Southwest Airlines LGA to STL on-time performance
Southwest Airlines nonstop flights from New York to St. Louis · Aug 2025 – Jul 2026
On-time arrivals
75%
arrived < 15 min late
Cancelled
3.4%
48 flights
Avg arrival delay
18 min
66 min when late
Rank on route
#3 of 3
route average 77% on time
Key facts
- Southwest Airlines flights on LGA to STL arrived on time 75% of the time in Aug 2025 – Jul 2026.
- 3.4% were cancelled, and 8% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (49%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft49%
- Airline (crew, maintenance, cleaning, fueling)24%
- Air traffic control & airport congestion21%
- Extreme weather5%
- Security0%
Other airlines on LGA to STL
- Republic Airways78% on time · 17 min avg delay
- SkyWest Airlines89% on time · 3 min avg delay
Full LGA to STL comparison →
Southwest Airlines on-time record across all routes →
1,394 Southwest Airlines flights tracked on this route; 48 cancelled, 4 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.