| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 17 | SEA | SFO | 19:03 | 21:02 |
Landed Late
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| Jul 16 | SEA | SFO | 19:37 | 21:38 |
Delayed
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| Jul 15 | SEA | SFO | 18:13 | 20:19 |
Landed
|
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| Jul 14 | SEA | SFO | 18:32 | 20:33 |
Landed Late
|
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| Jul 13 | SEA | SFO | 19:34 | 21:36 |
Delayed
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| Jul 12 | SEA | SFO | 18:46 | 20:53 |
Landed Late
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| Jul 11 | SEA | SFO | 18:54 | 20:53 |
Landed Late
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| Jul 10 | SEA | SFO | 18:41 | 20:43 |
Landed Late
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| Jul 09 | SEA | SFO | 20:13 | 22:00 |
Delayed
|
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| Jul 08 | SEA | SFO | 18:45 | 20:36 |
Landed Late
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Delta Air Lines Flight DL3991 connects Seattle, United States to San Francisco, United States, taking off from Seattle Tacoma International Airport SEA and landing at San Francisco International Airport SFO.
How long is the DL3991 flight from Seattle to San Francisco?
The average flight time from Seattle to San Francisco is 1 hour and 59 minutes. The flight distance is 1093 km / 679 miles and the average flight speed is 550 km/h / 342 mph.
How many DL3991 flights are operated per week?
7 flights per week. The flight DL3991 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL3991 Seattle to San Francisco?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL3991 is 4.2/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight DL3991 arriving at?
Flight DL3991 arrives at San Francisco International Airport (SFO) Terminal 1.
When was the latest DL3991 flight?
The latest flight took off on Saturday, July 18th, 2026 with the flight status being Landed on 21:02.
How else can the flight DL3991 be referenced as?
This Delta Air Lines flight can also be referenced as DAL3991, DL 3991, DAL 3991.
How often is flight DL3991 delayed?
On average, 100% of all DL3991 flights are delayed. The average delay is 45 minutes.
Can I get compensation for my delayed or cancelled DL3991 flight or baggage issues?
If your DL3991 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 DL3991 Flight Tracker above for more details.
Flight DL3991 is code-shared by 3 airlines using the flight numbers KL6277, SK3645, VS3214
Other flights departing from Seattle SEA: DL848, DL4100, AS592, AS1433
Other flights arriving at San Francisco SFO: AA2035, WN4330, UA2850, AS3232
All flights connecting Seattle SEA to San Francisco SFO.
