Route
SAT → DEN
San Antonio International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 82.1%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 74 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,063
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 28%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.9% | 219 |
| October 2025 | 82.5% | 252 |
| November 2025 | 88.0% | 242 |
| December 2025 | 84.8% | 282 |
| January 2026 | 88.1% | 228 |
| February 2026 | 86.9% | 193 |
| March 2026 | 79.9% | 295 |
| April 2026 | 85.6% | 250 |
| May 2026 | 78.8% | 266 |
| June 2026 | 69.4% | 282 |
| July 2026 | 82.7% | 291 |
| August 2026 | 79.5% | 263 |
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 | 1,433 | 81.0% | 0.4% | 60 min |
| United Airlines | 1,197 | 83.4% | 0.7% | 84 min |
| Frontier Airlines | 394 | 81.3% | 0.5% | 96 min |
| SkyWest Airlines | 39 | 92.3% | 0.0% | 215 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2853
15% late · 334 flights
-
UA2479
27% late · 308 flights
-
F92355
14% late · 152 flights
-
F93707
23% late · 146 flights
-
UA1789
14% late · 111 flights
-
UA1007
12% late · 102 flights
-
F92097
20% late · 96 flights
-
UA490
12% late · 92 flights
-
UA1464
6% late · 81 flights
-
WN4273
3% late · 63 flights
-
WN3568
48% late · 61 flights
-
WN383
17% late · 60 flights
-
WN3197
7% late · 58 flights
-
WN3450
7% late · 58 flights
-
WN4447
3% late · 58 flights
-
WN114
44% late · 57 flights
-
WN3586
11% late · 57 flights
-
UA515
24% late · 55 flights
-
WN4678
29% late · 52 flights
-
WN2892
11% late · 46 flights
-
WN4155
33% late · 42 flights
-
WN4274
30% late · 40 flights
-
UA551
11% late · 36 flights
-
WN1090
23% late · 35 flights
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