UA231 United Airlines - Flight Status

Below, you can find details about United Airlines flight UA231, which currently operates between the airports of Newark - Newark Liberty International Airport (Airport Code EWR) and San Francisco - San Francisco International Airport (Airport Code SFO).
This flight data pertains specifically to the flight's details for Friday, January 30, 2026.

UA231 On Time performance:
58
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

UA231 United Airlines to San Francisco

En Route - On-time
Flight Status for Friday January 30, 2026
This flight is also scheduled for Tomorrow (February 01, 2026). See it here

Airline information

United Airlines
United Airlines
Equipment: Boeing 757-200 (winglets) Passenger

Departure

Newark (EWR)
January 30, 2026
Newark Liberty International Airport
Departed at:
08:18 pm
Terminal:
C
Gate:
C83
Scheduled Departure Time: 08:20 pm

Arrival

San Francisco (SFO)
January 30, 2026
San Francisco International Airport
Estimated Arrival Time:
11:22 pm
Terminal:
3
Gate:
F17
Scheduled Arrival Time: 11:57 pm
Baggage: 9
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.airport-ewr.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- NZ9135 - Air New Zealand

- VA8167 - Virgin Australia

Additional Information

Which is the frequency of flight UA231?
The flight UA231 is scheduled to flight on daily basis.

Which is the distance of flight UA231?
The distance between the two airports is 2560 miles.

Which is the flight time of flight UA231?
The scheduled flight time gate to gate is: 06:37 hours.
The real flight time gate to gate on average is: 06:14 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 Newark: 2026-01-31 01:34:50
Current Time in San Francisco: 2026-01-30 22:34:50

Alternative Flights

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

Alaska Airlines
- Flight Number: AS293. (On Time performance: 71 - Average Delay: 24 minutes)
- Flight Number: AS373. (On Time performance: 74 - Average Delay: 16 minutes)

United Airlines
- Flight Number: UA1227. (On Time performance: 70 - Average Delay: 34 minutes)
- Flight Number: UA1340. (On Time performance: 65 - Average Delay: 50 minutes)
- Flight Number: UA1343. (On Time performance: 65 - Average Delay: 29 minutes)
- Flight Number: UA1558. (On Time performance: 54 - Average Delay: 39 minutes)
- Flight Number: UA1777. (On Time performance: 65 - Average Delay: 25 minutes)
- Flight Number: UA1844. (On Time performance: 63 - Average Delay: 37 minutes)
- Flight Number: UA1960. (On Time performance: 67 - Average Delay: 54 minutes)
- Flight Number: UA2115. (On Time performance: 80 - Average Delay: 13 minutes)
- Flight Number: UA2328. (On Time performance: 67 - Average Delay: 41 minutes)
- Flight Number: UA648. (On Time performance: 66 - Average Delay: 31 minutes)

Punctuality and delays

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

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from January 08, 2026 to January 26, 2026, we have obtained these figures.
Total number of flights: 12
On Time: 7 ( 58 % )
Moderate Delay: 1 ( 8 % )
Significant Delay: 1 ( 8 % )
Major Delay: 3 ( 25 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 38 minutes.
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 06, 2025 to March 28, 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.

Last Past Flights UA231

Date
Departure
Arrival
Duration
Aircraft
Status
Friday
30 January
08:18 pm
Newark (EWR)
11:22 pm
San Francisco (SFO)
06h 04min
Boeing 757-200
Boeing 757-200
- On-time
Thursday
29 January
08:15 pm
Newark (EWR)
11:24 pm
San Francisco (SFO)
06h 09min
Boeing 757-200
Boeing 757-200
Landed - On-time
Monday
26 January
10:39 pm
Newark (EWR)
02:03 am
San Francisco (SFO)
06h 24min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Sunday
25 January
08:20 pm
Newark (EWR)
11:57 pm
San Francisco (SFO)
06h 37min
Boeing 757-200
Boeing 757-200
Friday
23 January
08:33 pm
Newark (EWR)
12:18 am
San Francisco (SFO)
06h 45min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Thursday
22 January
09:08 pm
Newark (EWR)
12:28 am
San Francisco (SFO)
06h 20min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Monday
19 January
08:16 pm
Newark (EWR)
11:24 pm
San Francisco (SFO)
06h 08min
Boeing 757-200
Boeing 757-200
Landed - On-time
Friday
16 January
08:18 pm
Newark (EWR)
11:23 pm
San Francisco (SFO)
06h 05min
Boeing 757-200
Boeing 757-200
Landed - On-time
Thursday
15 January
09:13 pm
Newark (EWR)
11:55 pm
San Francisco (SFO)
05h 42min
Boeing 757-200
Boeing 757-200
Landed - On-time
Wednesday
14 January
08:33 pm
Newark (EWR)
11:38 pm
San Francisco (SFO)
06h 05min
Boeing 757-200
Boeing 757-200
Landed - On-time