Route on-time record
SEA to HNL: most on-time flights and the best time to fly
Seattle (Seattle–Tacoma International Airport) to Honolulu, Oahu (Daniel K. Inouye International Airport). 2,941 nonstop flights in Jun 2025 to May 2026, 65% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was Delta 351 at 7:35 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SEA → HNL
Seattle to Honolulu, Oahu: 2,941 nonstop flights a year
On time (12 months)
65%
Cancelled
1.0%
avg delay 27 min
Best time to leave
Before 9 AM
75% on time vs 52% 6 to 9 PM
Most reliable airline
Delta
77% chance on time
Lowest nonstop fare seen in the next two months: $141 (Alaska 821 on 2026-10-20). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 351
7:35 AM → 11:06 AM6h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.8%
- Avg arrival delay
- 9 min
- Arrived on time 84% of the time (358 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 6 to 9 PM: 52%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Strong track record · 358 flights
Find Delta 351 fares Opens this date on Aviasales#2 · Alaska 121
8:00 AM → 11:05 AM6h 05m nonstop
Local times, typical schedule. Last flown 2026-05-12.
74%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 6 to 9 PM: 52%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find Alaska 121 fares Opens this date on Aviasales#3 · Delta 419
5:30 PM → 8:52 PM6h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.8%
- Avg arrival delay
- 18 min
- Arrived on time 74% of the time (350 flights, Jun 2025 to May 2026).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Strong track record · 350 flights
Find Delta 419 fares Opens this date on Aviasales#4 · Alaska 221
7:22 PM → 10:43 PM6h 21m nonstop
Local times, typical schedule. Last flown 2026-05-12.
67%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 69% of the time (150 flights, Jun 2025 to May 2026).
- Never cancelled in 153 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 52% on time; Before 9 AM: 75%).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 150 flights
Find Alaska 221 fares Opens this date on Aviasales#5 · Delta 672
12:15 PM → 3:47 PM6h 32m nonstop
Local times, typical schedule. Last flown 2026-04-11.
67%
chance on time
- On time (history)
- 48%
- Cancelled
- 4.0%
- Avg arrival delay
- 32 min
- Arrived on time 48% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Delta 672 fares Opens this date on Aviasales#6 · Alaska 821
7:35 AM → 11:01 AM6h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
- On time (history)
- 65%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 65% of the time (130 flights, Jun 2025 to May 2026).
- Never cancelled in 130 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 6 to 9 PM: 52%).
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Moderate track record · 130 flights
Find Alaska 821 fares Opens this date on Aviasales#7 · Alaska 626
11:35 AM → 3:05 PM6h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
62%
chance on time
- On time (history)
- 65%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 65% of the time (175 flights, Jun 2025 to May 2026).
- Never cancelled in 175 scheduled flights.
- Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
Moderate track record · 175 flights
Find Alaska 626 fares Opens this date on Aviasales#8 · Alaska 141
4:15 PM → 9:03 PM6h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
62%
chance on time
- On time (history)
- 67%
- Cancelled
- 0.0%
- Avg arrival delay
- 30 min
- Arrived on time 67% of the time (36 flights, Jun 2025 to May 2026).
- Never cancelled in 36 scheduled flights.
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
- Short track record (36 flights), so its score leans on the airline's record at this hour.
Limited track record · 36 flights
Find Alaska 141 fares Opens this date on Aviasales#9 · Alaska 242
6:59 PM → 10:10 PM6h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
62%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 77% of the time (13 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 52% on time; Before 9 AM: 75%).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Alaska 242 fares Opens this date on Aviasales#10 · Alaska 991
5:55 PM → 9:13 PM6h 18m nonstop
Local times, typical schedule. Last flown 2026-04-20.
57%
chance on time
- On time (history)
- 56%
- Cancelled
- 1.8%
- Avg arrival delay
- 37 min
- Arrived on time 56% of the time (108 flights, Jun 2025 to May 2026).
- Departs inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 108 flights
Find Alaska 991 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines77%
789 flights · 78% on time as flown · 0.9% cancel
- Alaska Airlines61%
1,305 flights · 62% on time as flown · 0.9% cancel
- Hawaiian Airlines57%
847 flights · 56% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM75%
821 flights · avg delay 15 min
- 9 AM to noon60%
660 flights · avg delay 30 min
- Noon to 3 PM70%
268 flights · avg delay 23 min
- 3 to 6 PM63%
784 flights · avg delay 36 min
- 6 to 9 PM52%
408 flights · avg delay 30 min
Best day: Wednesday (74%). Worst: Friday (67%).
Smarter routing
Or connect through a calmer hub
via SJC (Norman Y. Mineta San Jose International Airport)
71% both legs on time- SEA to SJC on time 82%, SJC to HNL on time 88%.
Book connections on one ticket and allow at least an hour at the hub. Leg odds are combined as independent, a rough guide.
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)73%
- Late-arriving aircraft15%
- Air traffic control and airport volume10%
- Severe weather1%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
SEA to HNL questions
- What time of day is best to fly SEA to HNL?
- Before 9 AM: 75% of flights arrived on time, against 52% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from SEA to HNL?
- Delta, with a season-adjusted 77% chance of operating and arriving on time over 789 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on SEA to HNL?
- July (66% on time); the best was September (79%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from SEA
- HNL to SEA (return)
- SEA to LAX 83%
- SEA to PHX 79%
- SEA to SFO 69%
- SEA to ANC 74%
- SEA to DEN 77%
- SEA to LAS 77%
- SEA to ORD 75%
- SEA to GEG 81%
- SEA to DFW 77%
- SEA to PDX 82%
- SEA to SAN 78%
- SEA to SMF 81%
Live status: FAA delays and ground stops