UA8218United Airlines · SEA → ORD
live · 23m ago
Route confirmed United Airlines

UA8218 SeattleSEA ChicagoORD

UA8218 by United Airlines flies from Seattle (SEA) to Chicago (ORD).

Right nowNext departure today Operates daily
10:05

scheduled from SEA

The route today

live boards
SEASeattleOn-time likelySEA delay board →
ORDChicagoOn-time likelyORD delay board →
SEA→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
38%Chance of 15+ min delay
1.6%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at SEA 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

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

Outlook: about usual
Chance a departure is cancelled
0.5%1.1× usual
Chance a departure leaves 60+ min late
15%0.9× usual

Forecast weather: 82% chance of rain at Seattle

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · Fewer than one departure a day on this route with this airline, so read it as a rough guide. · 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 Seattle to Chicago flights today

same route · United Airlines
UA2618departs 07:00
UA2835departs 10:42
UA747departs 10:50
UA2369departs 13:56
UA2340departs 14:30
UA1265departs 17:07

If UA8218 is cancelled, these are the other United Airlines nonstop flights from Seattle to Chicago on the same day, with scheduled departure times in SEA 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 UA8218 actually runs

Pro Flight Search has tracked every published board update for UA8218 across the SEA 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 SEA and ORD.

The verdict above is that record speaking, so it reflects how UA8218 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA8218? 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: UA8218 Seattle to Chicago on-time performance, measured from the SEA and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA8218
How we measure this →