| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 07 | PDX | BFI | 13:28 | 14:04 |
Delayed
|
Track > |
United Airlines Flight UA3821 connects Portland, United States to Seattle, United States, taking off from Portland International Airport PDX and landing at Seattle Boeing Field BFI.
How long is the UA3821 flight from Portland to Seattle?
The average flight time from Portland to Seattle is 36 minutes. The flight distance is 217 km / 135 miles and the average flight speed is 362 km/h / 225 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA3821 Portland to Seattle?
The Airportia On-Time Performance Rating for United Airlines Flight UA3821 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA3821 flight?
The latest flight took off on Tuesday, July 7th, 2026 with the flight status being En-Route on 14:04.
How else can the flight UA3821 be referenced as?
This United Airlines flight can also be referenced as UAL3821, UA 3821, UAL 3821.
How often is flight UA3821 delayed?
On average, 100% of all UA3821 flights are delayed. The average delay is 19 minutes.
Can I get compensation for my delayed or cancelled UA3821 flight or baggage issues?
If your UA3821 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 UA3821 Flight Tracker above for more details.
Other flights departing from Portland PDX: UA1411, UA1927, KL616, WN3563
Other flights arriving at Seattle BFI: JL329, M52020, M53333, M52020
All flights connecting Portland PDX to Seattle BFI.