UA636 United Airlines - Flight Status

Which is the frequency of flight UA636?
The flight UA636 is scheduled to flight on daily basis.

Which is the distance of flight UA636?
The distance between the two airports is 1843 miles.

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 Chicago: 2025-12-11 09:53:58
Current Time in San Francisco: 2025-12-11 07:53:58

The following airlines serves the same route between Chicago and San Francisco:

American Airlines
- Flight Number: AA1253. (On Time performance: 75 - Average Delay: 27 minutes)
- Flight Number: AA2113. (On Time performance: 69 - Average Delay: 29 minutes)
- Flight Number: AA2418. (On Time performance: 70 - Average Delay: 65 minutes)
- Flight Number: AA3048.

United Airlines
- Flight Number: UA1406. (On Time performance: 93 - Average Delay: 16 minutes)
- Flight Number: UA1498. (On Time performance: 72 - Average Delay: 25 minutes)
- Flight Number: UA1577. (On Time performance: 73 - Average Delay: 29 minutes)
- Flight Number: UA210. (On Time performance: 88 - Average Delay: 7 minutes)
- Flight Number: UA2179. (On Time performance: 46 - Average Delay: 27 minutes)
- Flight Number: UA2394. (On Time performance: 45 - Average Delay: 51 minutes)
- Flight Number: UA2465. (On Time performance: 75 - Average Delay: 23 minutes)
- Flight Number: UA2628. (On Time performance: 95 - Average Delay: 4 minutes)
- Flight Number: UA2693. (On Time performance: 79 - Average Delay: 31 minutes)
- Flight Number: UA2866. (On Time performance: 81 - Average Delay: 21 minutes)
- Flight Number: UA343. (On Time performance: 67 - Average Delay: 25 minutes)
- Flight Number: UA448. (On Time performance: 73 - Average Delay: 19 minutes)

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from December 03, 2024 to December 18, 2024. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.