| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 04 | SEA | SJC | 15:33 | 17:48 |
Landed
|
Track > |
| Jan 03 | SEA | SJC | 16:00 | 17:51 |
Landed
|
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| Jan 02 | SEA | SJC | 17:25 | 19:14 |
Delayed
|
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| Jan 01 | SEA | SJC | 18:34 | 20:34 |
Landed Late
|
Track > |
| Dec 31 | SEA | SJC | 17:40 | 19:43 |
Landed
|
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| Dec 30 | SEA | SJC | 15:34 | 17:31 |
Landed
|
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| Dec 29 | SEA | SJC | 15:50 | 17:34 |
Landed
|
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| Dec 28 | SEA | SJC | 16:15 | 17:52 |
Landed
|
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| Dec 27 | SEA | SJC | 16:07 | 17:50 |
Landed
|
Track > |
| Dec 26 | SEA | SJC | 15:41 | 17:27 |
Landed
|
Track > |
Delta Air Lines Flight DL3840 connects Seattle, United States to San Jose, United States, taking off from Seattle Tacoma International Airport SEA and landing at San Jose International Airport SJC.
How long is the DL3840 flight from Seattle to San Jose?
The average flight time from Seattle to San Jose is 1 hour and 52 minutes. The flight distance is 1122 km / 697 miles and the average flight speed is 604 km/h / 375 mph.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL3840 Seattle to San Jose?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL3840 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight DL3840 arriving at?
Flight DL3840 arrives at San Jose International Airport (SJC) Terminal A.
When was the latest DL3840 flight?
The latest flight took off on Monday, January 5th, 2026 with the flight status being Landed on 17:48.
How else can the flight DL3840 be referenced as?
This Delta Air Lines flight can also be referenced as DAL3840, DL 3840, DAL 3840.
How often is flight DL3840 delayed?
On average, 60% of all DL3840 flights are delayed. The average delay is 28 minutes.
Can I get compensation for my delayed or cancelled DL3840 flight or baggage issues?
If your DL3840 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 DL3840 Flight Tracker above for more details.
Flight DL3840 is code-shared by 5 airlines using the flight numbers AF2326, AM4678, KE3109, KL6446, WS8501
Other flights departing from Seattle SEA: AS2159, AS173, AS3421, DL508
Other flights arriving at San Jose SJC: WN576, WN3308, WN4629, WN1646
All flights connecting Seattle SEA to San Jose SJC.
