| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 16 | SFO | SEA | 23:01 | 00:30 |
Delayed
|
Track > |
| Jul 15 | SFO | SEA | 21:16 | 22:41 |
Landed
|
Track > |
| Jul 14 | SFO | SEA | 22:03 | 23:24 |
Landed
|
Track > |
| Jul 13 | SFO | SEA | 22:57 | 00:28 |
Delayed
|
Track > |
| Jul 12 | SFO | SEA | 22:10 | 23:34 |
Landed Late
|
Track > |
| Jul 11 | SFO | SEA | 21:47 | 23:17 |
Landed
|
Track > |
| Jul 10 | SFO | SEA | 21:46 | 23:12 |
Landed
|
Track > |
| Jul 09 | SFO | SEA | 22:56 | 00:30 |
Delayed
|
Track > |
| Jul 08 | SFO | SEA | 21:22 | 23:01 |
Landed
|
Track > |
| Jul 07 | SFO | SEA | 21:18 | 22:47 |
Landed
|
Track > |
Delta Air Lines Flight DL3991 connects San Francisco, United States to Seattle, United States, taking off from San Francisco International Airport SFO and landing at Seattle Tacoma International Airport SEA.
How long is the DL3991 flight from San Francisco to Seattle?
The average flight time from San Francisco to Seattle is 1 hour and 28 minutes. The flight distance is 1093 km / 679 miles and the average flight speed is 741 km/h / 460 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 San Francisco to Seattle?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL3991 is 4.6/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest DL3991 flight?
The latest flight took off on Friday, July 17th, 2026 with the flight status being En-Route on 00:30.
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, 50% of all DL3991 flights are delayed. The average delay is 48 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 2 airlines using the flight numbers SK3470, VS1906
Other flights departing from San Francisco SFO: UA1863, UA5688, UA6027, F94156
Other flights arriving at Seattle SEA: UA2651, WN3856, DL4100, WN3082
All flights connecting San Francisco SFO to Seattle SEA.
