Washington (DCA) to San Juan (SJU): On-Time Performance
Data through July 2026
Washington (DCA) to San Juan (SJU) is a thinner route than most in this dataset — 364 departures over the past year, roughly 7 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 76% arrived on time.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 1.00
- last 12 months
- Duration
- 3h 49m
- scheduled
- Distance
- 1,554 mi
Monthly on-time trend
Best time to fly from DCA to SJU
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 17 min |
| Tuesdaybest | 81% | 22 min |
| Wednesday | 78% | 22 min |
| Thursday | 67% | 15 min |
| Friday | 72% | 20 min |
| Saturday | 77% | 17 min |
| Sunday | 75% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft13%
- Airline operations39%
- National airspace system38%
- Weather10%
Frequently asked questions
- How often are flights from DCA to SJU delayed?
- 24% of DCA–SJU 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 19 minutes.
- How long is the flight from DCA to SJU?
- The scheduled DCA–SJU flight time averages 3h 49m over 1,554 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are DCA to SJU 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 DCA to SJU?
- June 2026 was the roughest month in this dataset, with only 57% of arrivals on time. The best was May 2025 at 97%. If your dates are flexible, that 40-point gap is worth planning around.
Explore related pages
More routes from DCA
Other ways to fly to San Juan (SJU)
Related guides
Based on 760 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.