Route profile
MIA→LAS
Flight reliability, delays and best times to fly from Miami to Las Vegas, 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 19% of comparable major US routes (4,598 compared)
Calculated from 4,867 flights. How this is calculated · What counts as on time
MIA → LAS arrives on time 70.6% of the time; the return trip, LAS → MIA, arrives on time 79.6% of the time, a 9.0-point gap between the two directions of the same city pair.
MIA → LAS spends 30.6 minutes on the ground on a 2,174-mile trip: 21.8 minutes from pushback to wheels-up at MIA and 8.8 minutes from touchdown to gate at LAS.
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 93% of 5,368 comparable routes.
72.7% on time over the most recent 12 months (2025-08 to 2026-07), against 72.3% 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 MIA to LAS differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
MIA to LAS struggles most at 4 PM: 59.5% of its flights scheduled then arrive on time, 15 points behind the 74.5% on routes of similar length at the same hour. Against all other routes the gap is 11.2 points.
Sunday is the day MIA to LAS slips furthest against routes of similar length, 65.1% on time where they average 76.4%, 11.3 points lower. Against all other routes the gap is 9.7 points.
In March, MIA to LAS runs 14.8 points below routes of similar length, 64.7% on time to 79.5%. Against all other routes the gap is 13.2 points.
American Airlines’ flights on MIA to LAS arrive on time 70.0% of the time, 8.8 points below the 78.8% it manages on its routes of similar length. Against all other routes the gap is 5.1 points.
MIA to LAS against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 4 PM departures | 59.5% | routes of similar length | 74.5% | −15.0 pts | 328 here, 58,377 there |
| Weekday: Sunday | 65.1% | routes of similar length | 76.4% | −11.3 pts | 682 here, 161,035 there |
| Month: March | 64.7% | routes of similar length | 79.5% | −14.8 pts | 368 here, 87,653 there |
| Airline: American Airlines | 70.0% | routes of similar length | 78.8% | −8.8 pts | 3,780 here, 232,816 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
63 min late
against a median of 2 min early
MIA → LAS has an average that understates its risk: a typical arrival is 2 min early, but the worst tenth are 65 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 4,867 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at LAS after arriving from MIA.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 46% | Likely to miss |
| 45 min | 29% | High risk |
| 60 min | 19% | High risk |
| 90 min | 10% | Some risk |
| 120 min | 6.4% | Some 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 0.88% of the time and diverts 0.23% of the time, which a late arrival never shows up in.
Chance of missing is the share of 4,813 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 63 minutes late (90th-percentile gate arrival delay), over 4,867 operations.
Any other layover length: connection checker.
Best time to fly
MIA → LAS flights departing 5–9 AM arrived on time 85.7% of the time, against 61.8% for 9 PM–5 AM departures, a gap of 23.9 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 84.3% on time from 185 flights
- 7 AM: 86.8% on time from 267 flights
- 8 AM: 85.6% on time from 746 flights
- 9 AM: 80.7% on time from 334 flights
- 10 AM to 2 PM: too few flights to score
- 3 PM: 68.9% on time from 239 flights
- 4 PM: 59.5% on time from 337 flights
- 5 PM: 61.0% on time from 590 flights
- 6 PM: 68.9% on time from 232 flights
- 7 PM: 66.3% on time from 766 flights
- 8 PM: 62.6% on time from 565 flights
- 9 PM: 64.3% on time from 451 flights
- 10 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why MIA → LAS 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 MIA → LAS. 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 | 3,815 | 70.0% | 0.68% | -1 min | 10.1% |
| Spirit Airlines | 847 | 74.9% | 1.53% | -5 min | 10.0% |
American Airlines flew 81.8% of the 4,662 flights listed.
Spirit Airlines arrived on time 4.9 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 9.7 percentage points.
By month
- Jan: 70.4%
- Feb: 76.0%
- Mar: 64.7%
- Apr: 81.1%
- May: 67.5%
- Jun: 64.7%
- Jul: 58.3%
- Aug: 68.7%
- Sep: 69.7%
- Oct: 79.0%
- Nov: 77.3%
- Dec: 77.4%
July is historically the weakest month and April the strongest, a spread of 22.8 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 60.7% from 185 flights
- August 2023: 67.2% from 185 flights
- September 2023: too few flights to score (106)
- October 2023: too few flights to score (119)
- November 2023: too few flights to score (119)
- December 2023: too few flights to score (119)
- January 2024: 63.3% from 122 flights
- February 2024: too few flights to score (114)
- March 2024: 50.4% from 123 flights
- April 2024: 88.1% from 120 flights
- May 2024: 61.0% from 124 flights
- June 2024: too few flights to score (119)
- July 2024: 50.0% from 124 flights
- August 2024: 60.2% from 123 flights
- September 2024: 67.5% from 120 flights
- October 2024: 81.0% from 149 flights
- November 2024: 81.6% from 147 flights
- December 2024: 76.9% from 149 flights
- January 2025: 71.3% from 157 flights
- February 2025: 80.9% from 141 flights
- March 2025: 65.6% from 155 flights
- April 2025: 84.9% from 139 flights
- May 2025: 67.5% from 160 flights
- June 2025: 66.7% from 168 flights
- July 2025: 64.2% from 161 flights
- August 2025: 77.1% from 154 flights
- September 2025: too few flights to score (114)
- October 2025: 79.1% from 130 flights
- November 2025: too few flights to score (118)
- December 2025: 80.5% from 134 flights
- January 2026: too few flights to score (108)
- 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: 74.0% from 126 flights
- June 2026: too few flights to score (89)
- July 2026: 56.0% from 151 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 72.7% against 72.3% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 4,867 MIA → 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