| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 04 | SJC | SEA | 18:34 | 20:14 |
Landed
|
Track > |
| Jan 03 | SJC | SEA | 18:41 | 20:17 |
Landed
|
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| Jan 02 | SJC | SEA | 20:53 | 22:32 |
Delayed
|
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| Dec 30 | SJC | SEA | 18:22 | 19:55 |
Landed
|
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| Dec 29 | SJC | SEA | 18:35 | 20:18 |
Landed
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| Dec 28 | SJC | SEA | 19:00 | 20:50 |
Landed
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| Dec 27 | SJC | SEA | 18:47 | 20:57 |
Landed
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| Dec 26 | SJC | SEA | 18:31 | 20:29 |
Landed
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| Dec 23 | SJC | SEA | 18:36 | 20:10 |
Landed
|
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| Dec 22 | SJC | SEA | 18:38 | 20:18 |
Landed
|
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Delta Air Lines Flight DL3840 connects San Jose, United States to Seattle, United States, taking off from San Jose International Airport SJC and landing at Seattle Tacoma International Airport SEA.
How long is the DL3840 flight from San Jose to Seattle?
The average flight time from San Jose to Seattle is 1 hour and 44 minutes. The flight distance is 1122 km / 697 miles and the average flight speed is 652 km/h / 405 mph.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL3840 San Jose to Seattle?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL3840 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest DL3840 flight?
The latest flight took off on Monday, January 5th, 2026 with the flight status being Landed on 20:14.
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, 30% of all DL3840 flights are delayed. The average delay is 37 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.
Other flights departing from San Jose SJC: WN1876, WN2219, WN2638, WN791
Other flights arriving at Seattle SEA: DL2635, DL675, DL3834, DL3720
All flights connecting San Jose SJC to Seattle SEA.
