Airports › Salt Lake City (SLC) › May 2026
Airport month · May 2026
Salt Lake City International in May 2026
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 May 2026, reporting carriers scheduled 10,146 domestic departures from Salt Lake City International (SLC). 84.9% left less than 15 minutes late and 84.6% reached their destination on time; 0.4% were cancelled.
Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so SLC departures were 7.8 points above the national departure figure.
A year earlier, in May 2025, the airport had 9,923 departures with 84.8% leaving on time: a change of +0.1 points, with flights up 2%.
Flights arriving at SLC that month were on time 85.4% of the time (10,146 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, national aviation system 26% and late-arriving aircraft 25%.
- On time 84.6%
- Arrived 15+ minutes late 14.6%
- Cancelled 0.4%
- Diverted 0.4%
May 2026 against a year earlier, the airport's year and the nation
| Measure | May 2026 | May 2025 | SLC, 12 months to Jul 2026 | All reported flights, May 2026 |
|---|---|---|---|---|
| Departed on time | 84.9% | 84.8% | 84.0% | 77.1% |
| Arrived on time | 84.6% | 83.8% | 83.8% | 77.6% |
| Cancelled | 0.4% | 0.2% | 0.8% | 0.9% |
| Average departure delay (late minutes only) | 9.5 min | 10.8 min | 11.0 min | 16.0 min |
| Scheduled departures a day | 338 | 331 | 323 | 20,391 |
| Scheduled departures | 10,146 | 9,923 | 117,896 | 611,735 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DL Delta Air Lines | 4,776 | 47% | 84.8% | -0.5 min | 0.6% |
| OO SkyWest Airlines | 3,286 | 32% | 89.3% | -2.4 min | 0.0% |
| WN Southwest Airlines | 903 | 9% | 75.3% | 5.0 min | 0.0% |
| AA American Airlines | 389 | 4% | 77.4% | 4.0 min | 2.3% |
| UA United Airlines | 364 | 4% | 79.7% | 2.8 min | 1.1% |
| F9 Frontier Airlines | 280 | 3% | 72.9% | 7.2 min | 0.4% |
| AS Alaska Airlines | 113 | 1% | 84.1% | -3.4 min | 0.0% |
| B6 JetBlue Airways | 31 | 0% | 83.9% | 25.4 min | 0.0% |
| MQ Envoy Air | 4 | 0% | 50.0% | 25.3 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SLC–DEN | Salt Lake City to Denver | 663 | 78.3% | 2.1 min | 0.3% |
| SLC–PHX | Salt Lake City to Phoenix | 501 | 85.2% | 1.6 min | 0.2% |
| SLC–SEA | Salt Lake City to Seattle | 338 | 82.5% | -0.4 min | 0.3% |
| SLC–LAX | Salt Lake City to Los Angeles | 330 | 87.9% | -3.7 min | 0.0% |
| SLC–DFW | Salt Lake City to Dallas/Fort Worth | 329 | 72.9% | 9.5 min | 3.0% |
| SLC–LAS | Salt Lake City to Las Vegas | 315 | 78.4% | 6.8 min | 0.3% |
| SLC–SFO | Salt Lake City to San Francisco | 307 | 45.6% | 28.4 min | 1.0% |
| SLC–ORD | Salt Lake City to Chicago | 283 | 76.3% | 13.2 min | 0.4% |
| SLC–ATL | Salt Lake City to Atlanta | 249 | 85.9% | -3.5 min | 0.0% |
| SLC–SAN | Salt Lake City to San Diego | 240 | 84.6% | 1.0 min | 0.8% |
| SLC–SMF | Salt Lake City to Sacramento | 200 | 90.5% | -6.2 min | 0.5% |
| SLC–PDX | Salt Lake City to Portland | 192 | 91.7% | -4.1 min | 1.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SLC on time in May 2026?
84.9% of 10,146 scheduled domestic departures left less than 15 minutes late, and 84.6% reached their destination on time. The national figures that month were 77.1% and 77.6%.
How does that compare with a year earlier?
In May 2025, 84.8% of 9,923 departures left on time and 0.2% were cancelled, against 84.9% and 0.4% in May 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 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.