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

Portland, ME (PWM) to New York, NY (LGA) flight delay odds

77.7% of 1,137 official scheduled PWM-to-LGA flights arrived on time; 13.4% arrived at least 30 minutes late and 4.4% 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 SIGNALHigher disruption
77.7%arrived on time
13.4%30+ min late
4.4%cancelled
1,137scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.2%all scheduled flights
120+ minutes late3.2%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+8.7 mincompleted flights

Which departure time was most reliable for PWM to LGA?

Among qualifying PWM-to-LGA departure window results, Early morning had the highest on-time rate: 86.0% of 386 flights. Evening was lowest at 57.6% across 144 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning38686.0%5.7%2.8%
Late morning22579.1%10.7%4.9%
Afternoon38275.9%16.2%4.2%
Evening14457.6%30.6%8.3%

Which weekday was most reliable for PWM to LGA?

Among qualifying PWM-to-LGA weekday results, Saturday had the highest on-time rate: 80.6% of 124 flights. Thursday was lowest at 75.6% across 164 flights.

DayFlightsOn time30+ minCancelled
Monday16977.5%12.4%5.9%
Tuesday17478.7%13.2%3.4%
Wednesday16877.4%11.9%4.8%
Thursday16475.6%16.5%4.9%
Friday16677.1%13.9%3.0%
Saturday12480.6%12.1%2.4%
Sunday17277.3%13.4%5.8%

Which airline was most reliable for PWM to LGA?

Only Republic Airways met the PWM-to-LGA airline threshold: 77.7% of 1,107 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Republic Airways1,10777.7%13.2%4.4%
American Airlines2777.8%18.5%3.7%
Delta Air Lines366.7%33.3%0.0%

Which month was most reliable for PWM to LGA?

Among qualifying PWM-to-LGA month results, August 2025 had the highest on-time rate: 91.9% of 86 flights. March 2026 was lowest at 61.4% across 83 flights.

MonthFlightsOn time30+ minCancelled
July 20258163.0%16.0%13.6%
August 20258691.9%4.7%2.3%
September 20258687.2%9.3%1.2%
October 202514178.7%13.5%2.1%
November 20258273.2%18.3%6.1%
December 20257664.5%25.0%1.3%
January 20266168.9%11.5%11.5%
February 20265477.8%7.4%9.3%
March 20268361.4%14.5%10.8%
April 202613479.9%17.2%0.7%
May 202613089.2%7.7%0.8%
June 202612381.3%14.6%3.3%

What drove PWM to LGA delay minutes?

Airline was the largest recorded PWM-to-LGA delay category, accounting for 37.0% of 18,562 BTS-attributed delay minutes during July 2025–June 2026.

Airline37.0%
Late aircraft25.6%
National airspace33.2%
Weather4.2%
Security0.0%
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.