Southwest® flights from Ontario/LA to Pittsburgh from $162

Promo Code

Low fares from Ontario/LA to Pittsburgh

$

Ontario/LA (ONT)to

Pittsburgh (PIT)
Depart: 11/12/2026

One-way

Basic

From
$162
Seen: 9 hrs ago

Ontario/LA (ONT)to

Pittsburgh (PIT)
Depart: 12/03/2026

One-way

Basic

From
$162
Seen: 3 hrs ago

Ontario/LA (ONT)to

Pittsburgh (PIT)
Depart: 01/25/2027

One-way

Basic

From
$162
Seen: 17 hrs ago

Ontario/LA (ONT)to

Pittsburgh (PIT)
Depart: 11/09/2026

One-way

Basic

From
$162
Seen: 4 hrs ago

Ontario/LA (ONT)to

Pittsburgh (PIT)
Depart: 01/19/2027

One-way

Basic

From
$162
Seen: 15 hrs ago

Ontario/LA (ONT)to

Pittsburgh (PIT)
Depart: 01/10/2027

One-way

Basic

From
$169
Seen: 13 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Ontario/LA to Pittsburgh

Oct 2026
From$524*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$162*
Seen: 9 hrs ago
One Way/Basic
Dec 2026
From$162*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $162
cmp-daily-histogram-bars-legend-max-price-aria-label $594
Displaying fares for October-2026
  • ONT–PIT, 10/21/2026: From $594
    21

    Wed

    OCT

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    25

    Sun

  • ONT–PIT, 10/26/2026: From $594
    26

    Mon

  • ONT–PIT, 10/27/2026: From $524
    27

    Tue

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

    Wed

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

    Thu

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    01

    Sun

    NOV

  • ONT–PIT, 11/02/2026: From $324
    02

    Mon

  • ONT–PIT, 11/03/2026: From $324
    03

    Tue

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • ONT–PIT, 11/05/2026: From $324
    05

    Thu

  • ONT–PIT, 11/06/2026: From $324
    06

    Fri

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    07

    Sat

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • ONT–PIT, 11/09/2026: From $162
    09

    Mon

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

    Tue

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

    Wed

  • ONT–PIT, 11/12/2026: From $162
    12

    Thu

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

    Fri

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

    Sat

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

    Sun

  • ONT–PIT, 11/16/2026: From $284
    16

    Mon

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

    Tue

  • ONT–PIT: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

  • ONT–PIT, 11/19/2026: From $254
    19

    Thu

  • ONT–PIT, 11/20/2026: From $254
    20

    Fri

    • Range$162-$594

    *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:
    Pittsburgh International Airport
    Distance:
    2090 miles

    Questions we hear the most

    There are 118 weekly flights from Ontario/LA to Pittsburgh on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Pittsburgh with Southwest, check out our Low Fare Calendar.
    You can rent a car at Pittsburgh International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Pittsburgh—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.

    Explore Flights from Other Popular Origins

    Popular Flights from Ontario/LA