Ted Stevens Anchorage International in September 2025

89.2%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 1,726 domestic departures from Ted Stevens Anchorage International (ANC). 89.2% left less than 15 minutes late and 88.3% reached their destination on time; 0.3% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so ANC departures were 6.1 points above the national departure figure.

A year earlier, in September 2024, the airport had 1,670 departures with 87.5% leaving on time: a change of +1.7 points, with flights up 3%.

Flights arriving at ANC that month were on time 87.0% of the time (1,725 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 54%, late-arriving aircraft 31% and national aviation system 13%.

On time 88.3%
Arrived 15+ minutes late 11.4%
Cancelled 0.3%
Diverted 0.0%

Every scheduled departure from ANC 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	ANC, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	89.2%	87.5%	82.7%	83.1%
Arrived on time	88.3%	87.7%	83.5%	82.8%
Cancelled	0.3%	0.2%	1.1%	0.5%
Average departure delay (late minutes only)	8.2 min	7.7 min	11.7 min	12.2 min
Scheduled departures a day	58	56	55	18,748
Scheduled departures	1,726	1,670	20,008	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	1,264	73%	89.1%	-5.8 min	0.5%
DL Delta Air Lines	242	14%	88.0%	3.5 min	0.0%
UA United Airlines	147	9%	91.2%	-6.1 min	0.0%
AA American Airlines	62	4%	77.4%	32.3 min	0.0%
HA Hawaiian Airlines	11	1%	27.3%	26.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ANC–SEA	Anchorage to Seattle	625	86.4%	-0.7 min	0.3%
ANC–JNU	Anchorage to Juneau	120	87.5%	-1.1 min	0.0%
ANC–ORD	Anchorage to Chicago	100	88.0%	-8.7 min	0.0%
ANC–ADQ	Anchorage to Kodiak	90	87.8%	-9.9 min	1.1%
ANC–PDX	Anchorage to Portland	90	95.6%	-2.0 min	0.0%
ANC–MSP	Anchorage to Minneapolis	68	89.7%	-2.7 min	0.0%
ANC–BET	Anchorage to Bethel	60	85.0%	-3.2 min	1.7%
ANC–FAI	Anchorage to Fairbanks	60	98.3%	-14.7 min	0.0%
ANC–SFO	Anchorage to San Francisco	55	81.8%	5.1 min	0.0%
ANC–SCC	Anchorage to Deadhorse	44	93.2%	-13.8 min	0.0%
ANC–DEN	Anchorage to Denver	43	95.3%	-9.5 min	0.0%
ANC–DFW	Anchorage to Dallas/Fort Worth	32	65.6%	72.3 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	54.3%	34.3%	7,041
Late-arriving aircraft	31.0%	37.4%	4,027
National Aviation System	13.2%	22.6%	1,716
Extreme weather	1.4%	5.6%	187
Security	0.0%	0.1%	0

12,971 delay minutes on 196 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 ANC on time in September 2025?

89.2% of 1,726 scheduled domestic departures left less than 15 minutes late, and 88.3% 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, 87.5% of 1,670 departures left on time and 0.2% were cancelled, against 89.2% and 0.3% 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 ANC · methodology · corrections.