| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Mar 04 | SAN | SFO | 19:38 | 20:47 |
Landed
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| Mar 03 | SAN | SFO | 19:48 | 20:56 |
Landed
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| Mar 02 | SAN | SFO | 17:21 | 18:27 |
Landed
|
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| Mar 01 | SAN | SFO | 18:52 | 20:00 |
Landed
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| Feb 27 | SAN | SFO | 19:00 | 20:04 |
Landed
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| Feb 26 | SAN | SFO | 18:46 | 19:54 |
Landed
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| Feb 25 | SAN | SFO | 19:41 | 20:47 |
Landed
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| Feb 24 | SAN | SFO | 19:54 | 21:12 |
Landed
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| Feb 23 | SAN | SFO | 17:27 | 18:35 |
Landed
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| Feb 22 | SAN | SFO | 19:00 | 20:12 |
Landed
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Southwest Airlines Flight WN3421 connects San Diego, United States to San Francisco, United States, taking off from San Diego International Airport SAN and landing at San Francisco International Airport SFO.
How long is the WN3421 flight from San Diego to San Francisco?
The average flight time from San Diego to San Francisco is 1 hour and 8 minutes. The flight distance is 719 km / 447 miles and the average flight speed is 630 km/h / 391 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3421 San Diego to San Francisco?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3421 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN3421 arriving at?
Flight WN3421 arrives at San Francisco International Airport (SFO) Terminal 2.
When was the latest WN3421 flight?
The latest flight took off on Thursday, March 5th, 2026 with the flight status being Landed on 20:47.
How else can the flight WN3421 be referenced as?
This Southwest Airlines flight can also be referenced as SWA3421, WN 3421, SWA 3421.
How often is flight WN3421 delayed?
On average, 10% of all WN3421 flights are delayed. The average delay is 7 minutes.
Can I get compensation for my delayed or cancelled WN3421 flight or baggage issues?
If your WN3421 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 WN3421 Flight Tracker above for more details.
Other flights departing from San Diego SAN: WN160, WN2619, WN3982, WN345
Other flights arriving at San Francisco SFO: AA888, UA583, UA5907, WN3022
All flights connecting San Diego SAN to San Francisco SFO.