| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 30 | SEA | ORD | 12:01 | 17:17 |
Delayed
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United Airlines Flight UA3855 connects Seattle, United States to Chicago, United States, taking off from Seattle Tacoma International Airport SEA and landing at Chicago O'Hare International Airport ORD.
How long is the UA3855 flight from Seattle to Chicago?
The average flight time from Seattle to Chicago is 3 hours and 16 minutes. The flight distance is 2762 km / 1716 miles and the average flight speed is 845 km/h / 525 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA3855 Seattle to Chicago?
The Airportia On-Time Performance Rating for United Airlines Flight UA3855 is 4/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA3855 arriving at?
Flight UA3855 arrives at Chicago O'Hare International Airport (ORD) Terminal 3.
When was the latest UA3855 flight?
The latest flight took off on Tuesday, June 30th, 2026 with the flight status being En-Route on 17:17.
How else can the flight UA3855 be referenced as?
This United Airlines flight can also be referenced as UAL3855, UA 3855, UAL 3855.
How often is flight UA3855 delayed?
On average, 100% of all UA3855 flights are delayed. The average delay is 59 minutes.
Can I get compensation for my delayed or cancelled UA3855 flight or baggage issues?
If your UA3855 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA3855 Flight Tracker above for more details.
Other flights departing from Seattle SEA: AS2230, AS9420, AS383, AS1556
Other flights arriving at Chicago ORD: AV408, UA5715, UA4726, AA9929
All flights connecting Seattle SEA to Chicago ORD.