Salt Lake City International in March 2026

83.8%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 March 2026, reporting carriers scheduled 10,632 domestic departures from Salt Lake City International (SLC). 83.8% left less than 15 minutes late and 84.5% reached their destination on time; 1.2% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so SLC departures were 11.0 points above the national departure figure.

A year earlier, in March 2025, the airport had 10,276 departures with 84.7% leaving on time: a change of −0.9 points, with flights up 3%.

Flights arriving at SLC that month were on time 83.4% of the time (10,626 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 30% and national aviation system 19%.

On time 84.5%
Arrived 15+ minutes late 14.0%
Cancelled 1.2%
Diverted 0.2%

Every scheduled departure from SLC in March 2026, judged by arrival at the destination.

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

Measure	Mar 2026	Mar 2025	SLC, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	83.8%	84.7%	84.0%	72.8%
Arrived on time	84.5%	83.9%	83.8%	73.2%
Cancelled	1.2%	0.2%	0.8%	2.9%
Average departure delay (late minutes only)	11.1 min	10.7 min	11.0 min	20.3 min
Scheduled departures a day	354	343	323	20,403
Scheduled departures	10,632	10,276	117,896	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	4,764	45%	83.8%	-1.2 min	1.7%
OO SkyWest Airlines	3,193	30%	90.9%	-4.1 min	0.3%
WN Southwest Airlines	1,011	10%	76.4%	2.4 min	0.9%
UA United Airlines	531	5%	78.7%	8.3 min	2.4%
AA American Airlines	497	5%	80.1%	10.3 min	1.2%
F9 Frontier Airlines	374	4%	84.5%	-6.2 min	1.9%
AS Alaska Airlines	173	2%	74.6%	9.5 min	2.9%
B6 JetBlue Airways	89	1%	67.4%	16.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SLC–DEN	Salt Lake City to Denver	672	79.8%	0.2 min	0.7%
SLC–PHX	Salt Lake City to Phoenix	582	86.6%	-3.9 min	0.7%
SLC–LAX	Salt Lake City to Los Angeles	422	88.2%	-9.2 min	0.7%
SLC–DFW	Salt Lake City to Dallas/Fort Worth	358	82.7%	3.7 min	1.4%
SLC–LAS	Salt Lake City to Las Vegas	343	78.4%	-0.6 min	1.2%
SLC–SEA	Salt Lake City to Seattle	335	81.5%	2.4 min	3.3%
SLC–SFO	Salt Lake City to San Francisco	325	83.1%	-3.2 min	0.9%
SLC–ORD	Salt Lake City to Chicago	317	67.8%	27.1 min	2.2%
SLC–SAN	Salt Lake City to San Diego	293	90.1%	-5.6 min	1.0%
SLC–ATL	Salt Lake City to Atlanta	255	82.4%	1.7 min	1.6%
SLC–IAH	Salt Lake City to Houston	211	79.6%	3.1 min	3.3%
SLC–JFK	Salt Lake City to New York	197	79.7%	-5.9 min	1.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	46.4%	33.5%	46,485
Late-arriving aircraft	30.1%	39.3%	30,180
National Aviation System	19.3%	21.0%	19,356
Extreme weather	4.0%	5.9%	4,053
Security	0.1%	0.2%	103

100,177 delay minutes on 1,492 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 SLC on time in March 2026?

83.8% of 10,632 scheduled domestic departures left less than 15 minutes late, and 84.5% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 84.7% of 10,276 departures left on time and 0.2% were cancelled, against 83.8% and 1.2% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SLC · methodology · corrections.