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Flight Reliability

UA 2239 · United Airlines

Hartford → Denver (BDL–DEN)85% of its flights flew this route. The rest (DEN–DFW) are included in these numbers.

69
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
10 min
Average arrival delay
1.4%
Cancelled
4 min early
Median arrival delay

Based on 428 historical flights. Data through May 2026.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 78% of the time, against 73% between 6–9 PM.

Skip Saturday if you can.

UA 2239 arrived on time 83% of the time on Mondays. On Saturdays: 69%.

Lagging the BDL–DEN route.

UA 2239 arrived on time 77% of the time, versus 85% across the BDL–DEN route.

Slipping a little lately.

UA 2239 arrived on time 77% of the time over the last three months in the data, compared with 81% in the three months before that.

The breakdown

On-time by weekday
  • Mon83%(60 flights)
  • Tue80%(54 flights)
  • Wed82%(62 flights)
  • Thu79%(57 flights)
  • Fri75%(61 flights)
  • Sat69%(55 flights)
  • Sun69%(62 flights)
On-time by departure window
  • 3–6 PM78%(347 flights)
  • 6–9 PM73%(64 flights)
On-time trend by month
73%
May

Jun 50% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202550%26
July 202574%27
August 202564%28
September 202583%30
October 202586%35
November 202583%52
December 202578%32
January 202683%29
February 202682%27
March 202679%33
April 202678%51
May 202673%41
Departures on time
79%
Diverted
2.6%
Flights flown
411
Months covered
12

Same route, other flights

Keep nerding

Based on 428 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.