San Juan (SJU) to Fort Lauderdale (FLL): On-Time Performance
Data through July 2026
The calendar drives reliability on SJU–FLL. May 2025 flights landed on schedule 88% of the time, but March 2026 dropped to 62% — a gap of 25 points. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 65%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 6.4
- last 12 months
- Duration
- 2h 49m
- scheduled
- Distance
- 1,046 mi
Best airline from SJU to FLL
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 80% | 10 min | 0.3% | 689 |
| JetBlue Airways | 77% | 18 min | 0.8% | 3,333 |
| Frontier Airlines | 77% | 25 min | 2.4% | 286 |
| Spirit Airlines | 68% | 24 min | 1.9% | 679 |
Monthly on-time trend
Best time to fly from SJU to FLL
Aim for departures around 6 a.m. (91% on-time); avoid 6 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 21 min |
| Tuesdaybest | 81% | 12 min |
| Wednesday | 81% | 15 min |
| Thursday | 74% | 19 min |
| Friday | 77% | 19 min |
| Saturday | 73% | 22 min |
| Sunday | 75% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft56%
- Airline operations32%
- National airspace system11%
- Weather1%
Frequently asked questions
- How often are flights from SJU to FLL delayed?
- 24% of SJU–FLL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from SJU to FLL?
- Southwest Airlines has the best on-time record on this route at 80%, based on 689 flights. 4 airlines flew SJU–FLL frequently enough to compare in this period.
- What is the best time of day to fly from SJU to FLL?
- Departures around 6 a.m. have the best record (91% on-time), while departures around 6 p.m. have the worst (52%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SJU to FLL?
- The scheduled SJU–FLL flight time averages 2h 49m over 1,046 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are SJU to FLL flights cancelled?
- 1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SJU to FLL?
- March 2026 was the roughest month in this dataset, with only 62% of arrivals on time. The best was May 2025 at 88%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 4,987 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.