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Flight UA2331

United Airlines flight UA2331

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Dulles (IAD) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 117 minutes. It was cancelled 0.8% of the time.

On-time arrivals
79.8%
Less than 15 minutes late
Cancelled
0.8%
Of scheduled flights
Average delay when late
117 min
Flights arriving 15+ minutes late
Flights tracked
365
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 55%
  • Late-arriving aircraft 23%
  • Airline (crew, maintenance, cleaning) 21%
  • Extreme weather 1%
  • Security 0%

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

Tampa (TPA) to Dulles (IAD)

Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 63 minutes. It was cancelled 1.3% of the time.

On-time arrivals
93.6%
Less than 15 minutes late
Cancelled
1.3%
Of scheduled flights
Average delay when late
63 min
Flights arriving 15+ minutes late
Flights tracked
318
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 65%
  • Late-arriving aircraft 17%
  • Air traffic control & airport 17%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Boston (BOS)

Historically, this flight arrives 15+ minutes late 47% of the time, and when it is late the delay averages 70 minutes. It was cancelled 1.6% of the time.

On-time arrivals
52.9%
Less than 15 minutes late
Cancelled
1.6%
Of scheduled flights
Average delay when late
70 min
Flights arriving 15+ minutes late
Flights tracked
123
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 47%
  • Late-arriving aircraft 40%
  • Airline (crew, maintenance, cleaning) 11%
  • Extreme weather 2%
  • Security 0%

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

Chicago (ORD) to San Francisco (SFO)

Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 66 minutes. It was cancelled 0.0% of the time.

On-time arrivals
75.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
66 min
Flights arriving 15+ minutes late
Flights tracked
37
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 45%
  • Airline (crew, maintenance, cleaning) 23%
  • Extreme weather 18%
  • Air traffic control & airport 14%
  • Security 0%

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

Chicago (ORD) to Kansas City (MCI)

Historically, this flight arrives 15+ minutes late 43% of the time, and when it is late the delay averages 101 minutes. It was cancelled 3.1% of the time.

On-time arrivals
56.7%
Less than 15 minutes late
Cancelled
3.1%
Of scheduled flights
Average delay when late
101 min
Flights arriving 15+ minutes late
Flights tracked
32
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 36%
  • Airline (crew, maintenance, cleaning) 27%
  • Air traffic control & airport 21%
  • Extreme weather 16%
  • Security 0%

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

Chicago (ORD) to Cedar Rapids (CID)

Historically, this flight arrives 15+ minutes late 23% of the time, and when it is late the delay averages 55 minutes. It was cancelled 0.0% of the time.

On-time arrivals
76.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
55 min
Flights arriving 15+ minutes late
Flights tracked
30
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 40%
  • Airline (crew, maintenance, cleaning) 36%
  • Late-arriving aircraft 24%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Los Angeles (LAX)

Historically, this flight arrives 15+ minutes late 46% of the time, and when it is late the delay averages 109 minutes. It was cancelled 0.0% of the time.

On-time arrivals
54.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
109 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 78%
  • Airline (crew, maintenance, cleaning) 16%
  • Air traffic control & airport 6%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Fort Myers (RSW)

Historically, this flight arrives 15+ minutes late 38% of the time, and when it is late the delay averages 122 minutes. It was cancelled 0.0% of the time.

On-time arrivals
62.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
122 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 78%
  • Air traffic control & airport 12%
  • Airline (crew, maintenance, cleaning) 10%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Providence/Warwick (PVD)

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

On-time arrivals
73.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
45 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) 14%
  • Air traffic control & airport 12%
  • Extreme weather 9%
  • Security 0%

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

Chicago (ORD) to Portland (PDX)

Only 16 flights on record, which is too few for reliable odds.

On-time arrivals
43.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
35 min
Flights arriving 15+ minutes late
Flights tracked
16
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 51%
  • Airline (crew, maintenance, cleaning) 24%
  • Late-arriving aircraft 19%
  • Extreme weather 6%
  • 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 76.7% 90
October 2025 87.3% 80
November 2025 79.3% 30
December 2025 75.8% 91
January 2026 86.7% 93
February 2026 85.1% 67
March 2026 79.8% 89
April 2026 80.7% 90
May 2026 82.4% 91
June 2026 70.4% 82
July 2026 74.2% 92
August 2026 63.0% 93

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.