Flights from Austin, TX to St. Louis, MO

Promo Code

Best Deals on Flights From Austin, TX (AUS) to St. Louis, MO (STL)

Nov 2026
from$122*
Last seen: 17 hours ago
One-way/Economy
Dec 2026
No results for this month.
Jan 2027
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cmp-daily-histogram-bars-legend-min-price-aria-label $122
Displaying fares for November-2026
  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    07

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    NOV

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  • AUS–STL, Nov 11, 2026: from $122
    11

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  • AUS–STL, Nov 12, 2026: from $128
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  • AUS–STL, Nov 13, 2026: from $122
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  • AUS–STL, Nov 15, 2026: from $128
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  • AUS–STL, Nov 16, 2026: from $128
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  • AUS–STL, Nov 19, 2026: from $369
    19

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  • AUS–STL, Nov 20, 2026: from $128
    20

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    21

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    DEC

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    • Range$122-$369

    *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 Austin, TX to St. Louis, MO on Frontier

    $
    *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®.

    Austin, TX St. Louis, MO

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