American Airlines flights from Ontario to Greenville

Recent searches for flights from Ontario to Greenville

Jul 2026
From$1,052*
Updated: 15 hours ago
Round tripIEconomy
Aug 2026
From$374*
Updated: 10 hours ago
Round tripIEconomy
Sep 2026
From$369*
Updated: 15 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $374
cmp-daily-histogram-bars-legend-max-price-aria-label $1.1K
Displaying fares for July-2026
  • ONT–GSP, 07/31/26 – 08/07/26: From $1,052
    31

    Fr

    JUL

  • ONT–GSP, 08/01/26 – 08/08/26: From $1,053
    01

    Sa

  • ONT–GSP, 08/02/26 – 08/09/26: From $1,057
    02

    Su

  • ONT–GSP, 08/03/26 – 08/10/26: From $1,057
    03

    Mo

  • ONT–GSP, 08/04/26 – 08/11/26: From $1,043
    04

    Tu

  • ONT–GSP, 08/05/26 – 08/12/26: From $1,057
    05

    We

  • ONT–GSP, 08/06/26 – 08/13/26: From $1,057
    06

    Th

  • ONT–GSP, 08/07/26 – 08/14/26: From $852
    07

    Fr

  • ONT–GSP, 08/08/26 – 08/15/26: From $812
    08

    Sa

  • ONT–GSP, 08/09/26 – 08/16/26: From $852
    09

    Su

  • ONT–GSP, 08/10/26 – 08/17/26: From $852
    10

    Mo

  • ONT–GSP, 08/11/26 – 08/18/26: From $812
    11

    Tu

  • ONT–GSP, 08/12/26 – 08/19/26: From $812
    12

    We

  • ONT–GSP, 08/13/26 – 08/20/26: From $852
    13

    Th

  • ONT–GSP, 08/14/26 – 08/21/26: From $525
    14

    Fr

  • ONT–GSP, 08/15/26 – 08/22/26: From $503
    15

    Sa

  • ONT–GSP, 08/16/26 – 08/23/26: From $592
    16

    Su

  • ONT–GSP, 08/17/26 – 08/24/26: From $503
    17

    Mo

  • ONT–GSP, 08/18/26 – 08/25/26: From $503
    18

    Tu

  • ONT–GSP, 08/19/26 – 08/26/26: From $503
    19

    We

  • ONT–GSP, 08/20/26 – 08/25/26: From $374
    20

    Th

  • ONT–GSP, 08/21/26 – 08/28/26: From $433
    21

    Fr

  • ONT–GSP, 08/22/26 – 08/29/26: From $389
    22

    Sa

  • ONT–GSP, 08/23/26 – 08/30/26: From $532
    23

    Su

  • ONT–GSP, 08/24/26 – 08/31/26: From $411
    24

    Mo

  • ONT–GSP, 08/25/26 – 09/01/26: From $389
    25

    Tu

  • ONT–GSP, 08/26/26 – 09/02/26: From $389
    26

    We

  • ONT–GSP, 08/27/26 – 09/03/26: From $464
    27

    Th

  • ONT–GSP: cmp-view-offers-disclaimer. Find Offers
    28

    Fr

  • ONT–GSP: cmp-view-offers-disclaimer. Find Offers
    29

    Sa

  • ONT–GSP, 08/30/26 – 09/06/26: From $425
    30

    Su

    • range$374-$1,057

    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 Greenville flights

    $
    keyboard_arrow_down

    Ontario (ONT)to

    Greenville (GSP)
    09/29/26 - 10/06/26

    Round trip

    Economy

    from
    $369Fare subject to changes
    Updated: 15 hours ago

    Ontario (ONT)to

    Greenville (GSP)
    08/20/26 - 08/25/26

    Round trip

    Economy

    from
    $374Fare subject to changes
    Updated: 10 hours ago

    Ontario (ONT)to

    Greenville (GSP)
    10/10/26 - 10/17/26

    Round trip

    Economy

    from
    $389Fare subject to changes
    Updated: 20 minutes ago

    Ontario (ONT)to

    Greenville (GSP)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $389Fare subject to changes
    Updated: 20 minutes ago

    Ontario (ONT)to

    Greenville (GSP)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $389Fare subject to changes
    Updated: 20 minutes ago

    Ontario (ONT)to

    Greenville (GSP)
    09/01/26 - 09/08/26

    Round trip

    Economy

    from
    $389Fare subject to changes
    Updated: 20 minutes ago

    Ontario (ONT)to

    Greenville (GSP)
    08/22/26 - 08/29/26

    Round trip

    Economy

    from
    $389Fare subject to changes
    Updated: 20 minutes ago

    Ontario (ONT)to

    Greenville (GSP)
    08/25/26 - 09/01/26

    Round trip

    Economy

    from
    $389Fare subject to changes
    Updated: 20 minutes 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 Greenville

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