Fort Lauderdale (FLL) to San Juan (SJU): On-Time Performance
Data through May 2026
When you fly FLL to SJU matters as much as anything else about the booking: the route swung from 83% on-time in May 2025 to just 50% in March 2026. Across the full period the route averages 71% on-time against a national 78%. Morning departures also hold up better than evening ones (79% vs 61%), which matters most in the rough months.
- On-time
- 71%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 6.4
- last 12 months
- Duration
- 2h 35m
- scheduled
- Distance
- 1,046 mi
Best airline from FLL to SJU
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| JetBlue Airwaysmost reliable | 73% | 16 min | 0.8% | 3,111 |
| Southwest Airlines | 71% | 17 min | 0.7% | 747 |
| Spirit Airlines | 65% | 23 min | 1.5% | 740 |
| Frontier Airlines | 60% | 40 min | 4.9% | 243 |
Monthly on-time trend
Best time to fly from FLL to SJU
Aim for departures around 5 a.m. (95% on-time); avoid 9 p.m. departures (44%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 22 min |
| Tuesdaybest | 81% | 13 min |
| Wednesday | 81% | 10 min |
| Thursday | 68% | 20 min |
| Friday | 69% | 19 min |
| Saturday | 67% | 20 min |
| Sunday | 65% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft44%
- Airline operations35%
- National airspace system17%
- Weather5%
Frequently asked questions
- How often are flights from FLL to SJU delayed?
- 29% of FLL–SJU flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from FLL to SJU?
- JetBlue Airways has the best on-time record on this route at 73%, based on 3,111 flights. 4 airlines flew FLL–SJU frequently enough to compare in this period.
- What is the best time of day to fly from FLL to SJU?
- Departures around 5 a.m. have the best record (95% on-time), while departures around 9 p.m. have the worst (44%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from FLL to SJU?
- The scheduled FLL–SJU flight time averages 2h 35m over 1,046 miles. Actual arrival times vary — flights on this route land 15+ minutes late 29% of the time.
- How often are FLL to SJU flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from FLL to SJU?
- March 2026 was the roughest month in this dataset, with only 50% of arrivals on time. The best was May 2025 at 83%. If your dates are flexible, that 33-point gap is worth planning around.
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Based on 4,841 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.