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Ontario

$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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
EUG — ONT
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/3. 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.
Tue 12/305:25 amEUG - ONT
1 stop6h 28mAmerican Airlines
Tue 1/69:59 amONT - EUG
1 stop4h 32mAmerican Airlines
Deal found 12/3$243
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/3010:00 amEUG - ONT
1 stop14h 14mAlaska Airlines
Tue 1/67:19 pmONT - EUG
1 stop5h 03mAlaska Airlines
Deal found 12/2$289
This Southwest deal was found by Cheapflights users on 12/3. 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.
Tue 12/305:00 pmEUG - ONT
1 stop6h 10mSouthwest
Tue 1/63:25 pmONT - EUG
2 stops5h 50mSouthwest
Deal found 12/3$294
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/255:17 amEUG - ONT
1 stop18h 42mAlaska Airlines
Thu 1/16:00 amONT - EUG
1 stop18h 22mAlaska Airlines
Deal found 12/3$348
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/173:59 pmEUG - ONT
1 stop4h 04mAlaska Airlines
Sun 12/214:36 pmONT - EUG
1 stop7h 46mAlaska Airlines
Deal found 12/3$375
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/243:55 pmEUG - ONT
1 stop8h 04mAlaska Airlines
Thu 1/17:00 amONT - EUG
1 stop5h 23mAlaska Airlines
Deal found 12/3$394
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/303:55 pmEUG - ONT
1 stop25h 16mAlaska Airlines
Fri 1/26:00 amONT - EUG
1 stop18h 22mAlaska Airlines
Deal found 12/2$408
This Southwest deal was found by Cheapflights users on 12/3. 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.
Mon 12/225:00 pmEUG - ONT
1 stop6h 10mSouthwest
Mon 12/295:10 pmONT - EUG
1 stop5h 55mSouthwest
Deal found 12/3$423
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/216:37 pmEUG - ONT
1 stop4h 04mUnited Airlines
Thu 1/18:11 amONT - EUG
1 stop4h 03mUnited Airlines
Deal found 12/3$463
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/1810:00 amEUG - ONT
1 stop5h 42mAlaska Airlines
Wed 12/316:05 pmONT - EUG
1 stop5h 32mAlaska Airlines
Deal found 12/3$467

Find 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$155
(Delta)

One-way from

$78
(Delta)

Popular in

March

Cheapest in

October

Average price

$371
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 ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 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 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 December 4, 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

Tue 2/17

11:25 am-11:49 pm

2 stops12h 24m

Ontario

Wed 2/25

5:00 pm-11:57 pm

1 stop6h 57m

$160

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 2/6

5:20 pm-1:56 pm

1 stop20h 36m

Ontario

Tue 2/24

5:00 pm-11:57 pm

1 stop6h 57m

$161

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 2/4

5:20 pm-10:44 pm

1 stop5h 24m

Ontario

Thu 2/19

3:30 pm-10:40 am

1 stop19h 10m

$161

EugeneOntario

EUG - ONT

EUGONT

Eugene

Sun 2/8

6:10 am-10:44 pm

1 stop16h 34m

Ontario

Tue 2/24

5:00 pm-11:57 pm

1 stop6h 57m

$161

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 2/5

11:30 am-10:44 pm

1 stop11h 14m

Ontario

Tue 2/24

3:30 pm-10:55 pm

1 stop7h 25m

$161

EugeneOntario

EUG - ONT

EUGONT

Eugene

Wed 2/4

6:10 am-4:15 pm

2 stops10h 05m

Ontario

Tue 2/24

1:10 pm-10:55 pm

2 stops9h 45m

$165

EugeneOntario

EUG - ONT

EUGONT

Eugene

Thu 2/5

11:30 am-11:58 pm

2 stops12h 28m

Ontario

Wed 2/18

5:00 pm-11:57 pm

1 stop6h 57m

$166

EugeneOntario

EUG - ONT

EUGONT

Eugene

Fri 2/6

11:30 am-12:16 pm

2 stops24h 46m

Ontario

Wed 2/18

5:00 pm-11:57 pm

1 stop6h 57m

$166

EugeneOntario

EUG - ONT

EUGONT

Eugene

Tue 2/24

5:20 pm-10:37 pm

1 stop5h 17m

Ontario

Sat 2/28

3:30 pm-10:55 pm

1 stop7h 25m

$167

EugeneOntario

EUG - ONT

EUGONT

Eugene

Sun 2/8

6:10 am-10:44 pm

1 stop16h 34m

Ontario

Thu 2/19

7:30 am-10:40 am

1 stop27h 10m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 19 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 December.
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 December 4, 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.

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 December 4, 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
11,396 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

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
11,396 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

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
4,253 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

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
9,063 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Crew

8.5

Food

7.1

Comfort

7.8

Overall

8.0

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 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 Delta fly from Eugene to Ontario in about 12h 24m. The time it takes to get you to your destination can typically vary by up to . There are 757 mi between Eugene and Ontario.

  • 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.

  • 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 Alaska Airlines ($109), United Airlines ($124), and Southwest ($124).

  • 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$212Average$328FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$239Average$336FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$265Average$377FlexibilityNo cancel feeOn-time75%

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