TP232TAP AIR PORTUGALIn the air, 46 min late
Left IAD at 18:31, 46 min after its 17:45 slot.
- Landing
- 06:00LIS board estimate · sched 06:10
live
Direct flights from Washington (IAD) to Lisbon (LIS): 14 nonstop departures observed each week across 2 airlines. 100% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 28 minutes early. No cancellations were recorded across the 7 tracked flights. 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 Washington and Lisbon. Updated 23 October 2026 at 03:08 UTC.
Today, IAD → LIS
Thu 22 Oct · local times- 17:45 TP232TAP AIR PORTUGAL Left 18:31 +46 LIS est. 06:00In the air · sched 06:10
- 22:25 UA942UNITED AIRLINES Est. 22:25Departure not confirmed by the board LIS est. 10:35 +5sched 10:30
- 22:35 TP234TAP AIR PORTUGAL Est. 22:35Departure not confirmed by the board LIS est. 10:25sched 10:55
Checked IAD board 22:18 · LIS board 04:08
IAD
Washington
busy · +15
LIS
Lisbon
smooth · +8
5,766 km · ~7h 54m est.
Runs reliable · 2 airlines · 14x weekly · nonstop
100% on time
of the last 7 operated IAD → LIS flights arrived within 15 minutes
Median arrival delay is −28 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−28 minacross the last 7 operated legs
Flight time~7h 54mestimated from route distance
Weekly departures14x2 direct airlines on the leg
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 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 IAD and LIS: 37% odds of a 15+ minute delay and around +4 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 Lisbon route actually runs
Pro Flight Search records official board updates for nonstop IAD to LIS 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 Lisbon (LIS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/IAD-LIS
IAD to LIS questions
Is IAD–LIS running on time right now?
Smooth skies ahead. The departure side at IAD is the weaker end, route health score 84/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on IAD–LIS?
Operators schedule evening departures around 22:25 from IAD. Earlier flights typically land before destination-airport delays accumulate later in the day; check the LIS delay card to confirm conditions when you'd arrive.
How long is the flight from IAD to LIS?
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 IAD–LIS fly?
2 carriers operate this route, around 21 flights a week between them. Compare carrier days and times in the airline list above.
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