UA166 TaipeiTPE · 11:00 HagåtñaGUM · 17:20
UA166 by United Airlines flies from Taipei (TPE) to Hagåtña (GUM).
scheduled from TPE
Where the minutes go
last 4 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
Early read, sample still buildingConditions at TPE and GUM 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How UA166 actually runs
Pro Flight Search has tracked every published board update for UA166 across the TPE and GUM boards: schedule changes, gate pushes and actual clocks. Usually departs ~13 min late. Based on 4 confirmed departures · 3/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA166 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: N37308, N17329, N27304, N17302.
Board clocks recorded as TPE and GUM published them.
Planning around UA166? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA166 Taipei to Hagåtña on-time performance, measured from the TPE and GUM airport boards.
https://proflightsearch.com/flight/UA166
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