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Delta Air Lines

Is DL821 delayed?

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

Arrived

21 min early

Updated

Departure

Atlanta

ATL

Actual

Scheduled 18:45

Aug 31

Arrival

Boston

BOS

Actual

Scheduled 21:30

Aug 31

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
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

    43 min late

  • ATL → BOS

    13 min late

  • ATL → BOS

    5 min early

  • ATL → BOS

    27 min late

  • ATL → BOS

    21 min late
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
22
Arrivals over 15 minutes late
7
Observed cancellations
0
Observed occurrences
24

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 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
Aug 22, 2026ArrivedAtlantaBoston
-4

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