Friedman Memorial in September 2024

94.2%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 2024, reporting carriers scheduled 137 domestic departures from Friedman Memorial (SUN). 94.2% left less than 15 minutes late and 92.7% reached their destination on time; 0.0% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so SUN departures were 9.8 points above the national departure figure.

A year earlier, in September 2023, the airport had 116 departures with 94.0% leaving on time: a change of +0.2 points, with flights up 18%.

Flights arriving at SUN that month were on time 95.6% of the time (135 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 90% and national aviation system 10%.

On time 92.7%
Arrived 15+ minutes late 7.3%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from SUN in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	SUN, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	94.2%	94.0%	84.7%	84.4%
Arrived on time	92.7%	90.5%	83.0%	83.9%
Cancelled	0.0%	0.0%	1.1%	0.6%
Average departure delay (late minutes only)	10.7 min	8.4 min	16.2 min	10.6 min
Scheduled departures a day	5	4	8	19,421
Scheduled departures	137	116	2,745	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	137	100%	92.7%	-1.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SUN–SLC	Sun Valley/Hailey/Ketchum to Salt Lake City	60	96.7%	-8.4 min	0.0%
SUN–DEN	Sun Valley/Hailey/Ketchum to Denver	55	98.2%	-6.9 min	0.0%
SUN–SFO	Sun Valley/Hailey/Ketchum to San Francisco	11	54.5%	36.4 min	0.0%
SUN–LAX	Sun Valley/Hailey/Ketchum to Los Angeles	10	90.0%	-7.1 min	0.0%
SUN–ORD	Sun Valley/Hailey/Ketchum to Chicago	1	0.0%	357.0 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 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	89.6%	38.6%	1,380
Late-arriving aircraft	0.0%	38.4%	0
National Aviation System	10.4%	18.2%	160
Extreme weather	0.0%	4.8%	0
Security	0.0%	0.1%	0

1,540 delay minutes on 10 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 SUN on time in September 2024?

94.2% of 137 scheduled domestic departures left less than 15 minutes late, and 92.7% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 94.0% of 116 departures left on time and 0.0% were cancelled, against 94.2% and 0.0% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SUN · methodology · corrections.