MIA to LAS flight delays & on-time performance
Nonstop flights from Miami International Airport to Harry Reid International Airport · 2,174 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MIA or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Miami (MIA) to Las Vegas (LAS) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.8% were cancelled, and 9% arrived an hour or more late.
- American Airlines was the most punctual airline here (73% on time); Frontier Airlines was the least (66%).
- Departures scheduled around 8am did best (93% on time); around 8pm did worst (60%).
- Wednesday was the most reliable day to fly (79% on time) and Sunday the least (63%).
- The largest source of delay minutes was late-arriving aircraft (41%).
Which airline is most on time from MIA to LAS?
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 |
|---|---|---|---|---|---|
| American Airlines | 73% | 0.7% | 17 min | 8.5% | 1,275 |
| Delta Air Lines | 67% | 0.0% | 15 min | 0.0% | 3 |
| Frontier Airlines | 66% | 1.1% | 28 min | 18.2% | 89 |
| Spirit Airlines | 64% | 3.8% | 25 min | 18.0% | 52 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am84%38 flights
- 8am93%259 flights
- 9am84%123 flights
- 3pm71%70 flights
- 4pm69%115 flights
- 5pm63%196 flights
- 7pm69%205 flights
- 8pm60%201 flights
- 9pm71%171 flights
- 10pm41%29 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%2.4% cancelled
- Tuesday78%1.0% cancelled
- Wednesday79%0.5% cancelled
- Thursday70%0.0% cancelled
- Friday75%0.5% cancelled
- Saturday73%0.0% cancelled
- Sunday63%1.5% 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 aircraft41%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion18%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather83%
- Airline (crew, maintenance, cleaning, fueling)8%
- Air traffic control & airport congestion8%
- Security0%
MIA to LAS: common questions
- How often are MIA to LAS flights on time?
- 73% 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 Miami to Las Vegas cancelled?
- 0.8% of scheduled flights were cancelled (12 of 1,419).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 62 min behind schedule on average, and 9.4% of flights were an hour or more late.
- How long is taxi time at MIA?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to MIA — 82% on time
More flights from Miami
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MIA → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.