WN4255 Southwest Airlines - Flight Status
Below, you can find details about Southwest Airlines flight WN4255, which currently operates between the airports of San Jose - San Jose Mineta International Airport (Airport Code SJC) and Ontario - Ontario International Airport (Airport Code ONT).
This flight data pertains specifically to the flight's details for Tuesday, April 28, 2026.
Table of contents:
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN4255
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN4255
WN4255 On Time performance:
79
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
WN4255 Southwest Airlines from San Jose
Scheduled - Delayed
Delay: 15 minutes
Flight Status for Tuesday April 28, 2026
This flight was also scheduled for Yesterday (April 27, 2026). See it here
Scheduled - Delayed
Delay: 15 minutes
Flight Status for Tuesday April 28, 2026
Airline information
Southwest Airlines
Equipment: Boeing 737-700 Passenger (Scimitar Winglets)
Departure
San Jose (SJC)
April 28, 2026
San Jose Mineta International Airport
Estimated Departure Time:
06:40 pm
Terminal:
B
Gate:
21
Scheduled Departure Time: 06:25 pm
Arrival
Ontario (ONT)
April 28, 2026
Ontario International Airport
Estimated Arrival Time:
07:55 pm
Terminal:
4
Gate:
-
Scheduled Arrival Time: 07:40 pm
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.ontario-airport.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.
Additional Information
Which is the frequency of flight WN4255?
The flight WN4255 is scheduled to flight on daily basis.
Which is the distance of flight WN4255?
The distance between the two airports is 333 miles.
Which is the flight time of flight WN4255?
The scheduled flight time gate to gate is: 01:15 hours.
The real flight time gate to gate on average is: 01:12 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight WN4255 is scheduled to flight on daily basis.
Which is the distance of flight WN4255?
The distance between the two airports is 333 miles.
Which is the flight time of flight WN4255?
The scheduled flight time gate to gate is: 01:15 hours.
The real flight time gate to gate on average is: 01:12 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
Alternative Flights
The following airline serve the same route between San Jose and Ontario:
Southwest Airlines - Flight Number: WN1173. (On Time performance: 88 - Average Delay: 3 minutes)
Southwest Airlines - Flight Number: WN1173. (On Time performance: 88 - Average Delay: 3 minutes)
Punctuality and delays
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: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from April 07, 2026 to April 25, 2026, we have obtained these figures.
Total number of flights: 19
On Time: 15 ( 79 % )
Moderate Delay: 3 ( 16 % )
Significant Delay: 1 ( 5 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 8 minutes.
Total number of flights: 19
On Time: 15 ( 79 % )
Moderate Delay: 3 ( 16 % )
Significant Delay: 1 ( 5 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 8 minutes.
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights WN4255
Date
Departure
Arrival
Duration
Aircraft
Status
Monday
27 April
27 April
04:53 pm
San Jose (SJC)
San Jose (SJC)
06:06 pm
Ontario (ONT)
Ontario (ONT)
01h 13min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
26 April
26 April
06:01 pm
San Jose (SJC)
San Jose (SJC)
07:13 pm
Ontario (ONT)
Ontario (ONT)
01h 12min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Saturday
25 April
25 April
04:38 pm
San Jose (SJC)
San Jose (SJC)
05:56 pm
Ontario (ONT)
Ontario (ONT)
01h 18min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Friday
24 April
24 April
04:56 pm
San Jose (SJC)
San Jose (SJC)
06:11 pm
Ontario (ONT)
Ontario (ONT)
01h 15min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
23 April
23 April
05:08 pm
San Jose (SJC)
San Jose (SJC)
06:26 pm
Ontario (ONT)
Ontario (ONT)
01h 18min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Wednesday
22 April
22 April
06:20 pm
San Jose (SJC)
San Jose (SJC)
07:29 pm
Ontario (ONT)
Ontario (ONT)
01h 09min
Boeing 737-700
Boeing 737-700
Landed - On-time
Tuesday
21 April
21 April
06:20 pm
San Jose (SJC)
San Jose (SJC)
07:33 pm
Ontario (ONT)
Ontario (ONT)
01h 13min
Boeing 737-700
Boeing 737-700
Landed - On-time
Monday
20 April
20 April
04:43 pm
San Jose (SJC)
San Jose (SJC)
05:57 pm
Ontario (ONT)
Ontario (ONT)
01h 14min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
19 April
19 April
05:54 pm
San Jose (SJC)
San Jose (SJC)
07:05 pm
Ontario (ONT)
Ontario (ONT)
01h 11min
Boeing 737-800
Boeing 737-800
Landed - On-time
Saturday
18 April
18 April
04:48 pm
San Jose (SJC)
San Jose (SJC)
05:58 pm
Ontario (ONT)
Ontario (ONT)
01h 10min
Boeing 737-800
Boeing 737-800
Landed - Delayed