WN 4243 St. Louis to San Francisco Flight Status

Southwest Airlines Flight WN4243 from St. Louis Lambert International Airport STL to San Francisco International Airport SFO is not scheduled for today July 4th, 2026.
The last time the flight was scheduled was on August 4th, 2025.
Check the table below for WN4243's most recent flight history:

WN 4243 Flight Status & Schedule

Date Departure Arrival Status
Aug 04 14:02 15:51
Landed
Track >
Aug 03 18:59 20:56
Landed
Track >
Aug 02 13:09 15:12
Landed
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Aug 01 13:49 15:46
Landed
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Jul 31 14:35 16:18
Landed Late
Track >

Southwest Airlines WN 4243 St. Louis to San Francisco Flight Information

Southwest Airlines Flight WN4243 connects St. Louis, United States to San Francisco, United States, taking off from St. Louis Lambert International Airport STL and landing at San Francisco International Airport SFO.

How long is the WN4243 flight from St. Louis to San Francisco?

The average flight time from St. Louis to San Francisco is 3 hours and 49 minutes. The flight distance is 2786 km / 1731 miles and the average flight speed is 730 km/h / 454 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4243 St. Louis to San Francisco?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4243 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4243 arriving at?

Flight WN4243 arrives at San Francisco International Airport (SFO) Terminal 2.

When was the latest WN4243 flight?

The latest flight took off on Monday, August 4th, 2025 with the flight status being Landed on 15:51.

How else can the flight WN4243 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4243, WN 4243, SWA 4243.

How often is flight WN4243 delayed?

On average, 70% of all WN4243 flights are delayed. The average delay is 16 minutes.

Can I get compensation for my delayed or cancelled WN4243 flight or baggage issues?

If your WN4243 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our WN4243 Flight Tracker above for more details.

WN4243 and St. Louis STL to San Francisco SFO Flights

Other flights departing from St. Louis STL: AA2368, AA3371, WN933, WN2090

Other flights arriving at San Francisco SFO: WN3036, F93361, AA4893, WN2349

All flights connecting St. Louis STL to San Francisco SFO.

WN4243 Southwest Airlines Flight: St. Louis to San Francisco Route Map

WN4243 Southwest Airlines Flight Map: St. Louis to San Francisco
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.