Southwest® flights from Baltimore/Washington to Ontario/LA from $213

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Low fares from Baltimore/Washington to Ontario/LA

$

Baltimore/Washington (BWI)to

Ontario/LA (ONT)
Depart: 12/12/2026

One-way

Basic

From
$213
Seen: 18 hrs ago

Baltimore/Washington (BWI)to

Ontario/LA (ONT)
Depart: 01/30/2027

One-way

Basic

From
$213
Seen: 18 hrs ago

Baltimore/Washington (BWI)to

Ontario/LA (ONT)
Depart: 01/16/2027

One-way

Basic

From
$213
Seen: 20 hrs ago

Baltimore/Washington (BWI)to

Ontario/LA (ONT)
Depart: 02/10/2027

One-way

Basic

From
$213
Seen: 4 hrs ago

Baltimore/Washington (BWI)to

Ontario/LA (ONT)
Depart: 12/09/2026

One-way

Basic

From
$213
Seen: 14 hrs ago

Baltimore/Washington (BWI)to

Ontario/LA (ONT)
Depart: 12/16/2026

One-way

Basic

From
$213
Seen: 19 hrs ago

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Explore flights from Baltimore/Washington to Ontario/LA

Nov 2026
From$329*
Seen: 10 hrs ago
One Way/Basic
Dec 2026
From$213*
Seen: 19 hrs ago
One Way/Basic
Jan 2027
From$213*
Seen: 18 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $213
cmp-daily-histogram-bars-legend-max-price-aria-label $540
Displaying fares for November-2026
  • BWI–ONT, 11/11/2026: From $329
    11

    Wed

    NOV

  • BWI–ONT, 11/12/2026: From $329
    12

    Thu

  • BWI–ONT, 11/13/2026: From $329
    13

    Fri

  • BWI–ONT, 11/14/2026: From $329
    14

    Sat

  • BWI–ONT, 11/15/2026: From $329
    15

    Sun

  • BWI–ONT, 11/16/2026: From $329
    16

    Mon

  • BWI–ONT, 11/17/2026: From $329
    17

    Tue

  • BWI–ONT, 11/18/2026: From $329
    18

    Wed

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • BWI–ONT, 11/20/2026: From $329
    20

    Fri

  • BWI–ONT, 11/21/2026: From $329
    21

    Sat

  • BWI–ONT, 11/22/2026: From $329
    22

    Sun

  • BWI–ONT, 11/23/2026: From $329
    23

    Mon

  • BWI–ONT, 11/24/2026: From $329
    24

    Tue

  • BWI–ONT, 11/25/2026: From $329
    25

    Wed

  • BWI–ONT, 11/26/2026: From $329
    26

    Thu

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    27

    Fri

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • BWI–ONT, 11/29/2026: From $540
    29

    Sun

  • BWI–ONT, 11/30/2026: From $329
    30

    Mon

  • BWI–ONT, 12/01/2026: From $329
    01

    Tue

    DEC

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    03

    Thu

  • BWI–ONT, 12/04/2026: From $248
    04

    Fri

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • BWI–ONT: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • BWI–ONT, 12/09/2026: From $213
    09

    Wed

  • BWI–ONT, 12/10/2026: From $233
    10

    Thu

    • Range$213-$540

    *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:
    Balt./Wash. International Airport
    Arriving at:
    LA/Ontario International Airport
    Average flight time:
    5 hours 27 minutes
    Distance:
    2283 miles

    Questions we hear the most

    The average flight time from Baltimore/Washington to Ontario/LA is 5 hours 27 minutes.
    There are 152 weekly flights from Baltimore/Washington to Ontario/LA on Southwest Airlines.
    Yes, Southwest flies nonstop from Baltimore/Washington to Ontario/LA once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Baltimore/Washington to Ontario/LA once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Baltimore/Washington to Ontario/LA with Southwest, check out our Low Fare Calendar.
    You can rent a car at LA/Ontario International Airport book yours with your flight.
    Yes! Flights from Baltimore/Washington to Ontario/LA—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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