| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| May 05 | SFO | DEN | 13:23 | 16:59 |
En-Route
|
Track > |
United Airlines Flight UA8121 connects San Francisco, United States to Denver, United States, taking off from San Francisco International Airport SFO and landing at Denver International Airport DEN.
How long is the UA8121 flight from San Francisco to Denver?
The average flight time from San Francisco to Denver is 2 hours and 36 minutes. The flight distance is 1553 km / 965 miles and the average flight speed is 597 km/h / 371 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA8121 San Francisco to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA8121 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA8121 flight?
The latest flight took off on Tuesday, May 5th, 2026 with the flight status being En-Route on 16:59.
How else can the flight UA8121 be referenced as?
This United Airlines flight can also be referenced as UAL8121, UA 8121, UAL 8121.
How often is flight UA8121 delayed?
On average, 0% of all UA8121 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA8121 flight or baggage issues?
If your UA8121 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 UA8121 Flight Tracker above for more details.
Other flights departing from San Francisco SFO: 1L181, DL2277, DL502, UA8191
Other flights arriving at Denver DEN: WN2974, WN994, KG137, KG408
All flights connecting San Francisco SFO to Denver DEN.