Route Reliability
Denver → San Francisco
DEN–SFO · 967 miles · Denver International Airport to San Francisco International Airport
- 69%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 0.5%
- Cancelled
- 5,391
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines74%3,367 flights
- 2.Frontier Airlines72%565 flights
- 3.Southwest Airlines57%1,459 flights
What the data says
Morning flights do better here.
DEN–SFO flights departing between 3–6 AM arrived on time 95% of the time, versus 52% between 6–9 PM.
Thursday is the weak spot.
DEN–SFO flights arrived on time 76% of the time on Saturdays. On Thursdays: 63%.
United Airlines has a clear lead on this route.
United Airlines arrived on time 74% of the time on this route; Southwest Airlines managed 57%.
Recent months have been rougher.
DEN–SFO flights arrived on time 66% of the time over the last three months in the data, compared with 74% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon68%(799 flights)
- Tue75%(739 flights)
- Wed72%(744 flights)
- Thu63%(796 flights)
- Fri69%(799 flights)
- Sat76%(712 flights)
- Sun64%(770 flights)
- 3–6 AM95%(235 flights)
- 6–9 AM77%(913 flights)
- 9 AM–12 PM71%(917 flights)
- 12–3 PM74%(611 flights)
- 3–6 PM73%(949 flights)
- 6–9 PM52%(913 flights)
- 9 PM–12 AM63%(821 flights)
Jun 66% → May 55% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 66% | 465 |
| July 2025 | 57% | 453 |
| August 2025 | 71% | 460 |
| September 2025 | 75% | 451 |
| October 2025 | 72% | 459 |
| November 2025 | 71% | 433 |
| December 2025 | 65% | 456 |
| January 2026 | 81% | 435 |
| February 2026 | 75% | 398 |
| March 2026 | 82% | 444 |
| April 2026 | 62% | 423 |
| May 2026 | 55% | 482 |
Same trip, other airports
Keep nerding
Based on 5,391 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.