Route on-time record
DEN to EUG: most on-time flights and the best time to fly
Denver (Denver International Airport) to Eugene (Eugene Airport). 1,272 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 0.2% were cancelled. The most reliable flight number was Southwest 1861 at 8:45 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → EUG
Denver to Eugene: 1,272 nonstop flights a year
On time (12 months)
75%
Cancelled
0.2%
avg delay 15 min
Best time to leave
Noon to 3 PM
88% on time vs 45% after 9 PM
Most reliable airline
United
73% chance on time
Lowest nonstop fare seen in the next two months: $362 (United 1303 on 2026-10-26). 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 · Southwest 1861
8:45 AM → 10:30 AM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 83% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Limited track record · 54 flights
Find Southwest 1861 fares Opens this date on Aviasales#2 · United 318
11:15 AM → 1:04 PM2h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.3%
- Avg arrival delay
- 12 min
- Arrived on time 75% of the time (363 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 363 flights
Find United 318 fares Opens this date on Aviasales#3 · United 1303
7:16 PM → 9:07 PM2h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 71% of the time (340 flights, Jun 2025 to May 2026).
- Never cancelled in 340 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 340 flights
Find United 1303 fares Opens this date on Aviasales#4 · Southwest 3866
8:55 PM → 10:45 PM2h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
61%
chance on time
- On time (history)
- 62%
- Cancelled
- 0.0%
- Avg arrival delay
- 25 min
- Arrived on time 62% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 64% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find Southwest 3866 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines73%
728 flights · 73% on time as flown · 0.1% cancel
- Southwest Airlines72%
398 flights · 71% on time as flown · 0.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
78 flights · avg delay 9 min
- 9 AM to noon77%
432 flights · avg delay 11 min
- Noon to 3 PM88%
252 flights · avg delay 7 min
- 6 to 9 PM68%
433 flights · avg delay 23 min
- After 9 PM45%
44 flights · avg delay 28 min
Best day: Monday (78%). Worst: Friday (71%).
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
- Late-arriving aircraft55%
- Airline (crew, maintenance, boarding)31%
- Air traffic control and airport volume13%
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
DEN to EUG questions
- What time of day is best to fly DEN to EUG?
- Noon to 3 PM: 88% of flights arrived on time, against 45% for departures after 9 PM.
- Which airline is most on time from DEN to EUG?
- United, with a season-adjusted 73% chance of operating and arriving on time over 728 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 DEN to EUG?
- July (64% on time); the best was November (87%), 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 DEN
- EUG to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Most on-time flights from DEN on every route →
Live status: FAA delays and ground stops