San Diego International ⇄ St. Louis Lambert International SAN–STL
Airlines flew 960 flights between San Diego International SAN in San Diego, CA and St. Louis Lambert International STL in St Louis, MO in the twelve months to July 2026, both directions together: 136,164 passengers in 161,495 seats, 84% of them filled, and 68,468 pounds of freight. 1,557 miles, about 184 minutes in the air, on 5 airlines: Southwest Airlines Co. (946), American Airlines Inc. (5), Alaska Airlines Inc. (4), United Air Lines Inc. (3) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 75 |
| 2/25 | 87 |
| 3/25 | 109 |
| 4/25 | 82 |
| 5/25 | 80 |
| 6/25 | 82 |
| 7/25 | 79 |
| 8/25 | 73 |
| 9/25 | 68 |
| 10/25 | 114 |
| 11/25 | 96 |
| 12/25 | 92 |
| 1/26 | 69 |
| 2/26 | 70 |
| 3/26 | 74 |
| 4/26 | 70 |
| 5/26 | 73 |
| 6/26 | 82 |
| 7/26 | 79 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 9,525 |
| 2/25 | 9,347 |
| 3/25 | 12,520 |
| 4/25 | 9,806 |
| 5/25 | 9,916 |
| 6/25 | 10,535 |
| 7/25 | 10,476 |
| 8/25 | 10,083 |
| 9/25 | 9,230 |
| 10/25 | 15,186 |
| 11/25 | 13,445 |
| 12/25 | 12,466 |
| 1/26 | 9,965 |
| 2/26 | 9,749 |
| 3/26 | 11,014 |
| 4/26 | 9,829 |
| 5/26 | 10,723 |
| 6/26 | 12,474 |
| 7/26 | 12,000 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 946 | 134,221 | 84% | scheduled passenger service |
| American Airlines Inc. AA | 5 | 766 | 89% | scheduled passenger service |
| Alaska Airlines Inc. AS | 4 | 656 | 94% | scheduled passenger service |
| United Air Lines Inc. UA | 3 | 351 | 63% | scheduled passenger service |
| Delta Air Lines Inc. DL | 2 | 170 | 64% | charter passenger service, scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing B737 Max 800 | 471 | 175 | 69,380 |
| Boeing 737-800 | 294 | 175 | 42,621 |
| Boeing 737-700/700LR/Max 7 | 187 | 141 | 23,138 |
| Boeing B737 Max 900 | 3 | 178 | 504 |
| Airbus Industrie A321-200n | 2 | 197 | 289 |
| Boeing 737-900ER | 2 | 179 | 164 |
| Boeing 757-200 | 1 | 72 | 68 |
SAN → STL this direction alone · flown January 2025 to July 2026
486 flights of 478 scheduled, 66,783 passengers in 80,171 seats, 28,506 pounds of freight. Southwest Airlines Co. 475; American Airlines Inc. 5; Alaska Airlines Inc. 4; United Air Lines Inc. 2.
STL → SAN this direction alone · flown January 2025 to July 2026
474 flights of 473 scheduled, 69,381 passengers in 81,324 seats, 39,962 pounds of freight. Southwest Airlines Co. 471; Delta Air Lines Inc. 2; United Air Lines Inc. 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: San Diego International SAN and St. Louis Lambert International STL; all routes.