Skip to content
FriendlySkies Review
Menu

Flight DL644

Delta Air Lines flight DL644

Read Delta Air Lines reviews →

Looking for DL644 in the air…

Houston (IAH) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 113 minutes. It was cancelled 1.4% of the time.

On-time arrivals
87.1%
Less than 15 minutes late
Cancelled
1.4%
Of scheduled flights
Average delay when late
113 min
Flights arriving 15+ minutes late
Flights tracked
72
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 78%
  • Late-arriving aircraft 13%
  • Air traffic control & airport 9%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Miami (MIA) to Detroit (DTW)

Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 133 minutes. It was cancelled 0.0% of the time.

On-time arrivals
81.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
133 min
Flights arriving 15+ minutes late
Flights tracked
33
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 81%
  • Airline (crew, maintenance, cleaning) 10%
  • Air traffic control & airport 9%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Boston (BOS) to New York (LGA)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 87 minutes. It was cancelled 3.3% of the time.

On-time arrivals
89.7%
Less than 15 minutes late
Cancelled
3.3%
Of scheduled flights
Average delay when late
87 min
Flights arriving 15+ minutes late
Flights tracked
30
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 66%
  • Airline (crew, maintenance, cleaning) 30%
  • Air traffic control & airport 4%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Nashville (BNA) to Salt Lake City (SLC)

Only 13 flights on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
7.7%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
13
Scheduled flights in the period

Chicago (ORD) to New York (JFK)

Only 5 flights on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
20.0%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
5
Scheduled flights in the period

In the news

More headlines →

Headlines found by Google News; stories open on the publisher's site.

On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 88.0% 26
October 2025 100.0% 4
November 2025 100.0% 12
December 2025 100.0% 1
January 2026 82.6% 23
February 2026 80.0% 10
March 2026 100.0% 3
April 2026 100.0% 2
June 2026 90.0% 20
July 2026 87.5% 26
August 2026 84.6% 26

Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data

Latest airport & airline headlines

More headlines →

Headlines found by Google News; stories open on the publisher's site.