Baltimore (BWI) to Buffalo (BUF) flights

Southwest Airlines flies nonstop from Baltimore/Washington International Thurgood Marshall Airport to Buffalo Niagara International Airport, with about 33 flights a week in July 2026. The 281-mile flight takes about 1h 8m gate to gate.

From
BWI
Baltimore
Baltimore/Washington International Thurgood Marshall Airport
To
BUF
Buffalo
Buffalo Niagara International Airport
Distance
281 mi · 452 km
Flight time
1h 8m
Airlines
1
Seats filled
76%
Flights a week, July 2026
1,715 flights and 205,250 passengers in 12 months
BUFBUFBWI
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying BWI to BUF

AirlineFlights a weekAircraftPassengers (12 months)Flight time
Southwest Airlines33Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800205,2501h 8m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

BWI to BUF flight schedule

11 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 8:35am and the last at 8:35pm. Times are local and can change; check with the airline before you book.

FlightDepartsArrivesDays flown in August 2026On time (12 months)
WN 572Southwest Airlines8:35am9:55am4n/a
WN 280Southwest Airlines9:55am11:10am1292%
WN 4462Southwest Airlines10:50am12:05pm4n/a
WN 3996Southwest Airlines11:15am12:30pm1283%
WN 3375Southwest Airlines11:35am12:45pm1275%
WN 2988Southwest Airlines4:15pm5:30pm4n/a
WN 4913Southwest Airlines4:20pm5:35pm4n/a
WN 3853Southwest Airlines5:15pm6:25pm2045%
WN 2816Southwest Airlines6:15pm7:30pm4n/a
WN 940Southwest Airlines7:45pm9:05pm1644%
WN 4568Southwest Airlines8:35pm9:50pm2065%

Is BWI to BUF on time?

From September 2025 to August 2026, 76% of 1,727 flights arrived within 15 minutes of schedule and 2.1% were cancelled. Flights leaving around 6am were the most punctual (89%), those around 10pm the least (57%). Most delay time was caused by late-arriving aircraft (46%).

AirlineFlightsOn timeAverage delayCancelled
Southwest Airlines1,72776%14 min2.1%

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 departureFlightsOn time, relativeOn time
6am to 7am291
89%
7am to 8am37
97%
10am to 11am273
88%
11am to 12pm92
88%
1pm to 2pm142
75%
2pm to 3pm45
80%
3pm to 4pm120
74%
4pm to 5pm75
65%
5pm to 6pm92
60%
6pm to 7pm114
63%
7pm to 8pm62
65%
8pm to 9pm92
74%
9pm to 10pm93
58%
10pm to 11pm163
57%

Flights by month

MonthFlightsFlights, relativePassengers
August 2025147
19,133
September 2025147
16,718
October 2025149
18,809
November 2025142
15,244
December 2025147
16,670
January 2026122
12,196
February 2026125
13,049
March 2026143
17,148
April 2026148
18,294
May 2026154
20,378
June 2026147
18,676
July 2026144
18,935

Related

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.