Route
DEN → SFO
Denver International Airport San Francisco International Airport
Alerts at DEN and SFO
How punctual is this route?
- On-time arrivals
- 63.2%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 65 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,488
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 48%
- Late-arriving aircraft 32%
- Airline (crew, maintenance, cleaning) 18%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 74.3% | 451 |
| October 2025 | 71.0% | 460 |
| November 2025 | 70.0% | 437 |
| December 2025 | 64.0% | 457 |
| January 2026 | 80.7% | 435 |
| February 2026 | 74.6% | 399 |
| March 2026 | 82.2% | 448 |
| April 2026 | 59.8% | 426 |
| May 2026 | 53.5% | 483 |
| June 2026 | 39.4% | 494 |
| July 2026 | 43.9% | 514 |
| August 2026 | 52.9% | 484 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 3,429 | 69.0% | 0.2% | 66 min |
| Southwest Airlines | 1,392 | 48.3% | 0.5% | 63 min |
| Frontier Airlines | 667 | 64.0% | 1.0% | 62 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1812
27% late · 365 flights
-
UA2633
31% late · 364 flights
-
UA2391
28% late · 341 flights
-
UA2367
5% late · 340 flights
-
UA1007
34% late · 312 flights
-
UA1561
33% late · 310 flights
-
UA2123
43% late · 306 flights
-
F93439
30% late · 284 flights
-
UA1506
52% late · 201 flights
-
F91093
42% late · 197 flights
-
F91229
39% late · 186 flights
-
UA1389
62% late · 180 flights
-
UA2681
53% late · 125 flights
-
UA2041
25% late · 109 flights
-
WN2629
47% late · 64 flights
-
WN744
41% late · 63 flights
-
WN1667
71% late · 58 flights
-
WN845
75% late · 58 flights
-
UA1572
20% late · 55 flights
-
WN1614
19% late · 54 flights
-
WN2386
84% late · 52 flights
-
UA1301
9% late · 47 flights
-
WN2630
41% late · 46 flights
-
WN2114
11% late · 44 flights
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