Oakland (OAK) to Denver (DEN): On-Time Performance
Data through May 2026
When you fly OAK to DEN matters as much as anything else about the booking: the route swung from 93% on-time in November 2024 to just 65% in May 2026. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 70%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 4.4
- last 12 months
- Duration
- 2h 28m
- scheduled
- Distance
- 957 mi
Monthly on-time trend
Best time to fly from OAK to DEN
Aim for departures around 7 a.m. (96% on-time); avoid 2 p.m. departures (57%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 14 min |
| Tuesday | 79% | 11 min |
| Wednesdaybest | 83% | 9 min |
| Thursday | 78% | 13 min |
| Friday | 75% | 15 min |
| Saturday | 81% | 8 min |
| Sunday | 77% | 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 aircraft37%
- Airline operations31%
- National airspace system27%
- Weather5%
Frequently asked questions
- How often are flights from OAK to DEN delayed?
- 22% of OAK–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 12 minutes.
- What is the best time of day to fly from OAK to DEN?
- Departures around 7 a.m. have the best record (96% on-time), while departures around 2 p.m. have the worst (57%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from OAK to DEN?
- The scheduled OAK–DEN flight time averages 2h 28m over 957 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are OAK to DEN flights cancelled?
- 0.2% 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 OAK to DEN?
- May 2026 was the roughest month in this dataset, with only 65% of arrivals on time. The best was November 2024 at 93%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 3,392 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.