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Delta Air Lines

Is DL409 delayed?

Service date: · Scheduled departure date (America/Los_Angeles)

Arrived

14 min early

Updated

Departure

Seattle

SEA

Actual

Scheduled 21:45

Aug 29

Arrival

Atlanta

ATL

Actual

Scheduled 05:38

Aug 30

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Route overview: Seattle → AtlantaSEAATL
Route overview

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • ONT → ATL

    15 min late

  • ONT → ATL

    60 min late

  • ONT → ATL

    <1 min late

  • ONT → ATL

    227 min late

  • ONT → ATL

    6 min late
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
19
Arrivals over 15 minutes late
3
Observed cancellations
0
Observed occurrences
21

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

DL409 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedOntarioAtlanta
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15
Sep 14, 2026ArrivedOntarioAtlanta
60
Sep 12, 2026ArrivedOntarioAtlanta
0
Sep 10, 2026ArrivedOntarioAtlanta
227
Sep 9, 2026ArrivedOntarioAtlanta
6
Sep 4, 2026ArrivedSeattleAtlanta
-30
Sep 3, 2026ArrivedSeattleAtlanta
-17
Aug 30, 2026ArrivedSeattleAtlanta
9
Aug 29, 2026ArrivedSeattleAtlanta
-14
Aug 28, 2026ArrivedSeattleAtlanta
-23
Aug 27, 2026ArrivedSeattleAtlanta
-31
Aug 26, 2026ArrivedSeattleAtlanta
-17
Aug 25, 2026ArrivedSeattleAtlanta
-30
Aug 24, 2026ArrivedSeattleAtlanta
-26
Aug 23, 2026ArrivedSeattleAtlanta
-35
Aug 22, 2026ArrivedSeattleAtlanta
-28
Aug 21, 2026ArrivedSeattleAtlanta
-20
Aug 20, 2026ArrivedSeattleAtlanta
-35
Aug 18, 2026ArrivedSeattleAtlanta
-20

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