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Flight Reliability

UA 5749 · United Airlines

GUC → Denver (GUC–DEN)97% of its flights flew this route. The rest (PIT–ORD, DAY–ORD) are included in these numbers.

64
A Little Dicey
WanderNerd Reliability Score
66%
Arrive within 15 minutes
23 min
Average arrival delay
0.4%
Cancelled
1 min
Median arrival delay

Based on 274 historical flights. Data through May 2026.

What the data says

Saturdays have been rough.

UA 5749 arrived on time 80% of the time on Wednesdays and just 48% on Saturdays. That gap is worth planning around.

Lagging the GUC–DEN route.

UA 5749 arrived on time 66% of the time, versus 79% across the GUC–DEN route.

Lagging the United Airlines network.

UA 5749 arrived on time 66% of the time, versus 79% across the United Airlines network.

Slipping a little lately.

UA 5749 arrived on time 74% of the time over the last three months in the data, compared with 80% in the three months before that.

The breakdown

On-time by weekday
  • Mon57%(37 flights)
  • Tue71%(35 flights)
  • Wed80%(40 flights)
  • Thu63%(38 flights)
  • Fri67%(39 flights)
  • Sat48%(44 flights)
  • Sun77%(39 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM—(3 flights)
  • 3–6 PM66%(268 flights)
On-time trend by month
64%
May

Jun 55% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%29
July 202542%31
August 202550%30
September 202557%30
October 202564%25
December 202592%13
January 202684%31
February 202668%28
March 202690%30
May 202664%14
Departures on time
74%
Diverted
0.4%
Flights flown
272
Months covered
12

Same route, other flights

Keep nerding

Based on 274 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.