Flights from St. Louis, MO to Chicago, IL

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Best Deals on Flights From St. Louis, MO (STL) to Chicago, IL (ORD)

Nov 2026
from$187*
Last seen: 39 mins ago
One-way/Economy
Dec 2026
from$144*
Last seen: 3 hours ago
One-way/Economy
Jan 2027
No results for this month.
cmp-daily-histogram-bars-legend-min-price-aria-label $144
Displaying fares for November-2026
  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
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    NOV

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  • STL–ORD, Nov 14, 2026: from $187
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  • STL–ORD, Nov 16, 2026: from $197
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  • STL–ORD, Nov 20, 2026: from $225
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  • STL–ORD, Nov 21, 2026: from $190
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    DEC

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  • STL–ORD, Dec 11, 2026: from $144
    11

    Fri

    • Range$144-$225

    *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 St. Louis, MO to Chicago, IL 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®.

    St. Louis, MO Chicago, IL

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