DL3997Delta Air Lines · SEA → PDX
live · 11m ago
Route confirmed Delta Air Lines

DL3997 SeattleSEA · 20:55 PortlandPDX · 21:56

DL3997 by Delta Air Lines flies from Seattle (SEA) to Portland (PDX) for the Sun, Nov 8 departure.

Right nowOn time · gate B4
20:55

departs SEA · on schedule

Typical arrival−3 minmedian over 4 operations

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
10-30
−1 arrival
10-29
+0 arrival
10-28
−5 arrival
10-27
−20 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
SEASeattleHigh riskSEA delay board →
PDXPortlandModerate riskPDX delay board →
SEA→PDXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
33%Chance of 15+ min delay
1.2%Chance of cancellation
+4 minTypical airport delay in this weather

Conditions at SEA and PDX are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →

Tomorrow at Seattle

Forecast

Mon 9 Nov, local date

High13°Clikely 12°C to 15°C
Low7°Clikely 5°C to 10°C
  • 88% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Portland

Forecast

Mon 9 Nov, local date

High14°Clikely 12°C to 16°C
Low10°Clikely 7°C to 12°C
  • 90% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

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 Portland flights today

same route · Delta Air Lines
DL3953departs 07:32
DL3818departs 09:36
DL3802departs 10:37
DL4062departs 13:45
DL3918departs 16:00
DL4609departs 17:30

If DL3997 is cancelled, these are the other Delta Air Lines nonstop flights from Seattle to Portland on the same day, with scheduled departure times in SEA local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How DL3997 actually runs

Pro Flight Search has tracked every published board update for DL3997 across the SEA and PDX boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 4 confirmed landings · 4/4 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how DL3997 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-30SEA 20:55PDX 21:56 21:55 (−1)
10-29SEA 20:55PDX 21:56 (+0)
10-28SEA 20:55PDX 21:56 21:51 (−5)
10-27SEA 20:55PDX 21:56 21:36 (−20)

Board clocks recorded as SEA and PDX published them.

Planning around DL3997? 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: DL3997 Seattle to Portland on-time performance, measured from the SEA and PDX airport boards.

Canonical URL
https://proflightsearch.com/flight/DL3997
How we measure this →