| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 14 | SFO | MCI | 16:24 | 21:25 |
Landed
|
Track > |
| Dec 07 | SFO | MCI | 16:24 | 21:13 |
Landed
|
Track > |
United Airlines Flight UA521 connects San Francisco, United States to Kansas City, United States, taking off from San Francisco International Airport SFO and landing at Kansas City International Airport MCI.
How long is the UA521 flight from San Francisco to Kansas City?
The average flight time from San Francisco to Kansas City is 2 hours and 55 minutes. The flight distance is 2406 km / 1495 miles and the average flight speed is 826 km/h / 513 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA521 San Francisco to Kansas City?
The Airportia On-Time Performance Rating for United Airlines Flight UA521 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA521 arriving at?
Flight UA521 arrives at Kansas City International Airport (MCI) Terminal 1.
When was the latest UA521 flight?
The latest flight took off on Monday, December 15th, 2025 with the flight status being Landed on 21:25.
How else can the flight UA521 be referenced as?
This United Airlines flight can also be referenced as UAL521, UA0521, UA 521, UAL 521.
How often is flight UA521 delayed?
On average, 0% of all UA521 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA521 flight or baggage issues?
If your UA521 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 UA521 Flight Tracker above for more details.
Flight UA521 is code-shared by 2 airlines using the flight numbers EK6368, NZ9503
Other flights departing from San Francisco SFO: UA574, UA2623, UA217, UA1053
Other flights arriving at Kansas City MCI: AA5251, WN1498, WN4466, WN1414
All flights connecting San Francisco SFO to Kansas City MCI.