Airport reliability

Salt Lake City (SLC) on-time performance

How reliably flights leave Salt Lake City, UT (SLC) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

Salt Lake City, UT117,966 departures in 12 months

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Departures on time: 83.3%
Cancelled: 0.8%
60+ minutes late: 4.8%
Scheduled departures: 117,966

What this means

SLC departures beat the U.S. average.

83.3% of the 117,966 scheduled departures from Salt Lake City (SLC) arrived at their destination on time, 7.7 points higher than the U.S. average of 75.6%.
0.8% of departures were cancelled (U.S. average 1.9%), and 4.8% arrived an hour or more late.
Flights arriving at SLC were on time 83.8% of the time.
Among airlines with at least 300 departures, SkyWest Airlines was the most punctual from SLC (89.3%) and JetBlue Airways the least (67.8%).
Over the last 3 years, October was the most reliable month for departures from SLC (87.8% on time) and July the least reliable (77.0%).
Flights scheduled to depart 6 am to 7 am were the most punctual (93.4% on time); flights scheduled to depart 7 pm to 8 pm were the least (71.8%).

Airlines at SLC

Ranked by on-time arrival

Departures from SLC, September 2025 to August 2026. On time means arrived at the destination within 15 minutes of schedule.
Airline	On time	Cancelled	60+ min late	Avg delay when late	Departures
SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska	89.3%	0.4%	3.3%	68 min	36,308
Delta Air Lines	82.3%	0.8%	4.9%	60 min	54,749
Frontier Airlines	79.1%	1.4%	7.5%	86 min	3,572
United Airlines	79.0%	1.1%	7.6%	79 min	4,850
Hawaiian Airlines	78.7%	0.0%	9.8%	176 min	122
American Airlines	77.3%	2.2%	8.6%	108 min	4,660
Southwest Airlines	77.0%	0.5%	5.1%	49 min	11,193
Spirit Airlines	76.4%	2.8%	8.3%	67 min	72
Alaska Airlines	75.0%	1.3%	4.6%	50 min	1,733
Envoy AirSold as American Eagle	74.8%	0.0%	6.5%	58 min	123
JetBlue Airways	67.8%	5.3%	11.1%	83 min	584

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On-time rate by departure hour

<6a 91.1%

6a 93.4%

7a 88.1%

8a 88.1%

9a 86.2%

10a 86.5%

11a 82.5%

12p 81.8%

1p 82.7%

2p 75.1%

3p 83.5%

4p 75.3%

5p 79.9%

6p 73.3%

7p 71.8%

8p 81.3%

9p 84.7%

10p 84.5%

11p 83.1%

Share of scheduled flights on time SLC average 83.3%

Departures from SLC by scheduled local departure hour, September 2025 to August 2026. Scale starts at zero.

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Period	On time	Flights
Departing before 6 am	91.1%	1,753
Departing 6 am to 7 am	93.4%	2,729
Departing 7 am to 8 am	88.1%	8,321
Departing 8 am to 9 am	88.1%	5,426
Departing 9 am to 10 am	86.2%	9,369
Departing 10 am to 11 am	86.5%	9,345
Departing 11 am to noon	82.5%	11,349
Departing noon to 1 pm	81.8%	2,890
Departing 1 pm to 2 pm	82.7%	8,695
Departing 2 pm to 3 pm	75.1%	3,507
Departing 3 pm to 4 pm	83.5%	11,341
Departing 4 pm to 5 pm	75.3%	4,299
Departing 5 pm to 6 pm	79.9%	12,088
Departing 6 pm to 7 pm	73.3%	2,429
Departing 7 pm to 8 pm	71.8%	971
Departing 8 pm to 9 pm	81.3%	8,359
Departing 9 pm to 10 pm	84.7%	5,148
Departing 10 pm to 11 pm	84.5%	5,271
Departing 11 pm to midnight	83.1%	4,676

Best and worst months at SLC

Jan 81.5%

Feb 83.8%

Mar 83.4%

Apr 84.2%

May 83.3%

Jun 80.9%

Jul 77.0%

Aug 80.1%

Sep 86.9%

Oct 87.8%

Nov 87.2%

Dec 84.0%

Share of scheduled flights on time 12-month average 83.3%

Departures from SLC by calendar month, September 2023 to August 2026 pooled. Scale starts at zero.

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Period	On time	Flights
January	81.5%	28,324
February	83.8%	26,676
March	83.4%	30,629
April	84.2%	28,728
May	83.3%	29,690
June	80.9%	29,689
July	77.0%	30,660
August	80.1%	29,839
September	86.9%	27,791
October	87.8%	28,701
November	87.2%	26,822
December	84.0%	28,537

Month by month, last 12 months

Sep 87.8%

Oct 85.5%

Nov 84.9%

Dec 82.8%

Jan 83.7%

Feb 84.5%

Mar 84.5%

Apr 83.8%

May 84.6%

Jun 82.7%

Jul 78.3%

Aug 77.6%

Share of scheduled flights on time U.S. average 75.6%

Departures from SLC, September 2025 to August 2026. Scale starts at zero.

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Period	On time	Flights
Sep 2025	87.8%	9,344
Oct 2025	85.5%	9,841
Nov 2025	84.9%	9,197
Dec 2025	82.8%	9,740
Jan 2026	83.7%	9,515
Feb 2026	84.5%	9,167
Mar 2026	84.5%	10,632
Apr 2026	83.8%	9,877
May 2026	84.6%	10,146
Jun 2026	82.7%	10,084
Jul 2026	78.3%	10,368
Aug 2026	77.6%	10,055

Busiest routes from SLC

Nonstop routes from SLC by scheduled flights, September 2025 to August 2026.
To	On time	Cancelled	Airlines	Flights
Denver (DEN)	78.3%	0.5%	5	7,709
Phoenix (PHX)	82.9%	0.5%	6	5,778
Los Angeles (LAX)	85.2%	0.5%	6	4,196
Seattle (SEA)	79.2%	0.8%	4	4,098
Dallas/Fort Worth (DFW)	77.4%	2.2%	4	3,870
Las Vegas (LAS)	76.9%	0.7%	4	3,724
San Francisco (SFO)	62.7%	1.0%	4	3,433
Chicago (ORD)	73.2%	1.5%	5	3,246
San Diego (SAN)	79.9%	0.9%	5	3,097
Atlanta (ATL)	85.6%	0.6%	2	2,974
Portland (PDX)	86.9%	1.1%	4	2,384
Sacramento (SMF)	84.0%	0.9%	3	2,165
New York (JFK)	78.3%	2.6%	2	1,932
Houston (IAH)	85.2%	0.7%	3	1,931
Santa Ana (SNA)	82.3%	0.7%	3	1,858
Austin (AUS)	80.7%	0.7%	3	1,796
San Jose (SJC)	86.4%	0.4%	3	1,796
Boise (BOI)	85.6%	0.8%	2	1,732
St. George (SGU)	91.1%	0.2%	1	1,727
Spokane (GEG)	85.1%	0.4%	2	1,668

Airliner parked at a terminal gate — Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source: U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period: September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through: August 2026
Processed: 2026-11-03
Scope: Scheduled nonstop domestic departures from Salt Lake City, UT (SLC) by airlines that report to the DOT.
Method: Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

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