American Airlines flights from Ontario to Monroe

Recent searches for flights from Ontario to Monroe

Sep 2026
From$520*
Updated: 1 hour ago
Round tripIEconomy
Oct 2026
From$418*
Updated: 1 hour ago
Round tripIEconomy
Nov 2026
From$418*
Updated: 1 hour ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $469
cmp-daily-histogram-bars-legend-max-price-aria-label $726
Displaying fares for September-2026
  • ONT–MLU, 09/11/26 – 09/18/26: From $650
    11

    Fr

    SEP

  • ONT–MLU, 09/12/26 – 09/19/26: From $520
    12

    Sa

  • ONT–MLU, 09/13/26 – 09/20/26: From $650
    13

    Su

  • ONT–MLU, 09/14/26 – 09/21/26: From $726
    14

    Mo

  • ONT–MLU, 09/15/26 – 09/22/26: From $520
    15

    Tu

  • ONT–MLU, 09/16/26 – 09/23/26: From $520
    16

    We

  • ONT–MLU, 09/17/26 – 09/24/26: From $696
    17

    Th

  • ONT–MLU, 09/18/26 – 09/25/26: From $650
    18

    Fr

  • ONT–MLU, 09/19/26 – 09/26/26: From $520
    19

    Sa

  • ONT–MLU, 09/20/26 – 09/27/26: From $650
    20

    Su

  • ONT–MLU, 09/21/26 – 09/28/26: From $650
    21

    Mo

  • ONT–MLU, 09/22/26 – 09/29/26: From $520
    22

    Tu

  • ONT–MLU, 09/23/26 – 09/30/26: From $520
    23

    We

  • ONT–MLU, 09/24/26 – 10/01/26: From $650
    24

    Th

  • ONT–MLU, 09/25/26 – 10/02/26: From $577
    25

    Fr

  • ONT–MLU, 09/26/26 – 10/03/26: From $520
    26

    Sa

  • ONT–MLU, 09/27/26 – 10/04/26: From $689
    27

    Su

  • ONT–MLU, 09/28/26 – 10/05/26: From $689
    28

    Mo

  • ONT–MLU, 09/29/26 – 10/06/26: From $520
    29

    Tu

  • ONT–MLU, 09/30/26 – 10/07/26: From $520
    30

    We

  • ONT–MLU, 10/01/26 – 10/08/26: From $643
    01

    Th

    OCT

  • ONT–MLU, 10/02/26 – 10/09/26: From $546
    02

    Fr

  • ONT–MLU, 10/03/26 – 10/10/26: From $520
    03

    Sa

  • ONT–MLU, 10/04/26 – 10/11/26: From $643
    04

    Su

  • ONT–MLU, 10/05/26 – 10/12/26: From $532
    05

    Mo

  • ONT–MLU, 10/06/26 – 10/13/26: From $469
    06

    Tu

  • ONT–MLU, 10/07/26 – 10/14/26: From $469
    07

    We

  • ONT–MLU, 10/08/26 – 10/15/26: From $532
    08

    Th

  • ONT–MLU: cmp-view-offers-disclaimer. Find Offers
    09

    Fr

  • ONT–MLU: cmp-view-offers-disclaimer. Find Offers
    10

    Sa

    • range$469-$726

    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 Ontario to Monroe flights

    $
    keyboard_arrow_down

    Ontario (ONT)to

    Monroe (MLU)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 22 hours ago

    Ontario (ONT)to

    Monroe (MLU)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 1 hour ago

    Ontario (ONT)to

    Monroe (MLU)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 1 hour ago

    Ontario (ONT)to

    Monroe (MLU)
    12/02/26 - 12/09/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 1 hour ago

    Ontario (ONT)to

    Monroe (MLU)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 1 hour ago

    Ontario (ONT)to

    Monroe (MLU)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 1 hour ago

    Ontario (ONT)to

    Monroe (MLU)
    10/31/26 - 11/07/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 1 hour ago

    Ontario (ONT)to

    Monroe (MLU)
    12/01/26 - 12/08/26

    Round trip

    Economy

    from
    $418Fare 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 Ontario to Monroe

    Looking for lower fares on your trip from Ontario to Monroe? 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

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    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Ontario to Monroe