Route
BNA → SAT
Nashville International Airport San Antonio International Airport
How punctual is this route?
- On-time arrivals
- 78.2%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 928
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 58%
- Airline (crew, maintenance, cleaning) 32%
- Air traffic control & airport 8%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 83.6% | 73 |
| October 2025 | 82.8% | 87 |
| November 2025 | 84.2% | 77 |
| December 2025 | 76.6% | 77 |
| January 2026 | 82.5% | 66 |
| February 2026 | 88.9% | 63 |
| March 2026 | 96.3% | 82 |
| April 2026 | 85.9% | 85 |
| May 2026 | 68.2% | 88 |
| June 2026 | 59.3% | 86 |
| July 2026 | 61.0% | 77 |
| August 2026 | 73.1% | 67 |
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 | 928 | 78.2% | 0.5% | 52 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN663
11% late · 63 flights
-
WN1316
27% late · 60 flights
-
WN790
34% late · 58 flights
-
WN4371
62% late · 52 flights
-
WN665
54% late · 48 flights
-
WN2161
4% late · 46 flights
-
WN787
45% late · 42 flights
-
WN1311
33% late · 39 flights
-
WN478
3% late · 34 flights
-
WN1143
0% late · 33 flights
-
WN1575
6% late · 33 flights
-
WN2675
3% late · 33 flights
-
WN2968
9% late · 32 flights
-
WN391
16% late · 31 flights
-
WN5880
19% late · 31 flights
-
WN1353
7% late · 28 flights
-
WN650
0% late · 27 flights
-
WN1359
12% late · 25 flights
-
WN1364
24% late · 25 flights
-
WN636
8% late · 25 flights
-
WN2570
9% late · 23 flights
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