The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Buffalo Niagara International ⇄ Chicago Midway International BUF–MDW

Airlines flew 1,628 flights between Buffalo Niagara International BUF in Buffalo, NY and Chicago Midway International MDW in Chicago, IL in the twelve months to July 2026, both directions together: 211,521 passengers in 257,045 seats, 82% of them filled, and 238,459 pounds of freight. 468 miles, about 79 minutes in the air, on 2 airlines: Southwest Airlines Co. (1,625), Air Canada (3). Planning to fly it yourself? The weather and winds along this route right now.

1,628
flights, twelve months
BUF-MDW: 812 · MDW-BUF: 816
211,521
passengers
82% of seats filled
468
miles
about 79 minutes airborne
2
airlines
4 aircraft types

Flights by month both directions

048961431911/254/257/2510/251/264/261797/26
By month, as a table
flights
1/2567
2/2556
3/2564
4/25100
5/25114
6/25177
7/25191
8/25167
9/25164
10/25118
11/25109
12/25118
1/2660
2/2660
3/26148
4/26165
5/26165
6/26175
7/26179

Passengers by month

06,60813,21719,82626,4341/254/257/2510/251/264/2626,4347/26
By month, as a table
passengers
1/258,473
2/256,287
3/256,778
4/2512,064
5/2514,964
6/2521,890
7/2526,405
8/2524,631
9/2522,226
10/2515,983
11/2512,952
12/2514,249
1/266,751
2/266,465
3/2617,369
4/2618,944
5/2620,813
6/2624,704
7/2626,434

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Southwest Airlines Co. WN1,625211,35982%scheduled passenger service
Air Canada AC316277%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 737-700/700LR/Max 776813988,549
Boeing B737 Max 80048217569,462
Boeing 737-80037517553,348
Airbus Industrie A320-100/200370162

BUF → MDW this direction alone · flown January 2025 to July 2026

812 flights of 824 scheduled, 104,091 passengers in 128,465 seats, 79,932 pounds of freight. Southwest Airlines Co. 811; Air Canada 1.

MDW → BUF this direction alone · flown January 2025 to July 2026

816 flights of 824 scheduled, 107,430 passengers in 128,580 seats, 158,527 pounds of freight. Southwest Airlines Co. 814; Air Canada 2.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Buffalo Niagara International BUF and Chicago Midway International MDW; all routes.