Friedman Memorial in December 2024

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 2024, reporting carriers scheduled 205 domestic departures from Friedman Memorial (SUN). 84.9% left less than 15 minutes late and 79.0% reached their destination on time; 2.0% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so SUN departures were 7.1 points above the national departure figure.

A year earlier, in December 2023, the airport had 172 departures with 84.9% leaving on time: a change of 0.0 points, with flights up 19%.

Flights arriving at SUN that month were on time 84.0% of the time (206 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 37%, national aviation system 34% and extreme weather 25%.

On time 79.0%
Arrived 15+ minutes late 18.0%
Cancelled 2.0%
Diverted 1.0%

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

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

Measure	Dec 2024	Dec 2023	SUN, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	84.9%	84.9%	84.7%	77.8%
Arrived on time	79.0%	83.7%	83.0%	78.1%
Cancelled	2.0%	0.6%	1.1%	0.7%
Average departure delay (late minutes only)	13.2 min	17.2 min	16.2 min	16.6 min
Scheduled departures a day	7	6	8	19,686
Scheduled departures	205	172	2,745	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	205	100%	79.0%	1.8 min	2.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SUN–SLC	Sun Valley/Hailey/Ketchum to Salt Lake City	70	90.0%	-12.3 min	1.4%
SUN–DEN	Sun Valley/Hailey/Ketchum to Denver	50	92.0%	-7.4 min	2.0%
SUN–LAX	Sun Valley/Hailey/Ketchum to Los Angeles	33	69.7%	12.9 min	3.0%
SUN–SFO	Sun Valley/Hailey/Ketchum to San Francisco	31	51.6%	27.5 min	3.2%
SUN–ORD	Sun Valley/Hailey/Ketchum to Chicago	13	84.6%	-3.7 min	0.0%
SUN–SEA	Sun Valley/Hailey/Ketchum to Seattle	8	37.5%	45.1 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 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	37.3%	34.3%	1,054
Late-arriving aircraft	3.4%	40.2%	97
National Aviation System	34.1%	17.8%	964
Extreme weather	25.1%	7.5%	709
Security	0.0%	0.2%	0

2,824 delay minutes on 37 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 2024?

84.9% of 205 scheduled domestic departures left less than 15 minutes late, and 79.0% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 84.9% of 172 departures left on time and 0.6% were cancelled, against 84.9% and 2.0% in December 2024.

Provenance

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