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Delta Air Lines

Is DL821 delayed?

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

Arrived

25 min late

Official source · Updated

Departure

Atlanta

ATL

Scheduled

Sep 9

Arrival

Boston

BOS

Actual

Scheduled 21:01

Sep 9

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Route overview: Atlanta → BostonATLBOS
Route overview

Recent arrivals

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

  • ATL → BOS

    33 min late

  • ATL → BOS

    51 min late

  • ATL → BOS

    220 min late

  • ATL → BOS

    10 min late

  • ATL → BOS

    111 min late
Flight history and details

Aug 24, 2026 — Sep 23, 2026

Observed arrivals
27
Arrivals over 15 minutes late
12
Observed cancellations
0
Observed occurrences
28

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

DL821 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 22, 2026ArrivedAtlantaBoston
33
Sep 21, 2026ArrivedAtlantaBoston
51
Sep 20, 2026ArrivedAtlantaBoston
220
Sep 19, 2026ArrivedAtlantaBoston
10
Sep 18, 2026ArrivedAtlantaBoston
111
Sep 17, 2026ArrivedAtlantaBoston
136
Sep 16, 2026ArrivedAtlantaBoston
43
Sep 15, 2026ArrivedAtlantaBoston
13
Sep 14, 2026ArrivedAtlantaBoston
-5
Sep 13, 2026ArrivedAtlantaBoston
27
Sep 12, 2026ArrivedAtlantaBoston
21
Sep 11, 2026ArrivedAtlantaBoston
189
Sep 10, 2026ArrivedAtlantaBoston
2
Sep 9, 2026ArrivedAtlantaBoston
25
Sep 8, 2026ArrivedAtlantaBoston
-5
Sep 6, 2026ArrivedAtlantaBoston
222
Sep 5, 2026ArrivedAtlantaBoston
11
Sep 4, 2026ArrivedAtlantaBoston
-4
Sep 3, 2026ArrivedAtlantaBoston
84
Sep 2, 2026ArrivedAtlantaBoston
-35
Sep 1, 2026ArrivedAtlantaBoston
9
Aug 31, 2026ArrivedAtlantaBoston
-21
Aug 29, 2026ArrivedAtlantaBoston
-31
Aug 28, 2026ArrivedAtlantaBoston
-11
Aug 27, 2026ArrivedAtlantaBoston
-7
Aug 25, 2026ArrivedAtlantaBoston
-18
Aug 24, 2026ArrivedAtlantaBoston
5

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