Informational Guide to Seattle–Tacoma Airport - Seatac (SEA) - NON OFFICIAL

DL3956 Delta Air Lines - Flight Status

Below, you can find details about Delta Air Lines flight DL3956, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and San Jose - San Jose Mineta International Airport (Airport Code SJC).
This flight data pertains specifically to the flight's details for Saturday, January 10, 2026.

DL3956 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

DL3956 Delta Air Lines to San Jose

Airline information

Delta Air Lines
Delta Air Lines

Departure

Seattle (SEA)
January 07, 2026
Seattle-Tacoma International Airport

Arrival

San Jose (SJC)
January 07, 2026
San Jose Mineta International Airport
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.seattle-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- KL6447 - KLM Royal Dutch Airlines

- VS1766 - Virgin Atlantic

Additional Information

Which is the frequency of flight DL3956?
The flight DL3956 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday on a weekly basis.

Which is the distance of flight DL3956?
The distance between the two airports is 697 miles.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

Alternative Flights

The following airlines serves the same route between Seattle and San Jose:

Alaska Airlines
- Flight Number: AS1303. (On Time performance: 73 - Average Delay: 12 minutes)
- Flight Number: AS1341. (On Time performance: 90 - Average Delay: 4 minutes)
- Flight Number: AS154. (On Time performance: 81 - Average Delay: 12 minutes)
- Flight Number: AS3095. (On Time performance: 64 - Average Delay: 25 minutes)
- Flight Number: AS521. (On Time performance: 92 - Average Delay: 6 minutes)
- Flight Number: AS657. (On Time performance: 64 - Average Delay: 14 minutes)
- Flight Number: AS761. (On Time performance: 70 - Average Delay: 13 minutes)

Delta Air Lines
- Flight Number: DL3557. (On Time performance: 92 - Average Delay: 4 minutes)
- Flight Number: DL3559. (On Time performance: 92 - Average Delay: 4 minutes)
- Flight Number: DL3736. (On Time performance: 85 - Average Delay: 13 minutes)
- Flight Number: DL3789. (On Time performance: 83 - Average Delay: 14 minutes)
- Flight Number: DL3840. (On Time performance: 88 - Average Delay: 10 minutes)
- Flight Number: DL3994. (On Time performance: 67 - Average Delay: 26 minutes)
- Flight Number: DL3999. (On Time performance: 89 - Average Delay: 5 minutes)
- Flight Number: DL4132.

Southwest Airlines
- Flight Number: WN1504. (On Time performance: 92 - Average Delay: 4 minutes)
- Flight Number: WN1926. (On Time performance: 88 - Average Delay: 4 minutes)
- Flight Number: WN2144. (On Time performance: 56 - Average Delay: 41 minutes)
- Flight Number: WN2531. (On Time performance: 68 - Average Delay: 11 minutes)
- Flight Number: WN3568.
- Flight Number: WN4297. (On Time performance: 59 - Average Delay: 21 minutes)
- Flight Number: WN4693. (On Time performance: 61 - Average Delay: 12 minutes)
- Flight Number: WN816. (On Time performance: 72 - Average Delay: 19 minutes)
- Flight Number: WN961.

Punctuality and delays

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions

Last Past Flights DL3956

Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
08 January
07:44 pm
Seattle (SEA)
09:38 pm
San Jose (SJC)
01h 54min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Wednesday
07 January
07:49 pm
Seattle (SEA)
10:02 pm
San Jose (SJC)
02h 13min
Embraer 175
Embraer 175
Landed - On-time
Tuesday
06 January
07:44 pm
Seattle (SEA)
10:01 pm
San Jose (SJC)
02h 17min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Monday
05 January
07:50 pm
Seattle (SEA)
09:55 pm
San Jose (SJC)
02h 05min
Embraer 175 (E
Embraer 175 (E
Landed - On-time