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Flight DL1139

Delta Air Lines flight DL1139

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Looking for DL1139 in the air…

Atlanta (ATL) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 43% of the time, and when it is late the delay averages 81 minutes. It was cancelled 1.0% of the time.

On-time arrivals
56.5%
Less than 15 minutes late
Cancelled
1.0%
Of scheduled flights
Average delay when late
81 min
Flights arriving 15+ minutes late
Flights tracked
194
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 41%
  • Air traffic control & airport 39%
  • Extreme weather 14%
  • Late-arriving aircraft 6%
  • Security 0%

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

Atlanta (ATL) to Columbia (CAE)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 34 minutes. It was cancelled 0.0% of the time.

On-time arrivals
89.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
34 min
Flights arriving 15+ minutes late
Flights tracked
29
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 78%
  • Air traffic control & airport 22%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Columbia (CAE) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 284 minutes. It was cancelled 0.0% of the time.

On-time arrivals
89.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
284 min
Flights arriving 15+ minutes late
Flights tracked
29
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 76%
  • Extreme weather 24%
  • Late-arriving aircraft 0%
  • Air traffic control & airport 0%
  • Security 0%

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

Seattle (SEA) to Spokane (GEG)

Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 77 minutes. It was cancelled 4.2% of the time.

On-time arrivals
82.6%
Less than 15 minutes late
Cancelled
4.2%
Of scheduled flights
Average delay when late
77 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 52%
  • Late-arriving aircraft 33%
  • Air traffic control & airport 15%
  • Extreme weather 0%
  • Security 0%

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

Miami (MIA) to New York (LGA)

Only 1 flight on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
1
Scheduled flights in the period

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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 83.3% 30
October 2025 66.7% 18
November 2025 63.6% 22
December 2025 61.3% 31
January 2026 54.5% 11
February 2026 77.3% 23
March 2026 40.7% 28
April 2026 42.9% 23
May 2026 34.6% 26
June 2026 83.3% 6
July 2026 100.0% 1
August 2026 89.7% 58

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

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