BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
STL→LGA

St. Louis, MO (STL) to New York, NY (LGA) flight delay odds

71.6% of 2,645 official scheduled STL-to-LGA flights arrived on time; 16.4% arrived at least 30 minutes late and 3.8% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
71.6%arrived on time
16.4%30+ min late
3.8%cancelled
2,645scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.1%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+9.2 mincompleted flights

Which departure time was most reliable for STL to LGA?

Among qualifying STL-to-LGA departure window results, Early morning had the highest on-time rate: 86.6% of 768 flights. Evening was lowest at 55.6% across 522 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning76886.6%7.4%3.0%
Late morning58874.1%13.8%2.0%
Afternoon76765.6%20.2%5.1%
Evening52255.6%27.2%5.0%

Which weekday was most reliable for STL to LGA?

Among qualifying STL-to-LGA weekday results, Wednesday had the highest on-time rate: 78.8% of 410 flights. Sunday was lowest at 61.3% across 375 flights.

DayFlightsOn time30+ minCancelled
Monday40968.7%21.0%5.6%
Tuesday41976.4%12.9%4.3%
Wednesday41078.8%11.2%3.2%
Thursday40669.0%19.0%2.7%
Friday40873.3%16.4%2.0%
Saturday21873.9%13.3%0.5%
Sunday37561.3%20.3%6.9%

Which airline was most reliable for STL to LGA?

Among qualifying STL-to-LGA airline results, Republic Airways had the highest on-time rate: 76.2% of 1,227 flights. Southwest Airlines was lowest at 67.7% across 1,390 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,39067.7%17.8%3.2%
Republic Airways1,22776.2%14.8%4.6%
SkyWest Airlines2864.3%25.0%0.0%

Which month was most reliable for STL to LGA?

Among qualifying STL-to-LGA month results, September 2025 had the highest on-time rate: 84.3% of 204 flights. March 2026 was lowest at 57.5% across 254 flights.

MonthFlightsOn time30+ minCancelled
July 202522564.9%20.0%8.4%
August 202524080.0%12.5%1.7%
September 202520484.3%5.9%0.5%
October 202519966.8%19.6%2.0%
November 202518966.1%21.7%2.1%
December 202523066.1%23.5%2.2%
January 202621581.4%7.9%5.6%
February 202620273.8%10.4%7.9%
March 202625457.5%26.0%9.1%
April 202624976.3%15.7%0.4%
May 202623472.2%15.4%3.0%
June 202620471.1%17.2%2.0%

What drove STL to LGA delay minutes?

Late aircraft was the largest recorded STL-to-LGA delay category, accounting for 35.0% of 42,774 BTS-attributed delay minutes during July 2025–June 2026.

Airline26.0%
Late aircraft35.0%
National airspace34.6%
Weather4.1%
Security0.3%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.