Route
DEN → SAT
Denver International Airport San Antonio International Airport
How punctual is this route?
- On-time arrivals
- 76.8%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 66 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,067
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Airline (crew, maintenance, cleaning) 29%
- Air traffic control & airport 11%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.8% | 220 |
| October 2025 | 83.3% | 252 |
| November 2025 | 87.6% | 243 |
| December 2025 | 76.2% | 282 |
| January 2026 | 78.6% | 225 |
| February 2026 | 85.0% | 193 |
| March 2026 | 73.8% | 299 |
| April 2026 | 84.7% | 250 |
| May 2026 | 79.3% | 267 |
| June 2026 | 62.1% | 282 |
| July 2026 | 67.9% | 291 |
| August 2026 | 67.8% | 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 | 1,435 | 70.3% | 0.3% | 59 min |
| United Airlines | 1,196 | 83.6% | 0.2% | 78 min |
| Frontier Airlines | 396 | 81.0% | 0.3% | 67 min |
| SkyWest Airlines | 40 | 64.1% | 2.5% | 91 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1022
11% late · 327 flights
-
UA2625
7% late · 256 flights
-
UA1110
17% late · 216 flights
-
F92356
19% late · 209 flights
-
UA2819
44% late · 102 flights
-
F93708
22% late · 100 flights
-
F92098
16% late · 87 flights
-
UA395
35% late · 81 flights
-
WN2073
65% late · 61 flights
-
WN2664
17% late · 60 flights
-
WN2059
16% late · 57 flights
-
UA2063
8% late · 53 flights
-
WN2591
6% late · 50 flights
-
WN1597
12% late · 48 flights
-
WN2598
30% late · 47 flights
-
WN768
26% late · 47 flights
-
WN3533
7% late · 46 flights
-
WN1666
44% late · 45 flights
-
WN161
16% late · 44 flights
-
WN3149
21% late · 43 flights
-
WN1708
81% late · 36 flights
-
WN2376
42% late · 33 flights
-
WN3671
15% late · 33 flights
-
WN859
45% late · 31 flights
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