Route on-time record
LGA to STL: most on-time flights and the best time to fly
New York (LaGuardia Airport) to St Louis (St. Louis Lambert International Airport). 2,659 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 4.2% were cancelled. The most reliable flight number was Southwest 3060 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LGA → STL
New York to St Louis: 2,659 nonstop flights a year
On time (12 months)
75%
Cancelled
4.2%
avg delay 19 min
Best time to leave
Before 9 AM
91% on time vs 57% 6 to 9 PM
Most reliable airline
Republic
72% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Southwest 3060
6:00 AM → 8:00 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
- On time (history)
- 97%
- Cancelled
- 3.0%
- Avg arrival delay
- 2 min
- Arrived on time 97% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 57%).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 3060 fares Opens this date on Aviasales#2 · Republic 4658 · sold as American Eagle, Delta Connection or United Express
9:09 AM → 11:09 AM3h 00m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as Republic 4533; its record covers all of them.
82%
chance on time
- On time (history)
- 92%
- Cancelled
- 4.7%
- Avg arrival delay
- 3 min
- Arrived on time 92% of the time (60 flights, Jun 2025 to May 2026).
- Cancelled 4.7% of the time (3 of 64).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Moderate track record · 60 flights
Find 9:09 AM flight fares Opens this date on Aviasales#3 · Republic 4521 · sold as American Eagle, Delta Connection or United Express
1:14 PM → 3:12 PM2h 58m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 91% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- 62% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 33 flights
Find 1:14 PM flight fares Opens this date on Aviasales#4 · Republic 5613 · sold as American Eagle, Delta Connection or United Express
10:06 AM → 12:05 PM2h 59m nonstop
Local times, typical schedule. Last flown 2026-05-06.
81%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 92% of the time (24 flights, Jun 2025 to May 2026).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find 10:06 AM flight fares Opens this date on Aviasales#5 · Republic 5617 · sold as American Eagle, Delta Connection or United Express
5:30 PM → 7:26 PM2h 56m nonstop
Local times, typical schedule. Last flown 2026-05-05.
78%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 95% of the time (20 flights, Jun 2025 to May 2026).
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find 5:30 PM flight fares Opens this date on Aviasales#6 · Southwest 2940
8:55 AM → 10:45 AM2h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 82% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 57%).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Limited track record · 55 flights
Find Southwest 2940 fares Opens this date on Aviasales#7 · Southwest 2942
12:00 PM → 1:50 PM2h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 85% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 2942 fares Opens this date on Aviasales#8 · Republic 4353 · sold as American Eagle, Delta Connection or United Express
5:52 PM → 7:59 PM3h 07m nonstop
Local times, typical schedule. Last flown 2026-05-19.
78%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.6%
- Avg arrival delay
- 12 min
- Arrived on time 89% of the time (36 flights, Jun 2025 to May 2026).
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Short track record (36 flights), so its score leans on the airline's record at this hour.
Limited track record · 36 flights
Find 5:52 PM flight fares Opens this date on Aviasales#9 · Republic 5602 · sold as American Eagle, Delta Connection or United Express
10:25 AM → 12:19 PM2h 54m nonstop
Local times, typical schedule. Last flown 2026-04-12.
77%
chance on time
- On time (history)
- 82%
- Cancelled
- 8.3%
- Avg arrival delay
- 14 min
- Arrived on time 82% of the time (33 flights, Jun 2025 to May 2026).
- Cancelled 8.3% of the time (3 of 36).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find 10:25 AM flight fares Opens this date on Aviasales#10 · Republic 4509 · sold as American Eagle, Delta Connection or United Express
12:41 PM → 2:26 PM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- 87% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 12:41 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)72%
1,245 flights · 76% on time as flown · 5.6% cancel
- Southwest Airlines72%
1,386 flights · 74% on time as flown · 3.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
513 flights · avg delay 6 min
- 9 AM to noon81%
588 flights · avg delay 12 min
- Noon to 3 PM80%
481 flights · avg delay 14 min
- 3 to 6 PM65%
516 flights · avg delay 26 min
- 6 to 9 PM57%
536 flights · avg delay 39 min
Best day: Saturday (85%). Worst: Friday (79%).
Smarter routing
Nearby airports that run more on time
EWR → STL 80% chance on time
Newark Liberty International Airport to St. Louis Lambert International Airport · 1,059 flights a year · 17 mi from your airports · yours: 72%
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft51%
- Air traffic control and airport volume24%
- Airline (crew, maintenance, boarding)20%
- Severe weather5%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
LGA to STL questions
- What time of day is best to fly LGA to STL?
- Before 9 AM: 91% of flights arrived on time, against 57% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from LGA to STL?
- Republic, with a season-adjusted 72% chance of operating and arriving on time over 1,245 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on LGA to STL?
- July (71% on time); the best was February (86%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from LGA
- STL to LGA (return)
- LGA to ORD 67%
- LGA to ATL 76%
- LGA to BOS 73%
- LGA to DFW 70%
- LGA to MIA 70%
- LGA to MCO 69%
- LGA to DCA 68%
- LGA to DEN 71%
- LGA to FLL 68%
- LGA to CLT 77%
- LGA to IAH 76%
- LGA to DTW 78%
Live status: FAA delays and ground stops