Southwest Airlines STL to LGA on-time performance
Southwest Airlines nonstop flights from St. Louis to New York · Aug 2025 – Jul 2026
On-time arrivals
70%
arrived < 15 min late
Cancelled
3.1%
43 flights
Avg arrival delay
18 min
57 min when late
Rank on route
#2 of 3
route average 75% on time
Key facts
- Southwest Airlines flights on STL to LGA arrived on time 70% of the time in Aug 2025 – Jul 2026.
- 3.1% were cancelled, and 8% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (37%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion37%
- Late-arriving aircraft34%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather4%
- Security1%
Other airlines on STL to LGA
- Republic Airways80% on time · 17 min avg delay
- SkyWest Airlines67% on time · 26 min avg delay
Full STL to LGA comparison →
Southwest Airlines on-time record across all routes →
1,394 Southwest Airlines flights tracked on this route; 43 cancelled, 14 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.