Delta Air Lines Detroit, MI (DTW) to Portland, ME (PWM) reliability

Among 397 scheduled Delta Air Lines flights from DTW to PWM, 85.4% arrived on time, 9.6% arrived at least 30 minutes late, and 0.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Delta Air Lines (DL) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption

85.4%arrived on time

9.6%30+ min late

0.5%cancelled

397scheduled flights

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

30+ minutes late9.6%

60+ minutes late5.8%

Cancelled0.5%

Average arrival-1.1 mincompleted flights

What did Delta Air Lines DTW to PWM record?

Delta Air Lines completed 99.2% of its scheduled reportable DTW to PWM flights in the observation window. 85.4% of all scheduled flights arrived less than 15 minutes late, while 5.8% arrived at least an hour late.

What were Delta Air Lines DTW to PWM disruption rates?

For Delta Air Lines DTW-to-PWM flights, 9.6% arrived at least 30 minutes late, 0.5% were cancelled, and 0.3% were diverted.

Compare all airlines on this route

What was the Delta Air Lines DTW to PWM scheduled cohort?

The Delta Air Lines DTW-to-PWM cohort contained 397 scheduled flights; 394 completed, 2 were cancelled, and 1 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.