Airports › Las Vegas (LAS) › December 2025
Airport month · December 2025
Harry Reid International in December 2025
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 December 2025, reporting carriers scheduled 14,547 domestic departures from Harry Reid International (LAS). 74.6% left less than 15 minutes late and 79.3% reached their destination on time; 0.6% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so LAS departures were 2.6 points above the national departure figure.
A year earlier, in December 2024, the airport had 15,581 departures with 79.9% leaving on time: a change of −5.3 points, with flights down 7%.
Flights arriving at LAS that month were on time 77.9% of the time (14,537 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 48%, air carrier 34% and national aviation system 15%.
- On time 79.3%
- Arrived 15+ minutes late 19.9%
- Cancelled 0.6%
- Diverted 0.2%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | LAS, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 74.6% | 79.9% | 73.8% | 72.0% |
| Arrived on time | 79.3% | 82.5% | 76.8% | 71.9% |
| Cancelled | 0.6% | 0.4% | 0.9% | 1.5% |
| Average departure delay (late minutes only) | 15.3 min | 13.0 min | 16.3 min | 21.2 min |
| Scheduled departures a day | 485 | 519 | 474 | 19,410 |
| Scheduled departures | 14,547 | 15,581 | 172,932 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 7,299 | 50% | 76.6% | 5.7 min | 0.4% |
| DL Delta Air Lines | 1,306 | 9% | 84.8% | -1.4 min | 1.3% |
| UA United Airlines | 1,285 | 9% | 84.0% | -1.7 min | 0.1% |
| AA American Airlines | 1,167 | 8% | 83.8% | 3.7 min | 0.3% |
| F9 Frontier Airlines | 957 | 7% | 75.5% | 7.2 min | 1.9% |
| G4 Allegiant Air | 717 | 5% | 85.6% | -0.8 min | 0.1% |
| NK Spirit Airlines | 506 | 3% | 84.6% | 1.1 min | 1.6% |
| AS Alaska Airlines | 495 | 3% | 73.1% | 7.3 min | 0.8% |
| OO SkyWest Airlines | 369 | 3% | 79.4% | 6.3 min | 0.3% |
| B6 JetBlue Airways | 304 | 2% | 83.2% | -4.1 min | 1.3% |
| HA Hawaiian Airlines | 142 | 1% | 69.0% | 25.1 min | 0.7% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| LAS–LAX | Las Vegas to Los Angeles | 683 | 80.8% | 3.6 min | 0.3% |
| LAS–DEN | Las Vegas to Denver | 556 | 79.5% | 3.1 min | 0.5% |
| LAS–SFO | Las Vegas to San Francisco | 510 | 66.9% | 14.5 min | 0.4% |
| LAS–PHX | Las Vegas to Phoenix | 497 | 81.1% | 3.6 min | 0.4% |
| LAS–SAN | Las Vegas to San Diego | 477 | 62.1% | 16.9 min | 1.0% |
| LAS–SEA | Las Vegas to Seattle | 468 | 76.9% | 6.2 min | 0.6% |
| LAS–DFW | Las Vegas to Dallas/Fort Worth | 446 | 85.2% | 1.6 min | 1.6% |
| LAS–ATL | Las Vegas to Atlanta | 429 | 87.4% | -1.7 min | 1.2% |
| LAS–BUR | Las Vegas to Burbank | 366 | 74.9% | 8.2 min | 1.9% |
| LAS–SNA | Las Vegas to Santa Ana | 363 | 81.3% | 0.6 min | 0.3% |
| LAS–ORD | Las Vegas to Chicago | 359 | 75.2% | 9.8 min | 0.8% |
| LAS–SMF | Las Vegas to Sacramento | 354 | 82.2% | 0.3 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left LAS on time in December 2025?
74.6% of 14,547 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 72.0% and 71.9%.
How does that compare with a year earlier?
In December 2024, 79.9% of 15,581 departures left on time and 0.4% were cancelled, against 74.6% and 0.6% in December 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for LAS · methodology · corrections.