Southwest® flights from Ontario/LA to Charleston from $210

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Low fares from Ontario/LA to Charleston

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Ontario/LA (ONT)to

Charleston (CHS)
Depart: 12/08/2026

One-way

Basic

From
$210
Seen: 8 hrs ago

Ontario/LA (ONT)to

Charleston (CHS)
Depart: 12/09/2026

One-way

Basic

From
$210
Seen: 6 hrs ago

Ontario/LA (ONT)to

Charleston (CHS)
Depart: 01/07/2027

One-way

Basic

From
$220
Seen: 19 hrs ago

Ontario/LA (ONT)to

Charleston (CHS)
Depart: 12/11/2026

One-way

Basic

From
$240
Seen: 10 hrs ago

Ontario/LA (ONT)to

Charleston (CHS)
Depart: 01/29/2027

One-way

Basic

From
$245
Seen: 9 hrs ago

Ontario/LA (ONT)to

Charleston (CHS)
Depart: 02/11/2027

One-way

Basic

From
$264
Seen: 3 hrs ago

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Explore flights from Ontario/LA to Charleston

Nov 2026
From$329*
Seen: 18 hrs ago
One Way/Basic
Dec 2026
From$210*
Seen: 6 hrs ago
One Way/Basic
Jan 2027
From$220*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $210
Displaying fares for November-2026
  • ONT–CHS: cmp-view-offers-disclaimer. Find Offers
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    NOV

  • ONT–CHS, 11/12/2026: From $599
    12

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  • ONT–CHS, 11/14/2026: From $599
    14

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  • ONT–CHS, 11/15/2026: From $599
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  • ONT–CHS, 11/16/2026: From $534
    16

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    19

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    20

    Fri

  • ONT–CHS, 11/21/2026: From $529
    21

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    22

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    23

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    24

    Tue

  • ONT–CHS, 11/25/2026: From $329
    25

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    26

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    27

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    28

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    29

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    30

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    DEC

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    04

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    05

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    06

    Sun

  • ONT–CHS, 12/07/2026: From $275
    07

    Mon

  • ONT–CHS, 12/08/2026: From $210
    08

    Tue

  • ONT–CHS, 12/09/2026: From $210
    09

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    10

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    • Range$210-$599

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    LA/Ontario International Airport
    Arriving at:
    Charleston International Airport
    Distance:
    2159 miles

    Questions we hear the most

    There are 56 weekly flights from Ontario/LA to Charleston on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Charleston with Southwest, check out our Low Fare Calendar.
    You can rent a car at Charleston International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Charleston—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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