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Route Reliability

Buffalo → Baltimore

BUF–BWI · 281 miles · Buffalo Niagara International Airport to Baltimore/Washington International Thurgood Marshall Airport

87
Pretty Reliable
WanderNerd Reliability Score
87%
Arrive within 15 minutes
1 min
Average arrival delay
1.6%
Cancelled
1,732
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 87% of the time across 1,732 flights. No comparison to make.

What the data says

Morning flights do better here.

BUF–BWI flights departing between 3–6 AM arrived on time 96% of the time, versus 62% between 6–9 PM.

Wednesday comes out ahead.

A small edge: 90% on time on Wednesdays against 83% on Thursdays.

Flights on this route

The breakdown

On-time by weekday
  • Mon85%(248 flights)
  • Tue89%(251 flights)
  • Wed90%(247 flights)
  • Thu83%(250 flights)
  • Fri86%(250 flights)
  • Sat86%(220 flights)
  • Sun87%(236 flights)
On-time by departure window
  • 3–6 AM96%(236 flights)
  • 6–9 AM93%(380 flights)
  • 9 AM–12 PM93%(248 flights)
  • 12–3 PM86%(365 flights)
  • 3–6 PM75%(412 flights)
  • 6–9 PM62%(61 flights)
On-time trend by month
88%
May

Jun 81% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%141
July 202577%138
August 202587%147
September 202593%147
October 202585%149
November 202588%144
December 202585%146
January 202688%122
February 202692%125
March 202685%142
April 202691%148
May 202688%153

Same trip, other airports

Keep nerding

Based on 1,732 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.