Informational Guide to Ontario Airport (ONT) - NON OFFICIAL

WN203 Southwest Airlines - Flight Status

Below, you can find details about Southwest Airlines flight WN203, which currently operates between the airports of Chicago - Chicago Midway International Airport (Airport Code MDW) and Ontario - Ontario International Airport (Airport Code ONT).
This flight data pertains specifically to the flight's details for Sunday, August 17, 2025.

WN203 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

WN203 Southwest Airlines from Chicago

This flight is not scheduled for August 20, 2025.

Airline information

Southwest Airlines
Southwest Airlines

Departure

Chicago (MDW)
August 17, 2025
Chicago Midway International Airport

Arrival

Ontario (ONT)
August 17, 2025
Ontario International Airport
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 WN203?
The flight WN203 is scheduled to flight on Saturday, Sunday on a weekly basis.

Which is the distance of flight WN203?
The distance between the two airports is 1703 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 Chicago: 2025-08-20 10:51:02
Current Time in Ontario: 2025-08-20 08:51:02

Alternative Flights

The following airline serve the same route between Chicago and Ontario:
Southwest Airlines - Flight Number: WN1500. (On Time performance: 74 - Average Delay: 27 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: We have gathered available data from last twelve closed months, spanning from October 03, 2024 to November 01, 2024. 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.

Last Past Flights WN203

Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
17 August
12:45 pm
Chicago (MDW)
03:02 pm
Ontario (ONT)
04h 17min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Saturday
16 August
08:18 am
Chicago (MDW)
10:22 am
Ontario (ONT)
04h 04min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
10 August
01:03 pm
Chicago (MDW)
03:09 pm
Ontario (ONT)
04h 06min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Saturday
09 August
08:34 am
Chicago (MDW)
10:33 am
Ontario (ONT)
03h 59min
Boeing 737MAX
Boeing 737MAX
Landed - On-time