Friedman Memorial in September 2023

94.0%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 2023, reporting carriers scheduled 116 domestic departures from Friedman Memorial (SUN). 94.0% left less than 15 minutes late and 90.5% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so SUN departures were 13.5 points above the national departure figure.

Flights arriving at SUN that month were on time 96.5% of the time (115 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 97% and national aviation system 3%.

On time 90.5%
Arrived 15+ minutes late 8.6%
Cancelled 0.0%
Diverted 0.9%

Every scheduled departure from SUN in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	SUN, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	94.0%	—	84.7%	80.5%
Arrived on time	90.5%	—	83.0%	80.1%
Cancelled	0.0%	—	1.1%	1.2%
Average departure delay (late minutes only)	8.4 min	—	16.2 min	14.1 min
Scheduled departures a day	4	—	8	18,978
Scheduled departures	116	—	2,745	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	116	100%	90.5%	-4.1 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	95.0%	0.1 min	0.0%
SUN–DEN	Sun Valley/Hailey/Ketchum to Denver	30	83.3%	-5.6 min	0.0%
SUN–SFO	Sun Valley/Hailey/Ketchum to San Francisco	13	84.6%	-7.3 min	0.0%
SUN–LAX	Sun Valley/Hailey/Ketchum to Los Angeles	11	90.9%	-18.6 min	0.0%
SUN–ORD	Sun Valley/Hailey/Ketchum to Chicago	2	100.0%	-6.5 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 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	97.2%	36.4%	942
Late-arriving aircraft	0.0%	38.3%	0
National Aviation System	2.8%	19.9%	27
Extreme weather	0.0%	5.1%	0
Security	0.0%	0.2%	0

969 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 2023?

94.0% of 116 scheduled domestic departures left less than 15 minutes late, and 90.5% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.