UA3902United Airlines · SAN → ORD
live · 2m ago
Route confirmed United Airlines

UA3902 San DiegoSAN ChicagoORD

UA3902 by United Airlines flies from San Diego (SAN) to Chicago (ORD).

Right nowNext departure today Operates daily
17:30

scheduled from SAN

The route today

live boards
SANSan DiegoOn-time likelySAN delay board →
ORDChicagoHigh riskORD delay board →
SAN→ORDevery 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
1.9%Chance of cancellation
+16 minTypical airport delay in this weather

Driven mainly by ORD (Chicago), currently flying MVFR (marginal visual). 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 SAN

Forecast

Thu 5 Nov, local date

High24°Clikely 23°C to 26°C
Low15°Clikely 14°C to 17°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

Thu 5 Nov, local date

High12°Clikely 10°C to 14°C
Low10°Clikely 7°C to 12°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 San Diego to Chicago flights today

same route · United Airlines
UA2343departs 06:50
UA1710departs 10:40
UA3776departs 11:00
UA1779departs 14:08
UA2486departs 16:35
UA540departs 22:30

If UA3902 is cancelled, these are the other United Airlines nonstop flights from San Diego to Chicago on the same day, with scheduled departure times in SAN 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 UA3902 actually runs

Pro Flight Search has tracked every published board update for UA3902 across the SAN 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 SAN and ORD.

The verdict above is that record speaking, so it reflects how UA3902 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3902? 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: UA3902 San Diego to Chicago on-time performance, measured from the SAN and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3902
How we measure this →