UA3477United Airlines · SDF → ORD
updated 1h ago
Route confirmed United Airlines

UA3477 LouisvilleSDF ChicagoORD

UA3477 by United Airlines flies from Louisville (SDF) to Chicago (ORD).

Right nowNext departure today Operates daily
06:59

scheduled from SDF

The route today

live boards
SDFLouisvilleOn-time likelySDF delay board →
ORDChicagoHigh riskORD delay board →
SDF→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
37%Chance of 15+ min delay
1.3%Chance of cancellation
+5 minTypical airport delay in this weather

Conditions at SDF and ORD 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

Fri 13 Nov, local date

High8°Clikely 6°C to 10°C
Low4°Clikely 2°C to 7°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 Chicago

Forecast

Fri 13 Nov, local date

High6°Clikely 4°C to 8°C
Low2°Clikely 0°C to 4°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 Chicago flights today

same route · United Airlines
UA3498departs 05:10
UA3635departs 07:00
UA4622departs 07:21
UA3674departs 09:02
UA3520departs 10:27
UA5471departs 14:10

If UA3477 is cancelled, these are the other United Airlines nonstop flights from Louisville to Chicago 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 UA3477 actually runs

Pro Flight Search has tracked every published board update for UA3477 across the SDF and ORD 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 ORD.

The verdict above is that record speaking, so it reflects how UA3477 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3477? 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: UA3477 Louisville to Chicago on-time performance, measured from the SDF and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3477
How we measure this →