UA1840 United Airlines - Flight Status

Which is the frequency of flight UA1840?
The flight UA1840 is scheduled to flight on daily basis.

Which is the distance of flight UA1840?
The distance between the two airports is 364 miles.

Which is the flight time of flight UA1840?
The scheduled flight time gate to gate is: 01:18 hours.
The real flight time gate to gate on average is: 01:22 hours.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

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

Frontier Airlines
- Flight Number: F92677. (On Time performance: 46 - Average Delay: 46 minutes)

United Airlines
- Flight Number: UA1585. (On Time performance: 30 - Average Delay: 25 minutes)
- Flight Number: UA2332. (On Time performance: 85 - Average Delay: 6 minutes)
- Flight Number: UA2647. (On Time performance: 97 - Average Delay: 2 minutes)
- Flight Number: UA393. (On Time performance: 30 - Average Delay: 36 minutes)

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

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 March 09, 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.

Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.