UA1641United Airlines · SDF → DEN
live · 11m ago
Route confirmed United Airlines

UA1641 LouisvilleSDF DenverDEN

UA1641 by United Airlines flies from Louisville (SDF) to Denver (DEN).

Right nowNext departure tomorrow Operates daily
08:00

scheduled from SDF

The route today

live boards
SDFLouisvilleOn-time likelySDF delay board →
DENDenverOn-time likelyDEN delay board →
SDF→DENevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
36%Chance of 15+ min delay
1.5%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at SDF and DEN 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 Louisville

Forecast

Thu 5 Nov, local date

High19°Clikely 17°C to 20°C
Low11°Clikely 9°C to 13°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.

Tomorrow at Denver

Forecast

Thu 5 Nov, local date

High14°Clikely 12°C to 16°C
Low1°Clikely 0°C to 3°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 Louisville to Denver flights today

same route · United Airlines
UA3767departs 02:00
UA405departs 08:00
UA1510departs 15:24

If UA1641 is cancelled, these are the other United Airlines nonstop flights from Louisville to Denver on the same day, with scheduled departure times in SDF 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 UA1641 actually runs

Pro Flight Search has tracked every published board update for UA1641 across the SDF and DEN boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at SDF and DEN.

The verdict above is that record speaking, so it reflects how UA1641 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA1641? 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: UA1641 Louisville to Denver on-time performance, measured from the SDF and DEN airport boards.

Canonical URL
https://proflightsearch.com/flight/UA1641
How we measure this →