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Flight UA1256

United Airlines flight UA1256

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Looking for UA1256 in the air…

  • Advisory Coastal Flood Advisory OAK, SFO, SQL, STS

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Charlotte (CLT) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 83 minutes. It was cancelled 2.9% of the time.

On-time arrivals
94.1%
Less than 15 minutes late
Cancelled
2.9%
Of scheduled flights
Average delay when late
83 min
Flights arriving 15+ minutes late
Flights tracked
208
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 88%
  • Air traffic control & airport 12%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Knoxville/Maryville (TYS) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 161 minutes. It was cancelled 0.0% of the time.

On-time arrivals
94.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
161 min
Flights arriving 15+ minutes late
Flights tracked
123
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).

Dulles (IAD) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 68 minutes. It was cancelled 0.0% of the time.

On-time arrivals
93.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
68 min
Flights arriving 15+ minutes late
Flights tracked
32
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 82%
  • Air traffic control & airport 18%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to San Jose (SJC)

Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 0.0% of the time.

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
21
Scheduled flights in the period

Atlanta (ATL) to Newark (EWR)

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

San Francisco (SFO) to Reno (RNO)

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 96.7% 30
October 2025 96.7% 31
November 2025 96.7% 30
December 2025 93.5% 31
January 2026 96.4% 31
February 2026 92.3% 28
March 2026 83.9% 31
April 2026 96.7% 30
May 2026 93.5% 31
June 2026 96.7% 30
July 2026 90.3% 31
August 2026 98.1% 52

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.