WN 4318 Seattle to San Jose Flight Status

Southwest Airlines Flight WN4318 from Seattle Tacoma International Airport SEA to San Jose International Airport SJC 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 WN4318's most recent flight history:

WN 4318 Flight Status & Schedule

Date Departure Arrival Status
Jun 02 20:49 22:23
Landed
Track >
Jun 01 20:32 22:07
Landed
Track >

Southwest Airlines WN 4318 Seattle to San Jose Flight Information

Southwest Airlines Flight WN4318 connects Seattle, United States to San Jose, United States, taking off from Seattle Tacoma International Airport SEA and landing at San Jose International Airport SJC.

How long is the WN4318 flight from Seattle to San Jose?

The average flight time from Seattle to San Jose is 1 hour and 34 minutes. The flight distance is 1122 km / 697 miles and the average flight speed is 712 km/h / 443 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4318 Seattle to San Jose?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4318 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4318 arriving at?

Flight WN4318 arrives at San Jose International Airport (SJC) Terminal B.

When was the latest WN4318 flight?

The latest flight took off on Tuesday, June 3rd, 2025 with the flight status being Landed on 22:23.

How else can the flight WN4318 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4318, WN 4318, SWA 4318.

How often is flight WN4318 delayed?

On average, 50% of all WN4318 flights are delayed. The average delay is 3 minutes.

Can I get compensation for my delayed or cancelled WN4318 flight or baggage issues?

If your WN4318 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 WN4318 Flight Tracker above for more details.

WN4318 and Seattle SEA to San Jose SJC Flights

Other flights departing from Seattle SEA: AS509, AS1040, AS3316, AS321

Other flights arriving at San Jose SJC: WN4359, WN3205, WN4171, WN4425

All flights connecting Seattle SEA to San Jose SJC.

WN4318 Southwest Airlines Flight: Seattle to San Jose Route Map

WN4318 Southwest Airlines Flight Map: Seattle to San Jose
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.