Friedman Memorial in May 2026

91.1%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 May 2026, reporting carriers scheduled 135 domestic departures from Friedman Memorial (SUN). 91.1% left less than 15 minutes late and 88.1% reached their destination on time; 0.0% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so SUN departures were 14.0 points above the national departure figure.

A year earlier, in May 2025, the airport had 144 departures with 84.0% leaving on time: a change of +7.1 points, with flights down 6%.

Flights arriving at SUN that month were on time 92.7% of the time (137 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 61%, late-arriving aircraft 18% and national aviation system 13%.

On time 88.1%
Arrived 15+ minutes late 11.1%
Cancelled 0.0%
Diverted 0.7%

Every scheduled departure from SUN in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	SUN, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	91.1%	84.0%	84.7%	77.1%
Arrived on time	88.1%	81.3%	83.0%	77.6%
Cancelled	0.0%	0.7%	1.1%	0.9%
Average departure delay (late minutes only)	10.6 min	18.6 min	16.2 min	16.0 min
Scheduled departures a day	5	5	8	20,391
Scheduled departures	135	144	2,745	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	135	100%	88.1%	-5.2 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	85	95.3%	-13.7 min	0.0%
SUN–DEN	Sun Valley/Hailey/Ketchum to Denver	37	83.8%	11.1 min	0.0%
SUN–SFO	Sun Valley/Hailey/Ketchum to San Francisco	9	33.3%	17.9 min	0.0%
SUN–LAX	Sun Valley/Hailey/Ketchum to Los Angeles	4	100.0%	-28.5 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	61.4%	33.0%	824
Late-arriving aircraft	17.5%	40.4%	235
National Aviation System	13.0%	20.5%	175
Extreme weather	8.0%	6.0%	108
Security	0.0%	0.1%	0

1,342 delay minutes on 15 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 May 2026?

91.1% of 135 scheduled domestic departures left less than 15 minutes late, and 88.1% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 84.0% of 144 departures left on time and 0.7% were cancelled, against 91.1% and 0.0% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; 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.