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Route Reliability

Baltimore → Grand Rapids

BWI–GRR · 528 miles · Baltimore/Washington International Thurgood Marshall Airport to Gerald R. Ford International Airport

83
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
9 min
Average arrival delay
0.7%
Cancelled
424
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines79% on time · 423 flights
  • Delta Air Lines100% on time · 1 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

BWI–GRR flights departing between 6–9 AM arrived on time 91% of the time, versus 50% between 3–6 PM.

Friday is doing you no favors.

BWI–GRR flights arrived on time 85% of the time on Tuesdays. On Fridays: 72%.

Slipping a little lately.

BWI–GRR flights arrived on time 76% of the time over the last three months in the data, compared with 79% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon75%(60 flights)
  • Tue85%(59 flights)
  • Wed82%(60 flights)
  • Thu80%(61 flights)
  • Fri72%(60 flights)
  • Sat73%(60 flights)
  • Sun83%(60 flights)
On-time by departure window
  • 6–9 AM91%(34 flights)
  • 9 AM–12 PM86%(97 flights)
  • 12–3 PM81%(181 flights)
  • 3–6 PM50%(12 flights)
  • 6–9 PM70%(54 flights)
  • 9 PM–12 AM60%(42 flights)
On-time trend by month
81%
May

Jun 71% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%48
July 202573%52
August 202579%33
September 202597%31
October 202581%31
November 202583%30
December 202581%31
January 202683%30
February 202674%27
March 202665%31
April 202683%35
May 202681%41

Same trip, other airports

Keep nerding

Based on 424 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.