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Route Reliability

Birmingham → Baltimore

BHM–BWI · 682 miles · Birmingham–Shuttlesworth International Airport to Baltimore/Washington International Thurgood Marshall Airport

81
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
6 min
Average arrival delay
2.0%
Cancelled
346
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 81% of the time across 346 flights. No comparison to make.

What the data says

Morning flights do better here.

BHM–BWI flights departing between 9 AM–12 PM arrived on time 95% of the time, versus 58% between 6–9 PM.

Saturdays have been rough.

BHM–BWI flights arrived on time 90% of the time on Tuesdays and just 68% on Saturdays. That gap is worth planning around.

Ticking up lately.

BHM–BWI flights arrived on time 87% of the time over the last three months in the data, compared with 83% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon73%(51 flights)
  • Tue90%(52 flights)
  • Wed90%(52 flights)
  • Thu82%(51 flights)
  • Fri80%(51 flights)
  • Sat68%(22 flights)
  • Sun78%(60 flights)
On-time by departure window
  • 3–6 AM93%(28 flights)
  • 6–9 AM—(2 flights)
  • 9 AM–12 PM95%(79 flights)
  • 12–3 PM75%(122 flights)
  • 3–6 PM80%(84 flights)
  • 6–9 PM58%(24 flights)
On-time trend by month
92%
May

Jun 70% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%33
July 202569%32
August 202589%28
September 202592%26
October 202582%27
November 202574%31
December 202571%31
January 202692%26
February 202685%27
March 202681%26
April 202689%26
May 202692%26

Same trip, other airports

Keep nerding

Based on 346 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.