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Flight UA2173

United Airlines flight UA2173

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Looking for UA2173 in the air…

Boise (BOI) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 109 minutes. It was cancelled 0.3% of the time.

On-time arrivals
76.3%
Less than 15 minutes late
Cancelled
0.3%
Of scheduled flights
Average delay when late
109 min
Flights arriving 15+ minutes late
Flights tracked
364
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 38%
  • Airline (crew, maintenance, cleaning) 31%
  • Late-arriving aircraft 30%
  • Extreme weather 1%
  • Security 0%

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

Denver (DEN) to Hayden (HDN)

Historically, this flight arrives 15+ minutes late 47% of the time, and when it is late the delay averages 99 minutes. It was cancelled 1.3% of the time.

On-time arrivals
53.3%
Less than 15 minutes late
Cancelled
1.3%
Of scheduled flights
Average delay when late
99 min
Flights arriving 15+ minutes late
Flights tracked
155
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 48%
  • Airline (crew, maintenance, cleaning) 25%
  • Extreme weather 18%
  • Air traffic control & airport 8%
  • Security 0%

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

In the news

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Headlines found by Google News; stories open on the publisher's site.

On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 62.1% 30
October 2025 80.6% 31
November 2025 79.3% 29
December 2025 80.6% 31
January 2026 83.9% 31
February 2026 89.3% 28
March 2026 85.3% 34
April 2026 81.7% 60
May 2026 73.8% 62
June 2026 55.9% 60
July 2026 47.5% 61
August 2026 49.2% 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.