Anchorage (ANC) to Denver (DEN): On-Time Performance
Data through July 2026
Anchorage (ANC) to Denver (DEN) effectively runs on two schedules. In March 2025, 97% of arrivals were on time; in January 2026 that fell to 69% — a 27-point seasonal swing. Across the full period the route averages 86% on-time against a national 78%.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 2.2
- last 12 months
- Duration
- 5h 17m
- scheduled
- Distance
- 2,405 mi
Best airline from ANC to DEN
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 91% | 5 min | 0.3% | 298 |
| United Airlines | 86% | 10 min | 0.9% | 1,120 |
| Southwest Airlines | 58% | 29 min | 0.0% | 78 |
Monthly on-time trend
Best time to fly from ANC to DEN
Aim for departures around 4 p.m. (90% on-time); avoid 10 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 10 min |
| Tuesdaybest | 89% | 9 min |
| Wednesday | 85% | 13 min |
| Thursday | 84% | 8 min |
| Friday | 89% | 13 min |
| Saturday | 86% | 7 min |
| Sunday | 85% | 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 aircraft40%
- Airline operations41%
- National airspace system15%
- Weather5%
Frequently asked questions
- How often are flights from ANC to DEN delayed?
- 14% of ANC–DEN 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 ANC to DEN?
- Alaska Airlines has the best on-time record on this route at 91%, based on 298 flights. 3 airlines flew ANC–DEN frequently enough to compare in this period.
- What is the best time of day to fly from ANC to DEN?
- Departures around 4 p.m. have the best record (90% on-time), while departures around 10 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ANC to DEN?
- The scheduled ANC–DEN flight time averages 5h 17m over 2,405 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are ANC to DEN flights cancelled?
- 0.7% 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 ANC to DEN?
- January 2026 was the roughest month in this dataset, with only 69% of arrivals on time. The best was March 2025 at 97%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,496 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.