DL4090Delta Air Lines · SEA → BOI
live · 8m ago
Route confirmed Delta Air Lines

DL4090 SeattleSEA · 21:20 BoiseBOI · 23:59

DL4090 by Delta Air Lines flies from Seattle (SEA) to Boise (BOI) for the Mon, Nov 9 departure.

Right nowOn time · gate B5A
21:20

departs SEA · on schedule

The route today

live boards
SEASeattleModerate riskSEA delay board →
BOIBoiseOn-time likelyBOI delay board →
SEA→BOIevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
40%Chance of 15+ min delay
0.7%Chance of cancellation
+10 minTypical airport delay in this weather

Conditions at SEA and BOI 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

Tue 10 Nov, local date

High14°Clikely 12°C to 15°C
Low10°Clikely 8°C to 11°C
  • 97% 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 Boise

Forecast

Tue 10 Nov, local date

High19°Clikely 16°C to 21°C
Low6°Clikely 3°C to 8°C

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 Boise flights today

same route · Delta Air Lines
DL3750departs 07:15
DL3678departs 08:59
DL3959departs 12:47
DL4127departs 14:45
DL3688departs 16:02
DL3692departs 19:35

If DL4090 is cancelled, these are the other Delta Air Lines nonstop flights from Seattle to Boise 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 DL4090 actually runs

Pro Flight Search has tracked every published board update for DL4090 across the SEA and BOI boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 1 completed leg so far: landed +7 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how DL4090 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
11-08SEA 21:30BOI 23:59 00:06 (+7)

Aircraft

Recent tails: N302SY.

Board clocks recorded as SEA and BOI published them.

Planning around DL4090? 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: DL4090 Seattle to Boise on-time performance, measured from the SEA and BOI airport boards.

Canonical URL
https://proflightsearch.com/flight/DL4090
How we measure this →