Route
SJC → DEN
Mineta San Jose International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 80.6%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,546
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 34%
- Late-arriving aircraft 34%
- Airline (crew, maintenance, cleaning) 30%
- Extreme weather 2%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.7% | 264 |
| October 2025 | 87.3% | 246 |
| November 2025 | 89.9% | 248 |
| December 2025 | 83.7% | 217 |
| January 2026 | 93.1% | 189 |
| February 2026 | 88.5% | 177 |
| March 2026 | 86.0% | 172 |
| April 2026 | 85.5% | 167 |
| May 2026 | 77.6% | 197 |
| June 2026 | 64.1% | 221 |
| July 2026 | 66.4% | 234 |
| August 2026 | 67.1% | 214 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 1,520 | 74.8% | 0.5% | 57 min |
| United Airlines | 992 | 89.3% | 0.3% | 74 min |
| Frontier Airlines | 34 | 85.3% | 0.0% | 49 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA625
4% late · 129 flights
-
UA667
11% late · 114 flights
-
UA431
4% late · 91 flights
-
UA1325
7% late · 83 flights
-
UA586
2% late · 82 flights
-
UA1035
22% late · 74 flights
-
WN4530
27% late · 64 flights
-
WN4246
57% late · 63 flights
-
WN3522
0% late · 58 flights
-
WN3524
12% late · 58 flights
-
WN427
48% late · 58 flights
-
UA1134
2% late · 53 flights
-
WN4247
25% late · 52 flights
-
WN1681
35% late · 49 flights
-
WN2506
7% late · 46 flights
-
WN623
16% late · 45 flights
-
WN3523
0% late · 39 flights
-
WN2498
14% late · 36 flights
-
WN3666
42% late · 36 flights
-
WN3668
77% late · 36 flights
-
F94918
15% late · 34 flights
-
UA719
38% late · 34 flights
-
WN2933
15% late · 34 flights
-
WN2023
0% late · 33 flights
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