American Airlines flights from Saint Louis to Montreal

Recent searches for flights from Saint Louis to Montreal

Aug 2026
From$917*
Updated: 1 hour ago
Round tripIEconomy
Sep 2026
From$487*
Updated: 1 hour ago
Round tripIEconomy
Oct 2026
From$487*
Updated: 1 hour ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $487
cmp-daily-histogram-bars-legend-max-price-aria-label $1.3K
Displaying fares for August-2026
  • STL–YUL: cmp-view-offers-disclaimer. Find Offers
    25

    Tu

    AUG

  • STL–YUL, 08/26/26 – 09/02/26: From $1,022
    26

    We

  • STL–YUL, 08/27/26 – 09/03/26: From $1,152
    27

    Th

  • STL–YUL, 08/28/26 – 09/04/26: From $1,232
    28

    Fr

  • STL–YUL, 08/29/26 – 09/05/26: From $952
    29

    Sa

  • STL–YUL, 08/30/26 – 09/06/26: From $917
    30

    Su

  • STL–YUL, 08/31/26 – 09/07/26: From $1,296
    31

    Mo

  • STL–YUL, 09/01/26 – 09/08/26: From $948
    01

    Tu

    SEP

  • STL–YUL, 09/02/26 – 09/09/26: From $899
    02

    We

  • STL–YUL, 09/03/26 – 09/10/26: From $1,051
    03

    Th

  • STL–YUL, 09/04/26 – 09/11/26: From $1,023
    04

    Fr

  • STL–YUL, 09/05/26 – 09/12/26: From $905
    05

    Sa

  • STL–YUL, 09/06/26 – 09/13/26: From $836
    06

    Su

  • STL–YUL, 09/07/26 – 09/14/26: From $853
    07

    Mo

  • STL–YUL, 09/08/26 – 09/15/26: From $664
    08

    Tu

  • STL–YUL, 09/09/26 – 09/16/26: From $638
    09

    We

  • STL–YUL, 09/10/26 – 09/17/26: From $668
    10

    Th

  • STL–YUL, 09/11/26 – 09/18/26: From $638
    11

    Fr

  • STL–YUL, 09/12/26 – 09/19/26: From $708
    12

    Sa

  • STL–YUL, 09/13/26 – 09/20/26: From $793
    13

    Su

  • STL–YUL, 09/14/26 – 09/21/26: From $661
    14

    Mo

  • STL–YUL, 09/15/26 – 09/22/26: From $539
    15

    Tu

  • STL–YUL, 09/16/26 – 09/23/26: From $556
    16

    We

  • STL–YUL, 09/17/26 – 09/24/26: From $608
    17

    Th

  • STL–YUL, 09/18/26 – 09/25/26: From $504
    18

    Fr

  • STL–YUL, 09/19/26 – 09/26/26: From $571
    19

    Sa

  • STL–YUL, 09/20/26 – 09/27/26: From $798
    20

    Su

  • STL–YUL, 09/21/26 – 09/28/26: From $721
    21

    Mo

  • STL–YUL, 09/22/26 – 09/29/26: From $487
    22

    Tu

  • STL–YUL, 09/23/26 – 09/30/26: From $561
    23

    We

  • STL–YUL, 09/24/26 – 10/01/26: From $696
    24

    Th

    • range$487-$1,296

    DisclaimerFares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Fares listed may be Basic Economy, which class is subject to additional terms and conditions. Additional baggage fees and charges for optional products and services may apply.

    Find deals on Saint Louis to Montreal flights

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    keyboard_arrow_down

    Saint Louis (STL)to

    Montreal (YUL)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    10/31/26 - 11/07/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    12/03/26 - 12/10/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    12/09/26 - 12/16/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    11/07/26 - 11/14/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    11/12/26 - 11/19/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Montreal (YUL)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $487Fare subject to changes
    Updated: 1 hour ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

    Finding cheap flights from Saint Louis to Montreal

    Looking for lower fares on your trip from Saint Louis to Montreal? Here are a few ways to save.

    • Book early: Booking 1 to 3 months ahead can help you find lower fares
    • Be flexible with dates: Midweek travel, like Tuesdays and Wednesdays, can be more affordable
    • Travel during less busy periods: Flying outside peak travel times can help find lower fares and avoid crowds

    Earn up to $500 back on your next American Airlines flight plus, 30,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.

    Upgrade your flight with Main Cabin Extra

    Make your trip more comfortable with Main Cabin Extra. Enjoy benefits like:

    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
    • Early boarding: Preferred Group 5 boarding allows easier access to overhead bins.
    • Complimentary drinks: Enjoy beer, wine and spirits on flights with full beverage service.

    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Saint Louis to Montreal