UA8104United Airlines · ORD → SNA
live · 16m ago
Route confirmed United Airlines

UA8104 ChicagoORD · 09:00 Santa AnaSNA

UA8104 by United Airlines flies from Chicago (ORD) to Santa Ana (SNA) for the Mon, Sep 21 departure.

Right nowEn route to Santa Ana · off blocks 09:33 · 33 min late
En route

en route from ORD to SNA

En routeUA8104 · position estimated
ORDChicagoSNASanta Ana
Estimated from the boards

Board estimate · gate and arrival times. Off blocks 09:33 · typical taxi-out at ORD ≈ 7.6 min. No receiver coverage over open ocean.

Typical gate push+54 minmedian posted departure

The route today

live boards
ORDChicagoOn-time likelyORD delay board →
SNASanta AnaOn-time likelySNA delay board →
ORD→SNAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
47%Chance of 15+ min delay
0.9%Chance of cancellation
+24 minAvg hub delay right now

Driven mainly by ORD (Chicago), currently flying MVFR (marginal visual). For this route and airline, 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 →

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 Chicago to Santa Ana flights today

same route · United Airlines
UA2666departs 05:00
UA1304departs 09:00
UA8169departs 09:43
UA8130departs 12:20
UA8204departs 12:47
UA2240departs 16:10

If UA8104 is cancelled, these are the other United Airlines nonstop flights from Chicago to Santa Ana on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA8104 actually runs

Pro Flight Search has tracked every published board update for UA8104 across the ORD and SNA boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +54 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA8104 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
09-21ORD 09:00 09:33 (+33)SNA
09-15ORD 09:00 09:54 (+54)SNA

Board clocks recorded as ORD and SNA published them.

Planning around UA8104? 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 — UA8104 Chicago to Santa Ana on-time performance, measured from the ORD and SNA airport boards.

Canonical URL
https://proflightsearch.com/flight/UA8104
How we measure this →