Detroit Metro Wayne County in September 2025

87.9%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 2025, reporting carriers scheduled 10,014 domestic departures from Detroit Metro Wayne County (DTW). 87.9% left less than 15 minutes late and 86.8% reached their destination on time; 0.2% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so DTW departures were 4.8 points above the national departure figure.

A year earlier, in September 2024, the airport had 11,165 departures with 87.8% leaving on time: a change of +0.1 points, with flights down 10%.

Flights arriving at DTW that month were on time 88.1% of the time (10,006 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 50%, national aviation system 24% and late-arriving aircraft 20%.

On time 86.8%
Arrived 15+ minutes late 12.9%
Cancelled 0.2%
Diverted 0.2%

Every scheduled departure from DTW in September 2025, judged by arrival at the destination.

September 2025 against a year earlier, the airport's year and the nation

Measure	Sep 2025	Sep 2024	DTW, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	87.9%	87.8%	77.3%	83.1%
Arrived on time	86.8%	87.6%	75.4%	82.8%
Cancelled	0.2%	0.3%	1.9%	0.5%
Average departure delay (late minutes only)	9.2 min	8.2 min	17.7 min	12.2 min
Scheduled departures a day	334	372	334	18,748
Scheduled departures	10,014	11,165	121,889	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	4,813	48%	86.9%	-0.6 min	0.0%
OO SkyWest Airlines	2,282	23%	87.9%	0.3 min	0.0%
NK Spirit Airlines	931	9%	85.5%	-1.3 min	0.4%
YX Republic Airline	503	5%	88.3%	-1.4 min	1.0%
AA American Airlines	421	4%	86.0%	2.5 min	1.2%
WN Southwest Airlines	346	3%	87.9%	0.5 min	0.0%
UA United Airlines	259	3%	84.6%	-0.5 min	0.0%
F9 Frontier Airlines	155	2%	80.6%	17.3 min	0.6%
B6 JetBlue Airways	127	1%	79.5%	5.3 min	0.8%
OH PSA Airlines	86	1%	84.9%	2.3 min	0.0%
AS Alaska Airlines	57	1%	86.0%	-3.3 min	0.0%
MQ Envoy Air	34	0%	82.4%	-2.9 min	2.9%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DTW–ORD	Detroit to Chicago	481	80.5%	3.0 min	0.4%
DTW–ATL	Detroit to Atlanta	426	89.7%	-2.6 min	0.0%
DTW–LGA	Detroit to New York	365	82.2%	3.5 min	0.8%
DTW–EWR	Detroit to Newark	359	82.7%	3.3 min	1.4%
DTW–DFW	Detroit to Dallas/Fort Worth	289	81.3%	-0.6 min	1.7%
DTW–CLT	Detroit to Charlotte	283	88.7%	1.4 min	0.0%
DTW–PHL	Detroit to Philadelphia	266	86.8%	6.0 min	0.4%
DTW–DEN	Detroit to Denver	257	89.5%	-0.4 min	0.0%
DTW–MCO	Detroit to Orlando	250	86.8%	1.4 min	0.0%
DTW–DCA	Detroit to Washington	247	82.2%	2.1 min	0.0%
DTW–BOS	Detroit to Boston	244	72.5%	11.1 min	0.4%
DTW–LAS	Detroit to Las Vegas	239	81.6%	-0.8 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	49.9%	34.3%	43,113
Late-arriving aircraft	19.7%	37.4%	16,996
National Aviation System	24.1%	22.6%	20,801
Extreme weather	6.4%	5.6%	5,497
Security	0.1%	0.1%	62

86,469 delay minutes on 1,289 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 DTW on time in September 2025?

87.9% of 10,014 scheduled domestic departures left less than 15 minutes late, and 86.8% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 87.8% of 11,165 departures left on time and 0.3% were cancelled, against 87.9% and 0.2% in September 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for DTW · methodology · corrections.