Southwest Airlines departures from Portland, ME (PWM)

Among 1,654 scheduled Southwest Airlines flights departing PWM, 79.6% arrived on time, 9.7% arrived at least 30 minutes late, and 0.9% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Origin and marketing-carrier cohort · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable

79.6%arrived on time

9.7%30+ min late

0.9%cancelled

1,654scheduled flights

Based on July 2025–June 2026; on time means arrival less than 15 minutes late.

30+ minutes late9.7%

60+ minutes late5.0%

Cancelled0.9%

Diverted0.4%

What does the Southwest Airlines PWM sample show?

Southwest Airlines completed 98.7% of its scheduled departures from PWM; 5.0% arrived at least one hour late and 0.4% were diverted.

What were Southwest Airlines at PWM disruption rates?

For Southwest Airlines departures from PWM, 9.7% arrived at least 30 minutes late, 0.9% were cancelled, and 0.4% were diverted.

Compare all airlines at PWM

How large was the Southwest Airlines cohort at PWM?

The Southwest Airlines cohort at PWM contained 1,654 scheduled flights, including 1,632 completed flights, 15 cancellations, and 7 diversions.