Chicago (MDW) to Buffalo (BUF) flights
Southwest Airlines flies nonstop from Chicago Midway International Airport to Buffalo Niagara International Airport, with about 20 flights a week in July 2026. The 468-mile flight takes about 1h 24m gate to gate.
- Distance
- 468 mi · 753 km
- Flight time
- 1h 24m
- Airlines
- 1
- Seats filled
- 84%
Airlines flying MDW to BUF
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 20 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 107,320 | 1h 24m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
MDW to BUF flight schedule
7 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 8:05am and the last at 6:20pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 1156Southwest Airlines | 8:05am | 10:45am | 27 | 85% |
| WN 4217Southwest Airlines | 12:45pm | 3:15pm | 20 | 90% |
| WN 758Southwest Airlines | 1:55pm | 4:25pm | 6 | 93% |
| WN 4241Southwest Airlines | 3:15pm | 5:40pm | 4 | n/a |
| WN 3641Southwest Airlines | 6:00pm | 8:35pm | 8 | n/a |
| WN 3688Southwest Airlines | 6:05pm | 8:40pm | 4 | n/a |
| WN 1502Southwest Airlines | 6:20pm | 8:50pm | 12 | 83% |
Is MDW to BUF on time?
From September 2025 to August 2026, 74% of 829 flights arrived within 15 minutes of schedule and 1.4% were cancelled. Flights leaving around 7am were the most punctual (94%), those around 7pm the least (58%). Most delay time was caused by late-arriving aircraft (48%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 829 | 74% | 15 min | 1.4% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 7am to 8am | 126 | 94% | |
| 8am to 9am | 39 | 84% | |
| 9am to 10am | 71 | 81% | |
| 10am to 11am | 20 | 95% | |
| 12pm to 1pm | 110 | 79% | |
| 1pm to 2pm | 125 | 73% | |
| 2pm to 3pm | 17 | 53% | |
| 5pm to 6pm | 31 | 65% | |
| 6pm to 7pm | 133 | 64% | |
| 7pm to 8pm | 94 | 58% | |
| 8pm to 9pm | 32 | 65% | |
| 9pm to 10pm | 17 | 77% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 83 | 12,455 | |
| September 2025 | 82 | 11,352 | |
| October 2025 | 59 | 8,130 | |
| November 2025 | 55 | 6,851 | |
| December 2025 | 59 | 7,555 | |
| January 2026 | 30 | 3,230 | |
| February 2026 | 30 | 3,245 | |
| March 2026 | 74 | 8,765 | |
| April 2026 | 82 | 9,696 | |
| May 2026 | 83 | 10,777 | |
| June 2026 | 87 | 12,260 | |
| July 2026 | 90 | 13,004 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.