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
Monthly on-time trend
Best time of day to depart from DLH
Busiest routes from DLH
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| DLH → ORD | 1,230 | 75% | 27 min |
| DLH → MSP | 1,148 | 83% | 16 min |
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
Based on 4,666 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.