DCA to SJU flight delays & on-time performance
Nonstop flights from Ronald Reagan Washington National Airport to Luis Munoz Marin International Airport · 1,554 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DCA or SJU right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (DCA) to San Juan (SJU) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.6% were cancelled, and 10% arrived an hour or more late.
- JetBlue is the only airline reporting nonstop flights on this route.
- Monday was the most reliable day to fly (82% on time) and Friday the least (62%).
- The largest source of delay minutes was air traffic control & airport congestion (42%).
Which airline is most on time from DCA to SJU?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| JetBlue | 73% | 1.6% | 20 min | 9.9% | 364 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
Not enough departures across different hours to compare.
Best day of the week
On-time arrival rate by day of departure.
- Monday82%1.9% cancelled
- Tuesday73%1.9% cancelled
- Wednesday78%0.0% cancelled
- Thursday72%0.0% cancelled
- Friday62%0.0% cancelled
- Saturday78%3.8% cancelled
- Sunday69%3.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion42%
- Airline (crew, maintenance, cleaning, fueling)33%
- Extreme weather14%
- Late-arriving aircraft10%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)33%
- Extreme weather33%
- Air traffic control & airport congestion33%
- Security0%
DCA to SJU: common questions
- How often are DCA to SJU flights on time?
- 73% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Washington to San Juan cancelled?
- 1.6% of scheduled flights were cancelled (6 of 364).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 74 min behind schedule on average, and 9.9% of flights were an hour or more late.
- How long is taxi time at DCA?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SJU to DCA — 71% on time
More flights from Washington
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DCA → SJU, nonstop flights by US airlines that report to the DOT. How we calculate this.