Friedman Memorial in April 2025

96.7%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 April 2025, reporting carriers scheduled 122 domestic departures from Friedman Memorial (SUN). 96.7% left less than 15 minutes late and 93.4% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so SUN departures were 16.1 points above the national departure figure.

A year earlier, in April 2024, the airport had 99 departures with 92.9% leaving on time: a change of +3.8 points, with flights up 23%.

Flights arriving at SUN that month were on time 96.7% of the time (122 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 60% and national aviation system 41%.

On time 93.4%
Arrived 15+ minutes late 6.6%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from SUN in April 2025, judged by arrival at the destination.

April 2025 against a year earlier, the airport's year and the nation

Measure	Apr 2025	Apr 2024	SUN, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	96.7%	92.9%	84.7%	80.6%
Arrived on time	93.4%	90.9%	83.0%	79.5%
Cancelled	0.0%	0.0%	1.1%	0.8%
Average departure delay (late minutes only)	5.8 min	9.6 min	16.2 min	14.1 min
Scheduled departures a day	4	3	8	19,465
Scheduled departures	122	99	2,745	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	122	100%	93.4%	-7.4 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	90	98.9%	-11.6 min	0.0%
SUN–DEN	Sun Valley/Hailey/Ketchum to Denver	30	76.7%	5.5 min	0.0%
SUN–LAX	Sun Valley/Hailey/Ketchum to Los Angeles	1	100.0%	-6.0 min	0.0%
SUN–SFO	Sun Valley/Hailey/Ketchum to San Francisco	1	100.0%	-21.0 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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	59.5%	32.7%	506
Late-arriving aircraft	0.0%	39.4%	0
National Aviation System	40.5%	22.2%	344
Extreme weather	0.0%	5.5%	0
Security	0.0%	0.2%	0

850 delay minutes on 8 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 April 2025?

96.7% of 122 scheduled domestic departures left less than 15 minutes late, and 93.4% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 92.9% of 99 departures left on time and 0.0% were cancelled, against 96.7% and 0.0% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2025; 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.