Southwest® flights from Ontario/LA to Eugene from $145

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Low fares from Ontario/LA to Eugene

$

Ontario/LA (ONT)to

Eugene (EUG)
Depart: 09/12/2026

One-way

Basic

From
$145
Seen: 9 hrs ago

Ontario/LA (ONT)to

Eugene (EUG)
Depart: 09/16/2026

One-way

Basic

From
$145
Seen: 6 hrs ago

Ontario/LA (ONT)to

Eugene (EUG)
Depart: 10/19/2026

One-way

Basic

From
$170
Seen: 10 hrs ago

Ontario/LA (ONT)to

Eugene (EUG)
Depart: 10/08/2026

One-way

Basic

From
$170
Seen: 10 hrs ago

Ontario/LA (ONT)to

Eugene (EUG)
Depart: 11/12/2026

One-way

Basic

From
$170
Seen: 3 hrs ago

Ontario/LA (ONT)to

Eugene (EUG)
Depart: 10/15/2026

One-way

Basic

From
$170
Seen: 22 hrs ago

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Explore flights from Ontario/LA to Eugene

Aug 2026
From$284*
Seen: 10 hrs ago
One Way/Basic
Sep 2026
From$145*
Seen: 9 hrs ago
One Way/Basic
Oct 2026
From$170*
Seen: 22 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $145
cmp-daily-histogram-bars-legend-max-price-aria-label $372
Displaying fares for August-2026
  • ONT–EUG, 08/21/2026: From $372
    21

    Fri

    AUG

  • ONT–EUG, 08/22/2026: From $284
    22

    Sat

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • ONT–EUG, 08/24/2026: From $372
    24

    Mon

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    25

    Tue

  • ONT–EUG, 08/26/2026: From $284
    26

    Wed

  • ONT–EUG, 08/27/2026: From $372
    27

    Thu

  • ONT–EUG, 08/28/2026: From $372
    28

    Fri

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • ONT–EUG, 08/30/2026: From $372
    30

    Sun

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    31

    Mon

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

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    02

    Wed

  • ONT–EUG, 09/03/2026: From $230
    03

    Thu

  • ONT–EUG, 09/04/2026: From $230
    04

    Fri

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    05

    Sat

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    06

    Sun

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    07

    Mon

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    08

    Tue

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

  • ONT–EUG, 09/12/2026: From $145
    12

    Sat

  • ONT–EUG, 09/13/2026: From $229
    13

    Sun

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

  • ONT–EUG: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

  • ONT–EUG, 09/16/2026: From $145
    16

    Wed

  • ONT–EUG, 09/17/2026: From $170
    17

    Thu

  • ONT–EUG, 09/18/2026: From $173
    18

    Fri

  • ONT–EUG, 09/19/2026: From $170
    19

    Sat

  • ONT–EUG, 09/20/2026: From $219
    20

    Sun

    • Range$145-$372

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    LA/Ontario International Airport
    Arriving at:
    Eugene Airport
    Distance:
    757 miles

    Route Information

    64† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 64 weekly flights from Ontario/LA to Eugene on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Eugene with Southwest, check out our Low Fare Calendar.
    You can rent a car at Eugene Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Eugene—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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