ORIGIN AIRPORT REPORT
PWM
Portland, ME (PWM) departure reliability
Of 10,949 scheduled reportable flights departing PWM, 77.4% arrived on time, 12.6% arrived at least 30 minutes late, and 2.7% were cancelled during July 2025–June 2026.
Source: U.S. Bureau of Transportation Statistics · Origin-airport cohort · Updated September 16, 2026
HISTORICAL ROUTE SIGNALVariable
77.4%arrived on time
12.6%30+ min late
2.7%cancelled
10,949scheduled flights
MOST-FLOWN DIRECTIONS
ALL ROUTES →Which route from PWM had the largest sample?
PWM to ORD was PWM's largest published route sample, with 1,486 scheduled flights and a 74.4% on-time rate during July 2025–June 2026.
PWM→ORDPortland, ME (PWM) to Chicago, IL (ORD)1,486 flights analyzedVariable74.4%on timePWM→BWIPortland, ME (PWM) to Baltimore, MD (BWI)1,341 flights analyzedLower disruption80.8%on timePWM→DCAPortland, ME (PWM) to Washington, DC (DCA)1,153 flights analyzedVariable71.3%on timePWM→LGAPortland, ME (PWM) to New York, NY (LGA)1,137 flights analyzedHigher disruption77.7%on timePWM→EWRPortland, ME (PWM) to Newark, NJ (EWR)1,095 flights analyzedVariable79.8%on timePWM→PHLPortland, ME (PWM) to Philadelphia, PA (PHL)731 flights analyzedVariable74.6%on timePWM→CLTPortland, ME (PWM) to Charlotte, NC (CLT)708 flights analyzedGenerally reliable80.2%on timePWM→IADPortland, ME (PWM) to Washington, DC (IAD)691 flights analyzedVariable83.8%on timePWM→ATLPortland, ME (PWM) to Atlanta, GA (ATL)642 flights analyzedLower disruption80.1%on timePWM→DTWPortland, ME (PWM) to Detroit, MI (DTW)609 flights analyzedGenerally reliable78.2%on timePWM→JFKPortland, ME (PWM) to New York, NY (JFK)406 flights analyzedHigher disruption76.8%on time
Which airline was most reliable departing PWM?
Among qualifying PWM airline departure results, Delta Air Lines had the highest on-time rate: 81.4% of 1,185 flights. SkyWest Airlines was lowest at 65.5% across 444 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Republic Airways | 3,493 | 79.3% | 11.7% | 3.8% |
| American Airlines | 1,953 | 75.8% | 14.3% | 1.9% |
| Southwest Airlines | 1,654 | 79.6% | 9.7% | 0.9% |
| Delta Air Lines | 1,185 | 81.4% | 10.6% | 0.8% |
| United Airlines | 851 | 75.7% | 13.0% | 2.1% |
| PSA Airlines | 717 | 71.5% | 16.0% | 6.0% |
| SkyWest Airlines | 444 | 65.5% | 20.3% | 2.7% |
| JetBlue Airways | 439 | 76.3% | 15.3% | 3.9% |
| Envoy Air | 204 | 77.9% | 11.3% | 3.9% |
| Frontier Airlines | 9 | 33.3% | 44.4% | 11.1% |
Origin report, not airport-wide operations.
These figures summarize the reported scheduled passenger flights in the dataset, not every flight or every airport process.