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DL3991 Flight Status Delta Air Lines: San Francisco to Seattle (DAL3991)

Are you looking for the October 16th, 2026 DL 3991 Seattle to San Francisco flight? Click here to go to our DL3991 Seattle to San Francisco Flight Status page >

DL 3991 San Francisco to Seattle Flight Status

Delta Air Lines Flight DL3991 from San Francisco International Airport SFO to Seattle Tacoma International Airport SEA is not scheduled for today October 16th, 2026.
The last time the flight was scheduled was on September 19th, 2026.
Check the table below for DL3991's most recent flight history:

DL 3991 Flight Status & Schedule

Date Departure Arrival Status
Sep 19 20:59 23:14
Scheduled
 Track >
Sep 07 20:59 23:19
Scheduled
 Track >
Aug 29 20:59 23:19
Scheduled
 Track >
Aug 24 20:59 23:19
Scheduled
 Track >
Aug 23 20:59 23:19
Scheduled
 Track >
< All SFO Departures All SEA Arrivals >

Delta Air Lines DL 3991 San Francisco to Seattle Flight Information

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.

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 5/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest DL3991 flight?

The latest flight took off on Sunday, September 20th, 2026 with the flight status being Scheduled on 23:14.

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, 0% of all DL3991 flights are delayed. The average delay is 0 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.

DL3991 and San Francisco SFO to Seattle SEA Flights

Other flights departing from San Francisco SFO: UA5256, OO5256, UA2080, DL8959

Other flights arriving at Seattle SEA: UA1796, AS1476, WN2940, DL394

All flights connecting San Francisco SFO to Seattle SEA.

DL3991 Delta Air Lines Flight: San Francisco to Seattle Route Map

DL3991 Delta Air Lines Flight Map: San Francisco to Seattle
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: 6R10 6R75 6R97 6R85 6R81 MB857 WS4217 SG9127 CW6087 2P2967
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.