ONT - EUG

$144 Find Cheap Flights from Ontario to Eugene - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Eugene departing on 8/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Eugene

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Eugene, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Eugene, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$302
Typical prices: $151-$422
Alaska Airlines
Tue 8/25Wed 8/26
ONT - EUG • 1 stop
Cheapest one-way
$144
Southwest
Sat 8/22
ONT - EUG • 1 stop
Top airlines
Cheapest • from $287 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Eugene. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $207 (round-trip)
Shortest trip • 3h 54m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 40% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Eugene!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Eugene (ONT-EUG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Eugene that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Eugene

Tue, Aug 25 - Wed, Aug 26
Alaska Airlines Logo
7:12 am - 12:48 pm
ONT
-
EUG
5h 36m
1 stop
Alaska Airlines Logo
4:03 pm - 8:24 pm
EUG
-
ONT
4h 21m
1 stop
$302Alaska Airlines
Tue, Sep 1 - Tue, Sep 1
Alaska Airlines Logo
7:12 am - 12:48 pm
ONT
-
EUG
5h 36m
1 stop
Alaska Airlines Logo
4:03 pm - 8:24 pm
EUG
-
ONT
4h 21m
1 stop
$309Alaska Airlines
Mon, Aug 17 - Thu, Aug 20
Alaska Airlines Logo
6:02 am - 1:01 pm
ONT
-
EUG
6h 59m
1 stop
Alaska Airlines Logo
12:40 pm - 8:24 pm
EUG
-
ONT
7h 44m
1 stop
$315Alaska Airlines
Wed, Jul 29 - Tue, Aug 4
Alaska Airlines Logo
6:02 am - 1:01 pm
ONT
-
EUG
6h 59m
1 stop
Alaska Airlines Logo
6:00 am - 1:09 pm
EUG
-
ONT
7h 09m
1 stop
$332Alaska Airlines
Wed, Jul 22 - Wed, Jul 29
Alaska Airlines Logo
5:54 pm - 11:59 pm
ONT
-
EUG
6h 05m
1 stop
Alaska Airlines Logo
1:38 pm - 11:11 pm
EUG
-
ONT
9h 33m
1 stop
$333Alaska Airlines
Tue, Jul 21 - Tue, Aug 4
Southwest Logo
8:30 am - 1:00 pm
ONT
-
EUG
4h 30m
1 stop
Southwest Logo
5:40 am - 12:40 pm
EUG
-
ONT
7h 00m
2 stops
$338Southwest
Tue, Jul 21 - Tue, Aug 4
Southwest Logo
5:30 am - 2:05 pm
ONT
-
EUG
8h 35m
2 stops
Southwest Logo
12:25 pm - 8:55 pm
EUG
-
ONT
8h 30m
2 stops
$343Southwest
Tue, Sep 29 - Thu, Oct 1
Alaska Airlines Logo
10:47 am - 3:26 pm
ONT
-
EUG
4h 39m
1 stop
Alaska Airlines Logo
4:03 pm - 8:24 pm
EUG
-
ONT
4h 21m
1 stop
$346Alaska Airlines
Mon, Aug 10 - Sat, Aug 15
Southwest Logo
4:10 pm - 9:45 pm
ONT
-
EUG
5h 35m
1 stop
Southwest Logo
11:45 am - 6:20 pm
EUG
-
ONT
6h 35m
2 stops
$351Southwest
Sat, Aug 8 - Sat, Aug 15
Alaska Airlines Logo
5:32 pm - 10:28 pm
ONT
-
EUG
4h 56m
1 stop
Alaska Airlines Logo
6:00 am - 1:09 pm
EUG
-
ONT
7h 09m
1 stop
$355Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Eugene flights

Get data-powered insights and trends into flights from Ontario to Eugene to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Eugene?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Eugene departing in August.

What is the cheapest month to fly from Ontario to Eugene?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Eugene, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Eugene is February, where tickets cost $197 (return) on average. On the other hand, the most expensive months are March and July, where the average cost of round-trip tickets is $466 and $384 respectively.

Good to know

Low seasonMarch
Cheapest flight$144
Best time to beat the crowds but there is an average 41% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Ontario to Eugene

When to book flights from Ontario to Eugene

Are your dates flexible? Find out the best times to travel from Ontario to Eugene based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Eugene

  • What are some common layovers for flights from Ontario to Eugene?

    Flights from Ontario to Eugene typically have one or two stops in various cities which are dependent on the airline you opt for. Some of these layovers include Seattle (SEA), San Francisco (SFO), Salt Lake City (SLC), Phoenix (PHX), Las Vegas (LAS), and Oakland (OAK).

  • What is the luggage allowance on flights from Ontario to Eugene with Alaska Airlines?

    The luggage allowance on flights from Ontario to Eugene with Alaska Airlines varies depending on the fare type chosen by the passenger. For the saver fare, passengers are allowed to bring one personal item and one carry-on bag for free. Checked luggage will incur a fee. For the main fare, passengers are allowed to bring one personal item, one carry-on bag, and two checked bags for free. Any additional bags will incur a fee of $100 each.

  • Which airlines offer flights from Ontario to Eugene with lower carbon emissions?

    Delta is committed to reducing its carbon emissions and has implemented several measures to achieve this goal. The airline has made significant investments in modernizing its fleet by retiring older, less fuel-efficient aircraft and replacing them with newer, more environmentally-friendly planes including for flights from Ontario to Eugene.

  • Does United Airlines allow advanced seat selection for flights from Ontario to Eugene?

    United Airlines allows advanced seat selection for flights from Ontario to Eugene. Economy and Economy Plus fares both offer advanced seat selection options. Passengers in these fare classes can select their seats at the time of booking or during the check-in process free of charge.

  • What is the cheapest flight from Ontario to Eugene?

    In the last 5 days, the lowest price for a flight from Ontario to Eugene was $144 for a one-way ticket and $287 for a round-trip.

  • Do I need a passport to fly between Ontario and Eugene?

    No

  • Which aircraft models fly most regularly from Ontario to Eugene?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Eugene?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Eugene, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Eugene, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Eugene are Southwest and Alaska Airlines. With an average price for the route of $367 and an overall rating of 7.9, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $382 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Eugene?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Eugene.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Eugene?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Eugene from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Eugene?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Eugene with an airline and back to Ontario with another airline. Booking your flights between Ontario and EUG can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Eugene?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Eugene from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ontario to Eugene

  • Pet owners looking for pet-friendly flights from Ontario (ONT) to Eugene (EUG) can book with Southwest Airlines. Southwest accepts only dogs and cats, and the animals must be at least 8 weeks old. The combined weight of the pet and carrier must not exceed 20 lb.
  • Ontario International Airport (ONT) has two terminals. Terminal 2 serves all domestic flights operated by Southwest Airlines. It has 14 gates, numbered 201 to 214. Terminal 4 handles all international and some domestic flights, including those operated by Delta, American Airlines, Alaska Airlines, and United. It has 14 gates, numbered 401 to 414.
  • American Airlines offers priority boarding for families with children under two years of age on flights from Ontario (ONT) to Eugene (EUG). The airline offers a range of in-flight entertainment options and also offers child-friendly entertainment options with a dedicated Kids Zone category that includes animated movies and games.
  • Alaska Airlines provides wheelchair assistance for passengers with reduced mobility at the airport. Passengers can request a wheelchair when booking their ticket. The airline also offers special seating accommodations on flights from Ontario (ONT) to Eugene (EUG) and arrangements may include seats with additional leg space or bulkhead seating.
  • Eugene Airport (EUG) is located about 7 miles northwest of the city center. The Lane Transit District (LTD) bus service operates various routes around Eugene, including to and from the airport. Passengers can catch the bus outside of the terminal building. The Route 95 bus runs from the airport to the downtown Eugene bus station with stops at various locations. Taxis are also available outside the terminal.

Reviews of the top 5 airlines serving from Ontario to Eugene

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Eugene. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Eugene? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12586 reviews
7.8Comfort
8.5Crew
8.1Boarding
7.0Entertainment
7.0Food
Airline reviews

Both flights were on time and without in-flight issues. Although we had to check our carry-on bags at the last minute (cabins were full, no more room), our bags were on the baggage carousel very quickly. (Happened both ways.) Staff was friendly. Boxed water tasted weird (a little like cardboard?) but not a huge deal. Overall good experience.

10.0 ExcellentAnonymous, Jun 2026
LAX - EUG
Read more Alaska Airlines reviews

Both flights were on time and without in-flight issues. Although we had to check our carry-on bags at the last minute (cabins were full, no more room), our bags were on the baggage carousel very quickly. (Happened both ways.) Staff was friendly. Boxed water tasted weird (a little like cardboard?) but not a huge deal. Overall good experience.

It was a very short flight so there really wasn’t any entertainment my. The little pretzels were good though and the cabin crew was awesome.

They were flexible and able to get me home a day earlier due to a family members illness. Flight was on time and great friendly crew.

My daughter has anxiety and became nauseous after boarding the plane and before take off. She went to the plane bathroom and ended up having to vomit, and your staff promptly removed us from the flight. We explained that it was due to my daughter’s anxiety, and that the condition would not continue in the air, but they removed us anyway. We have flown many many times before on many different airlines and my daughter’s anxiety has resulted in nausea and sickness before takeoff, and every airline has been accommodating and professional. This is was our first time flying with your airline, and also the first time we have ever been removed from a flight. This was the worst service we have ever experienced. This was a special surprise trip we gifted to my daughter for graduating college. I had also paid to upgrade the family to first class and sit all together which we had never done before and can’t afford on a normal basis. Our removal from the flight was not only extremely embarrassing, but devastating for my daughter. My daughter and I were removed from the plane and a call was made by your staff to medical personnel, a few questions were asked of my daughter, and then she was magically cleared. All of this took mere minutes. Why this could not have been performed while we were on the plane, or why this could not have been performed off the plane and then us allowed to reboard is beyond me. My wife and youngest daughter continued on the original flight alone and were very upset and crying due to the situation, yet the staff did nothing to console or assist them. My wife states that upon arrival in Portland and as they were exiting the plane, one of the stewardesses involved said “byyyyeeeee” to them sarcastically and laughed. Myself and my oldest daughter had to wait 4 hours for an alternate flight and were sat in regular seats because our first class seat purchase could not be honored. My wife wasn’t allowed to pick up our rental car and had to wait 4 hours with our luggage until I arrived. The delay prevented us from being able to carry out planned events and ruined the first day of our trip. Upon explaining all of this to your customer service, we received no sympathy, assistance, or compensation other than your staff submitting a request for a reimbursement of my and my daughters first class upgrade cost. When checking in early for our flight back home, the luggage cost for myself and my eldest daughter was no longer discounted as it was for my wife and youngest daughter. Customer service once again could not assist me over the phone and rectify what should have been a minor adjustment. Instead they stated I would have to wait until we physically checked bags in at the airport and then ask staff to adjust the luggage cost. With everything else we had experienced, I was not going to leave that to chance and instead paid full price for the luggage ahead of time. Or experience with Alaska Airlines was a complete disaster and I am baffled at the lack of empathy and assistance from your staff. I’m not sure of what else to say other than the fact that unless we are compensated by Alaska Airlines in some form to offset the horrendous service we received, we will be relaying our experience to family and friends and on social media, and doing all we can to urge everyone to avoid utilizing your services.

I got an email 3 hours before the flight letting me know it got canceled

I had a problem with my reservation and no one could help me understand what happened. I booked my flight months ago and received a confirmation email. In the confirmation email, it said that the flight would depart at 3:15 p.m. A few hours before the flight, I tried to go online and check in, and suddenly it said that the flight was leaving an hour earlier. I had to rush to get to the airport and almost didn't make it. No one could help me understand why this happened, and I'm really concerned that it might happen in the future. I would appreciate some support in this matter.

Not bad. Due to not buying a seat, on the way back, my seat was not assigned till 2 hrs before the flight left. Got me worried I wouldn’t have a seat.

The snack pretzels have garlic. just use normal pretzels. Tomatoijuice instead of only bloody mary mix

Awesome just like that we have a timeline flying Alaska.

The e-ticket and pre-checking the bag was very convenient. In-flight drinks and a snack was appreciated even on such a short flight.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Was fine, delayed and feels like southwest is always late

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

It was as expected and I was grateful for the wheel chair help and ease of use.

Tight seats. Be prepared to sit in the middle if you are in boarding group C.

This was a connecting flight for me and I had already traveled for 7 hours. First, the Pilot didn’t show up and then the gate changed twice, after which the flight was rescheduled for 2 hours later. This made me late and I had to make other transportation arrangements to get home to Astoria another 1 hour & 45 minutes away. This cost me $250 more than it should have. Will not fly southwest again.

Long layover in Chicago. Wish that could have been lessened.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

It was as good as it could be. Flying is not a pleasant experience these days.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

The Pilot was one of the best I've had, very informative about turbulence and got us to our destination early

The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight

There was no wifi even after my husband paid for wifi it wasn’t working. The plane looked and felt old.

Friendly boarding crew. Better could have been a bit more substantial food for this 3 plus hour flight.

Update the cabin with tv screens or at least music sources.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Not enough room between rows and food was gross. $160 baggage charge?! Never again.

East Lounge in Denver was terrible. Turning away active military on orders? Really? Sad.

Clean and plenty of room for handbaggage. Leg room was cramped compared with the 777 from Frankfurt.

Pretty turbulent, but not anyone’s fault. They got us there. Impressed that they carried on with a drink service.

Delays!!! Maintain your planes so your customers don’t have to sit on their assess for over an hour on the tarmac!! Also, United app is buggy. Videos did not load. Overall a miserable experience. Flight crew was awesome though.

This is a no frills, get it done, efficient airline. The seat is a lawn chair. You better bring your own entertainment. If you want something other than water you need to pay for it. But they will get you to your destination quickly, on time, and then they will turn the flight around and go right back where they came from. Reliably. Couple times a week tops. If it fits into your schedule, you can’t get there cheaper or faster.

A three hour delay to board and then another hour on the tarmac because they couldn't get a tractor? Ugh.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

Had to cancel flight as it was delayed by 12 hours

Everything you need to know for your flight from Ontario to Eugene

Information on your arrival and departure airports