Airport Tips & Quick Reference Guide to Seattle–Tacoma Airport - Seatac (SEA)

WN142 Southwest Airlines - Flight Status

Below, you can find details about Southwest Airlines flight WN142, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Chicago - Chicago Midway International Airport (Airport Code MDW).
This flight data pertains specifically to the flight's details for Monday, August 31, 2026.

WN142 On Time performance:
73
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

WN142 Southwest Airlines to Chicago

Landed - On-time
Flight Status for Monday August 31, 2026

Airline information

Southwest Airlines
Southwest Airlines
Equipment: Boeing 737MAX 8 Passenger

Departure

Seattle (SEA)
August 31, 2026
Seattle-Tacoma International Airport
Departed at:
11:00 am
Gate:
B14
Scheduled Departure Time: 10:50 am

Arrival

Chicago (MDW)
August 31, 2026
Chicago Midway International Airport
Arrived at:
04:54 pm
Terminal:
-
Gate:
A15
Scheduled Arrival Time: 04:55 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.seattle-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 WN142?
The flight WN142 is scheduled to flight on Monday, Thursday, Friday on a weekly basis.

Which is the distance of flight WN142?
The distance between the two airports is 1729 miles.

Which is the flight time of flight WN142?
The scheduled flight time gate to gate is: 04:05 hours.
The real flight time gate to gate on average is: 03:53 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 Seattle: 2026-09-01 01:42:08
Current Time in Chicago: 2026-09-01 03:42:08

Alternative Flights

The following airline serve the same route between Seattle and Chicago:
Southwest Airlines - Flight Number: WN1396. (On Time performance: 75 - Average Delay: 9 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 August 06, 2026 to August 28, 2026, we have obtained these figures.
Total number of flights: 11
On Time: 8 ( 73 % )
Moderate Delay: 1 ( 9 % )
Significant Delay: 1 ( 9 % )
Major Delay: 1 ( 9 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 12 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from August 06, 2026 to August 28, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

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

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 WN142

Date
Departure
Arrival
Duration
Aircraft
Status
Monday
31 August
11:00 am
Seattle (SEA)
04:54 pm
Chicago (MDW)
03h 54min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Friday
28 August
10:57 am
Seattle (SEA)
04:55 pm
Chicago (MDW)
03h 58min
Boeing 737-800
Boeing 737-800
Landed - On-time
Thursday
27 August
12:00 pm
Seattle (SEA)
05:56 pm
Chicago (MDW)
03h 56min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Monday
24 August
11:25 am
Seattle (SEA)
05:27 pm
Chicago (MDW)
04h 02min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Friday
21 August
10:54 am
Seattle (SEA)
04:49 pm
Chicago (MDW)
03h 55min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
20 August
11:03 am
Seattle (SEA)
04:59 pm
Chicago (MDW)
03h 56min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Monday
17 August
11:02 am
Seattle (SEA)
04:42 pm
Chicago (MDW)
03h 40min
Boeing 737-800
Boeing 737-800
Landed - On-time
Friday
14 August
10:47 am
Seattle (SEA)
04:35 pm
Chicago (MDW)
03h 48min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
13 August
11:11 am
Seattle (SEA)
05:06 pm
Chicago (MDW)
03h 55min
Boeing 737-800
Boeing 737-800
Landed - On-time
Monday
10 August
10:58 am
Seattle (SEA)
04:47 pm
Chicago (MDW)
03h 49min
Boeing 737-800
Boeing 737-800
Landed - On-time