| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 02 | SFO | SEA | 06:00 | 08:23 |
Delayed
|
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United Airlines Flight UA3921 connects San Francisco, United States to Seattle, United States, taking off from San Francisco International Airport SFO and landing at Seattle Tacoma International Airport SEA.
How many UA3921 flights are operated per week?
1 flight per week. The flight UA3921 is operated on Wednesday.
What is the On-Time Performance (OTP) of United Airlines Flight UA3921 San Francisco to Seattle?
The Airportia On-Time Performance Rating for United Airlines Flight UA3921 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA3921 flight?
The latest flight took off on Wednesday, September 2nd, 2026 with the flight status being Scheduled on 08:23.
How else can the flight UA3921 be referenced as?
This United Airlines flight can also be referenced as UAL3921, UA 3921, UAL 3921.
How often is flight UA3921 delayed?
On average, 0% of all UA3921 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA3921 flight or baggage issues?
If your UA3921 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 UA3921 Flight Tracker above for more details.
Other flights departing from San Francisco SFO: AS580, B6116, WS1501, UA419
Other flights arriving at Seattle SEA: AS582, OO3344, OO3137, AS360
All flights connecting San Francisco SFO to Seattle SEA.
