UA3937United Airlines · SJC → ORD
live · 7m ago
Route confirmed United Airlines

UA3937 San JoseSJC ChicagoORD

UA3937 by United Airlines flies from San Jose (SJC) to Chicago (ORD).

Right nowNext departure tomorrow Operates daily
08:00

scheduled from SJC

The route today

live boards
SJCSan JoseOn-time likelySJC delay board →
ORDChicagoOn-time likelyORD delay board →
SJC→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
43%Chance of 15+ min delay
1.3%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at SJC 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 on this route

Forecast

San Jose to Chicago with United Airlines · Fri 30 Oct, local date

Outlook: about usual
Chance a departure leaves 60+ min late
5.0%1.0× usual

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 2 departures a day on this route with this airline. · 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 Jose to Chicago flights today

same route · United Airlines
UA1239departs 06:30
UA2740departs 06:30
UA1650departs 14:08
UA2004departs 14:14

If UA3937 is cancelled, these are the other United Airlines nonstop flights from San Jose to Chicago on the same day, with scheduled departure times in SJC 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 UA3937 actually runs

Pro Flight Search has tracked every published board update for UA3937 across the SJC and ORD boards: schedule changes, gate pushes and actual clocks. Combined risk score: 10.0/100. Based on airport operations, weather, and cached board history at SJC and ORD.

The verdict above is that record speaking, so it reflects how UA3937 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3937? 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: UA3937 San Jose to Chicago on-time performance, measured from the SJC and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3937
How we measure this →