STL to LGA flight delays & on-time performance
Nonstop flights from St. Louis Lambert International Airport to LaGuardia Airport · 888 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at STL or LGA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from St. Louis (STL) to New York (LGA) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.6% were cancelled, and 9% arrived an hour or more late.
- Republic Airways was the most punctual airline here (80% on time); Southwest Airlines was the least (70%).
- Departures scheduled around 5am did best (97% on time); around 8pm did worst (55%).
- Wednesday was the most reliable day to fly (82% on time) and Sunday the least (69%).
- The largest source of delay minutes was air traffic control & airport congestion (35%).
Which airline is most on time from STL to LGA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 80% | 4.2% | 17 min | 10.1% | 1,202 |
| Southwest Airlines | 70% | 3.1% | 18 min | 8.4% | 1,394 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 67% | 0.0% | 26 min | 14.8% | 28 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am97%153 flights
- 6am90%306 flights
- 7am85%275 flights
- 8am91%37 flights
- 9am83%65 flights
- 10am81%194 flights
- 11am72%334 flights
- 12pm70%90 flights
- 1pm72%154 flights
- 2pm67%98 flights
- 3pm70%353 flights
- 4pm67%92 flights
- 5pm62%69 flights
- 6pm55%91 flights
- 7pm58%203 flights
- 8pm55%110 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%5.4% cancelled
- Tuesday79%5.2% cancelled
- Wednesday82%2.2% cancelled
- Thursday71%2.0% cancelled
- Friday75%2.2% cancelled
- Saturday76%0.5% cancelled
- Sunday69%6.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion35%
- Late-arriving aircraft34%
- Airline (crew, maintenance, cleaning, fueling)27%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather54%
- Air traffic control & airport congestion31%
- Airline (crew, maintenance, cleaning, fueling)15%
- Security0%
STL to LGA: common questions
- How often are STL to LGA flights on time?
- 75% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from St. Louis to New York cancelled?
- 3.6% of scheduled flights were cancelled (94 of 2,624).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 67 min behind schedule on average, and 9.2% of flights were an hour or more late.
- How long is taxi time at STL?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LGA to STL — 77% on time
More flights from St. Louis
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: STL → LGA, nonstop flights by US airlines that report to the DOT. How we calculate this.