Route
STL → BNA
St. Louis Lambert International Airport Nashville International Airport
How punctual is this route?
- On-time arrivals
- 81.2%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,282
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 57%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 14%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.5% | 108 |
| October 2025 | 84.0% | 119 |
| November 2025 | 86.3% | 102 |
| December 2025 | 78.4% | 102 |
| January 2026 | 89.0% | 96 |
| February 2026 | 86.5% | 96 |
| March 2026 | 76.6% | 110 |
| April 2026 | 86.5% | 111 |
| May 2026 | 78.8% | 114 |
| June 2026 | 72.2% | 108 |
| July 2026 | 68.8% | 112 |
| August 2026 | 75.7% | 104 |
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 | 1,282 | 81.2% | 0.6% | 58 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4148
10% late · 58 flights
-
WN4668
3% late · 58 flights
-
WN4682
4% late · 58 flights
-
WN2274
7% late · 47 flights
-
WN2076
7% late · 46 flights
-
WN482
51% late · 43 flights
-
WN1766
15% late · 42 flights
-
WN1037
21% late · 39 flights
-
WN3888
22% late · 36 flights
-
WN694
44% late · 36 flights
-
WN819
31% late · 36 flights
-
WN3182
34% late · 33 flights
-
WN3456
16% late · 32 flights
-
WN1415
6% late · 31 flights
-
WN1499
3% late · 31 flights
-
WN2185
10% late · 31 flights
-
WN464
13% late · 31 flights
-
WN193
25% late · 28 flights
-
WN4537
8% late · 28 flights
-
WN1110
22% late · 27 flights
-
WN3392
33% late · 27 flights
-
WN3804
7% late · 27 flights
-
WN3557
50% late · 26 flights
-
WN3556
16% late · 25 flights
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