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Airport Reliability

BWI · Baltimore

Baltimore/Washington International Thurgood Marshall Airport

74%
Departures within 15 minutes
16 min
Average departure delay
80%
Arrivals within 15 minutes
1.7%
Departures cancelled

Based on 95,594 departures and 95,597 arrivals. Data through May 2026.

What the data says

Morning flights do better here.

Departures from BWI departing between 3–6 AM arrived on time 91% of the time, versus 63% between 9 PM–12 AM.

Sunday scaries are real for this one.

Departures from BWI arrived on time 83% of the time on Tuesdays. On Sundays: 72%.

When BWI gets messy

On-time by departure window
  • 3–6 AM91%(802 flights)
  • 6–9 AM90%(22217 flights)
  • 9 AM–12 PM87%(16934 flights)
  • 12–3 PM78%(12989 flights)
  • 3–6 PM70%(15319 flights)
  • 6–9 PM68%(18286 flights)
  • 9 PM–12 AM63%(7222 flights)
On-time by weekday
  • Mon78%(13950 flights)
  • Tue83%(12857 flights)
  • Wed81%(12778 flights)
  • Thu78%(13913 flights)
  • Fri77%(14095 flights)
  • Sat79%(12243 flights)
  • Sun72%(13933 flights)
On-time trend by month
78%
May

Jun 69% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%8536
July 202567%8592
August 202580%8308
September 202586%7960
October 202582%8473
November 202584%7587
December 202571%7745
January 202684%6539
February 202684%6309
March 202676%7589
April 202681%8006
May 202678%8125

Airlines departing BWI

Busiest routes from BWI

Based on 95,594 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.