Route profile
SLC→LAS
Flight reliability, delays and best times to fly from Salt Lake City to Las Vegas, 368 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 53% of comparable major US routes (4,598 compared)
Calculated from 12,718 flights. How this is calculated
SLC → LAS arrives on time 76.7% of the time; the return trip, LAS → SLC, arrives on time 81.9% of the time, a 5.1-point gap between the two directions of the same city pair.
SLC → LAS spends 27.2 minutes on the ground on a 368-mile trip: 19.4 minutes from pushback to wheels-up at SLC and 7.8 minutes from touchdown to gate at LAS.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
Which day you fly matters unusually much here, a wider weekday spread than 94% of 4,467 comparable routes.
84.4% on time on a typical Tuesday, against 69.4% on a Friday.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,467 in the comparison.
Why SLC → LAS flights are cancelled
July 2023 – July 2026
SLC → LAS cancelled 82 of 12,718 scheduled flights — about 1 in every 155. The reason filed most often was the airline, 67.1% of the cancellations coded on this route — about 1 in every 231 scheduled flights.
Share of cancellations
Of 82 cancelled departures carrying a reason code.
What each reason means
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
55 cancellations, 67.1% of the total.
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
23 cancellations, 28.0% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
4 cancellations, 4.9% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
82 coded cancellations were recorded on SLC → LAS; the section appears from 50.
When it goes wrong
July 2023 – July 2026
45 min late
against a median of 4 min early
Percentiles over 12,718 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at LAS after arriving from SLC.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 40% | Likely to miss |
| 45 min | 23% | High risk |
| 60 min | 14% | Some risk |
| 90 min | 7.2% | Some risk |
| 120 min | 4.3% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.64% of the time and diverts 0.08% of the time, which a late arrival never shows up in.
Chance of missing is the share of 12,626 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 45 minutes late (90th-percentile gate arrival delay), over 12,718 operations.
Any other layover length: connection checker.
Best time to fly
SLC → LAS flights departing 5–9 AM arrived on time 92.2% of the time, against 69.4% for 6–9 PM departures, a gap of 22.8 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 97.2% on time from 764 flights
- 7 AM: 93.8% on time from 486 flights
- 8 AM: 87.5% on time from 1,038 flights
- 9 AM: 88.6% on time from 417 flights
- 10 AM: 80.9% on time from 288 flights
- 11 AM: 77.9% on time from 1,723 flights
- 12 PM: 79.7% on time from 332 flights
- 1 PM: 66.0% on time from 480 flights
- 2 PM: 68.4% on time from 421 flights
- 3 PM: 73.3% on time from 1,699 flights
- 4 PM: 62.1% on time from 436 flights
- 5 PM: 69.3% on time from 1,076 flights
- 6 PM: 73.4% on time from 555 flights
- 7 PM: 68.3% on time from 411 flights
- 8 PM: 66.7% on time from 651 flights
- 9 PM: 73.6% on time from 782 flights
- 10 PM: 74.3% on time from 622 flights
- 11 PM: 75.3% on time from 500 flights
Why SLC → LAS runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for SLC → LAS. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on SLC → LAS, at 35.5%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 92.2% of the time and 6–9 PM departures 69.4%.
How this route holds up in bad weather
July 2023 – July 2026
The harder-hit end is LAS, where the flight lands. Its figure counts departures from LAS, so it says more about how that airport copes than about this route. Bad weather cancels 2.4 times the normal rate at LAS against barely any change at SLC. Cancelled in bad weather against normal hours: SLC 0.6% against 0.6%, LAS 2.0% against 0.8%. Flights that did leave LAS in bad weather arrived on time 58.5% of the time, against 78.5% in normal hours.
Bad weather and normal hours at the airports
Scheduled departures, July 2023 – July 2026| Departures from | SLC | LAS |
|---|---|---|
| Cancelled in bad weather | 0.6% | 2.0% |
| Cancelled in normal hours | 0.6% | 0.8% |
| Arrived on time, bad weather | 71.0% | 58.5% |
| Arrived on time, normal hours | 84.8% | 78.5% |
| Departures in bad weather | 20,014 | 14,522 |
Frontier Airlines (1.9% cancelled against 0.6% for the other carriers at SLC) cancelled more departures from SLC in bad weather than the other carriers there did in the same months. None of the route’s other carriers was clearly better. One more carrier flies this route but has too few bad-weather departures from SLC to compare.
This route’s airlines in bad weather at SLC
All departures from SLC| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| Delta Air Lines | 9,247 | 0.5%about level | 0.7% |
| Southwest Airlines | 2,115 | 0.6%about level | 0.6% |
| Frontier Airlines | 525 | 1.9%above the others | 0.6% |
These are airport figures, not route figures: every scheduled departure from SLC and LAS, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from SLC on every route.
Weather source and limits. In full: SLC (airlines), LAS, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Delta Air Lines | 5,355 | 78.0% | 0.49% | -3 min | 6.6% |
| Southwest Airlines | 4,763 | 76.6% | 0.40% | -4 min | 6.4% |
| Frontier Airlines | 1,571 | 76.8% | 1.72% | -10 min | 9.9% |
| Spirit Airlines | 1,022 | 70.5% | 0.98% | -3 min | 11.2% |
Delta Air Lines flew 42.1% of the 12,711 flights listed. Frontier Airlines cancelled 1.72% of its flights here against 0.40% for Southwest Airlines.
Delta Air Lines arrived on time 7.5 percentage points more often than Spirit Airlines on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
DL1698 (8:25 AM) arrived on time 88.6% of the time, 14.1 points more often than DL1672 (3:45 PM) at 74.5%.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Friday the least, a gap of 15.0 percentage points.
By month
- Jan: 79.4%
- Feb: 76.3%
- Mar: 72.7%
- Apr: 77.0%
- May: 79.3%
- Jun: 72.5%
- Jul: 71.3%
- Aug: 75.9%
- Sep: 76.0%
- Oct: 78.4%
- Nov: 81.9%
- Dec: 81.4%
July is historically the weakest month and November the strongest, a spread of 10.6 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 71.7% from 391 flights
- August 2023: 76.4% from 390 flights
- September 2023: 75.4% from 403 flights
- October 2023: 77.5% from 422 flights
- November 2023: 84.8% from 368 flights
- December 2023: 82.4% from 348 flights
- January 2024: 74.7% from 393 flights
- February 2024: 77.8% from 383 flights
- March 2024: 63.8% from 394 flights
- April 2024: 79.2% from 356 flights
- May 2024: 78.5% from 349 flights
- June 2024: 74.2% from 340 flights
- July 2024: 66.8% from 380 flights
- August 2024: 72.0% from 389 flights
- September 2024: 75.9% from 371 flights
- October 2024: 78.2% from 387 flights
- November 2024: 82.4% from 326 flights
- December 2024: 84.3% from 338 flights
- January 2025: 81.9% from 338 flights
- February 2025: 69.8% from 318 flights
- March 2025: 76.6% from 321 flights
- April 2025: 75.8% from 322 flights
- May 2025: 80.6% from 342 flights
- June 2025: 71.6% from 306 flights
- July 2025: 72.1% from 299 flights
- August 2025: 80.2% from 294 flights
- September 2025: 76.9% from 314 flights
- October 2025: 80.0% from 320 flights
- November 2025: 77.8% from 297 flights
- December 2025: 77.2% from 314 flights
- January 2026: 82.6% from 319 flights
- February 2026: 81.5% from 295 flights
- March 2026: 79.4% from 343 flights
- April 2026: 76.0% from 338 flights
- May 2026: 78.9% from 315 flights
- June 2026: 71.7% from 293 flights
- July 2026: 75.6% from 302 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 78.2% against 76.8% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 12,718 SLC → LAS flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed