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Flight UA303

United Airlines flight UA303

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Looking for UA303 in the air…

Kansas City (MCI) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 86 minutes. It was cancelled 1.9% of the time.

On-time arrivals
70.9%
Less than 15 minutes late
Cancelled
1.9%
Of scheduled flights
Average delay when late
86 min
Flights arriving 15+ minutes late
Flights tracked
364
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 44%
  • Late-arriving aircraft 44%
  • Extreme weather 7%
  • Airline (crew, maintenance, cleaning) 6%
  • Security 0%

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

Chicago (ORD) to Houston (IAH)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 105 minutes. It was cancelled 2.7% of the time.

On-time arrivals
80.6%
Less than 15 minutes late
Cancelled
2.7%
Of scheduled flights
Average delay when late
105 min
Flights arriving 15+ minutes late
Flights tracked
37
Scheduled flights in the period

What caused the delays

  • Extreme weather 59%
  • Late-arriving aircraft 34%
  • Airline (crew, maintenance, cleaning) 5%
  • Air traffic control & airport 1%
  • Security 0%

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

Chicago (ORD) to Baltimore (BWI)

Historically, this flight arrives 15+ minutes late 50% of the time, and when it is late the delay averages 72 minutes. It was cancelled 2.9% of the time.

On-time arrivals
50.0%
Less than 15 minutes late
Cancelled
2.9%
Of scheduled flights
Average delay when late
72 min
Flights arriving 15+ minutes late
Flights tracked
35
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 61%
  • Air traffic control & airport 33%
  • Airline (crew, maintenance, cleaning) 6%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Salt Lake City (SLC)

Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 42 minutes. It was cancelled 0.0% of the time.

On-time arrivals
64.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
42 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 41%
  • Late-arriving aircraft 33%
  • Air traffic control & airport 26%
  • Extreme weather 0%
  • Security 0%

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

Chicago (ORD) to Miami (MIA)

Historically, this flight arrives 15+ minutes late 52% of the time, and when it is late the delay averages 72 minutes. It was cancelled 4.2% of the time.

On-time arrivals
47.8%
Less than 15 minutes late
Cancelled
4.2%
Of scheduled flights
Average delay when late
72 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 33%
  • Airline (crew, maintenance, cleaning) 31%
  • Late-arriving aircraft 31%
  • Extreme weather 5%
  • Security 0%

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

Philadelphia (PHL) to Chicago (ORD)

Only 1 flight on record, which is too few for reliable odds.

On-time arrivals
0.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
279 min
Flights arriving 15+ minutes late
Flights tracked
1
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 67%
  • Late-arriving aircraft 33%
  • Airline (crew, maintenance, cleaning) 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 69.4% 36
October 2025 62.5% 56
November 2025 80.0% 30
December 2025 70.0% 31
January 2026 76.8% 57
February 2026 92.3% 39
March 2026 59.6% 55
April 2026 75.0% 30
May 2026 64.3% 42
June 2026 66.0% 54
July 2026 65.5% 31
August 2026 41.9% 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.