Are you looking for the June 4th, 2026 WN 3966 Sacramento to Chicago flight? Click here to go to our WN3966 Sacramento to Chicago Flight Status page >

WN 3966 Washington to Chicago Flight Status

Southwest Airlines Flight WN3966 from Washington Ronald Reagan National Airport DCA to Chicago Midway International Airport MDW is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on October 29th, 2025.
Check the table below for WN3966's most recent flight history:

WN 3966 Flight Status & Schedule

Date Departure Arrival Status
Oct 29 21:05 21:33
Landed
Track >
Oct 28 21:08 21:34
Landed
Track >
Oct 22 21:02 21:37
Landed
Track >
Oct 21 21:56 22:32
Landed Late
Track >
Oct 15 21:48 22:25
Landed Late
Track >

Southwest Airlines WN 3966 Washington to Chicago Flight Information

Southwest Airlines Flight WN3966 connects Washington, United States to Chicago, United States, taking off from Washington Ronald Reagan National Airport DCA and landing at Chicago Midway International Airport MDW.

How long is the WN3966 flight from Washington to Chicago?

The average flight time from Washington to Chicago is 1 hour and 32 minutes. The flight distance is 964 km / 599 miles and the average flight speed is 625 km/h / 388 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3966 Washington to Chicago?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3966 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest WN3966 flight?

The latest flight took off on Thursday, October 30th, 2025 with the flight status being Landed on 21:33.

How else can the flight WN3966 be referenced as?

This Southwest Airlines flight can also be referenced as SWA3966, WN 3966, SWA 3966.

How often is flight WN3966 delayed?

On average, 50% of all WN3966 flights are delayed. The average delay is 39 minutes.

Can I get compensation for my delayed or cancelled WN3966 flight or baggage issues?

If your WN3966 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 WN3966 Flight Tracker above for more details.

WN3966 and Washington DCA to Chicago MDW Flights

Other flights departing from Washington DCA: AA5090, AA4350, AA2051, AA3584

Other flights arriving at Chicago MDW: WN355, WN2084, WN1816, WN3198

All flights connecting Washington DCA to Chicago MDW.

WN3966 Southwest Airlines Flight: Washington to Chicago Route Map

WN3966 Southwest Airlines Flight Map: Washington to Chicago
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.