UA858 United Airlines - Flight Status

Which is the frequency of flight UA858?
The flight UA858 is scheduled to flight on daily basis.

Which is the distance of flight UA858?
The distance between the two airports is 9879 kilometers.

Which is the flight time of flight UA858?
The scheduled flight time gate to gate is: 11:15 hours.
The real flight time gate to gate on average is: 16:01 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Shanghai: 2025-10-16 03:51:57
Current Time in San Francisco: 2025-10-15 12:51:57

The following airline serve the same route between Shanghai and San Francisco:
China Eastern Airlines - Flight Number: MU589. (On Time performance: 49 - Average Delay: 39 minutes)

We have gathered data from recent months and present below an analysis of how timely the flights have been.

Delays analyzed by Weekday: We have gathered available data from last six months, spanning from April 09, 2025 to October 08, 2025. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from October 02, 2024 to September 30, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.