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WN 4340 St. Louis to Detroit Flight Status

Southwest Airlines Flight WN4340 from St. Louis Lambert International Airport STL to Detroit Metropolitan Wayne County Airport DTW is not scheduled for today June 5th, 2026.
The last time the flight was scheduled was on April 6th, 2026.
Check the table below for WN4340's most recent flight history:

WN 4340 Flight Status & Schedule

Date Departure Arrival Status
Apr 06 10:29 12:37
Landed
Track >
Apr 03 11:04 13:09
Landed Late
Track >
Apr 02 10:32 12:32
Landed
Track >
Apr 01 11:40 13:40
Landed
Track >
Mar 31 11:11 13:14
Landed
Track >

Southwest Airlines WN 4340 St. Louis to Detroit Flight Information

Southwest Airlines Flight WN4340 connects St. Louis, United States to Detroit, United States, taking off from St. Louis Lambert International Airport STL and landing at Detroit Metropolitan Wayne County Airport DTW.

How long is the WN4340 flight from St. Louis to Detroit?

The average flight time from St. Louis to Detroit is 1 hour and 4 minutes. The flight distance is 707 km / 439 miles and the average flight speed is 664 km/h / 413 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4340 St. Louis to Detroit?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4340 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4340 arriving at?

Flight WN4340 arrives at Detroit Metropolitan Wayne County Airport (DTW) Terminal E.

When was the latest WN4340 flight?

The latest flight took off on Monday, April 6th, 2026 with the flight status being Landed on 12:37.

How else can the flight WN4340 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4340, WN 4340, SWA 4340.

How often is flight WN4340 delayed?

On average, 30% of all WN4340 flights are delayed. The average delay is 19 minutes.

Can I get compensation for my delayed or cancelled WN4340 flight or baggage issues?

If your WN4340 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 WN4340 Flight Tracker above for more details.

WN4340 and St. Louis STL to Detroit DTW Flights

Other flights departing from St. Louis STL: WN1119, WN2480, WN175, WN4405

Other flights arriving at Detroit DTW: DL433, OO3687, AA3374, DL4899

All flights connecting St. Louis STL to Detroit DTW.

WN4340 Southwest Airlines Flight: St. Louis to Detroit Route Map

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.