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WN4378 Flight Status Southwest Airlines: Baltimore to San Diego (SWA4378)

WN 4378 Baltimore to San Diego Flight Status

Southwest Airlines Flight WN4378 from Baltimore Washington International Airport BWI 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 WN4378's most recent flight history:

WN 4378 Flight Status & Schedule

Date Departure Arrival Status
Jun 02 21:05 23:16
Landed
 Track >
Jun 01 19:20 21:08
Landed
 Track >
< All BWI Departures All SAN Arrivals >

Southwest Airlines WN 4378 Baltimore to San Diego Flight Information

Southwest Airlines Flight WN4378 connects Baltimore, United States to San Diego, United States, taking off from Baltimore Washington International Airport BWI and landing at San Diego International Airport SAN.

How long is the WN4378 flight from Baltimore to San Diego?

The average flight time from Baltimore to San Diego is 4 hours and 59 minutes. The flight distance is 3685 km / 2290 miles and the average flight speed is 739 km/h / 459 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4378 Baltimore to San Diego?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4378 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4378 arriving at?

Flight WN4378 arrives at San Diego International Airport (SAN) Terminal 1.

When was the latest WN4378 flight?

The latest flight took off on Tuesday, June 3rd, 2025 with the flight status being Landed on 23:16.

How else can the flight WN4378 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4378, WN 4378, SWA 4378.

How often is flight WN4378 delayed?

On average, 100% of all WN4378 flights are delayed. The average delay is 2 minutes.

Can I get compensation for my delayed or cancelled WN4378 flight or baggage issues?

If your WN4378 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 WN4378 Flight Tracker above for more details.

WN4378 and Baltimore BWI to San Diego SAN Flights

Other flights departing from Baltimore BWI: WN2069, WN3238, WN3820, WN580

Other flights arriving at San Diego SAN: AS818, WN1899, WN5210, AS171

All flights connecting Baltimore BWI to San Diego SAN.

WN4378 Southwest Airlines Flight: Baltimore to San Diego Route Map

WN4378 Southwest Airlines Flight Map: Baltimore to San Diego
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: 9M9925 RQ2009 CG2570 MX9717 XN1943 5Y8752 AC7838 A87197 VF6335 FJ1151
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.