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)

Sep 2026
from$199*
Last seen: 9 hours ago
One-way/Economy
Oct 2026
from$184*
Last seen: 6 mins ago
One-way/Economy
Nov 2026
No results for this month.
cmp-daily-histogram-bars-legend-min-price-aria-label $184
Displaying fares for September-2026
  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    27

    Sun

    SEP

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    28

    Mon

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    29

    Tue

  • STL–ORD, Sep 30, 2026: from $199
    30

    Wed

  • STL–ORD, Oct 1, 2026: from $205
    01

    Thu

    OCT

  • STL–ORD, Oct 2, 2026: from $205
    02

    Fri

  • STL–ORD, Oct 3, 2026: from $199
    03

    Sat

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    04

    Sun

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    05

    Mon

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    06

    Tue

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    07

    Wed

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    08

    Thu

  • STL–ORD, Oct 9, 2026: from $199
    09

    Fri

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    10

    Sat

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

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    12

    Mon

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    13

    Tue

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    14

    Wed

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    15

    Thu

  • STL–ORD, Oct 16, 2026: from $184
    16

    Fri

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

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    18

    Sun

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    19

    Mon

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    20

    Tue

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

  • STL–ORD: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

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    25

    Sun

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    26

    Mon

    • Range$184-$205

    *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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