Salt Lake City International in January 2026

83.4%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 January 2026, reporting carriers scheduled 9,515 domestic departures from Salt Lake City International (SLC). 83.4% left less than 15 minutes late and 83.7% reached their destination on time; 1.8% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so SLC departures were 7.8 points above the national departure figure.

A year earlier, in January 2025, the airport had 9,350 departures with 84.3% leaving on time: a change of −0.9 points, with flights up 2%.

Flights arriving at SLC that month were on time 82.7% of the time (9,511 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 49%, late-arriving aircraft 20% and national aviation system 19%.

On time 83.7%
Arrived 15+ minutes late 14.2%
Cancelled 1.8%
Diverted 0.3%

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

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

Measure	Jan 2026	Jan 2025	SLC, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	83.4%	84.3%	84.0%	75.6%
Arrived on time	83.7%	84.7%	83.8%	75.3%
Cancelled	1.8%	0.8%	0.8%	4.7%
Average departure delay (late minutes only)	11.2 min	11.0 min	11.0 min	16.7 min
Scheduled departures a day	317	312	323	18,133
Scheduled departures	9,515	9,350	117,896	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	4,452	47%	82.7%	0.0 min	1.8%
OO SkyWest Airlines	2,721	29%	88.2%	-3.0 min	1.1%
WN Southwest Airlines	938	10%	85.0%	-4.5 min	1.2%
UA United Airlines	519	5%	81.1%	-0.3 min	1.7%
AA American Airlines	340	4%	74.1%	2.5 min	9.1%
F9 Frontier Airlines	309	3%	79.9%	4.2 min	1.9%
AS Alaska Airlines	171	2%	72.5%	9.3 min	1.2%
B6 JetBlue Airways	36	0%	69.4%	12.4 min	5.6%
MQ Envoy Air	29	0%	58.6%	30.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SLC–DEN	Salt Lake City to Denver	634	79.3%	0.6 min	0.3%
SLC–PHX	Salt Lake City to Phoenix	490	86.1%	0.4 min	0.6%
SLC–LAX	Salt Lake City to Los Angeles	391	84.7%	-5.5 min	0.5%
SLC–DFW	Salt Lake City to Dallas/Fort Worth	326	71.5%	5.7 min	9.8%
SLC–LAS	Salt Lake City to Las Vegas	319	82.1%	2.6 min	0.3%
SLC–SEA	Salt Lake City to Seattle	299	83.6%	-5.4 min	0.3%
SLC–SFO	Salt Lake City to San Francisco	269	77.0%	2.2 min	1.9%
SLC–ATL	Salt Lake City to Atlanta	259	83.4%	-2.8 min	2.3%
SLC–SAN	Salt Lake City to San Diego	251	83.3%	1.5 min	0.8%
SLC–ORD	Salt Lake City to Chicago	237	70.9%	16.4 min	1.3%
SLC–IAH	Salt Lake City to Houston	193	89.6%	-3.9 min	0.5%
SLC–PDX	Salt Lake City to Portland	177	85.3%	-3.1 min	1.7%

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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	48.7%	37.3%	43,677
Late-arriving aircraft	20.1%	35.0%	18,002
National Aviation System	18.6%	18.0%	16,634
Extreme weather	12.5%	9.6%	11,208
Security	0.1%	0.1%	78

89,599 delay minutes on 1,355 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 January 2026?

83.4% of 9,515 scheduled domestic departures left less than 15 minutes late, and 83.7% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 84.3% of 9,350 departures left on time and 0.8% were cancelled, against 83.4% and 1.8% in January 2026.

Provenance

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