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Flight UA451

United Airlines flight UA451

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Looking for UA451 in the air…

Chicago (ORD) to Columbus (CMH)

Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.

On-time arrivals
86.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
62 min
Flights arriving 15+ minutes late
Flights tracked
144
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 45%
  • Air traffic control & airport 27%
  • Late-arriving aircraft 18%
  • Extreme weather 10%
  • Security 0%

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

Denver (DEN) to Rapid City (RAP)

Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 60 minutes. It was cancelled 0.0% of the time.

On-time arrivals
87.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
60 min
Flights arriving 15+ minutes late
Flights tracked
82
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 54%
  • Late-arriving aircraft 25%
  • Airline (crew, maintenance, cleaning) 22%
  • Extreme weather 0%
  • Security 0%

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

Nashville (BNA) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 145 minutes. It was cancelled 0.0% of the time.

On-time arrivals
87.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
145 min
Flights arriving 15+ minutes late
Flights tracked
47
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 99%
  • Air traffic control & airport 1%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Boise (BOI) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 32% of the time, and when it is late the delay averages 115 minutes. It was cancelled 2.9% of the time.

On-time arrivals
67.6%
Less than 15 minutes late
Cancelled
2.9%
Of scheduled flights
Average delay when late
115 min
Flights arriving 15+ minutes late
Flights tracked
35
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 52%
  • Late-arriving aircraft 47%
  • Airline (crew, maintenance, cleaning) 1%
  • Extreme weather 0%
  • Security 0%

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

Newark (EWR) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 104 minutes. It was cancelled 0.0% of the time.

On-time arrivals
96.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
104 min
Flights arriving 15+ minutes late
Flights tracked
31
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).

Denver (DEN) to Fort Myers (RSW)

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

On-time arrivals
73.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
45 min
Flights arriving 15+ minutes late
Flights tracked
19
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 66%
  • Air traffic control & airport 20%
  • Airline (crew, maintenance, cleaning) 14%
  • Extreme weather 0%
  • Security 0%

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

Detroit (DTW) to Chicago (ORD)

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

Spokane (GEG) to Chicago (ORD)

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

Dulles (IAD) to Jackson (JAC)

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

Houston (IAH) to Columbus (CMH)

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

Chicago (ORD) to Detroit (DTW)

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
75 min
Flights arriving 15+ minutes late
Flights tracked
1
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 Orlando (MCO)

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

In the news

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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 93.3% 30
October 2025 90.3% 31
November 2025 90.0% 30
December 2025 66.7% 30
January 2026 90.3% 31
February 2026 92.9% 28
March 2026 80.6% 31
April 2026 96.7% 30
May 2026 74.2% 31
June 2026 75.9% 30
July 2026 90.3% 31
August 2026 83.9% 31

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.