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$78+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
EUG — ONT
Oct 10 — Oct 171
Fri 10/10
Fri 10/17
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 September 10, 2025.

Round-trip from

$158
(Southwest)

One-way from

$78
(Southwest)

Popular in

March

Cheapest in

February

Average price

$296
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 September 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 September 10, 2025.

This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/86:10 amEUG - ONT
1 stop4h 05mSouthwest
Tue 10/146:15 amONT - EUG
1 stop6h 30mSouthwest
Deal found 9/8$158
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/296:10 amEUG - ONT
1 stop4h 05mSouthwest
Sat 11/84:00 pmONT - EUG
1 stop3h 45mSouthwest
Deal found 9/8$195
This Southwest deal was found by Cheapflights users on 9/8. 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 10/912:20 pmEUG - ONT
1 stop4h 15mSouthwest
Tue 10/145:15 pmONT - EUG
1 stop4h 15mSouthwest
Deal found 9/8$201
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Thu 12/46:47 pmEUG - ONT
1 stop4h 02mUnited Airlines
Mon 12/81:35 pmONT - EUG
1 stop4h 10mUnited Airlines
Deal found 9/9$218
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/226:00 amEUG - ONT
1 stop6h 13mUnited Airlines
Sun 10/266:38 pmONT - EUG
1 stop4h 18mUnited Airlines
Deal found 9/10$222
This Southwest deal was found by Cheapflights users on 9/8. 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.
Fri 10/244:05 pmEUG - ONT
1 stop7h 35mSouthwest
Wed 10/295:45 amONT - EUG
2 stops7h 00mSouthwest
Deal found 9/8$230
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:30 amEUG - ONT
1 stop6h 33mAmerican Airlines
Sat 11/2212:55 pmONT - EUG
1 stop6h 48mAmerican Airlines
Deal found 9/10$233
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/75:42 pmEUG - ONT
1 stop6h 21mAlaska Airlines
Tue 10/145:45 pmONT - EUG
1 stop5h 05mAlaska Airlines
Deal found 9/9$249
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/2412:40 pmEUG - ONT
1 stop4h 13mAlaska Airlines
Tue 10/284:11 pmONT - EUG
1 stop4h 59mAlaska Airlines
Deal found 9/7$253
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/305:20 amEUG - ONT
1 stop6h 57mDelta
Sat 10/41:15 pmONT - EUG
2 stops9h 27mDelta
Deal found 9/9$254

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 September 10, 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

6:10 am-10:15 am

1 stop4h 05m

Ontario

Tue 10/14

5:45 am-12:45 pm

2 stops7h 00m

$182

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 2/18

5:30 pm-10:38 pm

1 stop5h 08m

Ontario

Sat 2/21

5:05 pm-11:52 pm

1 stop6h 47m

$203

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 12/4

6:47 pm-10:49 pm

1 stop4h 02m

Ontario

Mon 12/8

1:35 pm-5:45 pm

1 stop4h 10m

$218

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 2/17

5:30 pm-10:38 pm

1 stop5h 08m

Ontario

Thu 2/19

5:05 pm-11:52 pm

1 stop6h 47m

$225

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 10/24

4:05 pm-11:40 pm

1 stop7h 35m

Ontario

Wed 10/29

5:15 pm-9:30 pm

1 stop4h 15m

$225

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 2/18

5:30 pm-10:38 pm

1 stop5h 08m

Ontario

Thu 2/19

5:05 pm-11:52 pm

1 stop6h 47m

$225

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 10/9

12:20 pm-4:35 pm

1 stop4h 15m

Ontario

Tue 10/14

5:45 am-12:45 pm

2 stops7h 00m

$225

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 12/4

5:29 pm-10:47 pm

1 stop5h 18m

Ontario

Mon 12/8

1:20 pm-11:11 pm

2 stops9h 51m

$230

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 11/19

5:30 am-12:03 pm

1 stop6h 33m

Ontario

Sat 11/22

12:55 pm-7:43 pm

1 stop6h 48m

$233

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 10/15

12:25 pm-5:00 pm

1 stop4h 35m

$78

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 20 results
1
2

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 September 10, 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 September 10, 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
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

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
4,249 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

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
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

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 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 airports do I use to fly from Eugene to Ontario?

    If you wish to fly to Ontario from Eugene, then you need to book flights from Eugene to Ontario. There is 1 flight from Eugene (EUG) to Ontario (ONT) per day to choose from. Flights to Ontario from Eugene are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 3h 48m is how long a nonstop flight from Eugene to Ontario typically takes.

  • How long is the flight from Eugene to Ontario?

    Airlines like Southwest, Delta, and United Airlines fly from Eugene to Ontario in about 4h 02m. The time it takes to get you to your destination can typically vary by up to 1h 06m. 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 Alaska Airlines and Southwest. Users have found that United Airlines is 41% cheaper than the other options available to this destination.

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

    The cheapest airlines for a one-way flight from Eugene to Ontario are Southwest ($78), Delta ($99), and United Airlines ($102).

  • 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.

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Alternative routes for Eugene to Ontario

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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 September 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$212Average$292FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$236Average$394FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$242Average$334FlexibilityNo cancel feeOn-time63%

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