WN4020 Southwest Airlines - Flight Status
Below, you can find details about Southwest Airlines flight WN4020, which currently operates between the airports of Las Vegas - Las Vegas Harry Reid International Airport (Airport Code LAS) and Buffalo - Buffalo Niagara International Airport (Airport Code BUF).
This flight data pertains specifically to the flight's details for Thursday, April 09, 2026.
Table of contents:
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN4020
Flight Status Additional Information Alternative Flights Punctuality and delays Last Past Flights WN4020
WN4020 On Time performance:
n/a
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. Flight Status
WN4020 Southwest Airlines to Buffalo
Landed - Delayed
Delay: 21 minutes
Flight Status for Thursday April 09, 2026
This flight is also scheduled for Today (April 10, 2026). See it here
This flight is also scheduled for Tomorrow (April 11, 2026). See it here
Landed - Delayed
Delay: 21 minutes
Flight Status for Thursday April 09, 2026
Airline information
Southwest Airlines
Equipment: Boeing 737-800 (Scimitar Winglets) Passenger
Departure
Las Vegas (LAS)
April 09, 2026
Las Vegas Harry Reid International Airport
Departed at:
12:17 pm
Terminal:
1
Gate:
C14
Scheduled Departure Time: 12:00 pm
Arrival
Buffalo (BUF)
April 09, 2026
Buffalo Niagara International Airport
Arrived at:
07:41 pm
Terminal:
-
Gate:
16
Scheduled Arrival Time: 07:20 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.las-vegas-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 WN4020?
The flight WN4020 is scheduled to flight on Tuesday, Wednesday, Thursday, Friday on a weekly basis.
Which is the distance of flight WN4020?
The distance between the two airports is 1982 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 Las Vegas: 2026-04-10 18:36:32
Current Time in Buffalo: 2026-04-10 21:36:32
The flight WN4020 is scheduled to flight on Tuesday, Wednesday, Thursday, Friday on a weekly basis.
Which is the distance of flight WN4020?
The distance between the two airports is 1982 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 Las Vegas: 2026-04-10 18:36:32
Current Time in Buffalo: 2026-04-10 21:36:32
Alternative Flights
The following airline serve the same route between Las Vegas and Buffalo:
Southwest Airlines - Flight Number: WN1287. (On Time performance: 71 - Average Delay: 21 minutes)
Southwest Airlines - Flight Number: WN1287. (On Time performance: 71 - Average Delay: 21 minutes)
Punctuality and delays
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: 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
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
Last Past Flights WN4020
Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
09 April
09 April
12:17 pm
Las Vegas (LAS)
Las Vegas (LAS)
07:41 pm
Buffalo (BUF)
Buffalo (BUF)
04h 24min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Wednesday
08 April
08 April
11:13 am
Las Vegas (LAS)
Las Vegas (LAS)
01:59 pm
Denver (DEN)
Denver (DEN)
23h 46min
Boeing 737-700
Boeing 737-700
Landed - On-time
Tuesday
07 April
07 April
11:18 am
Las Vegas (LAS)
Las Vegas (LAS)
02:05 pm
Denver (DEN)
Denver (DEN)
23h 47min
Boeing 737-700
Boeing 737-700
Landed - On-time