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 or American Airlines to get the fastest option. There are 757 mi between Ontario and Eugene. Both multi-stop and nonstop flights can be found to your destination and back.

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.

In terms of precipitation, rainfall in Eugene ranges from 0.5 - 7.8 inches per month. December is typically the wettest month, when rainfall can reach 7.8 in. July is typically the driest time to visit Eugene when rainfall is around 0.5 in.

If weather is an important factor for your trip to Eugene, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular airlines that fly from Ontario to Eugene?

Before booking your flight from Ontario to Eugene check out the most popular airlines for this route: Southwest, Alaska Airlines or Delta.

What is the cheapest time of day to fly from ONT to EUG?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Eugene as you normally would.

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.

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.

$109+ Flights from Ontario to Eugene

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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 January 2, 2026.

Wed 12/316:05 pmONT - EUG

1 stop5h 32mAlaska Airlines

Thu 1/11:00 pmEUG - ONT

1 stop4h 11mAlaska Airlines

Deal found 12/31

$903

Wed 12/316:05 pmONT - EUG

1 stop5h 32mAlaska Airlines

Fri 1/25:51 pmEUG - ONT

2 stops6h 08mAlaska Airlines

Deal found 12/31

$1,083

Best flights from Ontario to Eugene
Discover carefully curated flight deals from Ontario to Eugene that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 2, 2026.

Wed 1/214:03 pmONT - EUG

1 stop5h 27mAlaska Airlines

Tue 1/271:36 pmEUG - ONT

1 stop7h 00mAlaska Airlines

Deal found 12/31

$206

Fri 1/2312:57 pmONT - EUG

1 stop8h 04mAmerican Airlines

Sun 1/256:36 amEUG - ONT

1 stop6h 02mAmerican Airlines

Deal found 1/1

$217

Thu 2/191:10 pmONT - EUG

2 stops9h 45mDelta

Sat 2/216:07 amEUG - ONT

1 stop7h 47mDelta

Deal found 12/31

$222

Fri 1/306:00 amONT - EUG

1 stop7h 08mAlaska Airlines

Thu 2/59:00 amEUG - ONT

1 stop14h 56mAlaska Airlines

Deal found 12/30

$206

Fri 1/236:27 amONT - EUG

1 stop8h 04mAmerican Airlines

Mon 1/266:36 amEUG - ONT

1 stop5h 27mAmerican Airlines

Deal found 1/1

$217

Sat 1/241:11 pmONT - EUG

2 stops7h 58mDelta

Mon 2/26:10 amEUG - ONT

1 stop7h 46mDelta

Deal found 1/1

$223

Wed 3/44:02 pmONT - EUG

1 stop7h 56mAlaska Airlines

Sat 3/79:01 amEUG - ONT

1 stop14h 31mAlaska Airlines

Deal found 1/1

$207

Wed 1/2811:53 amONT - EUG

1 stop12h 34mAlaska Airlines

Sun 2/19:00 amEUG - ONT

1 stop25h 59mAlaska Airlines

Deal found 1/2

$207

Sat 1/173:30 pmONT - EUG

1 stop5h 39mDelta

Thu 1/226:10 amEUG - ONT

1 stop16h 41mDelta

Deal found 12/31

$233

Sat 1/173:30 pmONT - EUG

1 stop5h 39mDelta

Sat 1/2411:30 amEUG - ONT

1 stop11h 21mDelta

Deal found 12/31

$233

Wed 1/2111:53 amONT - EUG

1 stop5h 01mAlaska Airlines

Sun 1/253:56 pmEUG - ONT

1 stop4h 14mAlaska Airlines

Deal found 12/31

$217

Fri 1/235:59 pmONT - EUG

2 stops27h 31mAlaska Airlines

Sun 1/253:56 pmEUG - ONT

1 stop4h 14mAlaska Airlines

Deal found 12/30

$246

Last-minute flights from Ontario to Eugene
Discover last-minute flight deals from Ontario to Eugene. Data last updated January 2, 2026 and is based on user searches.

Wed 1/146:49 pmONT - EUG

1 stop16h 56mMultiple Airlines

Sun 1/259:52 amEUG - ONT

1 stop26h 18mMultiple Airlines

Deal found 12/31

$249

Sat 1/173:30 pmONT - EUG

1 stop5h 39mDelta

Thu 1/226:10 amEUG - ONT

1 stop16h 41mDelta

Deal found 12/31

$233

Sat 1/173:30 pmONT - EUG

1 stop5h 39mDelta

Sun 1/255:20 pmEUG - ONT

2 stops22h 55mDelta

Deal found 12/31

$248

Sun 1/181:11 pmONT - EUG

2 stops10h 01mDelta

Fri 1/235:20 pmEUG - ONT

1 stop20h 36mDelta

Deal found 12/31

$238

Sun 1/181:11 pmONT - EUG

2 stops10h 01mDelta

Wed 1/216:10 amEUG - ONT

1 stop7h 46mDelta

Deal found 12/31

$252

Sun 1/181:11 pmONT - EUG

2 stops10h 01mDelta

Sat 1/246:10 amEUG - ONT

2 stops30h 06mDelta

Deal found 12/31

$253

Wed 1/215:59 pmONT - EUG

2 stops6h 28mAlaska Airlines

Sun 1/253:56 pmEUG - ONT

1 stop4h 14mAlaska Airlines

Deal found 12/31

$255

Fri 1/2312:57 pmONT - EUG

1 stop8h 04mAmerican Airlines

Sun 1/256:36 amEUG - ONT

1 stop6h 02mAmerican Airlines

Deal found 1/1

$217

Fri 1/235:59 pmONT - EUG

2 stops27h 31mAlaska Airlines

Sun 1/253:56 pmEUG - ONT

1 stop4h 14mAlaska Airlines

Deal found 12/30

$246

Sat 1/243:30 pmONT - EUG

1 stop5h 39mDelta

Mon 2/26:10 amEUG - ONT

1 stop7h 46mDelta

Deal found 1/1

$207

Tue 1/274:03 pmONT - EUG

1 stop5h 27mAlaska Airlines

Sun 2/19:00 amEUG - ONT

1 stop25h 59mAlaska Airlines

Deal found 12/31

$206

One-way flights from Ontario to Eugene
Search for one-way flight options from Ontario to Eugene. Find affordable one-way fares based on user searches. Data last updated January 2, 2026.

Thu 1/294:03 pmONT - EUG

1 stop5h 27mAlaska Airlines

Deal found 12/30

$109

Thu 1/296:00 amONT - EUG

2 stops10h 37mDelta

Deal found 12/30

$123

Sat 2/147:00 amONT - EUG

1 stop4h 52mAlaska Airlines

Deal found 12/31

$129

Fri 2/64:03 pmONT - EUG

1 stop24h 51mAlaska Airlines

Deal found 1/1

$138

Fri 1/2311:53 amONT - EUG

1 stop5h 01mAlaska Airlines

Deal found 1/1

$140

Fri 2/271:10 pmONT - EUG

2 stops9h 45mDelta

Deal found 12/31

$158

Fri 2/207:00 amONT - EUG

1 stop5h 15mAlaska Airlines

Deal found 12/31

$161

Fri 2/277:00 amONT - EUG

1 stop5h 15mAlaska Airlines

Deal found 1/1

$162

Sun 3/15:00 pmONT - EUG

1 stop6h 59mDelta

Deal found 1/1

$163

Sun 3/16:14 amONT - EUG

2 stops6h 01mAlaska Airlines

Deal found 1/1

$168

Sat 1/317:00 amONT - EUG

2 stops14h 30mAlaska Airlines

Deal found 12/30

$177

Find flight deals from Ontario to Eugene

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$206 (Alaska Airlines)
One-way from	$109 (Alaska Airlines)
Popular in	February
Cheapest in	September
Average price	$345

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 January 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 1/21

4:03 pm-9:30 pm

1 stop5h 27m

Eugene

Tue 1/27

1:36 pm-8:36 pm

1 stop7h 00m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 1/30

6:00 am-1:08 pm

1 stop7h 08m

Eugene

Thu 2/5

9:00 am-11:56 pm

1 stop14h 56m

$206

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 3/4

4:02 pm-11:58 pm

1 stop7h 56m

Eugene

Sat 3/7

9:01 am-11:32 pm

1 stop14h 31m

$207

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 1/28

11:53 am-12:27 am

1 stop12h 34m

Eugene

Sun 2/1

9:00 am-10:59 am

1 stop25h 59m

$207

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 1/23

12:57 pm-9:01 pm

1 stop8h 04m

Eugene

Sun 1/25

6:36 am-12:38 pm

1 stop6h 02m

$217

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Fri 1/23

6:27 am-2:31 pm

1 stop8h 04m

Eugene

Mon 1/26

6:36 am-12:03 pm

1 stop5h 27m

$217

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Wed 1/21

11:53 am-4:54 pm

1 stop5h 01m

Eugene

Sun 1/25

3:56 pm-8:10 pm

1 stop4h 14m

$217

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Thu 2/19

1:10 pm-10:55 pm

2 stops9h 45m

Eugene

Sat 2/21

6:07 am-1:54 pm

1 stop7h 47m

$222

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Sat 1/24

1:11 pm-9:09 pm

2 stops7h 58m

Eugene

Mon 2/2

6:10 am-1:56 pm

1 stop7h 46m

$223

OntarioEugene

ONT - EUG

ONTEUG

Ontario

Sat 1/17

3:30 pm-9:09 pm

1 stop5h 39m

Eugene

Thu 1/22

6:10 am-10:51 pm

1 stop16h 41m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 22 results

Compare providers for flights from Ontario to Eugene

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Eugene in January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust 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.

Reviews of airlines servicing Eugene

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

11,599 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Alaska Airlines

8.0

Very good

11,599 reviews

Alaska Airlines

8.0

Very good

11,599 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Southwest

8.0

Very good

4,252 reviews

Alaska Airlines

8.0

Very good

11,599 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Delta

7.9

Good

8,021 reviews

Alaska Airlines

8.0

Very good

11,599 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

United Airlines

7.4

Good

9,134 reviews

Alaska Airlines

8.0

Very good

11,599 reviews

Reviews

1 / 20

10.0

Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

Related info for your journey

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 or American Airlines to get the fastest option. There are 757 mi between Ontario and Eugene. Both multi-stop and nonstop flights can be found to your destination and back.
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.

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Other flights to Eugene

Top 4 airlines flying from Ontario to Eugene

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$178	Average$281	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$180	Average$250	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$183	Average$367	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$197	Average$348	FlexibilityNo cancel fee	On-time75%

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$109+ 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Eugene with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Eugene

Cheapest flights from Ontario to EugeneExplore 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 January 2, 2026.

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 January 2, 2026.

Find flight deals from Ontario to Eugene

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Eugene that are best for you.

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 January.

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.

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?

Reviews of airlines servicing Eugene

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.

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?

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

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

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

How can I find direct flights from Ontario to Eugene?

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

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

Traveling to a place near Eugene?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Eugene

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Ontario to Eugene

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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 January 2, 2026.