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Flight Reliability

UA 5452 · United Airlines

RDD → San Francisco (RDD–SFO)97% of its flights flew this route. The rest (JAX–ORD) are included in these numbers.

74
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
17 min
Average arrival delay
0%
Cancelled
0 min
Median arrival delay

Based on 337 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 9 AM–12 PM arrived on time 73% of the time, against 69% between 12–3 PM.

Wednesdays have been rough.

UA 5452 arrived on time 81% of the time on Tuesdays and just 52% on Wednesdays. That gap is worth planning around.

A bit behind the RDD–SFO route.

UA 5452 arrived on time 69% of the time, versus 76% across the RDD–SFO route.

Lagging the United Airlines network.

UA 5452 arrived on time 69% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon73%(48 flights)
  • Tue81%(48 flights)
  • Wed52%(48 flights)
  • Thu69%(48 flights)
  • Fri69%(48 flights)
  • Sat79%(48 flights)
  • Sun61%(49 flights)
On-time by departure window
  • 9 AM–12 PM73%(11 flights)
  • 12–3 PM69%(326 flights)
On-time trend by month
61%
May

Jun 87% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202590%31
August 202587%31
September 202582%22
October 202573%11
November 202573%30
December 202561%31
January 202677%31
February 202654%28
March 202658%31
April 202630%30
May 202661%31
Departures on time
81%
Diverted
0%
Flights flown
337
Months covered
12

Same route, other flights

Keep nerding

Based on 337 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.