Flights Washington → San Juan
IAD → SJU
How long is the flight from Washington to San Juan?
The flight from Washington (IAD) to San Juan (SJU) takes 3h 28m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Washington to San Juan operates with a high level of punctuality, achieving an on-time performance rate of 84%. Over the course of the year, it has recorded a mean delay of 14.6 minutes per flight across a total of 192 flights, using Boeing 737-900 and Boeing 737-800 aircraft models. The destination airport sees over ten million passengers annually, highlighting its significance as a major travel hub.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Washington (IAD) → San Juan (SJU) route is operated by United Airlines. Across 430 flights monitored in recent months, 85% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 0.70%. FlightGuard's average computed risk is 14.7/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Juan the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Washington the average ATFM delay is 5.5 minutes.
Heading to San Juan: what to expect in this direction
Flying from Washington (IAD) to San Juan (SJU) heads south-east for about 2,534 km, a flight time of roughly 3h 28m.
Departures from Washington on this leg cluster in the overnight window: about 49% of IAD-SJU flights take off then.
Air-traffic congestion: departing Washington the average ATFM delay is 5.5 min (atfm); arriving into San Juan it is 2.0 min (atfm).
Across 430 tracked IAD-SJU flights, 85% left on time with an average delay of 11 min and a 0.7% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 83% | 5 min | 1.3% |
Airlines operating IAD-SJU
Airports
Frequently asked questions about IAD-SJU
The flight from Washington (IAD) to San Juan (SJU) takes 3h 28m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Washington (IAD) -> San Juan (SJU) route, on-time performance is 85% with an average delay of 11 minutes, based on 430 tracked flights.
The cancellation rate on Washington-San Juan is 0.70% across 430 monitored flights.
The route is operated by 1 airline: United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at San Juan, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
