How often are flights delayed at DLH?

18% of departures from Duluth International Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 21 minutes. The national on-time average over the same period was 78%.

What is the best time of day to depart from DLH?

Flights scheduled around 5 a.m. depart on time 91% of the time at DLH, versus 71% around 5 p.m.. Booking before noon is the usual rule of thumb here.

What is the worst month for delays at DLH?

In this dataset, January 2026 was the weakest month at DLH, with 63% of departures on time.

How often are flights cancelled at DLH?

1.9% of scheduled departures from DLH were cancelled in this period, compared with a national rate of 1.6%.

Duluth International Airport (DLH): Delays & On-Time Performance

Data through May 2026

Duluth International Airport (DLH) is a tale of two seasons: departures ran 94% on-time in October 2024 but sank to 63% in January 2026. Across the year it averages 82% against a national 78%, over roughly 7 departures a day to 2 destinations.

Departures on-time: 82%; left <15 min late
Avg dep delay: 21 min
Arrivals on-time: 77%
Cancelled: 1.9%
Destinations: 2; nonstop
Airlines: 4

Plan your departure from DLH

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time: Around 5 a.m.; 91% on-time
Best day to fly: Saturday; 81% on-time
Most reliable airline here: Republic Airways; 92% on-time from DLH
Cancellation risk: 1.9%; above the US average

Check routes from DLH ↓Compare nearby airports ↓

Monthly on-time trend

Best time of day to depart from DLH

By day of week

Day	On-time	Avg delay
Monday	80%	22 min
Tuesday	81%	20 min
Wednesday	78%	19 min
Thursday	80%	25 min
Friday	77%	23 min
Saturdaybest	81%	21 min
Sunday	77%	23 min

Next: compare the busiest routes from DLH ↓

Busiest routes from DLH

Route	Flights/12mo	On-time	Avg delay
DLH → ORD (Chicago)	1,230	75%	27 min
DLH → MSP (Minneapolis)	1,148	83%	16 min

Compare airlines departing DLH ↓

Where flights into DLH come from

Route	Flights/12mo	On-time	Avg delay
ORD (Chicago) → DLH	1,230	70%	24 min
MSP (Minneapolis) → DLH	1,149	83%	17 min

What causes delays at DLH

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing DLH.

Late-arriving aircraft21%
Airline operations45%
National airspace system16%
Weather17%

Alternative airports near Duluth

Other airports within 120 miles, compared on departure reliability.

Airport	Distance	On-time departures	Avg delay
HIB — Range Regional Airport	48 mi	86%	18 min
BRD — Brainerd Lakes Regional Airport	97 mi	86%	17 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at DLH

Airline	On-time departures	Avg delay	Flights
Republic Airways	92%	8 min	451
Delta Air Lines	85%	15 min	114
SkyWest Airlines	81%	22 min	3,969
Endeavor Air	75%	16 min	132

Frequently asked questions

How often are flights delayed at DLH?: 18% of departures from Duluth International Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 21 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from DLH?: Flights scheduled around 5 a.m. depart on time 91% of the time at DLH, versus 71% around 5 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at DLH?: In this dataset, January 2026 was the weakest month at DLH, with 63% of departures on time.
How often are flights cancelled at DLH?: 1.9% of scheduled departures from DLH were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 4,666 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.