TP234 WashingtonIAD · 23:30 LisbonLIS · 10:40
TP234 by TAP Air Portugal flies from Washington (IAD) to Lisbon (LIS).
scheduled from IAD
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at IAD and LIS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
Tomorrow on this route
ForecastWashington to Lisbon with TAP Air Portugal · Wed 28 Oct, local date
- Chance a departure is cancelled
- 0.4%0.5× usual
- Chance a departure leaves 60+ min late
- 4.8%0.5× usual
Forecast weather: 28% chance of fog at Washington
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 2 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Washington to Lisbon flights today
same route · TAP Air PortugalIf TP234 is cancelled, this is the other TAP Air Portugal nonstop flight from Washington to Lisbon on the same day, with scheduled departure times in IAD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How TP234 actually runs
Pro Flight Search has tracked every published board update for TP234 across the IAD and LIS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -4 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how TP234 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: CS-TXM, CS-TXB, CS-TXK.
Board clocks recorded as IAD and LIS published them.
Planning around TP234? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — TP234 Washington to Lisbon on-time performance, measured from the IAD and LIS airport boards.
https://proflightsearch.com/flight/TP234
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