BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
BUF→BWI

Buffalo, NY (BUF) to Baltimore, MD (BWI) flight delay odds

85.0% of 1,741 official scheduled BUF-to-BWI flights arrived on time; 6.7% arrived at least 30 minutes late and 1.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
85.0%arrived on time
6.7%30+ min late
1.6%cancelled
1,741scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.0%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+0.1 mincompleted flights

Which departure time was most reliable for BUF to BWI?

Among qualifying BUF-to-BWI departure window results, Early morning had the highest on-time rate: 92.6% of 606 flights. Evening was lowest at 64.0% across 178 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning60692.6%3.0%1.2%
Late morning29491.2%3.7%1.4%
Afternoon66380.8%9.2%1.8%
Evening17864.0%14.6%2.8%

Which weekday was most reliable for BUF to BWI?

Among qualifying BUF-to-BWI weekday results, Wednesday had the highest on-time rate: 90.0% of 250 flights. Monday was lowest at 79.8% across 258 flights.

DayFlightsOn time30+ minCancelled
Monday25879.8%8.1%3.5%
Tuesday25786.8%8.9%0.8%
Wednesday25090.0%4.4%1.2%
Thursday25383.0%6.7%1.2%
Friday25485.0%7.5%0.8%
Saturday22486.6%5.4%0.0%
Sunday24583.7%5.3%3.7%

Which airline was most reliable for BUF to BWI?

Only Southwest Airlines met the BUF-to-BWI airline threshold: 85.0% of 1,741 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,74185.0%6.7%1.6%

Which month was most reliable for BUF to BWI?

Among qualifying BUF-to-BWI month results, September 2025 had the highest on-time rate: 93.2% of 147 flights. July 2025 was lowest at 73.1% across 145 flights.

MonthFlightsOn time30+ minCancelled
July 202514573.1%15.2%4.8%
August 202514886.5%4.7%0.7%
September 202514793.2%3.4%0.0%
October 202514983.2%6.7%0.0%
November 202514487.5%6.2%0.0%
December 202515280.9%6.6%3.9%
January 202612882.8%5.5%4.7%
February 202613187.8%4.6%3.8%
March 202614582.1%11.0%0.7%
April 202614890.5%2.7%0.0%
May 202615487.0%5.8%0.6%
June 202615084.7%7.3%0.7%

What drove BUF to BWI delay minutes?

Late aircraft was the largest recorded BUF-to-BWI delay category, accounting for 49.2% of 13,032 BTS-attributed delay minutes during July 2025–June 2026.

Airline25.8%
Late aircraft49.2%
National airspace24.4%
Weather0.6%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.