Duluth International in September 2024

90.4%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2024, reporting carriers scheduled 230 domestic departures from Duluth International (DLH). 90.4% left less than 15 minutes late and 90.9% reached their destination on time; 0.4% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so DLH departures were 6.0 points above the national departure figure.

A year earlier, in September 2023, the airport had 195 departures with 84.6% leaving on time: a change of +5.8 points, with flights up 18%.

Flights arriving at DLH that month were on time 86.5% of the time (230 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 62%, air carrier 19% and extreme weather 11%.

On time 90.9%
Arrived 15+ minutes late 8.7%
Cancelled 0.4%
Diverted 0.0%

Every scheduled departure from DLH in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	DLH, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	90.4%	84.6%	76.9%	84.4%
Arrived on time	90.9%	83.6%	72.7%	83.9%
Cancelled	0.4%	0.0%	3.6%	0.6%
Average departure delay (late minutes only)	6.4 min	17.4 min	24.5 min	10.6 min
Scheduled departures a day	8	7	7	19,421
Scheduled departures	230	195	2,429	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	152	66%	89.5%	-5.6 min	0.7%
YX Republic Airline	60	26%	96.7%	-8.2 min	0.0%
9E Endeavor Air	9	4%	66.7%	-0.6 min	0.0%
DL Delta Air Lines	9	4%	100.0%	-16.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DLH–MSP	Duluth to Minneapolis	115	92.2%	-10.4 min	0.0%
DLH–ORD	Duluth to Chicago	115	89.6%	-2.6 min	0.9%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	18.6%	38.6%	233
Late-arriving aircraft	62.1%	38.4%	780
National Aviation System	8.1%	18.2%	102
Extreme weather	11.2%	4.8%	141
Security	0.0%	0.1%	0

1,256 delay minutes on 20 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left DLH on time in September 2024?

90.4% of 230 scheduled domestic departures left less than 15 minutes late, and 90.9% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 84.6% of 195 departures left on time and 0.0% were cancelled, against 90.4% and 0.4% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for DLH · methodology · corrections.