UA2104 BostonBOS · 12:41 New YorkEWR · 14:08
UA2104 by United Airlines flies from Boston (BOS) to New York (EWR) for the Mon, Sep 7 departure.
arrived at EWR · 8 min late
Where the minutes go
last 6 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival +8 min · 0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at BOS and EWR 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.
Other Boston to New York flights today
same route · United AirlinesIf UA2104 is cancelled, these are the other United Airlines nonstop flights from Boston to New York on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA2104 actually runs
Pro Flight Search has tracked every published board update for UA2104 across the BOS and EWR boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min late. Based on 6 confirmed landings · 4/6 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how UA2104 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as BOS and EWR published them.
Planning around UA2104? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — UA2104 Boston to New York on-time performance, measured from the BOS and EWR airport boards.
https://proflightsearch.com/flight/UA2104
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