UA4643United Airlines · BIL → DEN
live · 40m ago
Route confirmed United Airlines

UA4643 BillingsBIL · 17:55 DenverDEN · 19:45

UA4643 by United Airlines flies from Billings (BIL) to Denver (DEN) for the Mon, Oct 26 departure.

Right nowExpected in Denver · On time
19:45

arrival expected at DEN · on schedule

Typical arrival+5 minmedian over 7 operations

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-25
+5 arrival
10-24
+50 arrival
10-23
+29 arrival
10-22
+7 arrival
10-21
−12 arrival
10-20
−12 arrival
10-19
−11 arrival

The 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 operation

median arrival +5 min · 0 cancelled · 7 operations tracked

The route today

live boards
BILBillingsHigh riskBIL delay board →
DENDenverOn-time likelyDEN delay board →
BIL→DENevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
49%Chance of 15+ min delay
7.2%Chance of cancellation
+28 minAvg hub delay right now

Driven mainly by DEN (Denver), currently flying LIFR (low instrument). 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 Billings to Denver flights today

same route · United Airlines
UA5829departs 05:00
UA372departs 07:00
UA4654departs 10:30
UA5463departs 10:30
UA478departs 14:28
UA4637departs 16:00

If UA4643 is cancelled, these are the other United Airlines nonstop flights from Billings to Denver on the same day, with scheduled departure times in BIL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA4643 actually runs

Pro Flight Search has tracked every published board update for UA4643 across the BIL and DEN boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 7 confirmed landings · 5/7 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how UA4643 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
10-25BIL 17:55DEN 19:42 19:47 (+5)
10-24BIL 17:57DEN 19:53 20:43 (+50)
10-23BIL 17:57DEN 19:53 20:22 (+29)
10-22BIL 17:57DEN 19:53 20:00 (+7)
10-21BIL 17:57DEN 19:53 19:41 (−12)
10-20BIL 17:57DEN 19:53 19:41 (−12)
10-19BIL 17:57DEN 19:53 19:42 (−11)

Aircraft

Recent tails: N751EV, N85370, N702SY, N705SY.

Board clocks recorded as BIL and DEN published them.

Planning around UA4643? 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 — UA4643 Billings to Denver on-time performance, measured from the BIL and DEN airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4643
How we measure this →