DL3956Delta Air Lines · SEA → SJC
live · 9m ago
Route confirmed Delta Air Lines

DL3956 SeattleSEA · 20:49 San JoseSJC · 23:00

DL3956 by Delta Air Lines flies from Seattle (SEA) to San Jose (SJC) for the Fri, Oct 16 departure.

Right nowOn time · gate A6
20:49

departs SEA · on schedule

Typical arrival−12 minmedian over 3 operations

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
10-16
−12 arrival
10-15
−12 arrival
10-14
−25 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
SEASeattleModerate riskSEA delay board →
SJCSan JoseOn-time likelySJC delay board →
SEA→SJCevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
41%Chance of 15+ min delay
1.2%Chance of cancellation
+8 minAvg hub delay right now

Conditions at SEA and SJC are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Seattle to San Jose flights today

same route · Delta Air Lines
DL167departs 05:45
DL3736departs 08:25
DL3789departs 11:30
DL168departs 12:02
DL3897departs 14:45
DL4100departs 16:30

If DL3956 is cancelled, these are the other Delta Air Lines nonstop flights from Seattle to San Jose on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How DL3956 actually runs

Pro Flight Search has tracked every published board update for DL3956 across the SEA and SJC boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -8 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how DL3956 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-16SEA 20:49SJC 23:00 22:48 (−12)
10-15SEA 20:49SJC 23:00 22:48 (−12)
10-14SEA 20:49SJC 23:00 22:35 (−25)
10-13SEA 20:49SJC

Aircraft

Recent tails: N284SY, N298SY.

Board clocks recorded as SEA and SJC published them.

Planning around DL3956? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — DL3956 Seattle to San Jose on-time performance, measured from the SEA and SJC airport boards.

Canonical URL
https://proflightsearch.com/flight/DL3956
How we measure this →