UA4078United Airlines · IAD → ROC
live · 24m ago
Route confirmed United Airlines

UA4078 WashingtonIAD · 22:20 RochesterROC · 23:44

UA4078 by United Airlines flies from Washington (IAD) to Rochester (ROC) for the Wed, Sep 16 departure.

Right nowExpected in Rochester · On Time
23:44

arrival expected at ROC · on schedule

Typical arrival−4 minmedian over 2 operations

The route today

live boards
IADWashingtonOn-time likelyIAD delay board →
ROCRochesterHigh riskROC delay board →
IAD→ROCevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
5.2%Chance of cancellation
+9 minAvg hub delay right now

Conditions at IAD and ROC 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 →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Washington to Rochester flights today

same route · United Airlines
UA6130departs 08:17
UA6200departs 08:25
UA4564departs 12:45
UA4823departs 12:45
UA6146departs 12:45
UA4322departs 17:20

If UA4078 is cancelled, these are the other United Airlines nonstop flights from Washington to Rochester 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 UA4078 actually runs

Pro Flight Search has tracked every published board update for UA4078 across the IAD and ROC boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed -4 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA4078 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
09-15IAD 22:20ROC 23:44 23:30 (−14)
09-14IAD 22:20ROC 23:44 23:40 (−4)

Board clocks recorded as IAD and ROC published them.

Planning around UA4078? 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 — UA4078 Washington to Rochester on-time performance, measured from the IAD and ROC airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4078
How we measure this →