Las Vegas to Miami Flight Delays
Sample size: 4,830 LAS–MIA flights, January 2023 to December 2025 (BTS). 22.61% of Las Vegas to Miami flights arrived at least 15 minutes late. That is 1.6 points better than the 24.2% median for those routes, making this one of the steadier pairings in the network. Departure time moves the odds more than anything else on this route: 06:00 departures run 15.6% late against 38.61% for 11:00. Tuesday is the calmest day at 19.12%, Thursday the worst at 27.43%. Cancellations (2024 to 2025) peak in June at 2.44% of scheduled flights and bottom out in February at 0%. Last updated: 2026-10-01.
These figures are historical US domestic rates, not a forecast for one departure. Use the free delay prediction for your trip before you book.
LAS airport delay guide · MIA airport delay guide · Predict a LAS to MIA flight
Best time to fly LAS to MIA
The best time to fly LAS to MIA is the 6 AM departure and fly on a Tuesday, not a Thursday (19.12% against 27.43%): 15.6% of 6 AM flights arrived 15+ minutes late, against 38.61% at 11 AM.
Lowest observed delay rates depart 06:00–08:00. The highest sit at 11:00–12:00, 15:00. Only departure hours with at least 100 recorded flights are listed, so sparse hours are blank rather than estimated.
| Departure hour | Delayed 15+ min | Flights observed |
|---|---|---|
| 00:00 | 25.29% | 518 |
| 06:00 | 15.6% | 141 |
| 07:00 | 17.84% | 454 |
| 08:00 | 16.14% | 409 |
| 10:00 | 21.64% | 134 |
| 11:00 | 38.61% | 158 |
| 12:00 | 35.38% | 571 |
| 13:00 | 27.2% | 375 |
| 15:00 | 27.78% | 144 |
| 21:00 | 20.33% | 246 |
| 22:00 | 21.28% | 376 |
| 23:00 | 18.19% | 1,138 |
LAS to MIA flight time and distance
Scheduled gate-to-gate time from LAS to MIA is a median 4 h 42 min. Flights actually took a median 4 h 33 min gate to gate, including 4 h 6 min in the air. 2.4% ran 30 or more minutes over schedule and 74.6% arrived sooner than scheduled (BTS data, January 2023 to December 2025).
LAS to MIA is 2,174 miles (BTS data).
| Airline | Scheduled (median) | Actual (median) | In the air (median) | 30+ min over schedule | Flights |
|---|---|---|---|---|---|
| American Airlines | 4 h 42 min | 4 h 33 min | 4 h 6 min | 2.3% | 3,454 |
| Spirit Airlines (ceased operating May 2026) | 4 h 45 min | 4 h 35 min | 4 h 9 min | 2.4% | 1,062 |
| Frontier Airlines | 4 h 47 min | 4 h 34 min | 4 h 9 min | 2.6% | 311 |
How late, and why
When a LAS to MIA flight was late (15+ minutes), it arrived an average of 83 minutes late (median 40). 7.6% of all completed flights arrived an hour or more late (BTS data, 2023 to 2025).
Of the delay minutes on late LAS to MIA flights, 40.8% were caused by the airline (crew, maintenance, ground handling), 36.0% by a late incoming aircraft, 20.0% by the air-traffic system (volume, non-extreme weather, airport operations), 2.7% by extreme weather and 0.5% by security (BTS data, 2023 to 2025).
| Cause | Share of delay minutes |
|---|---|
| airline | 40.8% |
| late incoming aircraft | 36.0% |
| air-traffic system | 20.0% |
| extreme weather | 2.7% |
| security | 0.5% |
BTS assigns causes to delay minutes on flights that arrived 15+ minutes late. "Air-traffic system" includes non-extreme weather that slows traffic.
LAS to MIA delays by day of week
| Day | Delayed 15+ min | Flights observed |
|---|---|---|
| Mon | 21.59% | 681 |
| Tue | 19.12% | 680 |
| Wed | 19.82% | 676 |
| Thu | 27.43% | 711 |
| Fri | 23.7% | 709 |
| Sat | 20.24% | 672 |
| Sun | 25.96% | 701 |
Month-by-month cancellation pattern
Share of scheduled LAS–MIA flights cancelled in each month, from BTS 2024–2025 on-time reporting. These are cancellations, not delays. Delay figures on this page cover January 2023 to December 2025.
| Month | Cancelled | Flights scheduled |
|---|---|---|
| Jan | 0.36% | 277 |
| Feb | 0% | 255 |
| Mar | 0.36% | 277 |
| Apr | 0.39% | 257 |
| May | 1.76% | 284 |
| Jun | 2.44% | 287 |
| Jul | 2.11% | 285 |
| Aug | 1.45% | 275 |
| Sep | 0.43% | 231 |
| Oct | 0.36% | 277 |
| Nov | 0% | 268 |
| Dec | 0% | 283 |
Airlines on LAS to MIA: delays and cancellations
American Airlines flies this route today. Spirit Airlines also appear in the history below but has ceased operations. Only carriers with at least 200 scheduled flights on the pairing are listed. Delay rates cover January 2023 to December 2025; cancellation rates cover 2024 to 2025.
| Airline | Share of flights | Delayed 15+ min | Cancelled | Flights scheduled |
|---|---|---|---|---|
| American Airlines | 80% | 21.08% | 0.62% | 2,594 |
| Spirit Airlines (ceased operations 2 May 2026) | 18% | 22.03% | 1.69% | 590 |
Related pages
- LAS delays: rate, worst hours and live risk
- MIA delays: rate, worst hours and live risk
- US airline cancellation rates
- Thanksgiving and Christmas 2026 flight delay guide
- Predict a LAS to MIA flight
Check your odds: Will my flight be delayed? · Will my flight be cancelled?
LAS vs MIA: airport conditions
Both ends of a route shape its delay profile. These are DelayGuard's operational scores for Las Vegas and Miami.
| Measure | LAS (Las Vegas) | MIA (Miami) |
|---|---|---|
| Congestion | moderate | high |
| Weather risk | low | moderate |
| NAS vulnerability | moderate | high |
| Average taxi-out | 13 min | 17 min |
| Runways | 4 | 4 |
LAS to MIA questions
- How long is the flight from Las Vegas to Miami?
- Scheduled gate-to-gate time from LAS to MIA is a median 4 h 42 min, and flights actually took a median 4 h 33 min including 4 h 6 min in the air. 2.4% ran 30+ minutes over schedule (BTS data, January 2023 to December 2025).
- How often do LAS to MIA flights get delayed?
- Across 4,830 recorded LAS–MIA departures, January 2023 to December 2025 (BTS), 22.61% arrived at least 15 minutes late. Departure time matters most: 6:00 departures run 15.6% late against 38.61% for 11:00. Actual delay frequency varies by airline, time of day, and season.
- What is the best time of year to fly LAS to MIA?
- Las Vegas (NV) sees its highest delays during November–February (coastal fog) with generally low risk year-round. Miami (FL) peaks during June–September (convective/thunderstorm season). The dominant seasonal risk on this route sits at the destination (Miami) — use the DelayGuard predictor to check conditions for your specific travel date.
- Which airline is most reliable on LAS to MIA?
- Among the carriers BTS records on LAS→MIA, ranked by each airline's network-wide delay rate — the share of that airline's flights that arrived 15 or more minutes late, January 2023 to December 2025 (BTS), not measured on this route — the strongest are American Airlines (25.0%). Use the DelayGuard predictor above to check your specific airline, date, and departure hour — conditions vary significantly by day.
- How late are LAS to MIA flights when they are delayed?
- When a LAS to MIA flight was late (15+ minutes), it arrived an average of 83 minutes late (median 40). 7.6% of all completed flights arrived an hour or more late (BTS data, 2023 to 2025).
- How accurate is DelayGuard's delay prediction for this route?
- DelayGuard's delay risk score comes from an ML model trained on BTS data (3.95 million US domestic flights, 2023 to mid-2025), with live weather data (within 5 days of departure) and FAA NAS advisories (within 6 hours) — a likelihood of delay, not a guarantee.
Delay figures reflect arrivals 15 or more minutes late in BTS on-time reporting. Cancellation figures are separate and count flights that never operated. Hours, days and months with fewer than 100 recorded flights are omitted rather than estimated.