DL870Delta Air Lines · SEA → DFW
live · 7m ago
Route confirmed Delta Air Lines

DL870 SeattleSEA · 17:40 Dallas-Fort WorthDFW · 23:44

DL870 by Delta Air Lines flies from Seattle (SEA) to Dallas-Fort Worth (DFW) for the Thu, Sep 17 departure.

Right nowIn the air to Dallas-Fort Worth
23:38

estimated arrival at DFW · local time · ~87 min from now

LivePosition · updated 7m ago
SEA704 mi · ~87 min leftDFW
37,000 ftAltitudecruising
517 mphSpeed449 kt
133°Direction

Live position · flown path, last 2h 8m

Typical arrival+17 minmedian over 2 operations

The route today

live boards
SEASeattleModerate riskSEA delay board →
DFWDallas-Fort WorthOn-time likelyDFW delay board →
SEA→DFWevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
37%Chance of 15+ min delay
0.8%Chance of cancellation
+7 minAvg hub delay right now

Conditions at SEA and DFW 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 Dallas-Fort Worth flights today

same route · Delta Air Lines
DL803departs 09:15

If DL870 is cancelled, this is the other Delta Air Lines nonstop flight from Seattle to Dallas-Fort Worth 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 DL870 actually runs

Pro Flight Search has tracked every published board update for DL870 across the SEA and DFW boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at SEA and DFW.

The verdict above is that record speaking, so it reflects how DL870 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
09-17SEA 17:40DFW 23:44 23:38 (−6)
09-16SEA 17:40DFW 23:44 00:01 (+17)

Board clocks recorded as SEA and DFW published them.

Planning around DL870? 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 — DL870 Seattle to Dallas-Fort Worth on-time performance, measured from the SEA and DFW airport boards.

Canonical URL
https://proflightsearch.com/flight/DL870
How we measure this →