Anchorage (ANC) to Denver (DEN): On-Time Performance
Data through May 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 87% on-time against a national 78%.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 1.9
- last 12 months
- Duration
- 5h 17m
- scheduled
- Distance
- 2,405 mi
Best airline from ANC to DEN
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 90% | 5 min | 0.8% | 263 |
| United Airlines | 87% | 10 min | 0.8% | 1,017 |
Monthly on-time trend
Best time to fly from ANC to DEN
Aim for departures around 11 p.m. (90% on-time); avoid 9 a.m. departures (72%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 8 min |
| Tuesday | 89% | 9 min |
| Wednesday | 87% | 12 min |
| Thursday | 87% | 8 min |
| Fridaybest | 90% | 10 min |
| Saturday | 87% | 6 min |
| Sunday | 85% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations42%
- National airspace system15%
- Weather7%
Frequently asked questions
- How often are flights from ANC to DEN delayed?
- 13% of ANC–DEN 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 9 minutes.
- Which airline is most reliable from ANC to DEN?
- Alaska Airlines has the best on-time record on this route at 90%, based on 263 flights. 2 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 11 p.m. have the best record (90% on-time), while departures around 9 a.m. have the worst (72%). 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 13% of the time.
- How often are ANC to DEN 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 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 1,297 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.