Denver (DEN) to Santa Ana (SNA): On-Time Performance
Data through July 2026
When you fly DEN to SNA matters as much as anything else about the booking: the route swung from 91% on-time in October 2024 to just 66% in July 2025. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 71%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 10
- last 12 months
- Duration
- 2h 29m
- scheduled
- Distance
- 846 mi
Best airline from DEN to SNA
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Frontier Airlinesmost reliable | 85% | 9 min | 0.7% | 669 |
| United Airlines | 84% | 9 min | 0.3% | 3,708 |
| Southwest Airlines | 75% | 12 min | 0.4% | 3,230 |
Monthly on-time trend
Best time to fly from DEN to SNA
Aim for departures around 6 a.m. (92% on-time); avoid 6 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 11 min |
| Tuesday | 83% | 9 min |
| Wednesday | 83% | 9 min |
| Thursday | 78% | 11 min |
| Friday | 79% | 12 min |
| Saturdaybest | 83% | 9 min |
| Sunday | 80% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft49%
- Airline operations35%
- National airspace system14%
- Weather1%
Frequently asked questions
- How often are flights from DEN to SNA delayed?
- 20% of DEN–SNA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- Which airline is most reliable from DEN to SNA?
- Frontier Airlines has the best on-time record on this route at 85%, based on 669 flights. 3 airlines flew DEN–SNA frequently enough to compare in this period.
- What is the best time of day to fly from DEN to SNA?
- Departures around 6 a.m. have the best record (92% on-time), while departures around 6 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to SNA?
- The scheduled DEN–SNA flight time averages 2h 29m over 846 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are DEN to SNA flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to SNA?
- July 2025 was the roughest month in this dataset, with only 66% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 7,607 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.