Route Reliability

Route reliability

Hilo (ITO) to Honolulu (HNL): which airline is most on time?

On-time arrivals, cancellations and long delays for every airline that reported nonstop flights from Hilo, HI (ITO) to Honolulu, HI (HNL), September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

Hilo, HIHonolulu, HI

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Three-letter airport codes, nonstop U.S. domestic flights. One direction at a time.

Route at a glance · September 2025 to August 2026

ITO to HNL

Hilo, HI to Honolulu, HI

On time
81.3%vs 75.6% U.S. average Better than average
Cancelled
1.5%vs 1.9% U.S. average Better than average
60+ min late
3.3%vs 8.1% U.S. average Better than average
Scheduled flights
6,272in 12 months3 airlines
Most reliable airline
Southwest Airlines93.1% on time · 1,822 flights

On time more often than the U.S. average, with fewer cancellations.

Compared with all U.S. flights, September 2025 to August 2026. “About average” means within 1.5 points for on time, 0.3 for cancelled and 1 for 60+ minutes late.

Airlines on this route

Ranked by on-time arrival

Airlines from ITO to HNL, September 2025 to August 2026. Rates are shares of all scheduled flights.
Airline On time Cancelled 60+ min late Avg delay when late Diverted Flights
1. Southwest Airlines Most reliable 93.1% 1.0% 1.6% 61 min 0.0% 1,822
2. Hawaiian Airlines 83.0% 0.3% 2.1% 37 min 0.0% 1,455
3. Alaska Airlines 73.4% 2.3% 4.8% 43 min 0.0% 2,995

On time = arrived within 15 minutes of schedule. Avg delay when late = average arrival delay of flights 15+ minutes late. "Most reliable" needs at least 300 flights in 12 months. Tap a heading to sort.

What this means

Southwest Airlines has the strongest record on this route.

  • Southwest Airlines had the best on-time record from Hilo (ITO) to Honolulu (HNL): 93.1% of its 1,822 scheduled flights arrived within 15 minutes of schedule, compared with 73.4% for Alaska Airlines.
  • 1.5% of flights on this route were cancelled (about 1 in 67), about the same as the U.S. average of 1.9%.
  • 3.3% of flights, about 1 in 30, arrived an hour or more late. When a flight was late (15+ minutes), the average arrival delay was 44 min.
  • Overall, 81.3% of flights on this route arrived on time, 5.7 points higher than the U.S. average of 75.6%.
  • Over the last 3 years, September was the most reliable month on this route (94.4% on time) and January the least reliable (81.2%).
  • Cancellations peaked in August, when 3.5% of flights were cancelled.
  • Flights scheduled to depart 6 am to 7 am were the most punctual (95.0% on time); flights scheduled to depart 5 pm to 6 pm were the least (61.9%).
  • In the other direction, Honolulu (HNL) to Hilo (ITO), 82.4% of flights were on time and 1.4% were cancelled. Compare airlines HNL to ITO.

Best and worst months to fly ITO to HNL

Jan 81.2%
Feb 87.8%
Mar 84.5%
Apr 85.3%
May 82.9%
Jun 86.3%
Jul 85.6%
Aug 86.4%
Sep 94.4%
Oct 88.2%
Nov 89.1%
Dec 85.5%
Share of scheduled flights on time 12-month average 81.3%
All airlines combined, by calendar month, September 2023 to August 2026 (3 years pooled). Scale starts at zero.
Show as table
PeriodOn timeFlights
January 81.2% 1,645
February 87.8% 1,504
March 84.5% 1,618
April 85.3% 1,629
May 82.9% 1,634
June 86.3% 1,567
July 85.6% 1,625
August 86.4% 1,601
September 94.4% 1,567
October 88.2% 1,600
November 89.1% 1,580
December 85.5% 1,638
Best and worst calendar month by airline, September 2023 to August 2026.
AirlineBest monthWorst month
Southwest Airlines September (97.8%) July (92.0%)
Hawaiian Airlines September (93.1%) January (78.9%)
Alaska Airlines June (78.8%) March (66.7%)

Month by month, last 12 months

Sep 94.4%
Oct 88.1%
Nov 86.7%
Dec 77.4%
Jan 77.7%
Feb 80.9%
Mar 72.8%
Apr 78.6%
May 77.3%
Jun 83.2%
Jul 81.9%
Aug 78.7%
Share of scheduled flights on time U.S. average 75.6%
All airlines combined, September 2025 to August 2026. Scale starts at zero.
Show as table
PeriodOn timeFlights
Sep 2025 94.4% 496
Oct 2025 88.1% 514
Nov 2025 86.7% 512
Dec 2025 77.4% 540
Jan 2026 77.7% 543
Feb 2026 80.9% 492
Mar 2026 72.8% 530
Apr 2026 78.6% 546
May 2026 77.3% 542
Jun 2026 83.2% 523
Jul 2026 81.9% 518
Aug 2026 78.7% 516

Best and worst departure times

<6a Insufficient sample
6a 95.0%
7a 93.0%
8a 92.4%
9a 81.7%
10a 73.5%
11a 88.2%
12p 73.4%
1p 75.7%
2p 77.2%
3p 80.3%
4p 64.1%
5p 61.9%
6p 82.4%
7p 75.0%
8p 77.4%
9p 78.4%
Share of scheduled flights on time
By scheduled local departure hour at ITO, September 2025 to August 2026. Hours with no scheduled flights are omitted. Scale starts at zero.
Show as table
PeriodOn timeFlights
Departing before 6 am Insufficient sample 1
Departing 6 am to 7 am 95.0% 716
Departing 7 am to 8 am 93.0% 473
Departing 8 am to 9 am 92.4% 354
Departing 9 am to 10 am 81.7% 378
Departing 10 am to 11 am 73.5% 155
Departing 11 am to noon 88.2% 510
Departing noon to 1 pm 73.4% 304
Departing 1 pm to 2 pm 75.7% 334
Departing 2 pm to 3 pm 77.2% 193
Departing 3 pm to 4 pm 80.3% 704
Departing 4 pm to 5 pm 64.1% 370
Departing 5 pm to 6 pm 61.9% 328
Departing 6 pm to 7 pm 82.4% 698
Departing 7 pm to 8 pm 75.0% 396
Departing 8 pm to 9 pm 77.4% 168
Departing 9 pm to 10 pm 78.4% 190
Woman at an airport window watching a plane take off
Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source
U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period
September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through
August 2026
Processed
2026-11-03
Scope
Nonstop scheduled flights from Hilo, HI (ITO) to Honolulu, HI (HNL), one direction. Airlines that report to the DOT only.
Method
Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

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