Route on-time record
EUG to SEA: most on-time flights and the best time to fly
Eugene (Eugene Airport) to Seattle (Seattle–Tacoma International Airport). 1,989 nonstop flights in Jun 2025 to May 2026, 87% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was SkyWest 4128 at 6:08 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
EUG → SEA
Eugene to Seattle: 1,989 nonstop flights a year
On time (12 months)
87%
Cancelled
1.4%
avg delay 9 min
Best time to leave
9 AM to noon
91% on time vs 65% noon to 3 PM
Most reliable airline
SkyWest
87% chance on time
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 · SkyWest 4128 · sold as United Express, Delta Connection, American Eagle or Alaska
6:08 AM → 7:35 AM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 94% of the time (364 flights, Jun 2025 to May 2026).
- Never cancelled in 365 scheduled flights.
Strong track record · 364 flights
Find 6:08 AM flight fares Opens this date on Aviasales#2 · SkyWest 4124 · sold as United Express, Delta Connection, American Eagle or Alaska
5:50 PM → 7:05 PM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.6%
- Avg arrival delay
- 6 min
- Arrived on time 92% of the time (343 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Strong track record · 343 flights
Find 5:50 PM flight fares Opens this date on Aviasales#3 · SkyWest 3375 · sold as United Express, Delta Connection, American Eagle or Alaska
4:08 PM → 5:23 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
- 89% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 18 flights
Find 4:08 PM flight fares Opens this date on Aviasales#4 · SkyWest 3785 · sold as United Express, Delta Connection, American Eagle or Alaska
12:35 PM → 2:00 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 72% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 65% on time; 9 AM to noon: 91%).
Limited track record · 25 flights
Find 12:35 PM flight fares Opens this date on Aviasales#5 · SkyWest 3119 · sold as United Express, Delta Connection, American Eagle or Alaska
7:59 PM → 9:16 PM1h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 3049; its record covers all of them.
70%
chance on time
- On time (history)
- 47%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 47% of the time (19 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Limited track record · 19 flights
Find 7:59 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)87%
1,540 flights · 88% on time as flown · 1.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
793 flights · avg delay 7 min
- 9 AM to noon91%
497 flights · avg delay 5 min
- Noon to 3 PM65%
206 flights · avg delay 23 min
- 3 to 6 PM91%
463 flights · avg delay 8 min
Best day: Tuesday (89%). Worst: Friday (84%).
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)55%
- Late-arriving aircraft26%
- Air traffic control and airport volume10%
- Severe weather8%
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
EUG to SEA questions
- What time of day is best to fly EUG to SEA?
- 9 AM to noon: 91% of flights arrived on time, against 65% for departures noon to 3 PM.
- Which airline is most on time from EUG to SEA?
- SkyWest, with a season-adjusted 87% chance of operating and arriving on time over 1,540 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 EUG to SEA?
- June (81% on time); the best was April (93%), 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 EUG
- SEA to EUG (return)
- EUG to DEN 79%
- EUG to SFO 76%
- EUG to SLC 93%
- EUG to PHX 88%
- EUG to PDX 91%
- EUG to LAS 75%
- EUG to LAX 88%
- EUG to SMF 91%
- EUG to SAN 80%
Live status: FAA delays and ground stops