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Flight AA1239

American Airlines flight AA1239

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Looking for AA1239 in the airโ€ฆ

Boston (BOS) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 149 minutes. It was cancelled 1.2% of the time.

On-time arrivals
91.4%
Less than 15 minutes late
Cancelled
1.2%
Of scheduled flights
Average delay when late
149 min
Flights arriving 15+ minutes late
Flights tracked
165
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 36%
  • Late-arriving aircraft 31%
  • Air traffic control & airport 30%
  • Extreme weather 3%
  • Security 0%

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

Houston (IAH) to Dallas-Fort Worth (DFW)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 100 minutes. It was cancelled 0.0% of the time.

On-time arrivals
84.1%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
100 min
Flights arriving 15+ minutes late
Flights tracked
44
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 56%
  • Late-arriving aircraft 38%
  • Air traffic control & airport 6%
  • Extreme weather 0%
  • Security 0%

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

Los Angeles (LAX) to Boston (BOS)

Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 99 minutes. It was cancelled 5.6% of the time.

On-time arrivals
64.7%
Less than 15 minutes late
Cancelled
5.6%
Of scheduled flights
Average delay when late
99 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 64%
  • Airline (crew, maintenance, cleaning) 19%
  • Air traffic control & airport 16%
  • Extreme weather 0%
  • Security 0%

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

San Antonio (SAT) to Dallas-Fort Worth (DFW)

Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 124 minutes. It was cancelled 0.0% of the time.

On-time arrivals
93.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
124 min
Flights arriving 15+ minutes late
Flights tracked
30
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 70%
  • Extreme weather 30%
  • Airline (crew, maintenance, cleaning) 0%
  • Air traffic control & airport 0%
  • Security 0%

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

Miami (MIA) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.

On-time arrivals
90.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
62 min
Flights arriving 15+ minutes late
Flights tracked
22
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 86%
  • Air traffic control & airport 14%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Dallas-Fort Worth (DFW)

Only 19 flights on record, which is too few for reliable odds.

On-time arrivals
89.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
67 min
Flights arriving 15+ minutes late
Flights tracked
19
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 60%
  • Late-arriving aircraft 40%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Phoenix (PHX) to Dallas-Fort Worth (DFW)

Only 19 flights on record, which is too few for reliable odds.

On-time arrivals
84.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
23 min
Flights arriving 15+ minutes late
Flights tracked
19
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 100%
  • Airline (crew, maintenance, cleaning) 0%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Charlotte (CLT) to Cleveland (CLE)

Only 15 flights on record, which is too few for reliable odds.

On-time arrivals
86.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
70 min
Flights arriving 15+ minutes late
Flights tracked
15
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 95%
  • Airline (crew, maintenance, cleaning) 5%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Dallas-Fort Worth (DFW) to Oklahoma City (OKC)

Only 10 flights on record, which is too few for reliable odds.

On-time arrivals
66.7%
Less than 15 minutes late
Cancelled
10.0%
Of scheduled flights
Average delay when late
98 min
Flights arriving 15+ minutes late
Flights tracked
10
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 57%
  • Airline (crew, maintenance, cleaning) 39%
  • Extreme weather 2%
  • Air traffic control & airport 1%
  • Security 0%

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

Oklahoma City (OKC) to Dallas-Fort Worth (DFW)

Only 10 flights on record, which is too few for reliable odds.

On-time arrivals
44.4%
Less than 15 minutes late
Cancelled
10.0%
Of scheduled flights
Average delay when late
67 min
Flights arriving 15+ minutes late
Flights tracked
10
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 79%
  • Air traffic control & airport 16%
  • Airline (crew, maintenance, cleaning) 5%
  • Extreme weather 0%
  • Security 0%

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

In the news

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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 90.0% 30
October 2025 87.1% 31
November 2025 79.4% 36
December 2025 75.8% 33
January 2026 75.0% 30
February 2026 73.1% 26
March 2026 96.8% 31
April 2026 80.0% 30
May 2026 90.3% 31
June 2026 96.7% 30
July 2026 96.6% 31
August 2026 86.7% 31

Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 โ€“ 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.