Southwest® flights from Ontario/LA to Boston from $208

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Low fares from Ontario/LA to Boston

$

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/09/2026

One-way

Basic

From
$208
Seen: 3 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/05/2026

One-way

Basic

From
$208
Seen: 22 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/02/2026

One-way

Basic

From
$208
Seen: 19 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/30/2026

One-way

Basic

From
$208
Seen: 18 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 01/12/2027

One-way

Basic

From
$208
Seen: 10 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 01/16/2027

One-way

Basic

From
$208
Seen: 4 hrs ago

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Explore flights from Ontario/LA to Boston

Nov 2026
From$209*
Seen: 23 hrs ago
One Way/Basic
Dec 2026
From$208*
Seen: 22 hrs ago
One Way/Basic
Jan 2027
From$208*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $208
cmp-daily-histogram-bars-legend-max-price-aria-label $536
Displaying fares for November-2026
  • ONT–BOS, 11/08/2026: From $402
    08

    Sun

    NOV

  • ONT–BOS, 11/09/2026: From $385
    09

    Mon

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    10

    Tue

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    11

    Wed

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

    Thu

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

    Fri

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

    Sat

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • ONT–BOS, 11/18/2026: From $298
    18

    Wed

  • ONT–BOS, 11/19/2026: From $319
    19

    Thu

  • ONT–BOS, 11/20/2026: From $319
    20

    Fri

  • ONT–BOS, 11/21/2026: From $299
    21

    Sat

  • ONT–BOS, 11/22/2026: From $209
    22

    Sun

  • ONT–BOS, 11/23/2026: From $214
    23

    Mon

  • ONT–BOS, 11/24/2026: From $260
    24

    Tue

  • ONT–BOS, 11/25/2026: From $214
    25

    Wed

  • ONT–BOS, 11/26/2026: From $209
    26

    Thu

  • ONT–BOS, 11/27/2026: From $260
    27

    Fri

  • ONT–BOS, 11/28/2026: From $536
    28

    Sat

  • ONT–BOS, 11/29/2026: From $536
    29

    Sun

  • ONT–BOS, 11/30/2026: From $264
    30

    Mon

  • ONT–BOS, 12/01/2026: From $245
    01

    Tue

    DEC

  • ONT–BOS, 12/02/2026: From $208
    02

    Wed

  • ONT–BOS, 12/03/2026: From $209
    03

    Thu

  • ONT–BOS, 12/04/2026: From $209
    04

    Fri

  • ONT–BOS, 12/05/2026: From $208
    05

    Sat

  • ONT–BOS, 12/06/2026: From $209
    06

    Sun

  • ONT–BOS, 12/07/2026: From $209
    07

    Mon

    • Range$208-$536

    *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:
    Logan International Airport
    Distance:
    2566 miles

    Questions we hear the most

    There are 82 weekly flights from Ontario/LA to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Boston with Southwest, check out our Low Fare Calendar.
    You can rent a car at Logan International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Boston—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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