San Juan (SJU) to Denver (DEN): On-Time Performance
Data through July 2026
San Juan (SJU) to Denver (DEN) is a thinner route than most in this dataset — 333 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 82% arrived on time.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 0.91
- last 12 months
- Duration
- 6h 35m
- scheduled
- Distance
- 2,733 mi
Monthly on-time trend
Best time to fly from SJU to DEN
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 12 min |
| Tuesday | 81% | 11 min |
| Wednesday | 82% | 16 min |
| Thursday | 84% | 7 min |
| Fridaybest | 85% | 10 min |
| Saturday | 79% | 10 min |
| Sunday | 81% | 8 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 operations16%
- National airspace system39%
- Weather1%
Frequently asked questions
- How often are flights from SJU to DEN delayed?
- 18% of SJU–DEN 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 11 minutes.
- How long is the flight from SJU to DEN?
- The scheduled SJU–DEN flight time averages 6h 35m over 2,733 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are SJU to DEN flights cancelled?
- 0.4% 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 DEN?
- August 2024 was the roughest month in this dataset, with only 50% of arrivals on time. The best was March 2026 at 100%. If your dates are flexible, that 50-point gap is worth planning around.
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Based on 670 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.