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Flight UA1599

United Airlines flight UA1599

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Looking for UA1599 in the air…

Denver (DEN) to Houston (IAH)

Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 77 minutes. It was cancelled 0.5% of the time.

On-time arrivals
77.8%
Less than 15 minutes late
Cancelled
0.5%
Of scheduled flights
Average delay when late
77 min
Flights arriving 15+ minutes late
Flights tracked
201
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 45%
  • Air traffic control & airport 33%
  • Airline (crew, maintenance, cleaning) 22%
  • Extreme weather 0%
  • Security 0%

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

Fargo (FAR) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 89 minutes. It was cancelled 0.6% of the time.

On-time arrivals
71.0%
Less than 15 minutes late
Cancelled
0.6%
Of scheduled flights
Average delay when late
89 min
Flights arriving 15+ minutes late
Flights tracked
163
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 42%
  • Extreme weather 23%
  • Airline (crew, maintenance, cleaning) 22%
  • Late-arriving aircraft 14%
  • Security 0%

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

EWR → PBI

Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 51 minutes. It was cancelled 0.0% of the time.

On-time arrivals
83.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
51 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

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

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

Milwaukee (MKE) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.0% of the time.

On-time arrivals
85.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
59 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

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

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

Salt Lake City (SLC) to Denver (DEN)

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 86.7% 30
October 2025 80.6% 31
November 2025 86.7% 30
December 2025 51.6% 31
January 2026 67.7% 31
February 2026 75.0% 45
March 2026 71.9% 59
April 2026 80.0% 30
May 2026 77.4% 31
June 2026 69.0% 30
July 2026 83.9% 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.