UA1639United Airlines · DEN → STL
live · 27m ago
Route confirmed United Airlines

UA1639 DenverDEN · 13:55 St LouisSTL · 16:57

UA1639 by United Airlines flies from Denver (DEN) to St Louis (STL) for the Sat, Nov 14 departure.

Right nowOn time · gate B17 · as of 13:08
13:55

departs DEN · on schedule

Typical gate push−3 minmedian posted departure
Typical arrival−12 minmedian over 3 operations
Wins back in air~9 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 5 operations · gate push → arrival
0+30+60+90 min
11-13
CANCELLED
11-12
−7 gate · −9 arrival
11-11
−4 gate · −12 arrival
11-10
−3 gate · −15 arrival
11-09
+27 gate

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 −12 min · 1 cancelled · 5 operations tracked

The route today

live boards
DENDenverHigh riskDEN delay board →
STLSt LouisHigh riskSTL delay board →
DEN→STLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
1.3%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at DEN and STL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →

Tomorrow at Denver

Forecast

Sun 15 Nov, local date

High13°Clikely 11°C to 15°C
Low2°Clikely 0°C to 4°C
  • 38% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at St Louis

Forecast

Sun 15 Nov, local date

High11°Clikely 9°C to 12°C
Low−1°Clikely −2°C to 0°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

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 St Louis flights today

same route · United Airlines
UA652departs 09:35
UA1422departs 17:52

If UA1639 is cancelled, these are the other United Airlines nonstop flights from Denver to St Louis on the same day, with scheduled departure times in DEN local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA1639 actually runs

Pro Flight Search has tracked every published board update for UA1639 across the DEN and STL boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min early. Based on 3 confirmed landings · 3/3 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how UA1639 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
11-13CANCELLED
11-12DEN 13:55 13:48 (−7)STL 16:57 16:48 (−9)
11-11DEN 13:55 13:51 (−4)STL 16:57 16:45 (−12)
11-10DEN 13:55 13:52 (−3)STL 16:57 16:42 (−15)
11-09DEN 13:55 14:22 (+27)STL

Aircraft

Recent tails: N804UA, N842UA, N467UA, N820UA.

Board clocks recorded as DEN and STL published them.

Planning around UA1639? 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: UA1639 Denver to St Louis on-time performance, measured from the DEN and STL airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1639
How we measure this →