American Airlines flights from Harlingen to Detroit

Recent searches for flights from Harlingen to Detroit

Aug 2026
From$453*
Updated: 3 hours ago
Round tripIEconomy
Sep 2026
From$339*
Updated: 3 hours ago
Round tripIEconomy
Oct 2026
From$339*
Updated: 13 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $339
cmp-daily-histogram-bars-legend-max-price-aria-label $1.1K
Displaying fares for August-2026
  • HRL–DTW, 08/28/26 – 09/04/26: From $509
    28

    Fr

    AUG

  • HRL–DTW, 08/29/26 – 09/05/26: From $453
    29

    Sa

  • HRL–DTW, 08/30/26 – 09/06/26: From $509
    30

    Su

  • HRL–DTW, 08/31/26 – 09/07/26: From $509
    31

    Mo

  • HRL–DTW, 09/01/26 – 09/08/26: From $453
    01

    Tu

    SEP

  • HRL–DTW, 09/02/26 – 09/09/26: From $691
    02

    We

  • HRL–DTW, 09/03/26 – 09/10/26: From $639
    03

    Th

  • HRL–DTW, 09/04/26 – 09/11/26: From $634
    04

    Fr

  • HRL–DTW, 09/05/26 – 09/12/26: From $374
    05

    Sa

  • HRL–DTW, 09/06/26 – 09/13/26: From $1,069
    06

    Su

  • HRL–DTW, 09/07/26 – 09/14/26: From $1,112
    07

    Mo

  • HRL–DTW, 09/08/26 – 09/15/26: From $474
    08

    Tu

  • HRL–DTW, 09/09/26 – 09/16/26: From $374
    09

    We

  • HRL–DTW, 09/10/26 – 09/17/26: From $787
    10

    Th

  • HRL–DTW, 09/11/26 – 09/18/26: From $765
    11

    Fr

  • HRL–DTW, 09/12/26 – 09/19/26: From $384
    12

    Sa

  • HRL–DTW, 09/13/26 – 09/20/26: From $740
    13

    Su

  • HRL–DTW, 09/14/26 – 09/21/26: From $592
    14

    Mo

  • HRL–DTW, 09/15/26 – 09/22/26: From $374
    15

    Tu

  • HRL–DTW, 09/16/26 – 09/23/26: From $397
    16

    We

  • HRL–DTW, 09/17/26 – 09/24/26: From $544
    17

    Th

  • HRL–DTW, 09/18/26 – 09/25/26: From $544
    18

    Fr

  • HRL–DTW, 09/19/26 – 09/26/26: From $339
    19

    Sa

  • HRL–DTW, 09/20/26 – 09/27/26: From $680
    20

    Su

  • HRL–DTW, 09/21/26 – 09/28/26: From $652
    21

    Mo

  • HRL–DTW, 09/22/26 – 09/29/26: From $339
    22

    Tu

  • HRL–DTW, 09/23/26 – 09/30/26: From $389
    23

    We

  • HRL–DTW, 09/24/26 – 10/01/26: From $484
    24

    Th

  • HRL–DTW: cmp-view-offers-disclaimer. Find Offers
    25

    Fr

  • HRL–DTW: cmp-view-offers-disclaimer. Find Offers
    26

    Sa

  • HRL–DTW, 09/27/26 – 10/04/26: From $503
    27

    Su

    • range$339-$1,112

    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 Harlingen to Detroit flights

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    Harlingen (HRL)to

    Detroit (DTW)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 13 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    10/03/26 - 10/10/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    10/14/26 - 10/21/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours ago

    Harlingen (HRL)to

    Detroit (DTW)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $339Fare subject to changes
    Updated: 3 hours 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 Harlingen to Detroit

    Looking for lower fares on your trip from Harlingen to Detroit? 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 Harlingen to Detroit