United AirlinesUA
Flights UA978 22:15 daily
live
Direct flights from Washington (IAD) to Edinburgh (EDI): 7 nonstop departures observed each week across 1 airline. The median arrival is 12 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 5,581 km, an estimated 7 hours 39 minutes in the air. Measured by Pro Flight Search from live flight boards at Washington and Edinburgh. Updated 9 September 2026 at 04:16 UTC.
IAD
Washington
busy · +15
EDI
Edinburgh
smooth · +6
5,581 km · ~7h 39m est.
Running clean · 1 airline · 7x weekly · nonstop
85 / 100
route health from live IAD and EDI delay boards
Median arrival delay is +12 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+12 minacross the last 1 operated legs
Flight time~7h 39mestimated 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 outcomesActual 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 EDI: 39% odds of a 15+ minute delay and around +7 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 Washington to Edinburgh route actually runs
Pro Flight Search records official board updates for nonstop IAD to EDI 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 — Washington (IAD) to Edinburgh (EDI) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/IAD-EDI
IAD to EDI questions
Is IAD–EDI running on time right now?
Smooth skies ahead. The departure side at IAD is the weaker end, route health score 85/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from IAD to EDI?
Great-circle distance is 5,581 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 424–508 min gate-to-gate on this route.
How often does IAD–EDI 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 IAD and arrival-side delay at EDI, 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.
.