Southwest® flights from Buffalo/Niagara Falls to Chicago (O'Hare)

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Low fares from Buffalo/Niagara Falls to Chicago (O'Hare)

$

Buffalo/Niagara Falls (BUF)to

Chicago (Midway) (MDW)
Depart: 10/30/2026

One-way

Basic

From
$119
Seen: 2 hrs ago

Buffalo/Niagara Falls (BUF)to

Chicago (Midway) (MDW)
Depart: 09/05/2026

One-way

Basic

From
$119
Seen: 24 minutes ago

Buffalo/Niagara Falls (BUF)to

Chicago (Midway) (MDW)
Depart: 09/06/2026

One-way

Basic

From
$119
Seen: 2 hrs ago

Buffalo/Niagara Falls (BUF)to

Chicago (Midway) (MDW)
Depart: 08/27/2026

One-way

Basic

From
$140
Seen: 14 hrs ago

Buffalo/Niagara Falls (BUF)to

Chicago (Midway) (MDW)
Depart: 08/25/2026

One-way

Basic

From
$140
Seen: 10 hrs ago

Buffalo/Niagara Falls (BUF)to

Chicago (Midway) (MDW)
Depart: 11/11/2026

One-way

Basic

From
$140
Seen: 10 hrs ago

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Explore flights from Buffalo/Niagara Falls to Chicago (O'Hare)

Aug 2026
From$140*
Seen: 14 hrs ago
One Way/Basic
Sep 2026
From$119*
Seen: 24 minutes ago
One Way/Basic
Oct 2026
From$119*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $140
cmp-daily-histogram-bars-legend-max-price-aria-label $309
Displaying fares for August-2026
  • BUF–MDW, 08/05/2026: From $236
    05

    Wed

    AUG

  • BUF–MDW, 08/06/2026: From $268
    06

    Thu

  • BUF–MDW, 08/07/2026: From $268
    07

    Fri

  • BUF–MDW, 08/08/2026: From $236
    08

    Sat

  • BUF–MDW, 08/09/2026: From $278
    09

    Sun

  • BUF–MDW, 08/10/2026: From $283
    10

    Mon

  • BUF–MDW, 08/11/2026: From $236
    11

    Tue

  • BUF–MDW, 08/12/2026: From $236
    12

    Wed

  • BUF–MDW, 08/13/2026: From $278
    13

    Thu

  • BUF–MDW, 08/14/2026: From $268
    14

    Fri

  • BUF–MDW, 08/15/2026: From $236
    15

    Sat

  • BUF–MDW, 08/16/2026: From $309
    16

    Sun

  • BUF–MDW, 08/17/2026: From $268
    17

    Mon

  • BUF–MDW, 08/18/2026: From $236
    18

    Tue

  • BUF–MDW, 08/19/2026: From $236
    19

    Wed

  • BUF–MDW, 08/20/2026: From $241
    20

    Thu

  • BUF–MDW, 08/21/2026: From $241
    21

    Fri

  • BUF–MDW, 08/22/2026: From $236
    22

    Sat

  • BUF–MDW: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • BUF–MDW, 08/24/2026: From $241
    24

    Mon

  • BUF–MDW, 08/25/2026: From $140
    25

    Tue

  • BUF–MDW, 08/26/2026: From $140
    26

    Wed

  • BUF–MDW, 08/27/2026: From $140
    27

    Thu

  • BUF–MDW, 08/28/2026: From $170
    28

    Fri

  • BUF–MDW, 08/29/2026: From $140
    29

    Sat

  • BUF–MDW: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

  • BUF–MDW: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

  • BUF–MDW: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

  • BUF–MDW: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • BUF–MDW, 09/03/2026: From $140
    03

    Thu

  • BUF–MDW, 09/04/2026: From $170
    04

    Fri

    • Range$140-$309

    *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:
    Buffalo Niagara International Airport
    Arriving at:
    O'Hare International Airport
    Distance:
    474 miles

    Route Information

    42† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 42 weekly flights from Buffalo/Niagara Falls to Chicago (O'Hare) on Southwest Airlines.
    To find the lowest fares by day and time to fly Buffalo/Niagara Falls to Chicago (O'Hare) with Southwest, check out our Low Fare Calendar.
    You can rent a car at O'Hare International Airport book yours with your flight.
    Yes! Flights from Buffalo/Niagara Falls to Chicago (O'Hare)—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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