American Airlines flights from Chicago to Buffalo

Recent searches for flights from Chicago to Buffalo

Aug 2026
From$265*
Updated: 1 minute ago
Round tripIEconomy
Sep 2026
From$265*
Updated: 1 minute ago
Round tripIEconomy
Oct 2026
From$265*
Updated: 1 minute ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $265
cmp-daily-histogram-bars-legend-max-price-aria-label $545
Displaying fares for August-2026
  • ORD–BUF, 08/09/26 – 08/22/26: From $503
    09

    Su

    AUG

  • CHI–BUF, 08/10/26 – 08/17/26: From $545
    10

    Mo

  • CHI–BUF, 08/11/26 – 08/18/26: From $471
    11

    Tu

  • CHI–BUF, 08/12/26 – 08/19/26: From $471
    12

    We

  • CHI–BUF, 08/13/26 – 08/20/26: From $535
    13

    Th

  • CHI–BUF, 08/14/26 – 08/21/26: From $535
    14

    Fr

  • CHI–BUF, 08/15/26 – 08/22/26: From $471
    15

    Sa

  • CHI–BUF, 08/16/26 – 08/23/26: From $508
    16

    Su

  • ORD–BUF, 08/17/26 – 08/24/26: From $508
    17

    Mo

  • CHI–BUF, 08/18/26 – 08/25/26: From $471
    18

    Tu

  • CHI–BUF, 08/19/26 – 08/26/26: From $471
    19

    We

  • ORD–BUF, 08/20/26 – 08/22/26: From $503
    20

    Th

  • ORD–BUF, 08/21/26 – 08/28/26: From $508
    21

    Fr

  • CHI–BUF, 08/22/26 – 08/29/26: From $471
    22

    Sa

  • CHI–BUF, 08/23/26 – 08/30/26: From $387
    23

    Su

  • ORD–BUF, 08/24/26 – 08/31/26: From $387
    24

    Mo

  • ORD–BUF, 08/25/26 – 09/01/26: From $382
    25

    Tu

  • CHI–BUF, 08/26/26 – 09/02/26: From $382
    26

    We

  • ORD–BUF, 08/27/26 – 09/03/26: From $387
    27

    Th

  • CHI–BUF, 08/28/26 – 09/04/26: From $387
    28

    Fr

  • ORD–BUF, 08/29/26 – 09/05/26: From $354
    29

    Sa

  • CHI–BUF, 08/30/26 – 09/06/26: From $265
    30

    Su

  • ORD–BUF, 08/31/26 – 09/07/26: From $293
    31

    Mo

  • ORD–BUF, 09/01/26 – 09/08/26: From $293
    01

    Tu

    SEP

  • CHI–BUF, 09/02/26 – 09/09/26: From $293
    02

    We

  • ORD–BUF, 09/03/26 – 09/10/26: From $293
    03

    Th

  • CHI–BUF, 09/04/26 – 09/11/26: From $265
    04

    Fr

  • CHI–BUF, 09/05/26 – 09/12/26: From $265
    05

    Sa

  • CHI–BUF: cmp-view-offers-disclaimer. Find Offers
    06

    Su

  • CHI–BUF: cmp-view-offers-disclaimer. Find Offers
    07

    Mo

  • CHI–BUF, 09/08/26 – 09/15/26: From $293
    08

    Tu

    • range$265-$545

    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 Chicago to Buffalo flights

    $
    keyboard_arrow_down

    Chicago (ORD)to

    Buffalo (BUF)
    09/05/26 - 09/07/26

    Round trip

    Economy

    from
    $265Fare subject to changes
    Updated: 10 hours ago

    Chicago (ORD)to

    Buffalo (BUF)
    09/08/26 - 09/15/26

    Round trip

    Economy

    from
    $293Fare subject to changes
    Updated: 21 hours ago

    Chicago (ORD)to

    Buffalo (BUF)
    09/05/26 - 09/12/26

    Round trip

    Economy

    from
    $265Fare subject to changes
    Updated: 1 minute ago

    Chicago (ORD)to

    Buffalo (BUF)
    08/30/26 - 09/06/26

    Round trip

    Economy

    from
    $265Fare subject to changes
    Updated: 1 minute ago

    Chicago (ORD)to

    Buffalo (BUF)
    09/04/26 - 09/11/26

    Round trip

    Economy

    from
    $265Fare subject to changes
    Updated: 1 minute ago

    Chicago (ORD)to

    Buffalo (BUF)
    10/23/26 - 10/30/26

    Round trip

    Economy

    from
    $265Fare subject to changes
    Updated: 1 minute ago

    Chicago (ORD)to

    Buffalo (BUF)
    10/30/26 - 11/06/26

    Round trip

    Economy

    from
    $265Fare subject to changes
    Updated: 1 minute ago

    Chicago (ORD)to

    Buffalo (BUF)
    09/11/26 - 09/18/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 1 minute 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 Chicago to Buffalo

    Looking for lower fares on your trip from Chicago to Buffalo? 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 Chicago to Buffalo