WN4840Southwest Airlines · DAL → SEA
live · 26m ago
Route confirmed Southwest Airlines

WN4840 DallasDAL · 07:55 SeattleSEA · 10:15

WN4840 by Southwest Airlines flies from Dallas (DAL) to Seattle (SEA).

Right nowNext departure today Operates daily
07:30

scheduled from DAL

Typical gate push+11 minmedian posted departure

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-07
+9 gate
10-30
+19 gate
10-29
+11 gate
10-28
+16 gate
10-27
+53 gate
10-26
+8 gate
10-24
+9 gate

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

The last 30 days

arrival outcome per operation

0 cancelled · 7 operations tracked

The route today

live boards
DALDallasModerate riskDAL delay board →
SEASeattleOn-time likelySEA delay board →
DAL→SEAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
43%Chance of 15+ min delay
0.7%Chance of cancellation
+14 minTypical airport delay in this weather

Conditions at DAL and SEA 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 Dallas

Forecast

Sun 8 Nov, local date

High20°Clikely 17°C to 23°C
Low13°Clikely 11°C to 15°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.

Tomorrow at Seattle

Forecast

Sat 7 Nov, local date

High16°Clikely 14°C to 17°C
Low10°Clikely 7°C to 12°C
  • 93% 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 Dallas to Seattle flights today

same route · Southwest Airlines
WN526departs 07:30
WN1543departs 08:00
WN3299departs 08:05
WN534departs 08:10

If WN4840 is cancelled, these are the other Southwest Airlines nonstop flights from Dallas to Seattle on the same day, with scheduled departure times in DAL 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 WN4840 actually runs

Pro Flight Search has tracked every published board update for WN4840 across the DAL and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs ~11 min late. Based on 7 confirmed departures · 5/7 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how WN4840 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
11-07DAL 07:55 08:04 (+9)SEA 10:15
10-30DAL 07:30 07:49 (+19)SEA 09:50
10-29DAL 07:30 07:41 (+11)SEA 09:50
10-28DAL 07:55 08:11 (+16)SEA 10:15
10-27DAL 07:55 08:48 (+53)SEA 10:15
10-26DAL 07:30 07:38 (+8)SEA 09:50
10-24DAL 07:55 08:04 (+9)SEA 10:15

Aircraft

Recent tails: N8958Q, N8828L, N8926Q, N8313F.

Board clocks recorded as DAL and SEA published them.

Planning around WN4840? 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: WN4840 Dallas to Seattle on-time performance, measured from the DAL and SEA airport boards.

Canonical URL
https://proflightsearch.com/flight/WN4840
How we measure this →