Route · SJU → MIA · 2020–2025 BTS data
San Juan to Miami
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SJU to MIA (San Juan to Miami) ranks #617 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 80.5%
- On-time
- +1.5 pts
- vs US avg
- 93 min
- Delay when late
- 14,957
- Flights
- #617 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
Oct 2024 89%
Worst Month
Mar 2024 61%
Distance
1,045 mi
Carriers
8
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 258 | 44 | 2 | 0 | F9,NK,AA |
| Nov 2025 | 211 | 41 | 1 | 0 | F9,NK,AA |
| Oct 2025 | 176 | 45 | 0 | 1 | AA,F9 |
| Sep 2025 | 168 | 38 | 0 | 0 | NK,F9,AA |
| Aug 2025 | 210 | 54 | 1 | 1 | AA,F9,NK |
| Jul 2025 | 216 | 61 | 1 | 0 | AA,NK,F9 |
| Jun 2025 | 207 | 37 | 6 | 1 | AA,F9,NK |
| May 2025 | 209 | 42 | 0 | 0 | AA,F9,NK |
| Apr 2025 | 222 | 46 | 0 | 0 | F9,NK,AA |
| Mar 2025 | 247 | 61 | 2 | 1 | AA,F9,NK |
| Feb 2025 | 227 | 45 | 1 | 0 | AA,F9,NK |
| Jan 2025 | 245 | 64 | 0 | 0 | AA,F9,NK |
| Dec 2024 | 244 | 68 | 0 | 0 | AA,F9,NK |
| Nov 2024 | 232 | 37 | 1 | 0 | NK,F9,AA |
| Oct 2024 | 219 | 23 | 4 | 0 | NK,F9,AA |
| Sep 2024 | 221 | 30 | 0 | 1 | AA,F9,MQ,NK |
| Aug 2024 | 279 | 90 | 4 | 1 | AA,F9,MQ,NK |
| Jul 2024 | 284 | 75 | 4 | 1 | AA,F9,NK |
| Jun 2024 | 261 | 78 | 11 | 0 | AA,F9,NK |
| May 2024 | 279 | 68 | 1 | 1 | AA,F9,NK |
| Apr 2024 | 267 | 63 | 1 | 0 | AA,F9,NK |
| Mar 2024 | 243 | 95 | 3 | 0 | AA,F9,NK |
| Feb 2024 | 208 | 58 | 0 | 0 | AA,F9,NK |
| Jan 2024 | 222 | 63 | 0 | 0 | AA,F9,NK |
SJU–MIA seasonal on-time pattern
Best: February (85.3%) · weakest: June (74.4%)
Strongest calendar month
February
85.3% on-time · ~199 flights/mo
Busiest calendar month
July
~228 flights/mo avg
Weakest calendar month
June
74.4% on-time · ~207 flights/mo
Cancellation Rate
0.8%
43 of 5,555 flights
Diversion Rate
0.1%
8 of 5,555 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SJU - San Juan
Full on-time, delay-cause, and seasonal performance for San Juan, PR.
SJU on-time profileMIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
MIA on-time profileCompare the two airports
See SJU and MIA side by side on delays, cancellations, and reliability.
Compare SJU vs MIAOrigin-hub reliability standing
Mid-pack among SJU departures
From SJU, this corridor sits with 14 other 75–85% on-time routes out of 21 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 6 below 75%). Destination: Miami · fleet on-time rank #2950 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SJU–MIA.
Routes with a similar on-time rate
What the Data Says About SJU to MIA
14,957 tracked flights put the SJU to MIA pairing (San Juan to Miami) at a 80.5% on-time rate, squarely in line with the wider network. Delays that do occur run 93.2 minutes on average. Across the 1,045-mile route and its 8 carriers, the trailing 24 months show 0.8% cancelled and 0.1% diverted (5,555 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 89% on-time, while Mar 2024 came in at just 61% - a 29-point swing worth factoring into travel timing.
On the multi-year calendar, SJU–MIA peaks in February at 85.3% on-time while July carries the heaviest traffic (~228 flights per month) ; the softest month is June at 74.4%, a 10.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SJU to MIA rank among US routes by traffic? ▼
How often are flights delayed from SJU to MIA? ▼
What is the cancellation rate for SJU to MIA? ▼
How far is the flight from SJU to MIA? ▼
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Airports on this route
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.
Using SJU–MIA data
SJU–MIA is mid-pack at 80.5% on-time; month and carrier mix move more than the corridor headline.
- Compare SJU and MIA airport profiles: delay causes and top routes differ even on the same corridor. SJU airport
- If your dates flex, February (85.3% on-time) beats June (74.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 80.5% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.