TAP Air PortugalTP
live
Direct flights from Lisbon (LIS) to Washington (IAD): 14 nonstop departures observed each week across 2 airlines. 56% of the last 9 tracked flights arrived within 15 minutes of schedule. The median arrival is 5 minutes late. 2 of the 11 tracked flights were cancelled. The nonstop covers 5,766 km, an estimated 7 hours 54 minutes in the air. Measured by Pro Flight Search from live flight boards at Lisbon and Washington. Updated 15 November 2026 at 15:08 UTC.
Today, LIS → IAD
Sun 15 Nov · local timesChecked LIS board 15:08 · IAD board 10:18
LIS
Lisbon
heavy · +37
IAD
Washington
busy · +16
5,766 km · ~7h 54m est.
Runs rough · 2 airlines · 14x weekly · nonstop
56% on time
of the last 9 tracked LIS → IAD flights arrived within 15 minutes
Median arrival delay is +5 min. 2 of 11 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+5 minacross the last 7 arrivals
Flight time~7h 54mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled18.2%recent route rate · 2 of 11
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
TAP Air PortugalUnited 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 daysUnited AirlinesUA60% on time
Flights UA943 12:20 daily
History
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
Conditions are tightest at LIS and IAD: a 35% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +4 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 Lisbon to Washington route actually runs
Pro Flight Search records official board updates for nonstop LIS 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: Lisbon (LIS) to Washington (IAD) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/LIS-IAD
LIS to IAD questions
Is LIS–IAD running on time right now?
Some delays possible. The departure side at LIS is the weaker end, route health score 64/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on LIS–IAD?
Operators schedule morning departures around 11:25 from LIS. 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 LIS to IAD?
Great-circle distance is 5,766 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 437–524 min gate-to-gate on this route.
How often does LIS–IAD fly?
2 carriers operate this route, around 14 flights a week between them. Compare carrier days and times in the airline list above.
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