Route · FLL → SJU · 2020–2025 BTS data
Fort Lauderdale to San Juan
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), FLL to SJU (Fort Lauderdale to San Juan) ranks #643 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.8%
- On-time
- -4.2 pts
- vs US avg
- 67 min
- Delay when late
- 14,622
- Flights
- #643 of 4927
- Corpus placement
Cancelled
0.7%
Best Month
Apr 2024 83%
Worst Month
Dec 2025 57%
Distance
1,046 mi
Carriers
14
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 261 | 111 | 3 | 0 | B6,WN,F9,NK |
| Nov 2025 | 226 | 54 | 2 | 1 | F9,NK,B6,WN |
| Oct 2025 | 147 | 27 | 0 | 0 | B6,WN,F9,NK |
| Sep 2025 | 121 | 23 | 0 | 0 | WN,NK,F9,B6 |
| Aug 2025 | 195 | 57 | 3 | 0 | WN,F9,NK,B6 |
| Jul 2025 | 223 | 56 | 2 | 0 | B6,NK,WN,F9 |
| Jun 2025 | 193 | 48 | 0 | 0 | B6,NK,WN,F9 |
| May 2025 | 184 | 31 | 0 | 0 | B6,NK,WN,F9 |
| Apr 2025 | 160 | 35 | 1 | 0 | F9,NK,WN,B6 |
| Mar 2025 | 243 | 61 | 0 | 0 | B6,WN,F9,NK |
| Feb 2025 | 177 | 39 | 1 | 0 | B6,WN,F9,NK |
| Jan 2025 | 205 | 55 | 0 | 2 | B6,WN,F9,NK |
| Dec 2024 | 223 | 67 | 1 | 0 | B6,F9,NK,WN |
| Nov 2024 | 217 | 40 | 0 | 0 | B6,NK,WN,F9 |
| Oct 2024 | 199 | 40 | 1 | 0 | WN,NK,F9,B6 |
| Sep 2024 | 164 | 43 | 0 | 0 | WN,B6,F9,NK |
| Aug 2024 | 208 | 84 | 4 | 0 | B6,F9,NK,WN |
| Jul 2024 | 261 | 73 | 4 | 0 | B6,F9,NK,WN |
| Jun 2024 | 255 | 76 | 12 | 0 | B6,F9,NK,WN |
| May 2024 | 221 | 58 | 0 | 0 | B6,NK,WN |
| Apr 2024 | 179 | 30 | 0 | 0 | B6,NK,WN |
| Mar 2024 | 163 | 50 | 1 | 0 | B6,NK,WN |
| Feb 2024 | 145 | 31 | 0 | 1 | B6,NK,WN |
| Jan 2024 | 174 | 50 | 0 | 0 | B6,NK,WN |
FLL–SJU seasonal on-time pattern
Best: October (80.4%) · weakest: June (67.5%)
Strongest calendar month
October
80.4% on-time · ~181 flights/mo
Busiest calendar month
July
~235 flights/mo avg
Weakest calendar month
June
67.5% on-time · ~212 flights/mo
Cancellation Rate
0.7%
35 of 4,744 flights
Diversion Rate
0.1%
4 of 4,744 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
FLL - Fort Lauderdale
Full on-time, delay-cause, and seasonal performance for Fort Lauderdale, FL.
FLL on-time profileSJU - San Juan
Full on-time, delay-cause, and seasonal performance for San Juan, PR.
SJU on-time profileCompare the two airports
See FLL and SJU side by side on delays, cancellations, and reliability.
Compare FLL vs SJUOrigin-hub reliability standing
Softer reliability from FLL
Among 62 routes leaving FLL, only 29 (including this one) clear below 75% on-time, while 1 stay ≥85% and 32 sit mid-band. Travelers comparing FLL options should weigh this 74.8% print against those peers · fleet on-time rank #4506 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to FLL–SJU.
Routes with a similar on-time rate
What the Data Says About FLL to SJU
On-time performance on the FLL to SJU pairing (Fort Lauderdale to San Juan) trails a chunk of the network: 74.8% of 14,622 tracked flights arrived on schedule, with a 66.5-minute average delay on the ones that ran late. The route spans about 1,046 miles across 14 carriers. Cancellations over the trailing 24 months hit 0.7% (35 of 4,744 flights), with 0.1% diverted.
The monthly split is wide on this route: Apr 2024 posted the strongest performance at 83% on-time, while Dec 2025 came in at just 57% - a 26-point swing worth factoring into travel timing.
On the multi-year calendar, FLL–SJU peaks in October at 80.4% on-time while July carries the heaviest traffic (~235 flights per month) ; the softest month is June at 67.5%, a 12.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does FLL to SJU rank among US routes by traffic? ▼
How often are flights delayed from FLL to SJU? ▼
What is the cancellation rate for FLL to SJU? ▼
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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 FLL–SJU data
FLL–SJU sits 4.2 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare FLL and SJU airport profiles: delay causes and top routes differ even on the same corridor. FLL airport
- If your dates flex, October (80.4% on-time) beats June (67.5%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.8% 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.