Southwest® flights from Knoxville to Washington D.C. Reagan National from $114

Promo Code

Low fares from Knoxville to Washington D.C. Reagan National

$

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 10/15/2026

One-way

Basic

From
$114

Low fares from Knoxville to Washington D.C. Reagan National

$

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 10/15/2026

One-way

Basic

From
$114
Seen: 11 hrs ago

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 10/31/2026

One-way

Basic

From
$114
Seen: 12 hrs ago

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 10/14/2026

One-way

Basic

From
$119
Seen: 11 hrs ago

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 11/06/2026

One-way

Basic

From
$133
Seen: 12 hrs ago

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 10/15/2026

One-way

Choice

From
$149
Seen: 11 hrs ago

Knoxville (TYS)to

Washington D.C. Reagan National (DCA)
Depart: 10/31/2026

One-way

Choice

From
$149
Seen: 12 hrs ago

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Explore flights from Knoxville to Washington D.C. Reagan National

Sep 2026
From$205*
Seen: 4 hrs ago
One Way/Basic
Oct 2026
From$114*
Seen: 11 hrs ago
One Way/Basic
Nov 2026
From$133*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $114
cmp-daily-histogram-bars-legend-max-price-aria-label $294
Displaying fares for September-2026
  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

    SEP

  • TYS–DCA, 09/22/2026: From $237
    22

    Tue

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

    Wed

  • TYS–DCA, 09/24/2026: From $260
    24

    Thu

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    25

    Fri

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

    Sat

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

    Sun

  • TYS–DCA, 09/28/2026: From $294
    28

    Mon

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

  • TYS–DCA, 09/30/2026: From $205
    30

    Wed

  • TYS–DCA, 10/01/2026: From $230
    01

    Thu

    OCT

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    02

    Fri

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    04

    Sun

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

    Mon

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

    Tue

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

    Wed

  • TYS–DCA, 10/08/2026: From $205
    08

    Thu

  • TYS–DCA, 10/09/2026: From $237
    09

    Fri

  • TYS–DCA, 10/10/2026: From $205
    10

    Sat

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

    Sun

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    12

    Mon

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

  • TYS–DCA, 10/14/2026: From $119
    14

    Wed

  • TYS–DCA, 10/15/2026: From $114
    15

    Thu

  • TYS–DCA: cmp-view-offers-disclaimer. Find Offers
    16

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

    • Range$114-$294

    *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:
    Mc Ghee Tyson Airport
    Arriving at:
    Ronald Reagan National Airport
    Distance:
    437 miles

    Route Information

    45† 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 45 weekly flights from Knoxville to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly Knoxville 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 Knoxville 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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