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WN 3878 Chicago to Philadelphia Flight Status

Southwest Airlines Flight WN3878 from Chicago Midway International Airport MDW to Philadelphia International Airport PHL is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on August 3rd, 2025.
Check the table below for WN3878's most recent flight history:

WN 3878 Flight Status & Schedule

Date Departure Arrival Status
Aug 03 13:36 16:03
Landed
Track >
Aug 02 20:03 22:26
Landed Late
Track >
Jul 30 06:33 09:02
Landed
Track >
Jul 29 06:37 09:12
Landed
Track >
Jul 27 13:36 16:11
Landed
Track >

Southwest Airlines WN 3878 Chicago to Philadelphia Flight Information

Southwest Airlines Flight WN3878 connects Chicago, United States to Philadelphia, United States, taking off from Chicago Midway International Airport MDW and landing at Philadelphia International Airport PHL.

How long is the WN3878 flight from Chicago to Philadelphia?

The average flight time from Chicago to Philadelphia is 1 hour and 28 minutes. The flight distance is 1073 km / 667 miles and the average flight speed is 730 km/h / 454 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3878 Chicago to Philadelphia?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3878 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN3878 arriving at?

Flight WN3878 arrives at Philadelphia International Airport (PHL) Terminal E.

When was the latest WN3878 flight?

The latest flight took off on Sunday, August 3rd, 2025 with the flight status being Landed on 16:03.

How else can the flight WN3878 be referenced as?

This Southwest Airlines flight can also be referenced as SWA3878, WN 3878, SWA 3878.

How often is flight WN3878 delayed?

On average, 10% of all WN3878 flights are delayed. The average delay is 26 minutes.

Can I get compensation for my delayed or cancelled WN3878 flight or baggage issues?

If your WN3878 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 WN3878 Flight Tracker above for more details.

WN3878 and Chicago MDW to Philadelphia PHL Flights

Other flights departing from Chicago MDW: WN2077, WN3349, WN3892, WN4745

Other flights arriving at Philadelphia PHL: AA2588, NK1109, AA6081, AA2368

All flights connecting Chicago MDW to Philadelphia PHL.

WN3878 Southwest Airlines Flight: Chicago to Philadelphia Route Map

WN3878 Southwest Airlines Flight Map: Chicago to Philadelphia
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.