Flight AA1378

American Airlines flight AA1378

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Looking for AA1378 in the air…

Boise (BOI) to Dallas-Fort Worth (DFW)

Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 98 minutes. It was cancelled 1.1% of the time.

On-time arrivals

80.2%

Less than 15 minutes late

Cancelled

1.1%

Of scheduled flights

Average delay when late

98 min

Flights arriving 15+ minutes late

Flights tracked

87

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 78%
• Air traffic control & airport 13%
• Airline (crew, maintenance, cleaning) 8%
• Extreme weather 2%
• Security 0%

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

Dallas-Fort Worth (DFW) to Boise (BOI)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 70 minutes. It was cancelled 0.0% of the time.

On-time arrivals

83.9%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

70 min

Flights arriving 15+ minutes late

Flights tracked

87

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 49%
• Airline (crew, maintenance, cleaning) 36%
• Air traffic control & airport 15%
• Extreme weather 0%
• Security 0%

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

Kansas City (MCI) to Philadelphia (PHL)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 128 minutes. It was cancelled 0.0% of the time.

On-time arrivals

90.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

128 min

Flights arriving 15+ minutes late

Flights tracked

20

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 59%
• Late-arriving aircraft 41%
• Airline (crew, maintenance, cleaning) 0%
• Extreme weather 0%
• Security 0%

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

Philadelphia (PHL) to Kansas City (MCI)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 77 minutes. It was cancelled 0.0% of the time.

On-time arrivals

90.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

77 min

Flights arriving 15+ minutes late

Flights tracked

20

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 92%
• Airline (crew, maintenance, cleaning) 8%
• Air traffic control & airport 0%
• Extreme weather 0%
• Security 0%

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

Phoenix (PHX) to Tucson (TUS)

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

On-time arrivals

70.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

86 min

Flights arriving 15+ minutes late

Flights tracked

10

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 70%
• Airline (crew, maintenance, cleaning) 18%
• Air traffic control & airport 12%
• Extreme weather 0%
• Security 0%

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

Tucson (TUS) to Phoenix (PHX)

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

On-time arrivals

80.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

87 min

Flights arriving 15+ minutes late

Flights tracked

10

Scheduled flights in the period

What caused the delays

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

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

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

Only 6 flights on record, which is too few for reliable odds.

On-time arrivals

83.3%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

39 min

Flights arriving 15+ minutes late

Flights tracked

6

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).

Jacksonville (JAX) to Miami (MIA)

Only 3 flights 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

3

Scheduled flights in the period

Miami (MIA) to Jacksonville (JAX)

Only 3 flights 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

3

Scheduled flights in the period

Dallas-Fort Worth (DFW) to Kansas City (MCI)

Only 2 flights 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

2

Scheduled flights in the period

Miami (MIA) to Grand Rapids (GRR)

Only 2 flights 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

2

Scheduled flights in the period

Las Vegas (LAS) to Miami (MIA)

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

Miami (MIA) to Las Vegas (LAS)

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

Miami (MIA) to Louisville (SDF)

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

Louisville (SDF) to Miami (MIA)

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

On-time arrivals

0.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

59 min

Flights arriving 15+ minutes late

Flights tracked

1

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 69%
• Air traffic control & airport 31%
• Late-arriving aircraft 0%
• Extreme weather 0%
• Security 0%

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

Tulsa (TUL) to Dallas-Fort Worth (DFW)

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

Sep 2025 Aug 2026

Show as table

Month	On time	Flights
September 2025	74.6%	60
October 2025	82.8%	58
November 2025	50.0%	2
December 2025	100.0%	6
January 2026	100.0%	2
February 2026	100.0%	6
March 2026	50.0%	2
May 2026	80.0%	15
June 2026	96.2%	26
July 2026	72.7%	22
August 2026	91.1%	56

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