UA646 United Airlines - Flight Status

Which is the frequency of flight UA646?
The flight UA646 is scheduled to flight on daily basis.

Which is the distance of flight UA646?
The distance between the two airports is 599 miles.

Which is the flight time of flight UA646?
The scheduled flight time gate to gate is: 02:03 hours.
The real flight time gate to gate on average is: 01:56 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 Salt Lake City: 2025-10-31 06:47:52
Current Time in San Francisco: 2025-10-31 05:47:52

The following airlines serves the same route between Salt Lake City and San Francisco:

Delta Air Lines
- Flight Number: DL1088. (On Time performance: 79 - Average Delay: 19 minutes)
- Flight Number: DL1091. (On Time performance: 74 - Average Delay: 9 minutes)
- Flight Number: DL2762. (On Time performance: 68 - Average Delay: 16 minutes)
- Flight Number: DL902. (On Time performance: 71 - Average Delay: 11 minutes)
- Flight Number: DL920. (On Time performance: 74 - Average Delay: 11 minutes)

Frontier Airlines
- Flight Number: F93393. (On Time performance: 58 - Average Delay: 34 minutes)

United Airlines
- Flight Number: UA1515. (On Time performance: 85 - Average Delay: 16 minutes)
- Flight Number: UA2166. (On Time performance: 79 - Average Delay: 11 minutes)
- Flight Number: UA5457. (On Time performance: 72 - Average Delay: 20 minutes)
- Flight Number: UA5732.
- Flight Number: UA5736. (On Time performance: 87 - Average Delay: 16 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 August 19, 2025 to October 23, 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 March 06, 2025 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.