Southwest® flights from Buffalo/Niagara Falls to Washington, D.C. (Reagan National) from $231

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Low fares from Buffalo/Niagara Falls to Washington, D.C. (Reagan National)

$

Buffalo/Niagara Falls (BUF)to

Washington, D.C. (Reagan National) (DCA)
Depart: 10/01/2026

One-way

Basic

From
$231
Seen: 19 hrs ago

Buffalo/Niagara Falls (BUF)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/22/2026

One-way

Basic

From
$231
Seen: 44 minutes ago

Buffalo/Niagara Falls (BUF)to

Washington, D.C. (Reagan National) (DCA)
Depart: 11/09/2026

One-way

Basic

From
$231
Seen: 18 hrs ago

Buffalo/Niagara Falls (BUF)to

Washington, D.C. (Reagan National) (DCA)
Depart: 10/21/2026

One-way

Basic

From
$231
Seen: 10 hrs ago

Buffalo/Niagara Falls (BUF)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/26/2026

One-way

Basic

From
$231
Seen: 22 hrs ago

Buffalo/Niagara Falls (BUF)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/12/2026

One-way

Basic

From
$242
Seen: 21 hrs ago

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Explore flights from Buffalo/Niagara Falls to Washington, D.C. (Reagan National)

Aug 2026
From$375*
Seen: 19 hrs ago
One Way/Basic
Sep 2026
From$231*
Seen: 44 minutes ago
One Way/Basic
Oct 2026
From$231*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $242
cmp-daily-histogram-bars-legend-max-price-aria-label $421
Displaying fares for August-2026
  • BUF–DCA, 08/22/2026: From $421
    22

    Sat

    AUG

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

    Sun

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

    Mon

  • BUF–DCA, 08/25/2026: From $421
    25

    Tue

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

    Wed

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

    Thu

  • BUF–DCA, 08/28/2026: From $375
    28

    Fri

  • BUF–DCA, 08/29/2026: From $375
    29

    Sat

  • BUF–DCA, 08/30/2026: From $375
    30

    Sun

  • BUF–DCA, 08/31/2026: From $375
    31

    Mon

  • BUF–DCA, 09/01/2026: From $375
    01

    Tue

    SEP

  • BUF–DCA, 09/02/2026: From $375
    02

    Wed

  • BUF–DCA, 09/03/2026: From $375
    03

    Thu

  • BUF–DCA, 09/04/2026: From $264
    04

    Fri

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • BUF–DCA, 09/10/2026: From $242
    10

    Thu

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

  • BUF–DCA, 09/12/2026: From $242
    12

    Sat

  • BUF–DCA, 09/13/2026: From $380
    13

    Sun

  • BUF–DCA, 09/14/2026: From $242
    14

    Mon

  • BUF–DCA, 09/15/2026: From $242
    15

    Tue

  • BUF–DCA, 09/16/2026: From $242
    16

    Wed

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

    Thu

  • BUF–DCA, 09/18/2026: From $242
    18

    Fri

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

    Sat

  • BUF–DCA: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

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

    Mon

    • Range$242-$421

    *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:
    Buffalo Niagara International Airport
    Arriving at:
    Ronald Reagan National Airport
    Distance:
    296 miles

    Route Information

    42† 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 42 weekly flights from Buffalo/Niagara Falls to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly Buffalo/Niagara Falls 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 Buffalo/Niagara Falls 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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