American Airlines flights from Pittsburgh to Ontario

Recent searches for flights from Pittsburgh to Ontario

Sep 2026
From$469*
Updated: 10 hours ago
Round tripIEconomy
Oct 2026
From$311*
Updated: 10 hours ago
Round tripIEconomy
Nov 2026
From$311*
Updated: 10 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $311
cmp-daily-histogram-bars-legend-max-price-aria-label $1.1K
Displaying fares for September-2026
  • PIT–ONT, 09/15/26 – 09/22/26: From $1,097
    15

    Tu

    SEP

  • PIT–ONT, 09/16/26 – 09/23/26: From $1,097
    16

    We

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

    Th

  • PIT–ONT, 09/18/26 – 09/25/26: From $1,102
    18

    Fr

  • PIT–ONT, 09/19/26 – 09/26/26: From $1,086
    19

    Sa

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

    Su

  • PIT–ONT, 09/21/26 – 10/23/26: From $751
    21

    Mo

  • PIT–ONT, 09/22/26 – 09/29/26: From $854
    22

    Tu

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

    We

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

    Th

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

    Fr

  • PIT–ONT, 09/26/26 – 10/03/26: From $854
    26

    Sa

  • PIT–ONT, 09/27/26 – 10/04/26: From $882
    27

    Su

  • PIT–ONT, 09/28/26 – 10/05/26: From $746
    28

    Mo

  • PIT–ONT, 09/29/26 – 10/06/26: From $469
    29

    Tu

  • PIT–ONT, 09/30/26 – 10/07/26: From $568
    30

    We

  • PIT–ONT, 10/01/26 – 10/08/26: From $801
    01

    Th

    OCT

  • PIT–ONT, 10/02/26 – 10/09/26: From $513
    02

    Fr

  • PIT–ONT, 10/03/26 – 10/10/26: From $469
    03

    Sa

  • PIT–ONT, 10/04/26 – 10/11/26: From $587
    04

    Su

  • PIT–ONT, 10/05/26 – 10/12/26: From $377
    05

    Mo

  • PIT–ONT, 10/06/26 – 10/13/26: From $311
    06

    Tu

  • PIT–ONT, 10/07/26 – 10/14/26: From $329
    07

    We

  • PIT–ONT, 10/08/26 – 10/15/26: From $427
    08

    Th

  • PIT–ONT, 10/09/26 – 10/16/26: From $399
    09

    Fr

  • PIT–ONT, 10/10/26 – 10/17/26: From $355
    10

    Sa

  • PIT–ONT, 10/11/26 – 10/18/26: From $720
    11

    Su

  • PIT–ONT, 10/12/26 – 10/19/26: From $665
    12

    Mo

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

    Tu

  • PIT–ONT: cmp-view-offers-disclaimer. Find Offers
    14

    We

    • range$311-$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 Pittsburgh to Ontario flights

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    Pittsburgh (PIT)to

    Ontario (ONT)
    12/08/26 - 12/15/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    12/02/26 - 12/09/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    12/05/26 - 12/12/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    11/07/26 - 11/14/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 hours ago

    Pittsburgh (PIT)to

    Ontario (ONT)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $311Fare subject to changes
    Updated: 10 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.

    Citi / AAdvantage credit card offer.