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Flight UA1399

United Airlines flight UA1399

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Newark (EWR) to Kansas City (MCI)

Historically, this flight arrives 15+ minutes late 39% of the time, and when it is late the delay averages 110 minutes. It was cancelled 3.9% of the time.

On-time arrivals
60.8%
Less than 15 minutes late
Cancelled
3.9%
Of scheduled flights
Average delay when late
110 min
Flights arriving 15+ minutes late
Flights tracked
102
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 51%
  • Air traffic control & airport 21%
  • Airline (crew, maintenance, cleaning) 17%
  • Extreme weather 11%
  • Security 0%

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

Madison (MSN) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 77 minutes. It was cancelled 3.4% of the time.

On-time arrivals
83.9%
Less than 15 minutes late
Cancelled
3.4%
Of scheduled flights
Average delay when late
77 min
Flights arriving 15+ minutes late
Flights tracked
58
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 82%
  • Extreme weather 13%
  • Airline (crew, maintenance, cleaning) 5%
  • Late-arriving aircraft 0%
  • Security 0%

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

Newark (EWR) to Raleigh/Durham (RDU)

Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 56 minutes. It was cancelled 0.0% of the time.

On-time arrivals
83.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
56 min
Flights arriving 15+ minutes late
Flights tracked
53
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 51%
  • Airline (crew, maintenance, cleaning) 43%
  • Air traffic control & airport 7%
  • Extreme weather 0%
  • Security 0%

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

Phoenix (PHX) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 109 minutes. It was cancelled 1.9% of the time.

On-time arrivals
82.7%
Less than 15 minutes late
Cancelled
1.9%
Of scheduled flights
Average delay when late
109 min
Flights arriving 15+ minutes late
Flights tracked
53
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 96%
  • Airline (crew, maintenance, cleaning) 4%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Houston (IAH) to Wichita (ICT)

Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 49 minutes. It was cancelled 0.0% of the time.

On-time arrivals
66.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
49 min
Flights arriving 15+ minutes late
Flights tracked
47
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 51%
  • Air traffic control & airport 35%
  • Airline (crew, maintenance, cleaning) 14%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Tampa (TPA)

Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 80 minutes. It was cancelled 2.3% of the time.

On-time arrivals
76.2%
Less than 15 minutes late
Cancelled
2.3%
Of scheduled flights
Average delay when late
80 min
Flights arriving 15+ minutes late
Flights tracked
43
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 51%
  • Airline (crew, maintenance, cleaning) 23%
  • Air traffic control & airport 23%
  • Extreme weather 3%
  • Security 0%

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

Dulles (IAD) to Burlington (BTV)

Historically, this flight arrives 15+ minutes late 48% of the time, and when it is late the delay averages 64 minutes. It was cancelled 4.2% of the time.

On-time arrivals
52.2%
Less than 15 minutes late
Cancelled
4.2%
Of scheduled flights
Average delay when late
64 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 66%
  • Air traffic control & airport 24%
  • Extreme weather 5%
  • Late-arriving aircraft 5%
  • Security 0%

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

Phoenix (PHX) to Newark (EWR)

Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 71 minutes. It was cancelled 0.0% of the time.

On-time arrivals
94.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
71 min
Flights arriving 15+ minutes late
Flights tracked
20
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 95%
  • Airline (crew, maintenance, cleaning) 5%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

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

Reno (RNO) to San Francisco (SFO)

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 63.6% 22
October 2025 68.8% 32
November 2025 74.5% 53
December 2025 87.5% 32
January 2026 73.3% 31
February 2026 96.3% 28
March 2026 63.3% 31
April 2026 86.7% 30
May 2026 88.0% 51
June 2026 62.1% 30
July 2026 41.4% 30
August 2026 64.3% 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.