United AirlinesUA100% on time
Flights UA2024 16:55 daily
live
Direct flights from San Juan (SJU) to Washington (IAD): 7 nonstop departures observed each week across 1 airline. 100% of the last 6 operated flights arrived within 15 minutes of schedule. The median arrival is 5 minutes early. No cancellations were recorded across the 6 tracked flights. The nonstop covers 2,534 km, an estimated 3 hours 45 minutes in the air. Measured by Pro Flight Search from live flight boards at San Juan and Washington. Updated 11 September 2026 at 14:33 UTC.
SJU
San Juan
smooth · +0
IAD
Washington
smooth · +0
2,534 km · ~3h 45m est.
Runs reliable · 1 airline · 7x weekly · nonstop
100% on time
of the last 6 operated SJU → IAD flights arrived within 15 minutes
Median arrival delay is −5 min. 0 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−5 minacross the last 6 operated legs
Flight time~3h 45mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes09-11LXJ275departed+0
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at SJU: 42% odds of a 15+ minute delay and around +15 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the San Juan to Washington route actually runs
Pro Flight Search records official board updates for nonstop SJU to IAD flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — San Juan (SJU) to Washington (IAD) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SJU-IAD
SJU to IAD questions
Is SJU–IAD running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SJU to IAD?
Great-circle distance is 2,534 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 209–247 min gate-to-gate on this route.
How often does SJU–IAD fly?
United Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at SJU and arrival-side delay at IAD, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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