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Flight UA630

United Airlines flight UA630

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Chicago (ORD) to Madison (MSN)

Historically, this flight arrives 15+ minutes late 41% of the time, and when it is late the delay averages 68 minutes. It was cancelled 2.6% of the time.

On-time arrivals
59.0%
Less than 15 minutes late
Cancelled
2.6%
Of scheduled flights
Average delay when late
68 min
Flights arriving 15+ minutes late
Flights tracked
308
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 58%
  • Airline (crew, maintenance, cleaning) 17%
  • Air traffic control & airport 14%
  • Extreme weather 11%
  • Security 0%

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

Raleigh/Durham (RDU) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 57% of the time, and when it is late the delay averages 96 minutes. It was cancelled 3.0% of the time.

On-time arrivals
43.0%
Less than 15 minutes late
Cancelled
3.0%
Of scheduled flights
Average delay when late
96 min
Flights arriving 15+ minutes late
Flights tracked
134
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 44%
  • Late-arriving aircraft 34%
  • Extreme weather 14%
  • Airline (crew, maintenance, cleaning) 9%
  • Security 0%

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

Phoenix (PHX) to Chicago (ORD)

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
65.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
49 min
Flights arriving 15+ minutes late
Flights tracked
58
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 80%
  • Late-arriving aircraft 16%
  • Airline (crew, maintenance, cleaning) 4%
  • Extreme weather 0%
  • Security 0%

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

PBI → ORD

Historically, this flight arrives 15+ minutes late 39% of the time, and when it is late the delay averages 128 minutes. It was cancelled 1.9% of the time.

On-time arrivals
60.8%
Less than 15 minutes late
Cancelled
1.9%
Of scheduled flights
Average delay when late
128 min
Flights arriving 15+ minutes late
Flights tracked
52
Scheduled flights in the period

What caused the delays

  • Extreme weather 39%
  • Late-arriving aircraft 28%
  • Air traffic control & airport 26%
  • Airline (crew, maintenance, cleaning) 7%
  • Security 0%

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

Chicago (ORD) to Portland (PDX)

Historically, this flight arrives 15+ minutes late 31% of the time, and when it is late the delay averages 67 minutes. It was cancelled 0.0% of the time.

On-time arrivals
68.6%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
67 min
Flights arriving 15+ minutes late
Flights tracked
35
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 41%
  • Air traffic control & airport 30%
  • Airline (crew, maintenance, cleaning) 18%
  • Extreme weather 11%
  • Security 0%

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

San Francisco (SFO) to Raleigh/Durham (RDU)

Historically, this flight arrives 15+ minutes late 0% of the time. It was cancelled 0.0% of the time.

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
32
Scheduled flights in the period

Buffalo (BUF) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 58% of the time, and when it is late the delay averages 38 minutes. It was cancelled 0.0% of the time.

On-time arrivals
42.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
38 min
Flights arriving 15+ minutes late
Flights tracked
26
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 58%
  • Airline (crew, maintenance, cleaning) 26%
  • Late-arriving aircraft 13%
  • Extreme weather 3%
  • Security 0%

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

Detroit (DTW) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 57% of the time, and when it is late the delay averages 102 minutes. It was cancelled 0.0% of the time.

On-time arrivals
42.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
102 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 65%
  • Extreme weather 14%
  • Air traffic control & airport 13%
  • Airline (crew, maintenance, cleaning) 7%
  • Security 0%

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

Great Falls (GTF) to Denver (DEN)

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

On-time arrivals
94.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
51 min
Flights arriving 15+ minutes late
Flights tracked
19
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 80%
  • Extreme weather 20%
  • Airline (crew, maintenance, cleaning) 0%
  • Air traffic control & airport 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 60.0% 35
October 2025 56.9% 58
November 2025 49.1% 58
December 2025 72.3% 48
January 2026 57.9% 57
February 2026 76.8% 56
March 2026 54.5% 60
April 2026 71.3% 88
May 2026 65.9% 42
June 2026 54.2% 60
July 2026 46.4% 61
August 2026 41.9% 62

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.