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Airport · 12 months to July 2026
Salt Lake City International: delays and on-time record
Salt Lake City, Utah
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. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 117,896 domestic departures from Salt Lake City International (SLC), Salt Lake City, in the 12 months to July 2026: about 323 a day to 95 destinations.
84.0% of those flights left the gate less than 15 minutes late, 7.9 points above the national departure figure of 76.1%. Flights arriving at SLC were on time 84.2% of the time, 8.2 points above the national arrival figure of 76.0%.
0.8% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 11.0 min.
Delta Air Lines is the largest reporting carrier at SLC with 46% of departures. Among carriers with at least 1,179 departures, SkyWest Airlines had the highest on-time arrival share for its SLC departures (89.8%) and Alaska Airlines the lowest (74.9%).
On-time departures are about level with the previous 12 months (84.2%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving SLC, air carrier 47%, late-arriving aircraft 27% and national aviation system 21%.
- On time 83.8%
- Arrived 15+ minutes late 15.1%
- Cancelled 0.8%
- Diverted 0.3%
As origin and as destination, against the nation
| Measure | Departures from SLC | Arrivals at SLC | All reported flights | SLC departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 84.0% | 83.7% | 76.1% | 84.2% |
| Arrived on time | 83.8% | 84.2% | 76.0% | 83.3% |
| Cancelled | 0.8% | 0.8% | 1.8% | 0.4% |
| Diverted | 0.3% | 0.1% | 0.3% | 0.3% |
| Average departure delay (late minutes only) | 11.0 min | 11.9 min | 17.4 min | 11.4 min |
| Arrival delay minutes per 100 flights | 1,062 | 1,131 | 1,684 | 1,130 |
| Scheduled flights | 117,896 | 117,767 | 7,043,858 | 115,022 |
12 months to July 2026. The first column follows flights that left SLC; the second follows flights that landed there. Year on year, on-time departures moved −0.2 pts.
Airlines at SLC
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DL Delta Air Lines | 54,665 | 46% | 82.9% | 1.4 min | 0.8% |
| OO SkyWest Airlines | 36,266 | 31% | 89.8% | -3.8 min | 0.4% |
| WN Southwest Airlines | 11,224 | 10% | 77.8% | 3.7 min | 0.5% |
| UA United Airlines | 4,870 | 4% | 79.3% | 5.2 min | 1.1% |
| AA American Airlines | 4,649 | 4% | 76.9% | 9.3 min | 2.4% |
| F9 Frontier Airlines | 3,559 | 3% | 79.2% | 4.7 min | 1.5% |
| AS Alaska Airlines | 1,701 | 1% | 74.9% | 5.3 min | 1.5% |
| B6 JetBlue Airways | 576 | 0% | 71.2% | 11.3 min | 4.5% |
| HA Hawaiian Airlines | 153 | 0% | 79.1% | 22.2 min | 0.0% |
| NK Spirit Airlines | 124 | 0% | 78.2% | 3.3 min | 3.2% |
| MQ Envoy Air | 109 | 0% | 76.1% | 6.1 min | 0.0% |
Departures from SLC by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 83.8%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from SLC
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SLC–DEN | Salt Lake City to Denver | 7,728 | 78.5% | 4.2 min | 0.5% |
| SLC–PHX | Salt Lake City to Phoenix | 5,775 | 83.3% | 2.3 min | 0.5% |
| SLC–LAX | Salt Lake City to Los Angeles | 4,191 | 86.1% | -3.0 min | 0.5% |
| SLC–SEA | Salt Lake City to Seattle | 4,125 | 79.3% | 2.7 min | 0.9% |
| SLC–DFW | Salt Lake City to Dallas/Fort Worth | 3,866 | 76.2% | 9.6 min | 2.4% |
| SLC–LAS | Salt Lake City to Las Vegas | 3,744 | 77.6% | 6.3 min | 0.7% |
| SLC–SFO | Salt Lake City to San Francisco | 3,454 | 65.1% | 15.0 min | 1.0% |
| SLC–ORD | Salt Lake City to Chicago | 3,205 | 74.2% | 12.8 min | 1.5% |
| SLC–SAN | Salt Lake City to San Diego | 3,008 | 81.4% | 2.3 min | 0.8% |
| SLC–ATL | Salt Lake City to Atlanta | 2,972 | 85.8% | -1.6 min | 0.6% |
| SLC–PDX | Salt Lake City to Portland | 2,375 | 87.6% | -3.1 min | 1.1% |
| SLC–SMF | Salt Lake City to Sacramento | 2,160 | 84.8% | 0.2 min | 0.9% |
| SLC–IAH | Salt Lake City to Houston | 1,949 | 84.6% | 1.7 min | 0.8% |
| SLC–JFK | Salt Lake City to New York | 1,931 | 79.9% | -2.3 min | 2.3% |
| SLC–SNA | Salt Lake City to Santa Ana | 1,855 | 82.9% | 2.1 min | 0.7% |
| SLC–SJC | Salt Lake City to San Jose | 1,803 | 86.7% | -1.1 min | 0.4% |
| SLC–AUS | Salt Lake City to Austin | 1,784 | 81.8% | 1.6 min | 0.7% |
| SLC–BOI | Salt Lake City to Boise | 1,741 | 86.0% | -1.1 min | 0.8% |
| SLC–SGU | Salt Lake City to St. George | 1,717 | 91.6% | -5.2 min | 0.2% |
| SLC–GEG | Salt Lake City to Spokane | 1,671 | 85.5% | 1.6 min | 0.5% |
| SLC–OAK | Salt Lake City to Oakland | 1,643 | 90.0% | -3.3 min | 0.2% |
| SLC–MSP | Salt Lake City to Minneapolis | 1,589 | 86.6% | -1.7 min | 0.3% |
| SLC–LGB | Salt Lake City to Long Beach | 1,567 | 86.9% | -2.7 min | 0.4% |
| SLC–DTW | Salt Lake City to Detroit | 1,552 | 88.5% | -3.8 min | 0.1% |
| SLC–MCO | Salt Lake City to Orlando | 1,506 | 81.6% | 1.8 min | 0.7% |
| SLC–BUR | Salt Lake City to Burbank | 1,473 | 86.5% | 0.4 min | 0.4% |
| SLC–FAT | Salt Lake City to Fresno | 1,366 | 93.1% | -5.8 min | 0.5% |
| SLC–EWR | Salt Lake City to Newark | 1,337 | 77.7% | 5.2 min | 2.4% |
| SLC–BOS | Salt Lake City to Boston | 1,256 | 80.3% | 1.2 min | 2.0% |
| SLC–ONT | Salt Lake City to Ontario | 1,239 | 88.4% | -2.2 min | 1.0% |
| SLC–JAC | Salt Lake City to Jackson | 1,219 | 86.2% | 0.2 min | 0.8% |
| SLC–BNA | Salt Lake City to Nashville | 1,206 | 85.1% | -0.5 min | 0.6% |
| SLC–RNO | Salt Lake City to Reno | 1,198 | 87.7% | -1.2 min | 0.2% |
| SLC–IDA | Salt Lake City to Idaho Falls | 1,193 | 88.5% | -0.4 min | 0.4% |
| SLC–PSC | Salt Lake City to Pasco/Kennewick/Richland | 1,178 | 89.0% | -1.5 min | 0.2% |
| SLC–BZN | Salt Lake City to Bozeman | 1,162 | 87.2% | -1.8 min | 0.5% |
| SLC–ABQ | Salt Lake City to Albuquerque | 1,154 | 91.7% | -5.4 min | 0.0% |
| SLC–TUS | Salt Lake City to Tucson | 1,112 | 91.5% | -5.2 min | 0.2% |
| SLC–FCA | Salt Lake City to Kalispell | 1,111 | 89.1% | -1.2 min | 0.7% |
| SLC–PSP | Salt Lake City to Palm Springs | 1,078 | 91.7% | -5.7 min | 0.4% |
| SLC–SUN | Salt Lake City to Sun Valley/Hailey/Ketchum | 1,078 | 91.8% | -8.3 min | 0.7% |
| SLC–BIL | Salt Lake City to Billings | 1,074 | 87.3% | -1.8 min | 0.5% |
| SLC–GTF | Salt Lake City to Great Falls | 1,071 | 92.5% | -7.4 min | 0.7% |
| SLC–SBA | Salt Lake City to Santa Barbara | 1,060 | 91.5% | -7.1 min | 0.8% |
| SLC–MSO | Salt Lake City to Missoula | 1,059 | 87.8% | -0.3 min | 0.9% |
| SLC–MCI | Salt Lake City to Kansas City | 1,009 | 84.4% | -1.5 min | 1.0% |
| SLC–SAT | Salt Lake City to San Antonio | 1,008 | 83.8% | 1.9 min | 0.8% |
| SLC–STL | Salt Lake City to St. Louis | 990 | 83.7% | 0.0 min | 0.6% |
| SLC–CLT | Salt Lake City to Charlotte | 922 | 83.3% | -1.1 min | 1.1% |
| SLC–HNL | Salt Lake City to Honolulu | 858 | 74.2% | 10.9 min | 1.9% |
| SLC–TWF | Salt Lake City to Twin Falls | 831 | 92.4% | -4.8 min | 0.5% |
| SLC–CVG | Salt Lake City to Cincinnati | 821 | 88.1% | -3.5 min | 0.4% |
| SLC–PHL | Salt Lake City to Philadelphia | 818 | 82.5% | 0.6 min | 2.1% |
| SLC–MIA | Salt Lake City to Miami | 796 | 84.2% | 1.2 min | 0.6% |
| SLC–BWI | Salt Lake City to Baltimore | 769 | 80.1% | 0.8 min | 1.3% |
| SLC–EUG | Salt Lake City to Eugene | 769 | 93.2% | -3.8 min | 0.0% |
| SLC–OMA | Salt Lake City to Omaha | 755 | 89.4% | -3.4 min | 0.1% |
| SLC–MFR | Salt Lake City to Medford | 729 | 90.0% | -2.3 min | 0.1% |
| SLC–RDM | Salt Lake City to Bend/Redmond | 729 | 92.5% | -3.7 min | 0.4% |
| SLC–HLN | Salt Lake City to Helena | 725 | 95.4% | -11.6 min | 0.3% |
| SLC–COS | Salt Lake City to Colorado Springs | 721 | 91.5% | -5.2 min | 0.1% |
| SLC–OKC | Salt Lake City to Oklahoma City | 720 | 88.8% | -2.9 min | 0.6% |
| SLC–IAD | Salt Lake City to Washington | 712 | 85.3% | -0.7 min | 1.5% |
| SLC–DAL | Salt Lake City to Dallas | 674 | 76.9% | 6.2 min | 1.2% |
| SLC–CDC | Salt Lake City to Cedar City | 629 | 93.8% | -9.9 min | 0.5% |
| SLC–MDW | Salt Lake City to Chicago | 619 | 82.4% | -3.1 min | 0.6% |
| SLC–GJT | Salt Lake City to Grand Junction | 583 | 94.5% | -12.0 min | 0.0% |
| SLC–EKO | Salt Lake City to Elko | 578 | 92.2% | -3.2 min | 0.7% |
| SLC–MSY | Salt Lake City to New Orleans | 455 | 86.8% | -3.8 min | 0.4% |
| SLC–PIH | Salt Lake City to Pocatello | 448 | 92.4% | -4.4 min | 0.2% |
| SLC–HOU | Salt Lake City to Houston | 408 | 82.8% | -1.1 min | 0.2% |
| SLC–TUL | Salt Lake City to Tulsa | 403 | 86.6% | -2.0 min | 0.7% |
| SLC–RDU | Salt Lake City to Raleigh/Durham | 383 | 86.7% | -3.5 min | 1.3% |
| SLC–FLL | Salt Lake City to Fort Lauderdale | 375 | 78.4% | 5.0 min | 0.5% |
| SLC–TPA | Salt Lake City to Tampa | 368 | 85.3% | -2.0 min | 0.3% |
| SLC–LWS | Salt Lake City to Lewiston | 365 | 92.9% | -8.0 min | 0.0% |
| SLC–MEM | Salt Lake City to Memphis | 365 | 83.3% | 1.8 min | 0.8% |
| SLC–DCA | Salt Lake City to Washington | 364 | 82.7% | -3.1 min | 0.8% |
| SLC–IND | Salt Lake City to Indianapolis | 364 | 82.4% | 3.2 min | 1.1% |
| SLC–MKE | Salt Lake City to Milwaukee | 363 | 78.8% | 9.6 min | 0.8% |
| SLC–PIT | Salt Lake City to Pittsburgh | 363 | 84.0% | -0.6 min | 1.1% |
| SLC–CLE | Salt Lake City to Cleveland | 363 | 81.0% | 9.4 min | 0.3% |
| SLC–CMH | Salt Lake City to Columbus | 363 | 78.8% | 9.8 min | 0.6% |
| SLC–XNA | Salt Lake City to Fayetteville | 362 | 84.0% | 1.6 min | 0.6% |
| SLC–BTM | Salt Lake City to Butte | 361 | 94.5% | -11.0 min | 0.6% |
| SLC–OGG | Salt Lake City to Kahului | 303 | 79.9% | 1.5 min | 3.6% |
| SLC–LIT | Salt Lake City to Little Rock | 271 | 90.0% | -9.1 min | 0.7% |
| SLC–WYS | Salt Lake City to West Yellowstone | 148 | 89.9% | -7.8 min | 0.7% |
| SLC–ANC | Salt Lake City to Anchorage | 128 | 72.7% | 5.5 min | 0.0% |
The 89 busiest of 95 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 2,358 departures, 6 am to 7 am had the highest on-time share (93.8% of 2,611 flights) and 6 pm to 7 pm the lowest (73.2% of 2,380).
Delay causes
Cancellations by reported reason (914 in the period): air carrier 44%, weather 42%, national aviation system 14%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for SLC on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave SLC on time?
84.0% of the 117,896 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 0.8% were cancelled.
How often do flights arrive at SLC on time?
84.2% of 117,767 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at SLC?
Counting departures from SLC and whether they reached their destination on time, SkyWest Airlines had the highest share (89.8% of 36,266 flights), then Delta Air Lines (82.9%) and United Airlines (79.3%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at SLC?
For departures from SLC that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: air carrier 47%, late-arriving aircraft 27%, national aviation system 21%, extreme weather 6%, security 0%.
What time of day has the highest on-time share at SLC?
Departures scheduled from 6 am to 7 am local time left on time 93.8% of the time, the highest of any hour with enough flights to compare; 6 pm to 7 pm was lowest at 73.2%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 84.0%, about level with the previous 12 months (84.2%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at SLC?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.