DL438 · DAL438

DAL438 over the last 30 days

As of 2026-10-29

DAL438 is operated by Delta Air Lines on the route Seattle–Tacoma International Airport (SEA/KSEA) → Boston Logan International Airport (BOS/KBOS). It usually takes off around 19:05 UTC (12:05 local time, SEA). It usually lands around 23:42 UTC (19:42 local time, BOS). Most frequent aircraft type: AIRBUS A-321neo (A21N).

Days with an observed flight (last 30 days)

29/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

19:05 UTC · 12:05 local time (SEA)

Typical landing

23:42 UTC · 19:42 local time (BOS)

Median departure deviation from the usual time on this route

+2 min

Departures within 15 minutes of the usual time

75 %

Departures measured

79

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-321neo (A21N) — Number of flights: 58

Aircraft in the last 7 days

• N615DN · AIRBUS A-321neo 2026-10-29
• N527DE · AIRBUS A-321neo 2026-10-28
• N507DZ · AIRBUS A-321neo 2026-10-27
• N521DT · AIRBUS A-321neo 2026-10-26
• N518DQ · AIRBUS A-321neo 2026-10-26
• N605DN · AIRBUS A-321neo 2026-10-25

Related flights on this route

• All flights KSEA – KBOS