Route
STL → LGA
St. Louis Lambert International Airport LaGuardia Airport
How punctual is this route?
- On-time arrivals
- 74.0%
- Less than 15 minutes late
- Cancelled
- 3.8%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,578
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 36%
- Late-arriving aircraft 34%
- Airline (crew, maintenance, cleaning) 26%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 86.0% | 204 |
| October 2025 | 68.9% | 199 |
| November 2025 | 67.6% | 189 |
| December 2025 | 67.6% | 230 |
| January 2026 | 86.2% | 215 |
| February 2026 | 80.1% | 202 |
| March 2026 | 63.5% | 254 |
| April 2026 | 77.2% | 249 |
| May 2026 | 74.4% | 234 |
| June 2026 | 74.4% | 204 |
| July 2026 | 71.7% | 204 |
| August 2026 | 70.4% | 194 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 1,395 | 69.2% | 3.1% | 61 min |
| Republic Airways | 1,176 | 79.6% | 4.8% | 90 min |
| SkyWest Airlines | 7 | 66.7% | 0.0% | 26 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX4669
12% late · 153 flights
-
YX4461
25% late · 150 flights
-
YX4486
18% late · 148 flights
-
YX4475
26% late · 99 flights
-
YX4509
33% late · 64 flights
-
WN3958
56% late · 60 flights
-
WN4435
12% late · 59 flights
-
WN1171
24% late · 58 flights
-
WN1680
33% late · 58 flights
-
WN4477
3% late · 58 flights
-
WN648
42% late · 58 flights
-
YX4508
17% late · 54 flights
-
YX5822
16% late · 53 flights
-
WN4684
61% late · 52 flights
-
WN4962
42% late · 52 flights
-
WN4939
8% late · 51 flights
-
YX5673
9% late · 51 flights
-
WN2107
11% late · 47 flights
-
WN2342
31% late · 45 flights
-
YX4524
18% late · 44 flights
-
WN2288
39% late · 42 flights
-
WN2444
18% late · 42 flights
-
YX5602
32% late · 36 flights
-
WN1373
17% late · 35 flights
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