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Route Reliability

Honolulu → GUM

HNL–GUM · 3,801 miles · Daniel K. Inouye International Airport to GUM Airport

86
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
1 min early
Average arrival delay
1.1%
Cancelled
365
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 83% of the time across 365 flights. No comparison to make.

What the data says

The 12–3 PM departure wins.

HNL–GUM flights departing between 12–3 PM arrived on time 87% of the time, versus 78% between 3–6 PM.

Friday is doing you no favors.

HNL–GUM flights arrived on time 89% of the time on Thursdays and just 73% on Fridays. That gap is worth planning around.

Slipping a little lately.

HNL–GUM flights arrived on time 74% of the time over the last three months in the data, compared with 78% in the three months before that.

The breakdown

On-time by weekday
  • Mon84%(51 flights)
  • Tue86%(51 flights)
  • Wed87%(52 flights)
  • Thu89%(52 flights)
  • Fri73%(52 flights)
  • Sat80%(51 flights)
  • Sun81%(52 flights)
On-time by departure window
  • 12–3 PM87%(208 flights)
  • 3–6 PM78%(153 flights)
On-time trend by month
81%
May

Jun 93% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202587%31
August 202577%31
September 202587%30
October 202597%31
November 202597%30
December 202587%31
January 202687%30
February 202661%28
March 202655%31
April 202685%27
May 202681%31

Keep nerding

Based on 365 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.