Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

DELTA · FLIGHT DL 2639 SCHEDULED · TYPICAL SCHEDULE

Wednesday, September 30 Yesterday

DL 2639 · JFK → BOS

departs 8:59 PM ET · arrives 10:44 PM ET

Forecast issued Wed 10:00 PM ET · 1h after departure

DL 2639 isn’t flying JFK → BOS on Wed, Sep 30

This listing came from a typical schedule. According to the FAA, DL 2639 flies these legs that day:

JFK → BOS · 9:45 PM · scheduled
JFK → BOS · 10:09 PM · scheduled