IAD → LISWashington to Lisbon

live

Direct flights from Washington (IAD) to Lisbon (LIS): 14 nonstop departures observed each week across 2 airlines. 89% of the last 9 operated flights arrived within 15 minutes of schedule. The median arrival is 5 minutes early. No cancellations were recorded across the 9 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 14 September 2026 at 05:54 UTC.

IAD Washington disrupted · +79
LIS Lisbon smooth · +0
5,766 km · ~7h 54m est.
dep bank 17:05–22:3514x weekly
Runs reliable · 2 airlines · 14x weekly · nonstop
89% on time

of the last 9 operated IAD → LIS flights arrived within 15 minutes

Median arrival delay is −5 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−5 minacross the last 9 operated legs
Flight time~7h 54mestimated from route distance
Weekly departures14x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
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 days
TAP Air PortugalTP100% on time

Flights TP232 varies daily · TP234 22:35 daily

United AirlinesUA

Flights UA942 22:25 daily

History

operated legs · board outcomes
09-13TP232dep +37 → arr+2
09-13TP234dep +14 → arr−15
09-13UA942dep +30 → arr−5
09-12TP232dep +1 → arr−41
09-12TP234dep +6 → arr+10
09-12UA942dep +55 → arr+28
09-11TP232dep +7 → arr−4
09-11TP234dep +24 → arr−53
09-11UA942dep +33 → arr−22

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
IADWashington +79 min disrupted 🌤 mostly cloudy · N 0 kt Full IAD delay board →
LISLisbon +0 min smooth 🌤 clear · E 4 kt Full LIS delay board →

Weather lens

Current conditions put the pressure at 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 →

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
https://proflightsearch.com/search-flights/IAD-LIS
How we measure this →

IAD to LIS questions

Is IAD–LIS running on time right now?

Significant delay risk. The departure side at IAD is the weaker end, route health score 50/100. 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.