Flights from Portland, OR to St. Louis, MO

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Best Deals on Flights From Portland, OR (PDX) to St. Louis, MO (STL)

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Sep 2026
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Oct 2026
from$163*
Last seen: 16 hours ago
One-way/Economy
Nov 2026
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cmp-daily-histogram-bars-legend-min-price-aria-label $163
Displaying fares for September-2026
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  • PDX–STL, Oct 8, 2026: from $487
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  • PDX–STL, Oct 13, 2026: from $163
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    • Range$163-$487

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Portland, OR to St. Louis, MO on Frontier

    $
    Flights Deals from Portland, OR to St. Louis, MO on Frontier
    From
    To
    Portland, OR (PDX)St. Louis, MO (STL)One-way
    /
    Discount Den Basic Fare    		Departing Mar 30, 2027

    From

    $298

    Last seen: 21 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Portland, OR St. Louis, MO

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