Atlanta (ATL) to St Louis (STL) flights
Delta Air Lines, Southwest Airlines, Frontier Airlines fly nonstop from Hartsfield Jackson Atlanta International Airport to St. Louis Lambert International Airport, with about 74 flights a week in July 2026. The 484-mile flight takes about 1h 38m gate to gate.
- Distance
- 484 mi · 779 km
- Flight time
- 1h 38m
- Airlines
- 3
- Seats filled
- 73%
Airlines flying ATL to STL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 47 | Boeing 737-900ER, Boeing 737-800, Airbus A321 | 313,754 | 1h 38m |
| Southwest Airlines | 20 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 107,858 | 1h 36m |
| Frontier Airlines | 7 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 27,229 | 1h 46m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
ATL to STL flight schedule
13 flight numbers flew this route in August 2026, 10 of them almost daily. The first usually leaves at 7:10am and the last at 11:15pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 244Southwest Airlines | 7:10am | 7:40am | 28 | 93% |
| DL 1571Delta Air Lines | 7:30am | 8:08am | 25 | 92% |
| F9 4473Frontier Airlines | 8:05am | 8:57am | 25 | 66% |
| DL 1400Delta Air Lines | 9:15am | 9:54am | 31 | 88% |
| DL 566Delta Air Lines | 11:05am | 11:46am | 31 | 85% |
| WN 1906Southwest Airlines | 11:30am | 12:10pm | 12 | 92% |
| DL 2700Delta Air Lines | 1:56pm | 2:33pm | 31 | 90% |
| WN 2570Southwest Airlines | 2:40pm | 3:20pm | 12 | 58% |
| DL 1799Delta Air Lines | 3:34pm | 4:17pm | 29 | 76% |
| DL 1393Delta Air Lines | 5:10pm | 5:53pm | 27 | 79% |
| WN 2218Southwest Airlines | 7:15pm | 7:55pm | 24 | 46% |
| DL 2833Delta Air Lines | 7:50pm | 8:33pm | 6 | 75% |
| DL 1403Delta Air Lines | 11:15pm | 11:58pm | 31 | 83% |
Is ATL to STL on time?
From September 2025 to August 2026, 82% of 3,678 flights arrived within 15 minutes of schedule and 1.4% were cancelled. Flights leaving around 7am were the most punctual (92%), those around 8pm the least (63%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (44%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 2,348 | 85% | 10 min | 1.9% |
| Southwest Airlines | 1,095 | 79% | 13 min | 0.4% |
| Frontier Airlines | 235 | 66% | 18 min | 1.7% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 116 | 93% | |
| 7am to 8am | 295 | 92% | |
| 8am to 9am | 401 | 88% | |
| 9am to 10am | 249 | 88% | |
| 10am to 11am | 103 | 84% | |
| 11am to 12pm | 252 | 89% | |
| 12pm to 1pm | 106 | 76% | |
| 1pm to 2pm | 212 | 85% | |
| 2pm to 3pm | 297 | 82% | |
| 3pm to 4pm | 254 | 85% | |
| 4pm to 5pm | 89 | 61% | |
| 5pm to 6pm | 317 | 77% | |
| 6pm to 7pm | 100 | 85% | |
| 7pm to 8pm | 175 | 67% | |
| 8pm to 9pm | 283 | 63% | |
| 9pm to 10pm | 126 | 80% | |
| 10pm to 11pm | 123 | 85% | |
| 11pm to 12am | 180 | 80% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 324 | 41,168 | |
| September 2025 | 317 | 38,896 | |
| October 2025 | 348 | 42,099 | |
| November 2025 | 276 | 34,082 | |
| December 2025 | 308 | 34,933 | |
| January 2026 | 266 | 29,945 | |
| February 2026 | 252 | 29,262 | |
| March 2026 | 277 | 36,224 | |
| April 2026 | 295 | 37,109 | |
| May 2026 | 328 | 41,730 | |
| June 2026 | 316 | 40,963 | |
| July 2026 | 328 | 42,559 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.