Bangor International in September 2025

82.6%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 518 domestic departures from Bangor International (BGR). 82.6% left less than 15 minutes late and 77.6% reached their destination on time; 1.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so BGR departures were 0.5 points below the national departure figure.

A year earlier, in September 2024, the airport had 594 departures with 87.9% leaving on time: a change of −5.3 points, with flights down 13%.

Flights arriving at BGR that month were on time 83.9% of the time (517 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, national aviation system 30% and air carrier 23%.

On time 77.6%
Arrived 15+ minutes late 21.4%
Cancelled 1.0%
Diverted 0.0%

Every scheduled departure from BGR 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	BGR, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	82.6%	87.9%	75.6%	83.1%
Arrived on time	77.6%	86.7%	72.0%	82.8%
Cancelled	1.0%	0.8%	3.3%	0.5%
Average departure delay (late minutes only)	16.8 min	7.8 min	25.5 min	12.2 min
Scheduled departures a day	17	20	11	18,748
Scheduled departures	518	594	3,983	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	217	42%	73.3%	20.3 min	0.9%
YX Republic Airline	165	32%	79.4%	2.0 min	1.2%
OH PSA Airlines	71	14%	84.5%	-0.8 min	1.4%
G4 Allegiant Air	31	6%	74.2%	26.8 min	0.0%
MQ Envoy Air	30	6%	86.7%	-4.5 min	0.0%
DL Delta Air Lines	4	1%	75.0%	2.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BGR–PHL	Bangor to Philadelphia	113	83.2%	-0.7 min	1.8%
BGR–ORD	Bangor to Chicago	109	74.3%	18.2 min	0.0%
BGR–DCA	Bangor to Washington	90	71.1%	16.8 min	1.1%
BGR–EWR	Bangor to Newark	81	72.8%	6.3 min	2.5%
BGR–CLT	Bangor to Charlotte	58	86.2%	12.7 min	0.0%
BGR–LGA	Bangor to New York	32	87.5%	-4.3 min	0.0%
BGR–PIE	Bangor to St. Petersburg	17	76.5%	33.9 min	0.0%
BGR–SFB	Bangor to Sanford	14	71.4%	18.2 min	0.0%
BGR–ATL	Bangor to Atlanta	4	75.0%	2.8 min	0.0%

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	22.9%	34.3%	2,267
Late-arriving aircraft	43.6%	37.4%	4,312
National Aviation System	29.8%	22.6%	2,944
Extreme weather	2.9%	5.6%	288
Security	0.8%	0.1%	78

9,889 delay minutes on 111 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 BGR on time in September 2025?

82.6% of 518 scheduled domestic departures left less than 15 minutes late, and 77.6% 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, 87.9% of 594 departures left on time and 0.8% were cancelled, against 82.6% and 1.0% 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 BGR · methodology · corrections.