Route
SFO → DEN
San Francisco International Airport Denver International Airport
Alerts at SFO and DEN
How punctual is this route?
- On-time arrivals
- 74.7%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 65 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,486
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 54%
- Airline (crew, maintenance, cleaning) 24%
- Air traffic control & airport 22%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 74.0% | 450 |
| October 2025 | 81.1% | 460 |
| November 2025 | 77.5% | 437 |
| December 2025 | 74.6% | 456 |
| January 2026 | 87.3% | 435 |
| February 2026 | 82.6% | 398 |
| March 2026 | 83.3% | 448 |
| April 2026 | 74.9% | 426 |
| May 2026 | 71.5% | 483 |
| June 2026 | 63.7% | 494 |
| July 2026 | 65.8% | 514 |
| August 2026 | 63.9% | 485 |
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 | 3,427 | 82.1% | 0.2% | 62 min |
| Southwest Airlines | 1,391 | 59.0% | 0.8% | 66 min |
| Frontier Airlines | 668 | 68.9% | 1.2% | 71 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
F91230
11% late · 346 flights
-
UA1430
24% late · 309 flights
-
UA2348
18% late · 289 flights
-
UA1596
32% late · 257 flights
-
UA2436
12% late · 238 flights
-
UA301
16% late · 238 flights
-
F91094
58% late · 189 flights
-
UA2420
3% late · 182 flights
-
UA1479
4% late · 180 flights
-
UA2076
20% late · 161 flights
-
UA1604
34% late · 158 flights
-
F93440
44% late · 133 flights
-
UA1871
14% late · 125 flights
-
UA540
29% late · 103 flights
-
UA1333
21% late · 102 flights
-
UA2019
13% late · 82 flights
-
UA1233
4% late · 71 flights
-
WN4302
19% late · 62 flights
-
WN4251
52% late · 60 flights
-
WN3402
38% late · 59 flights
-
WN321
2% late · 58 flights
-
WN4499
22% late · 58 flights
-
WN3677
84% late · 57 flights
-
UA1745
13% late · 55 flights
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