Alaska Airlines Flights from Portland to Missoula

Lowest fares from Portland to Missoula

Aug 2026
From$234*
Seen: 10 hours ago
Flight Type One Way|Saver
Sep 2026
From$139*
Seen: 19 hours ago
Flight Type One Way|Saver
Oct 2026
From$139*
Seen: 19 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $199
cmp-daily-histogram-bars-legend-max-price-aria-label $419
Displaying fares for August-2026
  • PDX–MSO, Aug 13, 2026: From $409
    13

    Th

    AUG

  • PDX–MSO, Aug 14, 2026: From $419
    14

    Fr

  • PDX–MSO, Aug 15, 2026: From $409
    15

    Sa

  • PDX–MSO, Aug 16, 2026: From $409
    16

    Su

  • PDX–MSO, Aug 17, 2026: From $419
    17

    Mo

  • PDX–MSO, Aug 18, 2026: From $324
    18

    Tu

  • PDX–MSO, Aug 19, 2026: From $324
    19

    We

  • PDX–MSO, Aug 20, 2026: From $334
    20

    Th

  • PDX–MSO, Aug 21, 2026: From $334
    21

    Fr

  • PDX–MSO, Aug 22, 2026: From $334
    22

    Sa

  • PDX–MSO, Aug 23, 2026: From $334
    23

    Su

  • PDX–MSO, Aug 24, 2026: From $324
    24

    Mo

  • PDX–MSO, Aug 25, 2026: From $244
    25

    Tu

  • PDX–MSO, Aug 26, 2026: From $234
    26

    We

  • PDX–MSO, Aug 27, 2026: From $244
    27

    Th

  • PDX–MSO, Aug 28, 2026: From $244
    28

    Fr

  • PDX–MSO, Aug 29, 2026: From $234
    29

    Sa

  • PDX–MSO, Aug 30, 2026: From $244
    30

    Su

  • PDX–MSO, Aug 31, 2026: From $244
    31

    Mo

  • PDX–MSO, Sep 1, 2026: From $199
    01

    Tu

    SEP

  • PDX–MSO, Sep 2, 2026: From $209
    02

    We

  • PDX–MSO, Sep 3, 2026: From $244
    03

    Th

  • PDX–MSO, Sep 4, 2026: From $244
    04

    Fr

  • PDX–MSO, Sep 5, 2026: From $209
    05

    Sa

  • PDX–MSO, Sep 6, 2026: From $199
    06

    Su

  • PDX–MSO, Sep 7, 2026: From $209
    07

    Mo

  • PDX–MSO, Sep 8, 2026: From $199
    08

    Tu

  • PDX–MSO, Sep 9, 2026: From $209
    09

    We

  • PDX–MSO, Sep 10, 2026: From $244
    10

    Th

  • PDX–MSO, Sep 11, 2026: From $209
    11

    Fr

  • PDX–MSO, Sep 12, 2026: From $209
    12

    Sa

    • Range$199-$419

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights Portland to Missoula.*

    $
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    One-way low-fare flights Portland to Missoula.*
    From
    To
    Fare Type
    Dates
    Price
    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Sep 30, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Nov 10, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Nov 11, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Nov 17, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Dec 15, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Sep 19, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Nov 7, 2026

    From

    $139

    Seen: 18 hours ago

    Portland (PDX)Missoula (MSO)One-way
    |
    Saver    		Depart: Sep 15, 2026

    From

    $139

    Seen: 18 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

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