska Airlines deal was found by Cheapflights users on 11/26. 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 12/255:51 pmEUG - ONT
1 stop6h 23mAlaska Airlines
Thu 1/17:00 amONT - EUG
1 stop5h 23mAlaska Airlines
Deal found 11/26$349
This Alaska Airlines deal was found by Cheapflights users on 11/26. 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 12/247:00 amEUG - ONT
1 stop17h 14mAlaska Airlines
Wed 12/316:05 pmONT - EUG
1 stop21h 13mAlaska Airlines
Deal found 11/26$352
This United Airlines deal was found by Cheapflights users on 11/27. 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.
Sat 12/135:00 amEUG - ONT
1 stop7h 32mUnited Airlines
Sat 12/136:41 pmONT - EUG
1 stop4h 19mUnited Airlines
Deal found 11/27$353
This Delta deal was found by Cheapflights users on 11/28. 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 12/135:29 pmEUG - ONT
1 stop5h 18mDelta
Wed 12/176:00 amONT - EUG
1 stop5h 55mDelta
Deal found 11/28$375
This Kiwi.com deal was found by Cheapflights users on 11/28. 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.
Sun 12/218:56 pmEUG - ONT
1 stop20h 19mMultiple Airlines
Sun 1/46:00 amONT - EUG
1 stop7h 30mMultiple Airlines
Deal found 11/28$376
This Alaska Airlines deal was found by Cheapflights users on 11/28. 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.
Tue 12/161:13 pmEUG - ONT
1 stop5h 20mAlaska Airlines
Mon 12/227:19 pmONT - EUG
1 stop5h 03mAlaska Airlines
Deal found 11/28$393

Cheap flight deals from Eugene to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Eugene (EUG) to Ontario (ONT). 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 November 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$206
(Alaska Airlines)

One-way from

$125
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$323
Provider with most accurate pricing for Eugene-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Eugene-Ontario flights.
Search Deals
From Eugene to Ontario
Search Deals
One-way flight from Eugene to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Eugene to Ontario 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 November 29, 2025.
Use the filters below to find and compare flights from Eugene to Ontario that are best for you.

Fly from

Eugene

Fly to

Ontario

Route

Depart

Return

Price

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 1/9

5:42 am-11:56 pm

1 stop18h 14m

Ontario

Sun 1/18

6:00 am-4:54 pm

1 stop10h 54m

$206

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 1/9

3:02 pm-11:56 pm

1 stop8h 54m

Ontario

Wed 1/14

4:03 pm-9:30 pm

1 stop5h 27m

$206

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 1/30

3:02 pm-11:56 pm

1 stop8h 54m

Ontario

Sun 2/8

6:00 am-12:27 am

1 stop18h 27m

$206

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 1/13

9:00 am-3:08 pm

1 stop6h 08m

Ontario

Sat 1/17

4:03 pm-9:30 pm

1 stop5h 27m

$206

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 1/9

11:30 am-1:56 pm

1 stop26h 26m

Ontario

Tue 1/20

1:10 pm-11:12 pm

2 stops10h 02m

$212

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 1/13

6:20 am-10:38 pm

2 stops16h 18m

Ontario

Sat 1/17

3:30 pm-9:09 pm

1 stop5h 39m

$212

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 1/9

6:20 am-10:38 pm

2 stops16h 18m

Ontario

Sat 1/17

3:30 pm-9:09 pm

1 stop5h 39m

$212

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 1/13

11:30 am-10:38 pm

2 stops11h 08m

Ontario

Tue 1/20

1:10 pm-11:12 pm

2 stops10h 02m

$218

EugeneOntario

EUG - ONT

EUGONT

Eugene

Sun 1/11

6:20 am-10:38 pm

2 stops16h 18m

Ontario

Tue 1/20

1:10 pm-11:12 pm

2 stops10h 02m

$218

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 2/17

5:20 am-11:52 pm

1 stop18h 32m

Ontario

Wed 2/25

6:14 am-9:31 pm

1 stop15h 17m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/28

Showing 1-10 of 20 results
1
2

Compare providers for flights from Eugene to Ontario

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 Eugene to Ontario in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

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

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

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

Currently, August is the cheapest month in which you can book a flight from Eugene to Ontario (average of $64). Flying from Eugene to Ontario in February is currently the most expensive (average of $114). 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 EUG to ONT?

Find hourly flight availability from Eugene to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 29, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 58% on flights from Eugene to Ontario by exploring options for tickets in the afternoon.

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

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated November 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and United Airlines from Eugene to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,375 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

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
11,375 reviews
Alaska Airlines
8.0
Very good
11,375 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

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
4,255 reviews
Alaska Airlines
8.0
Very good
11,375 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

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
9,056 reviews
Alaska Airlines
8.0
Very good
11,375 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

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 Eugene to Ontario. 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 Eugene to Ontario?

    Airlines like Alaska Airlines and Delta fly from Eugene to Ontario in about 18h 14m. The time it takes to get you to your destination can typically vary by up to 8h 12m. There are 757 mi between Eugene and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

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

    United Airlines, at $212, was found to be the cheapest airline from Eugene to Ontario.Alternate airlines to your destination round-trip include Southwest and Alaska Airlines. Users have found that United Airlines is 37% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Eugene to Ontario (average of $64). Flying from Eugene to Ontario in February is currently the most expensive (average of $114). 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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Top 3 airlines flying from Eugene to Ontario

Discover the top 3 airlines that operate flights from Eugene to Ontario. 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 November 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$212Average$328FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$239Average$337FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$312Average$394FlexibilityNo cancel feeOn-time75%

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