Southwest® flights from Ontario/LA to Washington D.C. Reagan National from $191

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Low fares from Ontario/LA to Washington D.C. Reagan National

$

Ontario/LA (ONT)to

Washington D.C. Reagan National (DCA)
Depart: 12/10/2026

One-way

Basic

From
$191
Seen: 12 hrs ago

Ontario/LA (ONT)to

Washington D.C. Reagan National (DCA)
Depart: 12/05/2026

One-way

Basic

From
$191
Seen: 14 hrs ago

Ontario/LA (ONT)to

Washington D.C. Reagan National (DCA)
Depart: 12/03/2026

One-way

Basic

From
$191
Seen: 22 hrs ago

Ontario/LA (ONT)to

Washington D.C. Reagan National (DCA)
Depart: 02/18/2027

One-way

Basic

From
$191
Seen: 8 hrs ago

Ontario/LA (ONT)to

Washington D.C. Reagan National (DCA)
Depart: 12/17/2026

One-way

Basic

From
$191
Seen: 15 hrs ago

Ontario/LA (ONT)to

Washington D.C. Reagan National (DCA)
Depart: 12/02/2026

One-way

Basic

From
$191
Seen: 22 hrs ago

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Explore flights from Ontario/LA to Washington D.C. Reagan National

Nov 2026
From$397*
Seen: 6 hrs ago
One Way/Basic
Dec 2026
From$191*
Seen: 12 hrs ago
One Way/Basic
Jan 2027
From$191*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $191
cmp-daily-histogram-bars-legend-max-price-aria-label $572
Displaying fares for November-2026
  • ONT–DCA, 11/12/2026: From $397
    12

    Thu

    NOV

  • ONT–DCA, 11/13/2026: From $402
    13

    Fri

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

    Sat

  • ONT–DCA, 11/15/2026: From $397
    15

    Sun

  • ONT–DCA, 11/16/2026: From $397
    16

    Mon

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

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

    Thu

  • ONT–DCA, 11/20/2026: From $402
    20

    Fri

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    21

    Sat

  • ONT–DCA, 11/22/2026: From $397
    22

    Sun

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

    Mon

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    24

    Tue

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    25

    Wed

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    26

    Thu

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

    Fri

  • ONT–DCA, 11/28/2026: From $511
    28

    Sat

  • ONT–DCA, 11/29/2026: From $572
    29

    Sun

  • ONT–DCA: cmp-view-offers-disclaimer. Find Offers
    30

    Mon

  • ONT–DCA, 12/01/2026: From $305
    01

    Tue

    DEC

  • ONT–DCA, 12/02/2026: From $191
    02

    Wed

  • ONT–DCA, 12/03/2026: From $191
    03

    Thu

  • ONT–DCA, 12/04/2026: From $221
    04

    Fri

  • ONT–DCA, 12/05/2026: From $191
    05

    Sat

  • ONT–DCA, 12/06/2026: From $221
    06

    Sun

  • ONT–DCA, 12/07/2026: From $216
    07

    Mon

  • ONT–DCA, 12/08/2026: From $191
    08

    Tue

  • ONT–DCA, 12/09/2026: From $216
    09

    Wed

  • ONT–DCA, 12/10/2026: From $191
    10

    Thu

  • ONT–DCA, 12/11/2026: From $206
    11

    Fri

    • Range$191-$572

    *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:
    Ronald Reagan National Airport
    Distance:
    2265 miles

    Questions we hear the most

    There are 94 weekly flights from Ontario/LA to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Washington, D.C. (Reagan National) with Southwest, check out our Low Fare Calendar.
    You can rent a car at Ronald Reagan National Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Washington, D.C. (Reagan National)—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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