American Airlines flights from Ontario to Buffalo

Recent searches for flights from Ontario to Buffalo

Sep 2026
From$451*
Updated: 5 hours ago
Round tripIEconomy
Oct 2026
From$275*
Updated: 5 hours ago
Round tripIEconomy
Nov 2026
From$275*
Updated: 5 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $375
cmp-daily-histogram-bars-legend-max-price-aria-label $1.1K
Displaying fares for September-2026
  • ONT–BUF: cmp-view-offers-disclaimer. Find Offers
    14

    Mo

    SEP

  • ONT–BUF, 09/15/26 – 09/22/26: From $1,050
    15

    Tu

  • ONT–BUF, 09/16/26 – 09/19/26: From $1,018
    16

    We

  • ONT–BUF, 09/17/26 – 09/24/26: From $1,097
    17

    Th

  • ONT–BUF, 09/18/26 – 09/25/26: From $1,064
    18

    Fr

  • ONT–BUF, 09/19/26 – 09/26/26: From $929
    19

    Sa

  • ONT–BUF, 09/20/26 – 09/27/26: From $1,097
    20

    Su

  • ONT–BUF, 09/21/26 – 09/28/26: From $1,102
    21

    Mo

  • ONT–BUF, 09/22/26 – 09/29/26: From $767
    22

    Tu

  • ONT–BUF, 09/23/26 – 09/30/26: From $882
    23

    We

  • ONT–BUF, 09/24/26 – 10/01/26: From $882
    24

    Th

  • ONT–BUF, 09/25/26 – 10/02/26: From $882
    25

    Fr

  • ONT–BUF, 09/26/26 – 10/03/26: From $882
    26

    Sa

  • ONT–BUF, 09/27/26 – 10/04/26: From $887
    27

    Su

  • ONT–BUF, 09/28/26 – 10/05/26: From $924
    28

    Mo

  • ONT–BUF, 09/29/26 – 10/06/26: From $456
    29

    Tu

  • ONT–BUF, 09/30/26 – 10/07/26: From $451
    30

    We

  • ONT–BUF, 10/01/26 – 10/08/26: From $732
    01

    Th

    OCT

  • ONT–BUF, 10/02/26 – 10/09/26: From $676
    02

    Fr

  • ONT–BUF, 10/03/26 – 10/10/26: From $587
    03

    Sa

  • ONT–BUF, 10/04/26 – 10/11/26: From $803
    04

    Su

  • ONT–BUF, 10/05/26 – 10/12/26: From $641
    05

    Mo

  • ONT–BUF, 10/06/26 – 10/13/26: From $411
    06

    Tu

  • ONT–BUF, 10/07/26 – 10/14/26: From $375
    07

    We

  • ONT–BUF, 10/08/26 – 10/15/26: From $647
    08

    Th

  • ONT–BUF, 10/09/26 – 10/16/26: From $636
    09

    Fr

  • ONT–BUF, 10/10/26 – 10/17/26: From $419
    10

    Sa

  • ONT–BUF, 10/11/26 – 10/18/26: From $725
    11

    Su

  • ONT–BUF: cmp-view-offers-disclaimer. Find Offers
    12

    Mo

  • ONT–BUF: cmp-view-offers-disclaimer. Find Offers
    13

    Tu

    • range$375-$1,102

    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 Buffalo flights

    $
    keyboard_arrow_down

    Ontario (ONT)to

    Buffalo (BUF)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

    Buffalo (BUF)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

    Buffalo (BUF)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

    Buffalo (BUF)
    11/07/26 - 11/14/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

    Buffalo (BUF)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

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

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

    Buffalo (BUF)
    12/08/26 - 12/15/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 5 hours ago

    Ontario (ONT)to

    Buffalo (BUF)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $280Fare subject to changes
    Updated: 5 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 Ontario to Buffalo

    Looking for lower fares on your trip from Ontario 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

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    • 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 Ontario to Buffalo