Route · MIA → SJU · 2020–2025 BTS data
Miami to San Juan
The MIA–SJU corridor (Miami, FL → San Juan, PR) runs behind the national average, served by 8 carriers across roughly 1,045 miles.
Data updated 2026-06-13
- 78.3%
- On-time
- -0.7 pts
- vs US avg
- 73 min
- Delay when late
- 14,957
- Flights
Cancelled
0.8%
Best Month
Oct 2024 90%
Worst Month
Jul 2025 63%
Distance
1,045 mi
Carriers
8
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 257 | 50 | 2 | 0 | F9,NK,AA |
| Nov 2025 | 212 | 50 | 1 | 0 | F9,NK,AA |
| Oct 2025 | 176 | 47 | 0 | 0 | AA,F9 |
| Sep 2025 | 168 | 36 | 0 | 0 | NK,F9,AA |
| Aug 2025 | 210 | 65 | 1 | 0 | AA,F9,NK |
| Jul 2025 | 215 | 80 | 1 | 0 | AA,NK,F9 |
| Jun 2025 | 207 | 48 | 5 | 0 | AA,F9,NK |
| May 2025 | 209 | 37 | 0 | 1 | AA,F9,NK |
| Apr 2025 | 221 | 44 | 0 | 0 | F9,NK,AA |
| Mar 2025 | 246 | 59 | 3 | 0 | AA,F9,NK |
| Feb 2025 | 227 | 34 | 1 | 0 | AA,F9,NK |
| Jan 2025 | 242 | 66 | 0 | 1 | AA,F9,NK |
| Dec 2024 | 246 | 72 | 0 | 0 | AA,F9,NK |
| Nov 2024 | 234 | 45 | 0 | 1 | NK,F9,AA |
| Oct 2024 | 219 | 21 | 4 | 0 | NK,F9,AA |
| Sep 2024 | 221 | 28 | 0 | 0 | AA,F9,MQ,NK |
| Aug 2024 | 278 | 92 | 4 | 0 | AA,F9,MQ,NK |
| Jul 2024 | 285 | 69 | 3 | 1 | AA,F9,NK |
| Jun 2024 | 260 | 85 | 12 | 0 | AA,F9,NK |
| May 2024 | 280 | 69 | 1 | 1 | AA,F9,NK |
| Apr 2024 | 267 | 55 | 0 | 1 | AA,F9,NK |
| Mar 2024 | 244 | 75 | 3 | 1 | AA,F9,NK |
| Feb 2024 | 208 | 41 | 1 | 1 | AA,F9,NK |
| Jan 2024 | 221 | 66 | 0 | 0 | AA,F9,NK |
Cancellation Rate
0.8%
42 of 5,553 flights
Diversion Rate
0.1%
8 of 5,553 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
Origin airport →SJU - San Juan
Full on-time, delay-cause, and seasonal performance for San Juan, PR.
Destination airport →Compare the two airports
See MIA and SJU side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MIA–SJU.
Routes with a similar on-time rate
What the Data Says About MIA to SJU
The Miami to San Juan corridor (MIA to SJU) posts a 78.3% on-time rate on the lower edge of the average band, based on 14,957 tracked flights. Late flights run 73.1 minutes behind on average. 8 carriers cover the 1,045-mile route; over the last 24 months, 42 of 5,553 flights were cancelled (0.8%) and 0.1% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 90% on-time, while Jul 2025 came in at just 63% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.