Route on-time record
SEA to ANC: most on-time flights and the best time to fly
Seattle (Seattle–Tacoma International Airport) to Anchorage (Ted Stevens Anchorage International Airport). 6,717 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was Delta 2768 at 7:45 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SEA → ANC
Seattle to Anchorage: 6,717 nonstop flights a year
On time (12 months)
74%
Cancelled
1.0%
avg delay 14 min
Best time to leave
Before 9 AM
85% on time vs 71% 3 to 6 PM
Most reliable airline
Delta
78% chance on time
Lowest nonstop fare seen in the next two months: $147 (Alaska 1332 on 2026-10-21). 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 2768
7:45 AM → 10:34 AM3h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 71%).
- 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 (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Delta 2768 fares Opens this date on Aviasales#2 · Alaska 535
2:38 PM → 5:27 PM3h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 95% of the time (40 flights, Jun 2025 to May 2026).
- Never cancelled in 40 scheduled flights.
- 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 (40 flights), so its score leans on the airline's record at this hour.
Limited track record · 40 flights
Find Alaska 535 fares Opens this date on Aviasales#3 · Alaska 59
6:38 AM → 9:26 AM3h 48m nonstop
Local times, typical schedule. Last flown 2026-04-21.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.8%
- Avg arrival delay
- 8 min
- Arrived on time 82% of the time (109 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 71%).
- 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 · 109 flights
Find Alaska 59 fares Opens this date on Aviasales#4 · Alaska 384
1:36 PM → 4:25 PM3h 49m nonstop
Local times, typical schedule. Last flown 2026-05-12.
81%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 95% of the time (21 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 (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find Alaska 384 fares Opens this date on Aviasales#5 · Alaska 85
7:05 AM → 9:51 AM3h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 83%
- Cancelled
- 3.7%
- Avg arrival delay
- 7 min
- Arrived on time 83% of the time (184 flights, Jun 2025 to May 2026).
- Cancelled 3.7% of the time (7 of 191).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 71%).
- 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 · 184 flights
Find Alaska 85 fares Opens this date on Aviasales#6 · Delta 922
9:35 AM → 12:22 PM3h 47m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.8%
- Avg arrival delay
- 11 min
- Arrived on time 81% of the time (361 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).
Strong track record · 361 flights
Find Delta 922 fares Opens this date on Aviasales#7 · Alaska 378
12:19 PM → 3:08 PM3h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 382; its record covers all of them.
79%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 89% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- 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 (38 flights), so its score leans on the airline's record at this hour.
Limited track record · 38 flights
Find Alaska 378 fares Opens this date on Aviasales#8 · Delta 2367
9:55 PM → 12:29 AM3h 38m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 78% of the time (181 flights, Jun 2025 to May 2026).
- Never cancelled in 181 scheduled flights.
- 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 · 181 flights
Find Delta 2367 fares Opens this date on Aviasales#9 · Delta 928
11:59 AM → 2:45 PM3h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.3%
- Avg arrival delay
- 15 min
- Arrived on time 78% of the time (361 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).
Strong track record · 361 flights
Find Delta 928 fares Opens this date on Aviasales#10 · Alaska 144
11:15 PM → 2:02 AM3h 47m nonstop
Local times, typical schedule. Last flown 2026-03-17.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 77% of the time (232 flights, Jun 2025 to May 2026).
- Never cancelled in 232 scheduled flights.
- 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 · 232 flights
Find Alaska 144 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines78%
1,643 flights · 79% on time as flown · 0.6% cancel
- Alaska Airlines72%
4,913 flights · 73% on time as flown · 1.1% cancel
- Hawaiian Airlines63%
161 flights · 55% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
843 flights · avg delay 8 min
- 9 AM to noon71%
1,530 flights · avg delay 16 min
- Noon to 3 PM78%
1,029 flights · avg delay 14 min
- 3 to 6 PM71%
994 flights · avg delay 16 min
- 6 to 9 PM74%
1,174 flights · avg delay 15 min
- After 9 PM71%
1,147 flights · avg delay 15 min
Best day: Wednesday (78%). Worst: Friday (74%).
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)50%
- Late-arriving aircraft26%
- Air traffic control and airport volume22%
- Severe weather2%
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 ANC questions
- What time of day is best to fly SEA to ANC?
- Before 9 AM: 85% of flights arrived on time, against 71% for departures 3 to 6 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 ANC?
- Delta, with a season-adjusted 78% chance of operating and arriving on time over 1,643 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 ANC?
- January (70% on time); the best was October (83%), 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
- ANC to SEA (return)
- SEA to LAX 83%
- SEA to PHX 79%
- SEA to SFO 69%
- 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%
- SEA to SJC 82%
Live status: FAA delays and ground stops