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

Baltimore, MD (BWI) to Islip, NY (ISP) flight delay odds

75.6% of 1,218 official scheduled BWI-to-ISP flights arrived on time; 12.4% arrived at least 30 minutes late and 2.0% 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
75.6%arrived on time
12.4%30+ min late
2.0%cancelled
1,218scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.2%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+6.2 mincompleted flights

Which departure time was most reliable for BWI to ISP?

Among qualifying BWI-to-ISP departure window results, Late morning had the highest on-time rate: 85.8% of 365 flights. Night was lowest at 58.6% across 263 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning36585.8%6.0%0.8%
Afternoon38277.0%11.5%2.1%
Evening17573.1%15.4%1.1%
Night26358.6%22.1%4.2%

Which weekday was most reliable for BWI to ISP?

Among qualifying BWI-to-ISP weekday results, Friday had the highest on-time rate: 80.7% of 181 flights. Sunday was lowest at 62.1% across 161 flights.

DayFlightsOn time30+ minCancelled
Monday18273.6%14.8%4.4%
Tuesday18179.6%9.4%1.1%
Wednesday17679.0%11.9%0.6%
Thursday18073.9%14.4%1.1%
Friday18180.7%9.9%1.1%
Saturday15779.6%10.8%0.0%
Sunday16162.1%15.5%5.6%

Which airline was most reliable for BWI to ISP?

Only Southwest Airlines met the BWI-to-ISP airline threshold: 75.6% of 1,218 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,21875.6%12.4%2.0%

Which month was most reliable for BWI to ISP?

Among qualifying BWI-to-ISP month results, January 2026 had the highest on-time rate: 86.0% of 93 flights. July 2025 was lowest at 59.4% across 128 flights.

MonthFlightsOn time30+ minCancelled
July 202512859.4%16.4%6.2%
August 20259773.2%16.5%0.0%
September 20259083.3%8.9%0.0%
October 20259384.9%8.6%0.0%
November 20259178.0%9.9%2.2%
December 20259369.9%10.8%1.1%
January 20269386.0%4.3%3.2%
February 20268581.2%7.1%5.9%
March 20268967.4%20.2%4.5%
April 202610782.2%10.3%0.0%
May 202611471.1%21.1%0.0%
June 202613876.8%11.6%0.7%

What drove BWI to ISP delay minutes?

Late aircraft was the largest recorded BWI-to-ISP delay category, accounting for 50.3% of 12,330 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.6%
Late aircraft50.3%
National airspace4.8%
Weather3.1%
Security0.1%
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.