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Flight UA1598

United Airlines flight UA1598

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  • Watch Ground Delay Program SAN

    Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes

    Reason: airport volume

    Airport status

    Read the story →
  • Advisory Coastal Flood Advisory CLD, SAN, SNA

    COASTAL FLOOD ADVISORY IN EFFECT FROM 4 AM FRIDAY TO NOON PST TUESDAY

    Weather

PBI → EWR

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 139 minutes. It was cancelled 1.9% of the time.

On-time arrivals
90.6%
Less than 15 minutes late
Cancelled
1.9%
Of scheduled flights
Average delay when late
139 min
Flights arriving 15+ minutes late
Flights tracked
207
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 71%
  • Late-arriving aircraft 16%
  • Air traffic control & airport 14%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to Portland (PWM)

Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 40 minutes. It was cancelled 0.0% of the time.

On-time arrivals
76.1%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
40 min
Flights arriving 15+ minutes late
Flights tracked
46
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 48%
  • Airline (crew, maintenance, cleaning) 46%
  • Late-arriving aircraft 6%
  • Extreme weather 0%
  • Security 0%

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

Durango (DRO) to Houston (IAH)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 87 minutes. It was cancelled 0.0% of the time.

On-time arrivals
80.6%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
87 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 49%
  • Air traffic control & airport 35%
  • Airline (crew, maintenance, cleaning) 16%
  • Extreme weather 0%
  • Security 0%

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

Montrose (MTJ) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 146 minutes. It was cancelled 0.0% of the time.

On-time arrivals
74.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
146 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 71%
  • Airline (crew, maintenance, cleaning) 22%
  • Air traffic control & airport 8%
  • Extreme weather 0%
  • Security 0%

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

Milwaukee (MKE) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 45 minutes. It was cancelled 0.0% of the time.

On-time arrivals
79.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
45 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 52%
  • Airline (crew, maintenance, cleaning) 48%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to Montrose (MTJ)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 111 minutes. It was cancelled 0.0% of the time.

On-time arrivals
81.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
111 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 62%
  • Air traffic control & airport 38%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Rapid City (RAP) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 123 minutes. It was cancelled 0.0% of the time.

On-time arrivals
71.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
123 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 44%
  • Air traffic control & airport 36%
  • Airline (crew, maintenance, cleaning) 20%
  • Extreme weather 0%
  • Security 0%

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

Newark (EWR) to Chicago (ORD)

Only 18 flights on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
5.6%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
18
Scheduled flights in the period

Chicago (ORD) to San Diego (SAN)

Only 18 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
31 min
Flights arriving 15+ minutes late
Flights tracked
18
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 46%
  • Air traffic control & airport 41%
  • Airline (crew, maintenance, cleaning) 12%
  • Extreme weather 0%
  • Security 0%

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

Houston (IAH) to New York (LGA)

Only 8 flights on record, which is too few for reliable odds.

On-time arrivals
75.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
102 min
Flights arriving 15+ minutes late
Flights tracked
8
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).

In the news

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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 80.0% 30
October 2025 77.4% 31
November 2025 82.8% 30
December 2025 83.9% 31
January 2026 86.7% 31
February 2026 86.8% 56
March 2026 94.9% 39
April 2026 96.7% 30
May 2026 89.7% 39
June 2026 76.9% 26
July 2026 73.3% 30
August 2026 76.9% 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.