Juneau International in September 2025

85.8%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 450 domestic departures from Juneau International (JNU). 85.8% left less than 15 minutes late and 83.1% reached their destination on time; 1.8% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so JNU departures were 2.7 points above the national departure figure.

A year earlier, in September 2024, the airport had 438 departures with 88.8% leaving on time: a change of −3.0 points, with flights up 3%.

Flights arriving at JNU that month were on time 84.9% of the time (450 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 50%, late-arriving aircraft 33% and national aviation system 10%.

On time 83.1%
Arrived 15+ minutes late 14.7%
Cancelled 1.8%
Diverted 0.4%

Every scheduled departure from JNU 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	JNU, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	85.8%	88.8%	83.0%	83.1%
Arrived on time	83.1%	86.8%	80.4%	82.8%
Cancelled	1.8%	1.4%	2.1%	0.5%
Average departure delay (late minutes only)	13.2 min	8.5 min	11.7 min	12.2 min
Scheduled departures a day	15	15	13	18,748
Scheduled departures	450	438	4,716	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	420	93%	83.1%	-1.7 min	1.9%
DL Delta Air Lines	30	7%	83.3%	26.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
JNU–SEA	Juneau to Seattle	180	76.7%	12.3 min	2.2%
JNU–ANC	Juneau to Anchorage	120	83.3%	-6.4 min	3.3%
JNU–SIT	Juneau to Sitka	60	90.0%	-8.9 min	0.0%
JNU–KTN	Juneau to Ketchikan	30	93.3%	-7.6 min	0.0%
JNU–PSG	Juneau to Petersburg	30	86.7%	-2.8 min	0.0%
JNU–YAK	Juneau to Yakutat	30	93.3%	-16.8 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	50.0%	34.3%	2,654
Late-arriving aircraft	33.4%	37.4%	1,775
National Aviation System	9.8%	22.6%	520
Extreme weather	5.2%	5.6%	275
Security	1.6%	0.1%	85

5,309 delay minutes on 66 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 JNU on time in September 2025?

85.8% of 450 scheduled domestic departures left less than 15 minutes late, and 83.1% 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, 88.8% of 438 departures left on time and 1.4% were cancelled, against 85.8% and 1.8% 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 JNU · methodology · corrections.