DL639 · DAL639

DAL639 over the last 30 days

As of 2026-10-27

DAL639 is operated by Delta Air Lines on the route Los Angeles International Airport (LAX/KLAX) → Boston Logan International Airport (BOS/KBOS). It usually takes off around 14:03 UTC (07:03 local time, LAX). It usually lands around 19:03 UTC (15:03 local time, BOS). Most frequent aircraft type: BOEING 757-200 (B752).

Days with an observed flight (last 30 days)

30/30

Days of the week with an observed flight

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

Typical take-off

14:03 UTC · 07:03 local time (LAX)

Typical landing

19:03 UTC · 15:03 local time (BOS)

Typical time airborne

301 min

Median departure deviation from the usual time on this route

+5 min

Departures within 15 minutes of the usual time

69 %

Departures measured

77

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)

• BOEING 757-200 (B752) — Number of flights: 50

Aircraft in the last 7 days

• N717TW · BOEING 757-200 2026-10-27
• N710TW · BOEING 757-200 2026-10-26
• N711ZX · BOEING 757-200 2026-10-25
• N709TW · BOEING 757-200 2026-10-24

Related flights on this route

• All flights KLAX – KBOS