Friedman Memorial in December 2023

84.9%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 December 2023, reporting carriers scheduled 172 domestic departures from Friedman Memorial (SUN). 84.9% left less than 15 minutes late and 83.7% reached their destination on time; 0.6% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so SUN departures were 1.8 points above the national departure figure.

Flights arriving at SUN that month were on time 85.0% of the time (173 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 32%, air carrier 26% and extreme weather 25%.

On time 83.7%
Arrived 15+ minutes late 15.7%
Cancelled 0.6%
Diverted 0.0%

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

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

Measure	Dec 2023	Year earlier	SUN, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	84.9%	—	84.7%	83.1%
Arrived on time	83.7%	—	83.0%	83.8%
Cancelled	0.6%	—	1.1%	0.4%
Average departure delay (late minutes only)	17.2 min	—	16.2 min	11.6 min
Scheduled departures a day	6	—	8	19,013
Scheduled departures	172	—	2,745	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	172	100%	83.7%	2.9 min	0.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SUN–SLC	Sun Valley/Hailey/Ketchum to Salt Lake City	75	97.3%	-7.4 min	0.0%
SUN–DEN	Sun Valley/Hailey/Ketchum to Denver	42	73.8%	14.1 min	2.4%
SUN–LAX	Sun Valley/Hailey/Ketchum to Los Angeles	22	86.4%	14.9 min	0.0%
SUN–SFO	Sun Valley/Hailey/Ketchum to San Francisco	22	77.3%	-4.1 min	0.0%
SUN–ORD	Sun Valley/Hailey/Ketchum to Chicago	11	36.4%	21.3 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	25.6%	37.1%	745
Late-arriving aircraft	17.6%	38.8%	512
National Aviation System	31.5%	17.6%	917
Extreme weather	25.3%	6.2%	735
Security	0.0%	0.3%	0

2,909 delay minutes on 27 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 December 2023?

84.9% of 172 scheduled domestic departures left less than 15 minutes late, and 83.7% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 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 December 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.