Route on-time record
SNA to DEN: most on-time flights and the best time to fly
Santa Ana (John Wayne Orange County International Airport) to Denver (Denver International Airport). 3,708 nonstop flights in Jun 2025 to May 2026, 82% arrived within 15 minutes and 0.4% were cancelled. The most reliable flight number was United 2843 at 10:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SNA → DEN
Santa Ana to Denver: 3,708 nonstop flights a year
On time (12 months)
82%
Cancelled
0.4%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 63% 3 to 6 PM
Most reliable airline
United
84% 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 · United 2843
10:20 AM → 1:43 PM2h 23m 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 (11 flights, Jun 2025 to May 2026).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 2843 fares Opens this date on Aviasales#2 · United 489
9:00 AM → 12:24 PM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.9%
- Avg arrival delay
- 7 min
- Arrived on time 91% of the time (108 flights, Jun 2025 to May 2026).
Moderate track record · 108 flights
Find United 489 fares Opens this date on Aviasales#3 · United 513
7:00 AM → 10:33 AM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as United 250; its record covers all of them.
89%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.9%
- Avg arrival delay
- 5 min
- Arrived on time 90% of the time (105 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 63%).
Moderate track record · 105 flights
Find United 513 fares Opens this date on Aviasales#4 · Southwest 4370
6:45 AM → 10:05 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1207, 2557; its record covers all of them.
86%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 90% of the time (60 flights, Jun 2025 to May 2026).
- Never cancelled in 60 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 63%).
Moderate track record · 60 flights
Find Southwest 4370 fares Opens this date on Aviasales#5 · Southwest 487
7:00 AM → 10:25 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-29.
86%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 91% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 63%).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 487 fares Opens this date on Aviasales#6 · United 2656
6:28 PM → 9:52 PM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 86%
- Cancelled
- 1.1%
- Avg arrival delay
- 8 min
- Arrived on time 86% of the time (273 flights, Jun 2025 to May 2026).
Strong track record · 273 flights
Find United 2656 fares Opens this date on Aviasales#7 · Southwest 1866
11:55 AM → 3:15 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
85%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1866 fares Opens this date on Aviasales#8 · United 421
11:10 AM → 2:34 PM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.5%
- Avg arrival delay
- 9 min
- Arrived on time 88% of the time (186 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 186 flights
Find United 421 fares Opens this date on Aviasales#9 · Southwest 676
10:10 AM → 1:25 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
85%
chance on time
- On time (history)
- 93%
- Cancelled
- 6.7%
- Avg arrival delay
- 8 min
- Arrived on time 93% of the time (14 flights, Jun 2025 to May 2026).
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Southwest 676 fares Opens this date on Aviasales#10 · Southwest 3823
10:45 AM → 1:55 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-04-01.
84%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- 94% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3823 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines84%
1,869 flights · 85% on time as flown · 0.4% cancel
- Frontier Airlines83%
303 flights · 83% on time as flown · 0.6% cancel
- Southwest Airlines77%
1,536 flights · 77% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
1,010 flights · avg delay 6 min
- 9 AM to noon89%
904 flights · avg delay 8 min
- Noon to 3 PM76%
866 flights · avg delay 17 min
- 3 to 6 PM63%
411 flights · avg delay 26 min
- 6 to 9 PM75%
517 flights · avg delay 14 min
Best day: Saturday (88%). Worst: Friday (80%).
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
- Air traffic control and airport volume40%
- Late-arriving aircraft38%
- Airline (crew, maintenance, boarding)18%
- Severe weather4%
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
SNA to DEN questions
- What time of day is best to fly SNA to DEN?
- Before 9 AM: 91% of flights arrived on time, against 63% 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 SNA to DEN?
- United, with a season-adjusted 84% chance of operating and arriving on time over 1,869 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 SNA to DEN?
- June (72% on time); the best was November (88%), 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 SNA
- DEN to SNA (return)
- SNA to SFO 74%
- SNA to PHX 82%
- SNA to LAS 83%
- SNA to SEA 85%
- SNA to DFW 79%
- SNA to SJC 87%
- SNA to OAK 85%
- SNA to SMF 85%
- SNA to ORD 77%
- SNA to SLC 87%
- SNA to PDX 93%
- SNA to IAH 88%
Live status: FAA delays and ground stops