| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 29 | SAN | DEN | 16:58 | 19:46 |
Delayed
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Track > |
| Sep 28 | SAN | DEN | 16:08 | 18:59 |
Landed
|
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| Sep 27 | SAN | DEN | 15:56 | 18:47 |
Landed
|
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| Sep 26 | SAN | DEN | 15:43 | 18:35 |
Landed
|
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| Sep 25 | SAN | DEN | 15:42 | 18:30 |
Landed
|
Track > |
| Sep 22 | SAN | DEN | 16:57 | 19:42 |
Delayed
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| Sep 21 | SAN | DEN | 16:15 | 18:58 |
Landed
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| Sep 20 | SAN | DEN | 16:31 | 19:17 |
Landed
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| Sep 19 | SAN | DEN | 15:53 | 18:39 |
Landed
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| Sep 18 | SAN | DEN | 18:28 | 18:40 |
Unknown
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Southwest Airlines Flight WN3999 connects San Diego, United States to Denver, United States, taking off from San Diego International Airport SAN and landing at Denver International Airport DEN.
How long is the WN3999 flight from San Diego to Denver?
The average flight time from San Diego to Denver is 1 hour and 47 minutes. The flight distance is 1371 km / 852 miles and the average flight speed is 746 km/h / 464 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3999 San Diego to Denver?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3999 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN3999 arriving at?
Flight WN3999 arrives at Denver International Airport (DEN) Terminal 1.
When was the latest WN3999 flight?
The latest flight took off on Tuesday, September 30th, 2025 with the flight status being En-Route on 19:46.
How else can the flight WN3999 be referenced as?
This Southwest Airlines flight can also be referenced as SWA3999, WN 3999, SWA 3999.
How often is flight WN3999 delayed?
On average, 30% of all WN3999 flights are delayed. The average delay is 46 minutes.
Can I get compensation for my delayed or cancelled WN3999 flight or baggage issues?
If your WN3999 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 WN3999 Flight Tracker above for more details.
Other flights departing from San Diego SAN: WN1294, WN4208, AS1135, WN3401
Other flights arriving at Denver DEN: WN2262, WN3151, WN2443, WN2340
All flights connecting San Diego SAN to Denver DEN.
