Route profile
LAS→MIA
Flight reliability, delays and best times to fly from Las Vegas to Miami, 2,174 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 4,858 flights. How this is calculated · What counts as on time
LAS → MIA arrives on time 79.6% of the time; the return trip, MIA → LAS, arrives on time 70.6% of the time, a 9.0-point gap between the two directions of the same city pair.
LAS → MIA spends 28.7 minutes on the ground on a 2,174-mile trip: 19.0 minutes from pushback to wheels-up at LAS and 9.7 minutes from touchdown to gate at MIA.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
This route has stayed remarkably steady year over year, a smaller swing than 98% of 5,368 comparable routes.
82.3% on time over the most recent 12 months (2025-08 to 2026-07), against 82.2% in the 12 months before (2024-08 to 2025-07), virtually unchanged.
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 5,368 in the comparison.
What sets this route apart
Where LAS to MIA differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
LAS to MIA struggles most at 12 PM: 68.0% of its flights scheduled then arrive on time, 10.1 points behind the 78.1% on routes of similar length at the same hour. Against all other routes the gap is 11.4 points.
LAS to MIA is at its best against routes of similar length for flights scheduled at 11 PM: 84.8% arrive on time, 3.9 points ahead of the 80.9% those routes manage at that hour. Against all other routes the gap is 5.7 points.
December is kinder to LAS to MIA than to routes of similar length: 86.6% on time against 79.8%, 6.8 points better. Against all other routes the gap is 7.8 points.
In March, LAS to MIA runs 4.9 points below routes of similar length, 74.5% on time to 79.4%.
Spirit Airlines does better on LAS to MIA than on its routes of similar length: 82.6% on time here, 77.4% there, 5.2 points apart. Against all other routes the gap is 7.4 points.
LAS to MIA against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 12 PM departures | 68.0% | routes of similar length | 78.1% | −10.1 pts | 578 here, 52,618 there |
| Hour: 11 PM departures | 84.8% | routes of similar length | 80.9% | +3.9 pts | 1,122 here, 63,575 there |
| Month: December | 86.6% | routes of similar length | 79.8% | +6.8 pts | 402 here, 87,998 there |
| Month: March | 74.5% | routes of similar length | 79.4% | −4.9 pts | 365 here, 87,656 there |
| Airline: Spirit Airlines | 82.6% | routes of similar length | 77.4% | +5.2 pts | 829 here, 44,045 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 2,174 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
When it goes wrong
July 2023 – July 2026
41 min late
against a median of 8 min early
Percentiles over 4,858 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at MIA after arriving from LAS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 35% | Likely to miss |
| 45 min | 20% | High risk |
| 60 min | 13% | Some risk |
| 90 min | 7.1% | Some risk |
| 120 min | 4.5% | 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 0.82% of the time and diverts 0.82% of the time, which a late arrival never shows up in.
Chance of missing is the share of 4,778 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 41 minutes late (90th-percentile gate arrival delay), over 4,858 operations.
Any other layover length: connection checker.
Best time to fly
LAS → MIA flights departing 5–9 AM arrived on time 84.0% of the time, against 71.9% for 12–3 PM departures, a gap of 12.1 percentage points.
By departure window
By departure hour
- 12 AM: 76.6% on time from 404 flights
- 1 AM to 5 AM: too few flights to score
- 6 AM: 83.3% on time from 197 flights
- 7 AM: 83.8% on time from 456 flights
- 8 AM: 83.6% on time from 434 flights
- 9 AM to 11 AM: too few flights to score
- 12 PM: 68.0% on time from 591 flights
- 1 PM: 75.7% on time from 457 flights
- 2 PM to 8 PM: too few flights to score
- 9 PM: 79.7% on time from 248 flights
- 10 PM: 80.4% on time from 468 flights
- 11 PM: 84.8% on time from 1,135 flights
Departure windows with fewer than 120 flights are not scored.
Why LAS → MIA runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
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 LAS → MIA. Only delays of 15 minutes or more are attributed. What the five causes mean
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 |
|---|---|---|---|---|---|
| American Airlines | 3,816 | 79.8% | 0.73% | -9 min | 7.5% |
| Spirit Airlines | 840 | 82.6% | 1.19% | -10 min | 4.6% |
American Airlines flew 82.0% of the 4,656 flights listed.
Spirit Airlines arrived on time 2.8 percentage points more often than American Airlines on this route.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 8.9 percentage points.
By month
- Jan: 79.0%
- Feb: 86.6%
- Mar: 74.5%
- Apr: 84.9%
- May: 84.1%
- Jun: 70.1%
- Jul: 67.1%
- Aug: 72.4%
- Sep: 84.0%
- Oct: 86.1%
- Nov: 87.9%
- Dec: 86.6%
July is historically the weakest month and November the strongest, a spread of 20.8 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 67.6% from 185 flights
- August 2023: 66.9% from 186 flights
- September 2023: too few flights to score (105)
- October 2023: too few flights to score (119)
- November 2023: 90.0% from 120 flights
- December 2023: too few flights to score (119)
- January 2024: 71.1% from 122 flights
- February 2024: too few flights to score (116)
- March 2024: 72.1% from 123 flights
- April 2024: 78.2% from 120 flights
- May 2024: 83.2% from 123 flights
- June 2024: 59.5% from 120 flights
- July 2024: 51.8% from 123 flights
- August 2024: 75.2% from 124 flights
- September 2024: too few flights to score (119)
- October 2024: 90.5% from 148 flights
- November 2024: 91.3% from 149 flights
- December 2024: 87.2% from 149 flights
- January 2025: 83.2% from 155 flights
- February 2025: 85.6% from 139 flights
- March 2025: 77.6% from 154 flights
- April 2025: 86.8% from 137 flights
- May 2025: 82.3% from 161 flights
- June 2025: 69.3% from 167 flights
- July 2025: 71.3% from 162 flights
- August 2025: 77.0% from 151 flights
- September 2025: too few flights to score (112)
- October 2025: 85.3% from 129 flights
- November 2025: too few flights to score (119)
- December 2025: 88.1% from 134 flights
- January 2026: too few flights to score (107)
- February 2026: too few flights to score (84)
- March 2026: too few flights to score (93)
- April 2026: too few flights to score (118)
- May 2026: 87.3% from 126 flights
- June 2026: too few flights to score (89)
- July 2026: 73.6% from 151 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 82.3% against 82.2% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 4,858 LAS → MIA 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