San Juan (SJU) to Dallas/Fort Worth (DFW): On-Time Performance
Data through July 2026
The calendar drives reliability on SJU–DFW. June 2025 flights landed on schedule 90% of the time, but January 2026 dropped to 57% — a gap of 33 points. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (82% vs 74%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 2.7
- last 12 months
- Duration
- 5h 27m
- scheduled
- Distance
- 2,165 mi
Best airline from SJU to DFW
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 82% | 15 min | 1.8% | 607 |
| American Airlines | 77% | 17 min | 1.1% | 1,353 |
| Frontier Airlines | 58% | 25 min | 5.3% | 131 |
Monthly on-time trend
Best time to fly from SJU to DFW
Aim for departures around 1 a.m. (92% on-time); avoid 4 p.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 18 min |
| Tuesday | 78% | 13 min |
| Wednesday | 74% | 30 min |
| Thursday | 81% | 14 min |
| Fridaybest | 82% | 14 min |
| Saturday | 74% | 19 min |
| Sunday | 78% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations35%
- National airspace system18%
- Weather4%
Frequently asked questions
- How often are flights from SJU to DFW delayed?
- 22% of SJU–DFW 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 17 minutes.
- Which airline is most reliable from SJU to DFW?
- Spirit Airlines has the best on-time record on this route at 82%, based on 607 flights. 3 airlines flew SJU–DFW frequently enough to compare in this period.
- What is the best time of day to fly from SJU to DFW?
- Departures around 1 a.m. have the best record (92% on-time), while departures around 4 p.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SJU to DFW?
- The scheduled SJU–DFW flight time averages 5h 27m over 2,165 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are SJU to DFW flights cancelled?
- 1.6% 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 DFW?
- January 2026 was the roughest month in this dataset, with only 57% of arrivals on time. The best was June 2025 at 90%. If your dates are flexible, that 33-point gap is worth planning around.
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Based on 2,091 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.