Denver (DEN) to Sioux Falls (FSD): On-Time Performance
Data through May 2026
Denver (DEN) to Sioux Falls (FSD) effectively runs on two schedules. In October 2025, 91% of arrivals were on time; in June 2025 that fell to 69% — a 22-point seasonal swing. Across the full period the route averages 81% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 76%), which matters most in the rough months.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 5.0
- last 12 months
- Duration
- 1h 42m
- scheduled
- Distance
- 483 mi
Best airline from DEN to FSD
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 84% | 12 min | 0.9% | 2,383 |
| Frontier Airlines | 74% | 18 min | 1.0% | 388 |
| United Airlines | 74% | 24 min | 0.6% | 779 |
Monthly on-time trend
Best time to fly from DEN to FSD
Aim for departures around 8 a.m. (94% on-time); avoid 3 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 16 min |
| Tuesday | 82% | 15 min |
| Wednesdaybest | 83% | 12 min |
| Thursday | 80% | 22 min |
| Friday | 79% | 16 min |
| Saturday | 82% | 12 min |
| Sunday | 81% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations30%
- National airspace system16%
- Weather12%
Frequently asked questions
- How often are flights from DEN to FSD delayed?
- 20% of DEN–FSD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from DEN to FSD?
- SkyWest Airlines has the best on-time record on this route at 84%, based on 2,383 flights. 3 airlines flew DEN–FSD frequently enough to compare in this period.
- What is the best time of day to fly from DEN to FSD?
- Departures around 8 a.m. have the best record (94% on-time), while departures around 3 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 FSD?
- The scheduled DEN–FSD flight time averages 1h 42m over 483 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are DEN to FSD flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to FSD?
- June 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was October 2025 at 91%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 3,550 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.