Duluth, MN

What the Data Says About DLH

Duluth, MN in Duluth, Minnesota handled 23,374 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 85.2% on-time departure rate. Of those flights, 3,461 experienced delays, 269 were cancelled, and 10 were diverted. The cancellation rate works out to 1.15%, the diversion rate to 0.04%, and the average delay when departures run late is 93.0 minutes. These figures are the baseline for comparing DLH against other airports in the same state and nationally.

Breaking down what drives delays at DLH, Carrier leads the pack. Carrier accounts for 51.6% of total delay minutes, followed by Late Aircraft at 19.2% and Weather at 17.9%. Weather contributes 17.9% of delay minutes at this airport, while security holds the smallest share at 0.2%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, April runs the cleanest at DLH with a 95.7% on-time rate, while December is the roughest at 89.1% — a 7-point swing between best and worst month. Volume peaks in August, when average flights hit 360. The busiest route from DLH is to MSP (Minneapolis), with 7,804 flights at a 87.7% on-time rate. Combine these numbers — 85.2% on-time, 93.0-minute average delay, 1.15% cancellation rate — and you have a concrete picture of departure reliability at Duluth, MN.