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Flight UA1259

United Airlines flight UA1259

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Atlanta (ATL) to San Francisco (SFO)

Historically, this flight arrives 15+ minutes late 15% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.5% of the time.

On-time arrivals
85.4%
Less than 15 minutes late
Cancelled
0.5%
Of scheduled flights
Average delay when late
59 min
Flights arriving 15+ minutes late
Flights tracked
214
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 62%
  • Air traffic control & airport 22%
  • Late-arriving aircraft 15%
  • Extreme weather 1%
  • Security 0%

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

San Francisco (SFO) to Las Vegas (LAS)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.

On-time arrivals
84.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
62 min
Flights arriving 15+ minutes late
Flights tracked
135
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 47%
  • Late-arriving aircraft 41%
  • Airline (crew, maintenance, cleaning) 12%
  • Extreme weather 0%
  • Security 0%

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

San Francisco (SFO) to Houston (IAH)

Historically, this flight arrives 15+ minutes late 42% of the time, and when it is late the delay averages 41 minutes. It was cancelled 0.0% of the time.

On-time arrivals
57.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
41 min
Flights arriving 15+ minutes late
Flights tracked
103
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 60%
  • Airline (crew, maintenance, cleaning) 21%
  • Late-arriving aircraft 19%
  • Extreme weather 0%
  • Security 0%

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

Las Vegas (LAS) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 74 minutes. It was cancelled 0.0% of the time.

On-time arrivals
88.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
74 min
Flights arriving 15+ minutes late
Flights tracked
71
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 79%
  • Late-arriving aircraft 18%
  • Airline (crew, maintenance, cleaning) 3%
  • Extreme weather 0%
  • Security 0%

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

Houston (IAH) to Richmond (RIC)

Historically, this flight arrives 15+ minutes late 38% of the time, and when it is late the delay averages 69 minutes. It was cancelled 0.0% of the time.

On-time arrivals
62.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
69 min
Flights arriving 15+ minutes late
Flights tracked
45
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 36%
  • Late-arriving aircraft 35%
  • Air traffic control & airport 28%
  • Extreme weather 1%
  • Security 0%

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

Houston (IAH) to New Orleans (MSY)

Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 87 minutes. It was cancelled 0.0% of the time.

On-time arrivals
73.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
87 min
Flights arriving 15+ minutes late
Flights tracked
34
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 79%
  • Airline (crew, maintenance, cleaning) 14%
  • Air traffic control & airport 7%
  • Extreme weather 0%
  • Security 0%

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

San Francisco (SFO) to Portland (PDX)

Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.0% of the time.

On-time arrivals
75.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
62 min
Flights arriving 15+ minutes late
Flights tracked
32
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 66%
  • Airline (crew, maintenance, cleaning) 23%
  • Air traffic control & airport 11%
  • Extreme weather 0%
  • Security 0%

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

San Francisco (SFO) to Burbank (BUR)

Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 25 minutes. It was cancelled 0.0% of the time.

On-time arrivals
95.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
25 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

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

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

Houston (IAH) to Hartford (BDL)

Only 15 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
72 min
Flights arriving 15+ minutes late
Flights tracked
15
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 40%
  • Air traffic control & airport 31%
  • Late-arriving aircraft 29%
  • Extreme weather 0%
  • Security 0%

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

Seattle (SEA) to San Francisco (SFO)

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

On-time arrivals
92.9%
Less than 15 minutes late
Cancelled
6.7%
Of scheduled flights
Average delay when late
45 min
Flights arriving 15+ minutes late
Flights tracked
15
Scheduled flights in the period

What caused the delays

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

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

Houston (IAH) to Tucson (TUS)

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

Houston (IAH) to Omaha (OMA)

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 83.3% 30
October 2025 87.8% 41
November 2025 74.0% 77
December 2025 76.8% 57
January 2026 90.1% 71
February 2026 93.5% 62
March 2026 90.3% 62
April 2026 86.4% 59
May 2026 80.4% 46
June 2026 71.4% 71
July 2026 59.0% 61
August 2026 59.3% 55

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.