/ Flights / Southwest Airlines / WN921

WN921 Flight Status Southwest Airlines: St. Louis to San Diego (SWA921)

Are you looking for the June 4th, 2026 WN 921 Columbus to Denver flight? Click here to go to our WN921 Columbus to Denver Flight Status page >

WN 921 St. Louis to San Diego Flight Status

Southwest Airlines Flight WN921 from St. Louis Lambert International Airport STL to San Diego International Airport SAN is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on June 2nd, 2025.
Check the table below for WN921's most recent flight history:

WN 921 Flight Status & Schedule

Date Departure Arrival Status
Jun 02 15:20 16:51
Landed
 Track >
< All STL Departures All SAN Arrivals >

Southwest Airlines WN 921 St. Louis to San Diego Flight Information

Southwest Airlines Flight WN921 connects St. Louis, United States to San Diego, United States, taking off from St. Louis Lambert International Airport STL and landing at San Diego International Airport SAN.

How long is the WN921 flight from St. Louis to San Diego?

The average flight time from St. Louis to San Diego is 3 hours and 31 minutes. The flight distance is 2501 km / 1554 miles and the average flight speed is 711 km/h / 442 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN921 St. Louis to San Diego?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN921 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN921 arriving at?

Flight WN921 arrives at San Diego International Airport (SAN) Terminal 1.

When was the latest WN921 flight?

The latest flight took off on Monday, June 2nd, 2025 with the flight status being Landed on 16:51.

How else can the flight WN921 be referenced as?

This Southwest Airlines flight can also be referenced as SWA921, WN0921, WN 921, SWA 921.

How often is flight WN921 delayed?

On average, 0% of all WN921 flights are delayed. The average delay is 0 minutes.

Can I get compensation for my delayed or cancelled WN921 flight or baggage issues?

If your WN921 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 WN921 Flight Tracker above for more details.

WN921 and St. Louis STL to San Diego SAN Flights

This is a multi leg flight of Southwest Airlines WN921. Next leg is San Diego to San Jose

Other flights departing from St. Louis STL: WN1780, WN6406, AS315, WN1269

Other flights arriving at San Diego SAN: WN2022, WN2853, AS1397, WN3507

All flights connecting St. Louis STL to San Diego SAN.

WN921 Southwest Airlines Flight: St. Louis to San Diego Route Map

WN921 Southwest Airlines Flight Map: St. Louis to San Diego
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: F37308 S43246 PF7793 F37024 WT460 VJ3025 AT2165 5Y8817 R51400 N84871
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.