UA3661 TorontoYYZ · 21:00 ChicagoORD · 22:05
UA3661 by United Airlines flies from Toronto (YYZ) to Chicago (ORD).
scheduled from YYZ
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by YYZ (Toronto), currently flying MVFR (marginal visual). 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 →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Toronto to Chicago flights today
same route · United AirlinesIf UA3661 is cancelled, these are the other United Airlines nonstop flights from Toronto to Chicago on the same day, with scheduled departure times in YYZ local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA3661 actually runs
Pro Flight Search has tracked every published board update for UA3661 across the YYZ and ORD boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed -16 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA3661 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: N743YX.
Board clocks recorded as YYZ and ORD published them.
Planning around UA3661? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA3661 Toronto to Chicago on-time performance, measured from the YYZ and ORD airport boards.
https://proflightsearch.com/flight/UA3661
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