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$105+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
EUG — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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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 August 14, 2025.

Round-trip from

$223
(Alaska Airlines)

One-way from

$105
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$330
From Eugene to Ontario
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One-way flight from Eugene to Ontario
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Highest demand for flights based on searches. 9% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 14, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
Wed 9/36:00 amEUG - ONT
1 stop4h 44mAlaska Airlines
Sat 9/63:06 pmONT - EUG
1 stop5h 58mAlaska Airlines
Deal found 8/13$223
This Delta deal was found by Cheapflights users on 8/12. 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 9/255:20 amEUG - ONT
1 stop6h 57mDelta
Tue 9/301:15 pmONT - EUG
2 stops9h 27mDelta
Deal found 8/12$228
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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.
Sat 10/185:42 pmEUG - ONT
1 stop6h 21mAlaska Airlines
Mon 10/274:11 pmONT - EUG
1 stop4h 59mAlaska Airlines
Deal found 8/12$237
This Southwest deal was found by Cheapflights users on 8/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:50 amEUG - ONT
1 stop3h 25mSouthwest
Sat 9/209:55 amONT - EUG
1 stop10h 15mSouthwest
Deal found 8/12$242
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 9/116:00 amEUG - ONT
1 stop4h 44mAlaska Airlines
Fri 9/127:40 pmONT - EUG
1 stop4h 45mAlaska Airlines
Deal found 8/12$243
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:00 amEUG - ONT
1 stop6h 13mUnited Airlines
Tue 9/236:50 pmONT - EUG
1 stop4h 00mUnited Airlines
Deal found 8/13$249
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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.
Sat 10/185:42 pmEUG - ONT
1 stop6h 21mAlaska Airlines
Sat 10/256:00 amONT - EUG
2 stops16h 50mAlaska Airlines
Deal found 8/12$265
This Delta deal was found by Cheapflights users on 8/12. 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 9/185:20 amEUG - ONT
1 stop6h 57mDelta
Sat 9/205:40 pmONT - EUG
1 stop5h 02mDelta
Deal found 8/12$268
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
Wed 10/16:00 amEUG - ONT
1 stop4h 44mAlaska Airlines
Fri 10/105:45 pmONT - EUG
1 stop17h 44mAlaska Airlines
Deal found 8/13$276
This Delta deal was found by Cheapflights users on 8/12. 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 10/811:30 amEUG - ONT
1 stop5h 40mDelta
Sun 10/126:00 amONT - EUG
1 stop4h 49mDelta
Deal found 8/12$288

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 August 14, 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

Wed 10/8

11:30 am-5:10 pm

1 stop5h 40m

Ontario

Sat 10/11

5:50 pm-11:14 pm

1 stop5h 24m

$223

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 9/10

1:36 pm-6:47 pm

1 stop5h 11m

Ontario

Mon 9/15

7:10 am-11:29 am

1 stop4h 19m

$223

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 9/3

6:00 am-10:44 am

1 stop4h 44m

Ontario

Sat 9/6

3:06 pm-9:04 pm

1 stop5h 58m

$223

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 9/25

6:00 am-12:13 pm

1 stop6h 13m

Ontario

Tue 9/30

1:53 pm-5:45 pm

1 stop3h 52m

$223

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 9/17

6:00 am-10:44 am

1 stop4h 44m

Ontario

Mon 9/22

6:00 am-12:42 pm

1 stop6h 42m

$223

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 9/25

5:20 am-12:17 pm

1 stop6h 57m

Ontario

Tue 9/30

1:15 pm-10:42 pm

2 stops9h 27m

$228

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 9/18

5:45 pm-12:03 am

1 stop6h 18m

Ontario

Sat 9/20

7:10 am-11:29 am

1 stop4h 19m

$237

EugeneOntario

EUG - ONT

EUGONT

Eugene

Mon 10/20

5:42 pm-12:03 am

1 stop6h 21m

Ontario

Mon 10/27

4:11 pm-9:10 pm

1 stop4h 59m

$237

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 10/16

11:30 am-5:10 pm

1 stop5h 40m

Ontario

Sat 10/25

5:50 pm-11:14 pm

1 stop5h 24m

$237

EugeneOntario

EUG - ONT

EUGONT

Eugene

Mon 10/20

5:42 pm-12:03 am

1 stop6h 21m

Ontario

Sat 10/25

7:10 am-11:29 am

1 stop4h 19m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 22 results
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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 $246). Flying from Eugene to Ontario in March is currently the most expensive (average of $328). 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 August 14, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 3% on flights from Eugene to Ontario by exploring options for tickets in the afternoon.

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 August 14, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,245 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,922 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

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.

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

    United Airlines, at $218, was found to be the cheapest airline from Eugene to Ontario.Alternate airlines to your destination round-trip include Alaska Airlines and Southwest. Users have found that United Airlines is 39% 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 $246). Flying from Eugene to Ontario in March is currently the most expensive (average of $328). 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

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Top 4 airlines flying from Eugene to Ontario

Discover the top 4 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$218Average$292FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$236Average$394FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$242Average$339FlexibilityNo cancel feeOn-time63%
DeltaCheapest$249Average$321FlexibilityNo cancel feeOn-timeN/A

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