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

Baltimore, MD (BWI) to Grand Rapids, MI (GRR) flight delay odds

74.3% of 432 official scheduled BWI-to-GRR flights arrived on time; 14.1% arrived at least 30 minutes late and 0.9% 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
74.3%arrived on time
14.1%30+ min late
0.9%cancelled
432scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.2%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+8.7 mincompleted flights

Which departure time was most reliable for BWI to GRR?

Among qualifying BWI-to-GRR departure window results, Late morning had the highest on-time rate: 80.4% of 97 flights. Night was lowest at 56.6% across 53 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning9780.4%9.3%2.1%
Afternoon20277.7%9.9%0.0%
Evening5664.3%21.4%1.8%
Night5356.6%35.8%1.9%

Which weekday was most reliable for BWI to GRR?

Among qualifying BWI-to-GRR weekday results, Thursday had the highest on-time rate: 80.3% of 61 flights. Saturday was lowest at 67.2% across 64 flights.

DayFlightsOn time30+ minCancelled
Monday6172.1%14.8%1.6%
Tuesday6274.2%12.9%1.6%
Wednesday6078.3%15.0%0.0%
Thursday6180.3%11.5%0.0%
Friday6070.0%13.3%0.0%
Saturday6467.2%20.3%0.0%
Sunday6478.1%10.9%3.1%

Which airline was most reliable for BWI to GRR?

Only Southwest Airlines met the BWI-to-GRR airline threshold: 74.3% of 432 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines43274.3%14.1%0.9%

Which month was most reliable for BWI to GRR?

Among qualifying BWI-to-GRR month results, September 2025 had the highest on-time rate: 96.7% of 30 flights. June 2026 was lowest at 49.1% across 57 flights.

MonthFlightsOn time30+ minCancelled
July 20255371.7%20.8%1.9%
August 20253375.8%15.2%0.0%
September 20253096.7%0.0%0.0%
October 20253180.6%9.7%0.0%
November 20253083.3%13.3%0.0%
December 20253177.4%3.2%0.0%
January 20263180.6%3.2%3.2%
February 20262871.4%10.7%3.6%
March 20263164.5%22.6%0.0%
April 20263680.6%2.8%0.0%
May 20264180.5%17.1%0.0%
June 20265749.1%31.6%1.8%

What drove BWI to GRR delay minutes?

Late aircraft was the largest recorded BWI-to-GRR delay category, accounting for 47.6% of 5,821 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.2%
Late aircraft47.6%
National airspace11.0%
Weather8.2%
Security1.0%
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.