UA1232United Airlines · DEN → BOS
live · 47m ago
Route confirmed United Airlines

UA1232 DenverDEN · 09:51 BostonBOS · 15:56

UA1232 by United Airlines flies from Denver (DEN) to Boston (BOS) for the Wed, Sep 23 departure.

Right nowOn time · gate B18 · as of 00:38
09:51

departs DEN · on schedule

Typical gate push+13 minmedian posted departure
Typical arrival+5 minmedian over 3 operations
Wins back in air~8 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
09-23
+5 arrival
09-22
+13 gate · +5 arrival
09-21
−3 gate · −24 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
DENDenverOn-time likelyDEN delay board →
BOSBostonModerate riskBOS delay board →
DEN→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
44%Chance of 15+ min delay
2.9%Chance of cancellation
+10 minAvg hub delay right now

Conditions at DEN and BOS 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 Denver to Boston flights today

same route · United Airlines
UA558departs 07:45
UA597departs 13:50
UA1912departs 16:00
UA731departs 17:47
UA2656departs 23:59

If UA1232 is cancelled, these are the other United Airlines nonstop flights from Denver to Boston on the same day, with scheduled departure times in DEN local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA1232 actually runs

Pro Flight Search has tracked every published board update for UA1232 across the DEN and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed +5 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA1232 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
09-23DEN 09:51BOS 15:56 16:01 (+5)
09-22DEN 09:51 10:04 (+13)BOS 15:56 16:01 (+5)
09-21DEN 09:51 09:48 (−3)BOS 15:56 15:32 (−24)

Aircraft

Recent tails: N14554, N54558.

Board clocks recorded as DEN and BOS published them.

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 — UA1232 Denver to Boston on-time performance, measured from the DEN and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1232
How we measure this →