LAS to DEN flight delays & on-time performance
Nonstop flights from Harry Reid International Airport to Denver International Airport · 628 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAS or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Las Vegas (LAS) to Denver (DEN) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.8% were cancelled, and 8% arrived an hour or more late.
- United Airlines was the most punctual airline here (84% on time); Southwest Airlines was the least (71%).
- Departures scheduled around 5am did best (97% on time); around 2pm did worst (58%).
- Saturday was the most reliable day to fly (83% on time) and Friday the least (72%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from LAS to DEN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 84% | 0.4% | 11 min | 6.2% | 2,388 |
| Frontier Airlines | 78% | 1.0% | 21 min | 9.9% | 1,595 |
| Southwest Airlines | 71% | 1.0% | 17 min | 8.5% | 3,119 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12am80%333 flights
- 5am97%478 flights
- 6am90%547 flights
- 7am86%314 flights
- 8am89%312 flights
- 9am89%691 flights
- 10am91%171 flights
- 11am83%502 flights
- 12pm71%219 flights
- 1pm71%587 flights
- 2pm58%383 flights
- 3pm61%465 flights
- 4pm71%624 flights
- 5pm61%259 flights
- 6pm68%458 flights
- 7pm81%186 flights
- 8pm70%277 flights
- 9pm65%261 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday72%0.7% cancelled
- Tuesday81%0.8% cancelled
- Wednesday82%0.5% cancelled
- Thursday75%0.6% cancelled
- Friday72%1.2% cancelled
- Saturday83%0.6% cancelled
- Sunday77%1.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft46%
- Air traffic control & airport congestion26%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)36%
- Air traffic control & airport congestion36%
- Extreme weather27%
- Security0%
LAS to DEN: common questions
- How often are LAS to DEN flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Las Vegas to Denver cancelled?
- 0.8% of scheduled flights were cancelled (55 of 7,102).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 65 min behind schedule on average, and 8.1% of flights were an hour or more late.
- How long is taxi time at LAS?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to LAS — 76% on time
More flights from Las Vegas
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAS → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.