Salt Lake City International in October 2023

89.2%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 October 2023, reporting carriers scheduled 9,414 domestic departures from Salt Lake City International (SLC). 89.2% left less than 15 minutes late and 89.3% reached their destination on time; 0.1% were cancelled.

Nationally that month, 83.8% of flights departed on time and 84.0% arrived on time, so SLC departures were 5.4 points above the national departure figure.

Flights arriving at SLC that month were on time 88.9% of the time (9,417 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 51%, late-arriving aircraft 32% and national aviation system 13%.

On time 89.3%
Arrived 15+ minutes late 10.5%
Cancelled 0.1%
Diverted 0.1%

Every scheduled departure from SLC in October 2023, judged by arrival at the destination.

October 2023 against a year earlier, the airport's year and the nation

Measure	Oct 2023	Year earlier	SLC, 12 months to Jul 2026	All reported flights, Oct 2023
Departed on time	89.2%	—	84.0%	83.8%
Arrived on time	89.3%	—	83.8%	84.0%
Cancelled	0.1%	—	0.8%	0.4%
Average departure delay (late minutes only)	7.0 min	—	11.0 min	11.0 min
Scheduled departures a day	314	—	323	19,966
Scheduled departures	9,414	—	117,896	598,968

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	4,496	48%	91.0%	-6.3 min	0.0%
OO SkyWest Airlines	2,706	29%	93.1%	-6.2 min	0.0%
WN Southwest Airlines	1,045	11%	81.1%	3.6 min	0.1%
UA United Airlines	297	3%	84.2%	-1.8 min	0.7%
AA American Airlines	275	3%	85.8%	-1.6 min	2.2%
F9 Frontier Airlines	184	2%	72.3%	17.3 min	0.0%
B6 JetBlue Airways	178	2%	77.0%	7.4 min	0.0%
NK Spirit Airlines	123	1%	80.5%	3.3 min	0.0%
AS Alaska Airlines	110	1%	81.8%	1.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SLC–DEN	Salt Lake City to Denver	673	83.1%	2.3 min	0.1%
SLC–PHX	Salt Lake City to Phoenix	448	83.0%	-0.1 min	0.2%
SLC–LAS	Salt Lake City to Las Vegas	422	77.5%	12.6 min	0.0%
SLC–LAX	Salt Lake City to Los Angeles	367	88.3%	-0.6 min	0.0%
SLC–SFO	Salt Lake City to San Francisco	333	84.7%	1.0 min	0.0%
SLC–DFW	Salt Lake City to Dallas/Fort Worth	325	86.2%	-1.1 min	1.5%
SLC–SEA	Salt Lake City to Seattle	290	86.6%	-4.1 min	0.0%
SLC–ATL	Salt Lake City to Atlanta	250	96.0%	-12.6 min	0.0%
SLC–ORD	Salt Lake City to Chicago	237	91.1%	-6.1 min	0.0%
SLC–SAN	Salt Lake City to San Diego	183	85.8%	-1.6 min	0.0%
SLC–PDX	Salt Lake City to Portland	179	90.5%	-3.9 min	0.0%
SLC–SMF	Salt Lake City to Sacramento	179	87.7%	-4.0 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), October 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2023	Minutes
Air carrier	51.1%	41.3%	28,239
Late-arriving aircraft	32.0%	40.5%	17,701
National Aviation System	13.0%	14.4%	7,180
Extreme weather	3.8%	3.7%	2,110
Security	0.0%	0.2%	0

55,230 delay minutes on 988 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 October 2023?

89.2% of 9,414 scheduled domestic departures left less than 15 minutes late, and 89.3% reached their destination on time. The national figures that month were 83.8% and 84.0%.

How does that compare with a year earlier?

October 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2023; 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.