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Flight Reliability

UA 1947 · United Airlines

Honolulu → San Francisco (HNL–SFO)88% of its flights flew this route. The rest (SFO–MCO, SFO–ORD) are included in these numbers.

86
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
4 min
Average arrival delay
0.2%
Cancelled
3 min early
Median arrival delay

Based on 417 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 81% of the time, against 77% between 3–6 PM.

Sunday scaries are real for this one.

UA 1947 arrived on time 90% of the time on Tuesdays and just 72% on Sundays. That gap is worth planning around.

A bit behind the HNL–SFO route.

UA 1947 arrived on time 80% of the time, versus 83% across the HNL–SFO route.

It basically never cancels.

Out of 417 scheduled flights, only 0.2% were cancelled.

The breakdown

On-time by weekday
  • Mon80%(59 flights)
  • Tue90%(58 flights)
  • Wed85%(58 flights)
  • Thu76%(59 flights)
  • Fri77%(61 flights)
  • Sat80%(60 flights)
  • Sun72%(60 flights)
On-time by departure window
  • 12–3 PM81%(219 flights)
  • 3–6 PM77%(116 flights)
  • 9 PM–12 AM80%(80 flights)
On-time trend by month
65%
May

Jun 100% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%29
July 202584%31
August 202571%31
September 202589%35
October 202586%56
November 202576%33
December 202573%44
January 202669%36
February 202679%28
March 202677%31
April 202690%30
May 202665%31
Departures on time
80%
Diverted
0.2%
Flights flown
415
Months covered
12

Same route, other flights

Keep nerding

Based on 417 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.