DL399 · DAL399

DAL399 over the last 30 days

As of 2026-10-05

DAL399 is operated by Delta Air Lines on the route Boston Logan International Airport (BOS/KBOS) → Hartsfield Jackson Atlanta International Airport (ATL/KATL). It usually takes off around 20:56 UTC (16:56 local time, BOS). It usually lands around 23:17 UTC (19:17 local time, ATL). Most frequent aircraft type: AIRBUS A-321 (A321).

Days with an observed flight (last 30 days)

4/30

Days of the week with an observed flight

Mon, Thu, Fri, Sun

Typical take-off

20:56 UTC · 16:56 local time (BOS)

Typical landing

23:17 UTC · 19:17 local time (ATL)

Typical time airborne

136 min

Median departure deviation from the usual time on this route

+3 min

Departures within 15 minutes of the usual time

73 %

Departures measured

178

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• AIRBUS A-321 (A321) — Number of flights: 4

Related flights on this route

• All flights KBOS – KATL