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Flight UA604

United Airlines flight UA604

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Looking for UA604 in the air…

  • Advisory Coastal Flood Statement FLL

    COASTAL FLOOD STATEMENT NOW IN EFFECT THROUGH THURSDAY EVENING

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

San Francisco (SFO) to Houston (IAH)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 70 minutes. It was cancelled 0.0% of the time.

On-time arrivals
80.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
70 min
Flights arriving 15+ minutes late
Flights tracked
156
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).

Houston (IAH) to Baltimore (BWI)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 43 minutes. It was cancelled 0.0% of the time.

On-time arrivals
90.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
43 min
Flights arriving 15+ minutes late
Flights tracked
142
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 52%
  • Airline (crew, maintenance, cleaning) 43%
  • Late-arriving aircraft 5%
  • Extreme weather 0%
  • Security 0%

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

Denver (DEN) to Las Vegas (LAS)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 53 minutes. It was cancelled 0.0% of the time.

On-time arrivals
89.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
53 min
Flights arriving 15+ minutes late
Flights tracked
76
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 58%
  • Airline (crew, maintenance, cleaning) 24%
  • Air traffic control & airport 18%
  • Extreme weather 0%
  • Security 0%

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

Sioux Falls (FSD) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 28% of the time, and when it is late the delay averages 117 minutes. It was cancelled 3.3% of the time.

On-time arrivals
72.4%
Less than 15 minutes late
Cancelled
3.3%
Of scheduled flights
Average delay when late
117 min
Flights arriving 15+ minutes late
Flights tracked
30
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 75%
  • Air traffic control & airport 11%
  • Extreme weather 8%
  • Airline (crew, maintenance, cleaning) 6%
  • Security 0%

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

Las Vegas (LAS) to Newark (EWR)

Historically, this flight arrives 15+ minutes late 50% of the time, and when it is late the delay averages 80 minutes. It was cancelled 0.0% of the time.

On-time arrivals
50.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
80 min
Flights arriving 15+ minutes late
Flights tracked
28
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 79%
  • Late-arriving aircraft 16%
  • Airline (crew, maintenance, cleaning) 5%
  • Extreme weather 0%
  • Security 0%

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

Fort Lauderdale (FLL) to Denver (DEN)

Only 19 flights on record, which is too few for reliable odds.

On-time arrivals
68.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
94 min
Flights arriving 15+ minutes late
Flights tracked
19
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 65%
  • Airline (crew, maintenance, cleaning) 19%
  • Air traffic control & airport 15%
  • Extreme weather 0%
  • Security 0%

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

Dulles (IAD) to Columbus (CMH)

Only 17 flights on record, which is too few for reliable odds.

On-time arrivals
94.1%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
28 min
Flights arriving 15+ minutes late
Flights tracked
17
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 67%
  • Air traffic control & airport 33%
  • Late-arriving aircraft 0%
  • Extreme weather 0%
  • Security 0%

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

Houston (IAH) to Jackson (JAC)

Only 6 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
6
Scheduled flights in the period

Chicago (ORD) to Eagle (EGE)

Only 6 flights on record, which is too few for reliable odds.

On-time arrivals
50.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
80 min
Flights arriving 15+ minutes late
Flights tracked
6
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 47%
  • Air traffic control & airport 42%
  • Airline (crew, maintenance, cleaning) 10%
  • Extreme weather 0%
  • Security 0%

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

San Francisco (SFO) to Los Angeles (LAX)

Only 4 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
4
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 81.8% 33
October 2025 65.4% 53
November 2025 75.0% 29
December 2025 69.6% 23
January 2026 96.8% 31
February 2026 96.4% 28
March 2026 86.4% 22
April 2026 88.5% 52
May 2026 79.6% 49
June 2026 82.7% 52
July 2026 81.5% 54
August 2026 91.4% 58

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.