United AirlinesUA79% on time
Flights UA1734 05:30 daily · UA2098 09:30 daily · UA721 14:40 daily · UA1783 18:00 Su
live
Direct flights from Boston (BOS) to Washington (IAD): 29 nonstop departures observed each week across 1 airline. 71% of the last 21 tracked flights arrived within 15 minutes of schedule. The median arrival is 8 minutes early. No cancellations were recorded across the 23 tracked flights. The nonstop covers 664 km, an estimated 1 hour 21 minutes in the air. Measured by Pro Flight Search from live flight boards at Boston and Washington. Updated 13 November 2026 at 05:08 UTC.
Today, BOS → IAD
Fri 13 Nov · local timesChecked BOS board 00:08 · IAD board 22:01
BOS
Boston
disrupted · +123
IAD
Washington
smooth · +8
664 km · ~1h 21m est.
Runs mixed · 1 airline · 29x weekly · nonstop
71% on time
of the last 21 tracked BOS → IAD flights arrived within 15 minutes
Median arrival delay is −8 min. 0 of 23 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−8 minacross the last 21 arrivals
Flight time~1h 21mestimated from route distance
Weekly departures29x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 23
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 outcomes11-111I352arrived+30
11-081I487arrived+109
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
Conditions are tightest at BOS: a 45% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +16 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
How the Boston to Washington route actually runs
Pro Flight Search records official board updates for nonstop BOS 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: Boston (BOS) to Washington (IAD) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/BOS-IAD
BOS to IAD questions
Is BOS–IAD running on time right now?
Significant delay risk. The departure side at BOS is the weaker end, route health score 44/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on BOS–IAD?
Operators schedule morning departures around 05:30 and evening departures around 18:00 from BOS. Earlier flights typically land before destination-airport delays accumulate later in the day; check the IAD delay card to confirm conditions when you'd arrive.
How long is the flight from BOS to IAD?
Great-circle distance is 664 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 77–87 min gate-to-gate on this route.
How often does BOS–IAD fly?
United Airlines runs the route with about 29 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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