Southwest® flights from Indianapolis to Seattle/Tacoma from $154

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Low fares from Indianapolis to Seattle/Tacoma

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Indianapolis (IND)to

Seattle/Tacoma (SEA)
Depart: 10/17/2026

One-way

Basic

From
$154
Seen: 11 hrs ago

Indianapolis (IND)to

Seattle/Tacoma (SEA)
Depart: 12/02/2026

One-way

Basic

From
$154
Seen: 7 hrs ago

Indianapolis (IND)to

Seattle/Tacoma (SEA)
Depart: 10/29/2026

One-way

Basic

From
$154
Seen: 14 hrs ago

Indianapolis (IND)to

Seattle/Tacoma (SEA)
Depart: 12/01/2026

One-way

Basic

From
$154
Seen: 13 hrs ago

Indianapolis (IND)to

Seattle/Tacoma (SEA)
Depart: 10/22/2026

One-way

Basic

From
$154
Seen: 23 hrs ago

Indianapolis (IND)to

Seattle/Tacoma (SEA)
Depart: 10/24/2026

One-way

Basic

From
$154
Seen: 18 hrs ago

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Explore flights from Indianapolis to Seattle/Tacoma

Sep 2026
From$271*
Seen: 18 hrs ago
One Way/Basic
Oct 2026
From$154*
Seen: 14 hrs ago
One Way/Basic
Nov 2026
From$174*
Seen: 9 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $180
cmp-daily-histogram-bars-legend-max-price-aria-label $327
Displaying fares for September-2026
  • IND–SEA, 09/11/2026: From $317
    11

    Fri

    SEP

  • IND–SEA, 09/12/2026: From $281
    12

    Sat

  • IND–SEA, 09/13/2026: From $327
    13

    Sun

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    14

    Mon

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    15

    Tue

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    16

    Wed

  • IND–SEA, 09/17/2026: From $317
    17

    Thu

  • IND–SEA, 09/18/2026: From $327
    18

    Fri

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    19

    Sat

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    20

    Sun

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    21

    Mon

  • IND–SEA, 09/22/2026: From $271
    22

    Tue

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    23

    Wed

  • IND–SEA, 09/24/2026: From $327
    24

    Thu

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    25

    Fri

  • IND–SEA, 09/26/2026: From $271
    26

    Sat

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    27

    Sun

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    28

    Mon

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    29

    Tue

  • IND–SEA, 09/30/2026: From $271
    30

    Wed

  • IND–SEA, 10/01/2026: From $304
    01

    Thu

    OCT

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    02

    Fri

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    03

    Sat

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    04

    Sun

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    05

    Mon

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    06

    Tue

  • IND–SEA, 10/07/2026: From $180
    07

    Wed

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    08

    Thu

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    09

    Fri

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    10

    Sat

    • Range$180-$327

    *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:
    Indianapolis International Airport
    Arriving at:
    Seattle/Tacoma International Airport
    Distance:
    1866 miles

    Route Information

    117† 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 117 weekly flights from Indianapolis to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly Indianapolis to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Indianapolis to Seattle/Tacoma—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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