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Cheap Flights from Ontario International to Eugene

Compare Ontario International to Eugene flight deals

Find the cheapest month or even day of the year to fly to Eugene

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Flight deals from Ontario International to Eugene

Looking for a cheap last-minute deal or the best return flight from Ontario International to Eugene? Find the lowest prices on one-way and return tickets right here.
Eugene.230 € per passenger.Departing Tue, 1 Jul, returning Sat, 5 Jul.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 1 Jul, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Sat, 5 Jul, arriving in Ontario International.Price includes taxes and charges.From 230 €, select.
Eugene.235 € per passenger.Departing Fri, 26 Sep, returning Tue, 30 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 26 Sep, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Tue, 30 Sep, arriving in Ontario International.Price includes taxes and charges.From 235 €, select.
Eugene.248 € per passenger.Departing Fri, 6 Jun, returning Sun, 8 Jun.Return flight with United.Outbound indirect flight with United, departs from Ontario International on Fri, 6 Jun, arriving in Eugene.Inbound indirect flight with United, departs from Eugene on Sun, 8 Jun, arriving in Ontario International.Price includes taxes and charges.From 248 €, select.
Eugene.249 € per passenger.Departing Tue, 29 Jul, returning Tue, 5 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 29 Jul, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Tue, 5 Aug, arriving in Ontario International.Price includes taxes and charges.From 249 €, select.
Eugene.250 € per passenger.Departing Mon, 18 Aug, returning Wed, 20 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 18 Aug, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Wed, 20 Aug, arriving in Ontario International.Price includes taxes and charges.From 250 €, select.
Eugene.289 € per passenger.Departing Wed, 17 Dec, returning Wed, 24 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 17 Dec, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Wed, 24 Dec, arriving in Ontario International.Price includes taxes and charges.From 289 €, select.
Eugene.309 € per passenger.Departing Thu, 29 May, returning Sat, 31 May.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 29 May, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Sat, 31 May, arriving in Ontario International.Price includes taxes and charges.From 309 €, select.
Eugene.324 € per passenger.Departing Fri, 21 Nov, returning Sat, 22 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 21 Nov, arriving in Eugene.Inbound indirect flight with Southwest Airlines, departs from Eugene on Sat, 22 Nov, arriving in Ontario International.Price includes taxes and charges.From 324 €, select.

Find the cheapest month to fly from Ontario International to Eugene

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Eugene flights are currently cheapest in July.
May
from 309 €
Jun
from 248 €
Jul
from 230 €
Aug
from 250 €
Sep
from 235 €
Oct
Find prices
Nov
from 324 €
Dec
from 289 €
Jan
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Feb
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Mar
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Apr
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Ontario International to Eugene: Alternative routes

Compare routes from Ontario International to Eugene below. You may find an airport to fly into that's cheaper, faster, or easier than Eugene.

Ontario to Eugene: Flight information

The things to know before you go.
Cheapest flight found230 €
Cheapest month to flyJuly

Finding cheap flights from Ontario International to Eugene: Frequently asked questions

The best price we found for a return flight from Ontario International to Eugene is 230 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Eugene. But we found flights with one or more stops from 230 €.
As of May 2025, there are no flights flying from Ontario International to Eugene.
The cheapest month to fly from Ontario International to Eugene is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Eugene Airport on Tuesday, 1 July 2025.
No airlines currently offer direct flights between Ontario International Airport and Eugene Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Eugene but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Eugene is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Southwest Airlines offers the cheapest flight tickets to Eugene.

Travelling from Ontario International Airport (ONT) to Mahlon Sweet Field Airport (EUG): what you need to know

  • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably catch your ONT to EUG flight.

  • During popular months like August, it's a good idea to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're travelling during a peak period in general.

  • If you want to break up your flight, simply uncheck 'Direct flights only' when searching for your ticket from Ontario International Airport to Mahlon Sweet Field Airport. These are the most popular stopovers between ONT and EUG:

    • Sacramento International Airport

    • San Francisco International Airport

    • Salt Lake City International Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Mahlon Sweet Field Airport (EUG)

  • Right now, 115 € is the cheapest price we've found for a one-way Ontario International Airport to Mahlon Sweet Field Airport flight. The best price for a return ticket is 230 €. Bear in mind that fares could change due to demand at the time of booking.

  • Don't wait until the last minute. You're more likely to find cheap tickets from ONT to EUG if you book in advance. Airlines often offer some fantastic early bird discounts.

  • Finding cheap flights from Ontario International Airport to Mahlon Sweet Field Airport is easy if you can be flexible with your travel plans. Use the 'Whole month' search function to see the lowest prices throughout the month and bag a great deal.

  • Picking up cheap flights from ONT to EUG couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as a new deal comes up.

  • Secure the right flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Ontario International Airport to Mahlon Sweet Field Airport, use the 'Sort by' tool. You can also filter results by arrival and departure times, airline, and journey duration.

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport gets high marks for its on-time performance. 83.6% of flights that depart ONT arrive at their destination without delay.

  • To reach Ontario International Airport from central Ontario, it'll take around 10 minutes if you're going by car. Of course, this depends on traffic. It's approximately 6 kilometres from the airport to the city centre.

  • You can expect a journey time of around 1 hour 30 minutes on public transport.

  • Catching an early flight from Ontario International Airport to Mahlon Sweet Field Airport? Avoid the last-minute rush to the airport (and sneak in some extra snooze time) by picking one of these stays near ONT:

Arriving at Mahlon Sweet Field Airport (EUG)

  • Consider staying at Hampton Inn Eugene after your Ontario International Airport to Mahlon Sweet Field Airport flight. It's not too far from EUG and a handy option if you'd like to freshen up right away.

  • Hit the road running by picking up a Mahlon Sweet Field Airport rental car. Grab your wheels from Dollar, Budget or Hertz to explore Eugene and beyond.

  • Reserving your vehicle from Mahlon Sweet Field Airport about three weeks in advance can help you get the best possible rate.

Getting from Mahlon Sweet Field Airport (EUG) to central Eugene

  • You'll find EUG at 28801 Douglas Dr.

  • From Mahlon Sweet Field Airport, Eugene is approximately 18 kilometres away. It takes around 20 minutes to reach the centre by car.

When to fly to Mahlon Sweet Field Airport (EUG)

  • It's time to pick your travel dates for your flight from Ontario International Airport to Mahlon Sweet Field Airport. July is the busiest month to visit Eugene. If you want a more low-key vibe, go in May.

  • The warmest month in Eugene is August, with temperatures ranging between 9ºC (48ºF) and 31ºC (88ºF). Lock in your flights from Ontario International Airport to Mahlon Sweet Field Airport in this month if this is the type of weather you like.

  • Look for cheap tickets from ONT to EUG in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 13ºC (55ºF) on average.

Explore more of United States

  • Eugene has loads to offer, but there are so many other parts of United States waiting to be explored. About 402 kilometres north of Eugene, a visit to Seattle will keep you busy. Start with leading sights like Greyhound: Bus Station, LMN Architects and Boeing Radiation Effects Lab.

  • Portland is another must-experience destination in United States and is around 161 kilometres north of Eugene. No journey is complete without dropping by Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

Plan the rest of your trip from Ontario to Eugene

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.