| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 16 | DCA | STL | 19:27 | 20:05 |
Landed
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| Sep 15 | DCA | STL | 19:27 | 20:10 |
Landed
|
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| Sep 09 | DCA | STL | 19:02 | 19:45 |
Landed
|
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| Sep 08 | DCA | STL | 19:26 | 20:08 |
Landed
|
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| Aug 26 | DCA | STL | 19:13 | 20:02 |
Landed
|
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| Aug 25 | DCA | STL | 19:01 | 19:52 |
Landed
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| Aug 19 | DCA | STL | 19:00 | 19:47 |
Landed
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| Aug 18 | DCA | STL | 19:02 | 19:48 |
Landed
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| Aug 05 | DCA | STL | 20:07 | 20:50 |
Delayed
|
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| Aug 04 | DCA | STL | 19:00 | 19:41 |
Landed
|
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Southwest Airlines Flight WN4166 connects Washington, United States to St. Louis, United States, taking off from Washington Ronald Reagan National Airport DCA and landing at St. Louis Lambert International Airport STL.
How long is the WN4166 flight from Washington to St. Louis?
The average flight time from Washington to St. Louis is 1 hour and 44 minutes. The flight distance is 1154 km / 717 miles and the average flight speed is 665 km/h / 413 mph.
How many WN4166 flights are operated per week?
2 flights per week. The flight WN4166 is operated on Tuesday and Wednesday.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4166 Washington to St. Louis?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4166 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4166 arriving at?
Flight WN4166 arrives at St. Louis Lambert International Airport (STL) Terminal 2.
When was the latest WN4166 flight?
The latest flight took off on Thursday, September 17th, 2026 with the flight status being Landed on 20:05.
How else can the flight WN4166 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4166, WN 4166, SWA 4166.
How often is flight WN4166 delayed?
On average, 50% of all WN4166 flights are delayed. The average delay is 15 minutes.
Can I get compensation for my delayed or cancelled WN4166 flight or baggage issues?
If your WN4166 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 WN4166 Flight Tracker above for more details.
Other flights departing from Washington DCA: OH5673, AC8785, YX5689, QK8785
Other flights arriving at St. Louis STL: WN3428, WN4142, WN2218, G74518
All flights connecting Washington DCA to St. Louis STL.