What is the cheapest airline that flies from Ontario to Eugene?

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Ontario to Eugene

What airlines fly to Eugene?

Alaska Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Eugene from Ontario according to our data. Alaska Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Eugene. Keep in mind that there are 7 different airlines that fly to Eugene on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Ontario and Eugene?

Denver (DEN) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ontario to Eugene?

Flights via Seattle (SEA) offer the lowest average round-trip price of $156.

Which layover airport has the shortest travel time from Ontario to Eugene?

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 5h 00m.

Which layover airport has the shortest connection time from Ontario to Eugene?

Seattle (SEA) has the shortest average layover time for this route: 0h 50m.

When did momondo last update prices for flights from Ontario Airport to Eugene Airport?

Prices for flights from Ontario Airport to Eugene Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Eugene Airport?

As of September 2026, there are 3 operators available to choose from for flights from Ontario Airport to Eugene Airport.

How old do you have to be to fly from Ontario Airport to Eugene Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Eugene Airport.

What documentation or ID do you need to fly to Eugene Airport?

The travel and health documents required for your trip to Eugene Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Eugene Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$134 Cheap Flights from Ontario to Eugene in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Eugene

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 pm - 9:25 pmONT Ontario-EUG Eugene

3h 40m1 stop Sacramento Intl

6:50 am - 10:20 amEUG Eugene-ONT Ontario

3h 30m1 stop Sacramento Intl

$267Southwest

Tue, Oct 13 - Tue, Oct 20

5:03 pm - 11:49 pmONT Ontario-EUG Eugene

6h 46m1 stop Salt Lake City

5:41 pm - 10:43 pmEUG Eugene-ONT Ontario

5h 02m1 stop Seattle/Tacoma Intl

$267Delta

Tue, Oct 6 - Sat, Oct 17

1:00 pm - 9:38 pmONT Ontario-EUG Eugene

8h 38m1 stop Denver Intl

5:50 am - 9:57 amEUG Eugene-ONT Ontario

4h 07m1 stop San Francisco

$267United Airlines

Sat, Feb 13 - Tue, Feb 23

11:56 am - 5:01 pmONT Ontario-EUG Eugene

5h 05m1 stop Seattle/Tacoma Intl

4:41 pm - 10:11 pmEUG Eugene-ONT Ontario

5h 30m1 stop Salt Lake City

$267Delta

Tue, Oct 20 - Sat, Oct 24

6:20 am - 12:56 pmONT Ontario-EUG Eugene

6h 36m1 stop Seattle/Tacoma Intl

5:41 pm - 10:43 pmEUG Eugene-ONT Ontario

5h 02m1 stop Seattle/Tacoma Intl

$267Delta

Wed, Oct 21 - Sat, Oct 31

5:50 am - 3:50 pmONT Ontario-EUG Eugene

10h 00m2 stops Sacramento Intl San Diego

4:30 pm - 9:25 pmEUG Eugene-ONT Ontario

4h 55m1 stop Las Vegas Harry Reid Intl

$272Southwest

Tue, Oct 13 - Tue, Oct 20

5:45 pm - 9:25 pmONT Ontario-EUG Eugene

3h 40m1 stop Sacramento Intl

7:15 am - 5:00 pmEUG Eugene-ONT Ontario

9h 45m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$272Southwest

Wed, Oct 21 - Sat, Oct 31

1:29 pm - 9:29 pmONT Ontario-EUG Eugene

8h 00m1 stop Denver Intl

5:55 am - 12:29 pmEUG Eugene-ONT Ontario

6h 34m1 stop San Francisco

$285United Airlines

Sat, Nov 14 - Mon, Nov 16

11:13 am - 6:46 pmONT Ontario-EUG Eugene

7h 33m1 stop Seattle/Tacoma Intl

4:02 pm - 8:15 pmEUG Eugene-ONT Ontario

4h 13m1 stop Portland

$317Alaska Airlines

Tue, Oct 20 - Sat, Oct 24

7:25 am - 12:06 pmONT Ontario-EUG Eugene

4h 41m1 stop Portland

7:23 pm - 10:17 amEUG Eugene-ONT Ontario

14h 54m1 stop Seattle/Tacoma Intl

$331Alaska Airlines

Sat, Oct 10 - Tue, Oct 13

Cheap last minute flights

Enter your travel dates to find the best prices.

3:14 pm - 11:53 pmONT Ontario-EUG Eugene

8h 39m1 stop Seattle/Tacoma Intl

10:03 am - 7:03 pmEUG Eugene-ONT Ontario

9h 00m1 stop Seattle/Tacoma Intl

$576Alaska Airlines

Tue, Sep 22 - Tue, Sep 29

5:00 am - 12:55 pmONT Ontario-EUG Eugene

7h 55m1 stop Denver Intl

1:57 pm - 8:01 pmEUG Eugene-ONT Ontario

6h 04m1 stop San Francisco

$577United Airlines

Tue, Sep 22 - Tue, Sep 22

6:02 am - 1:44 pmONT Ontario-EUG Eugene

7h 42m1 stop Seattle/Tacoma Intl

1:23 pm - 7:03 pmEUG Eugene-ONT Ontario

5h 40m1 stop Seattle/Tacoma Intl

$587Alaska Airlines

Tue, Sep 22 - Wed, Sep 23

5:45 am - 11:45 amONT Ontario-EUG Eugene

6h 00m2 stops Las Vegas Harry Reid Intl San Jose

2:50 pm - 6:25 pmEUG Eugene-ONT Ontario

3h 35m1 stop San Jose

$616Southwest

Tue, Sep 22 - Tue, Sep 22

12:12 pm - 5:08 pmONT Ontario-EUG Eugene

4h 56m1 stop Seattle/Tacoma Intl

5:25 am - 9:51 amEUG Eugene-ONT Ontario

4h 26m1 stop Portland

$650Alaska Airlines

Fri, Sep 25 - Tue, Sep 29

11:54 am - 5:11 pmONT Ontario-EUG Eugene

5h 17m1 stop Seattle/Tacoma Intl

5:51 pm - 10:40 pmEUG Eugene-ONT Ontario

4h 49m1 stop Seattle/Tacoma Intl

$675Delta

Fri, Sep 25 - Sat, Sep 26

5:15 pm - 11:47 pmONT Ontario-EUG Eugene

6h 32m1 stop Salt Lake City

5:51 pm - 10:40 pmEUG Eugene-ONT Ontario

4h 49m1 stop Seattle/Tacoma Intl

$675Delta

Sun, Sep 20 - Wed, Sep 23

1:18 pm - 9:17 pmONT Ontario-EUG Eugene

7h 59m1 stop Denver Intl

5:00 am - 12:50 pmEUG Eugene-ONT Ontario

7h 50m1 stop Denver Intl

$675United Airlines

Mon, Sep 21 - Tue, Sep 22

6:08 am - 11:43 amONT Ontario-EUG Eugene

5h 35m1 stop San Francisco

6:00 am - 12:18 pmEUG Eugene-ONT Ontario

6h 18m1 stop San Francisco

$675United Airlines

Wed, Sep 23 - Mon, Sep 28

5:40 am - 11:40 amONT Ontario-EUG Eugene

6h 00m1 stop Las Vegas Harry Reid Intl

1:15 pm - 8:45 pmEUG Eugene-ONT Ontario

7h 30m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$768Southwest

Mon, Sep 21 - Mon, Sep 21

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Southwest flights from Ontario to Eugene

Our best Southwest deals on Ontario to Eugene flight tickets

Southwest

Oct 13

ONT5:50 amOntario

10h 00m

2 stops

EUG3:50 pmEugene

Oct 20

EUG4:30 pmEugene

4h 55m

1 stop

ONT9:25 pmOntario

$272

Southwest

Oct 20

ONT6:10 amOntario

6h 45m

2 stops

EUG12:55 pmEugene

Nov 3

EUG11:15 amEugene

6h 25m

2 stops

ONT5:40 pmOntario

$277

Southwest

Oct 13

ONT7:05 amOntario

8h 45m

2 stops

EUG3:50 pmEugene

Oct 20

EUG11:15 amEugene

10h 50m

2 stops

ONT10:05 pmOntario

$283

Delta flights from Ontario to Eugene

Our best Delta deals on Ontario to Eugene flight tickets

Delta

Oct 20

ONT6:20 amOntario

6h 36m

1 stop

EUG12:56 pmEugene

Nov 3

EUG5:20 amEugene

7h 16m

1 stop

ONT12:36 pmOntario

$267

Delta

Oct 5

ONT11:54 amOntario

5h 17m

1 stop

EUG5:11 pmEugene

Oct 17

EUG12:33 pmEugene

4h 39m

1 stop

ONT5:12 pmOntario

$285

Delta

Oct 22

ONT9:45 amOntario

6h 16m

1 stop

EUG4:01 pmEugene

Oct 26

EUG5:41 pmEugene

5h 02m

1 stop

ONT10:43 pmOntario

$303

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Tue 10/13

5:45 pm-9:25 pm

1 stop3h 40m

Eugene

Tue 10/20

6:50 am-10:20 am

1 stop3h 30m

$267

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Tue 10/6

5:03 pm-11:49 pm

1 stop6h 46m

Eugene

Sat 10/17

5:41 pm-10:43 pm

1 stop5h 02m

$267

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Sat 2/13

1:00 pm-9:38 pm

1 stop8h 38m

Eugene

Tue 2/23

5:50 am-9:57 am

1 stop4h 07m

$267

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Tue 10/20

11:56 am-5:01 pm

1 stop5h 05m

Eugene

Sat 10/24

4:41 pm-10:11 pm

1 stop5h 30m

$267

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Wed 10/21

6:20 am-12:56 pm

1 stop6h 36m

Eugene

Sat 10/31

5:41 pm-10:43 pm

1 stop5h 02m

$267

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Tue 10/13

5:50 am-3:50 pm

2 stops10h 00m

Eugene

Tue 10/20

4:30 pm-9:25 pm

1 stop4h 55m

$272

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Wed 10/21

5:45 pm-9:25 pm

1 stop3h 40m

Eugene

Sat 10/31

7:15 am-5:00 pm

2 stops9h 45m

$272

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Sat 11/14

1:29 pm-9:29 pm

1 stop8h 00m

Eugene

Mon 11/16

5:55 am-12:29 pm

1 stop6h 34m

$285

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Tue 10/20

11:13 am-6:46 pm

1 stop7h 33m

Eugene

Sat 10/24

4:02 pm-8:15 pm

1 stop4h 13m

$317

OntarioEugene

ONT Ontario - EUG Eugene

ONTEUG

Ontario

Sat 10/10

7:25 am-12:06 pm

1 stop4h 41m

Eugene

Tue 10/13

7:23 pm-10:17 am

1 stop14h 54m

$331

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Eugene

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Ontario and Eugene?

Prices are currently low for flights on this route.

Typical prices usually range from $352 to $452.
The lowest price recently found on this route was $267.

What is the cheapest month to fly to Eugene?

In general, February is the cheapest month to fly from Ontario to Eugene. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $197. If you don’t want to visit Eugene in February, then you should wait until January to fly from Ontario, when ticket prices are also cheap, with an average price of $307.

What is the cheapest day to depart on your flight to Eugene?

According to our data, Wednesday is the cheapest day to fly to Eugene from Ontario. The lowest ticket price found for a Wednesday departure recently was $287. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Eugene is Sunday, with ticket prices averaging around $387.

What is the cheapest time of day to depart on your flight to Eugene?

Flying to Eugene from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $299 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $317 on average. Flights to Eugene from Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Ontario to Eugene flight prices changed over time?

As of September 2026, prices for Ontario to Eugene flights are approximately 30% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Eugene

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Eugene according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Eugene (ONT to EUG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Eugene

Best Price Found	$134
Fastest flight time	4h 08m
Direct flights	None

The best one-way flight to Eugene from Ontario in the past 72 hours is $134. The best round-trip flight deal from Ontario to Eugene found on momondo in the last 72 hours is $267.

The fastest flight from Ontario to Eugene takes 4h 08m

There are no direct flights from Ontario to Eugene. There are no popular flight routes from Ontario to Eugene.

Search flight deals

Frequently asked questions about flying from Ontario to Eugene

How far is Ontario to Eugene by plane?
Eugene is 748.3 mi away from Ontario. 4h 08m is a normal flight duration for this route.
When did momondo last update prices for flights from Ontario Airport to Eugene Airport?
Prices for flights from Ontario Airport to Eugene Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Eugene Airport?
As of September 2026, there are 3 operators available to choose from for flights from Ontario Airport to Eugene Airport.
How old do you have to be to fly from Ontario Airport to Eugene Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Eugene Airport.
What documentation or ID do you need to fly to Eugene Airport?
The travel and health documents required for your trip to Eugene Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Eugene Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ontario to Eugene?
Based on momondo bookings for flights between Ontario and Eugene, the leading airline is Alaska Airlines, making up 53% of the total bookings. Other popular airlines include Southwest with 34% and United Airlines with 13%.

Best airlines flying from Ontario to Eugene

Compare and see reviews for airlines that fly from Ontario to Eugene with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $180	Free Cancellation	Rating 7.4 10,230 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $197	Free Cancellation	Rating 7.9 12,949 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $265	Free Cancellation	Rating 8.0 4,192 reviews	Search Southwest flights

Newport

Yachats

Springfield

Albany

Corvallis

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Eugene?

Finding the right flight to Eugene from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Eugene quick and easy, saving you time and money.

Can I find flights from Ontario to Eugene with flexible booking policies on momondo?

Yes. All flights to Eugene from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Eugene?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Eugene.

I’m not ready to book a flight from Ontario to Eugene right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Eugene from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Eugene trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Mon 10/19

Mon 10/26

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Ontario

Complete your trip

Feeling lucky

Airports servicing Oregon

Klamath Falls Kingsley Field Airport

Cheap flights from Ontario to Eugene from $134

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Eugene departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Ontario to Eugene

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Southwest flights from Ontario to Eugene

Our best Southwest deals on Ontario to Eugene flight tickets

Delta flights from Ontario to Eugene

Our best Delta deals on Ontario to Eugene flight tickets

momondo Fare Finder

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

See travel insights to Eugene from

How to get the cheapest flight ticket from Ontario to Eugene

What is the typical price of a round-trip flight between Ontario and Eugene?

What is the cheapest month to fly to Eugene?

What is the cheapest day to depart on your flight to Eugene?

What is the cheapest time of day to depart on your flight to Eugene?

How have Ontario to Eugene flight prices changed over time?

What is the cheapest airline that flies from Ontario to Eugene?

What airlines fly to Eugene?

Which airport is the most popular layover for flights between Ontario and Eugene?

Which layover airport offers the lowest fares from Ontario to Eugene?

Which layover airport has the shortest travel time from Ontario to Eugene?

Which layover airport has the shortest connection time from Ontario to Eugene?

When to book flights from Ontario to Eugene

Cheap Ontario to Eugene (ONT to EUG) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Eugene

Best airlines flying from Ontario to Eugene

Compare and see reviews for airlines that fly from Ontario to Eugene with momondo

Traveling to a place near Eugene?

Why use momondo?

An easier way to manage your Eugene trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Oregon

Fly your favorite airline to Eugene

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Eugene

List of cabin classes available on flights landing in Eugene. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ontario

According to popular flight searches on momondo this year

Complete your trip to Eugene

Explore popular destinations other users love

According to popular flight searches on momondo this year