Flight OH5121

Flight OH5121

Dallas-Fort Worth (DFW) to Huntsville (HSV)

Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 111 minutes. It was cancelled 3.3% of the time.

On-time arrivals

73.5%

Less than 15 minutes late

Cancelled

3.3%

Of scheduled flights

Average delay when late

111 min

Flights arriving 15+ minutes late

Flights tracked

153

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 75%
• Airline (crew, maintenance, cleaning) 19%
• Air traffic control & airport 6%
• Extreme weather 1%
• Security 0%

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

Sarasota/Bradenton (SRQ) to Philadelphia (PHL)

Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 117 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

117 min

Flights arriving 15+ minutes late

Flights tracked

44

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 60%
• Extreme weather 33%
• Airline (crew, maintenance, cleaning) 4%
• Air traffic control & airport 3%
• Security 0%

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

Philadelphia (PHL) to Hartford (BDL)

Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 58 minutes. It was cancelled 0.0% of the time.

On-time arrivals

70.4%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

58 min

Flights arriving 15+ minutes late

Flights tracked

27

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 81%
• Airline (crew, maintenance, cleaning) 16%
• Air traffic control & airport 2%
• Extreme weather 0%
• Security 0%

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

Philadelphia (PHL) to Raleigh/Durham (RDU)

Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 232 minutes. It was cancelled 22.2% of the time.

On-time arrivals

66.7%

Less than 15 minutes late

Cancelled

22.2%

Of scheduled flights

Average delay when late

232 min

Flights arriving 15+ minutes late

Flights tracked

27

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 54%
• Extreme weather 18%
• Air traffic control & airport 16%
• Late-arriving aircraft 12%
• Security 0%

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

Raleigh/Durham (RDU) to Philadelphia (PHL)

Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 202 minutes. It was cancelled 33.3% of the time.

On-time arrivals

66.7%

Less than 15 minutes late

Cancelled

33.3%

Of scheduled flights

Average delay when late

202 min

Flights arriving 15+ minutes late

Flights tracked

27

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 93%
• Air traffic control & airport 5%
• Extreme weather 1%
• Airline (crew, maintenance, cleaning) 1%
• Security 0%

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

Detroit (DTW) to Philadelphia (PHL)

Only 10 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

10

Scheduled flights in the period

Philadelphia (PHL) to Detroit (DTW)

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

20 min

Flights arriving 15+ minutes late

Flights tracked

10

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 62%
• Late-arriving aircraft 38%
• Airline (crew, maintenance, cleaning) 0%
• Extreme weather 0%
• Security 0%

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

Greensboro (GSO) to Charlotte (CLT)

Only 9 flights on record, which is too few for reliable odds.

On-time arrivals

66.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

97 min

Flights arriving 15+ minutes late

Flights tracked

9

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 94%
• Air traffic control & airport 6%
• Late-arriving aircraft 0%
• Extreme weather 0%
• Security 0%

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

Hartford (BDL) to Philadelphia (PHL)

Only 8 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

8

Scheduled flights in the period

Washington (DCA) to Indianapolis (IND)

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

Indianapolis (IND) to Washington (DCA)

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

Sep 2025 Aug 2026

Show as table

Month	On time	Flights
September 2025	87.5%	16
October 2025	79.4%	34
November 2025	72.4%	29
December 2025	60.0%	30
January 2026	81.5%	30
February 2026	85.7%	28
March 2026	72.4%	31
April 2026	72.4%	30
May 2026	86.4%	22
June 2026	100.0%	5
July 2026	70.0%	10
August 2026	66.7%	54

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