Gulfport-Biloxi International in September 2025

91.6%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 287 domestic departures from Gulfport-Biloxi International (GPT). 91.6% left less than 15 minutes late and 90.9% reached their destination on time; 0.7% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so GPT departures were 8.5 points above the national departure figure.

A year earlier, in September 2024, the airport had 290 departures with 80.7% leaving on time: a change of +10.9 points, with flights down 1%.

Flights arriving at GPT that month were on time 88.9% of the time (287 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 45% and national aviation system 6%.

On time 90.9%
Arrived 15+ minutes late 8.0%
Cancelled 0.7%
Diverted 0.3%

Every scheduled departure from GPT 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	GPT, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	91.6%	80.7%	83.0%	83.1%
Arrived on time	90.9%	77.6%	83.1%	82.8%
Cancelled	0.7%	2.4%	2.5%	0.5%
Average departure delay (late minutes only)	6.9 min	19.7 min	15.9 min	12.2 min
Scheduled departures a day	10	10	8	18,748
Scheduled departures	287	290	3,006	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	107	37%	89.7%	-8.0 min	0.0%
MQ Envoy Air	90	31%	87.8%	4.8 min	1.1%
OH PSA Airlines	90	31%	95.6%	-17.0 min	1.1%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GPT–ATL	Gulfport/Biloxi to Atlanta	107	89.7%	-8.0 min	0.0%
GPT–CLT	Gulfport/Biloxi to Charlotte	90	95.6%	-17.0 min	1.1%
GPT–DFW	Gulfport/Biloxi to Dallas/Fort Worth	90	87.8%	4.8 min	1.1%

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 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	45.7%	34.3%	790
Late-arriving aircraft	45.2%	37.4%	780
National Aviation System	6.1%	22.6%	106
Extreme weather	3.0%	5.6%	51
Security	0.0%	0.1%	0

1,727 delay minutes on 23 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 GPT on time in September 2025?

91.6% of 287 scheduled domestic departures left less than 15 minutes late, and 90.9% 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, 80.7% of 290 departures left on time and 2.4% were cancelled, against 91.6% and 0.7% 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 GPT · methodology · corrections.