Nonstop flight route between Cahokia, Illinois (near St. Louis), United States and Santa Ana, California, United States:
Departure Airport:

Arrival Airport:

Distance from CPS to SNA:
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- About this route
- CPS Airport Information
- SNA Airport Information
- Facts about CPS
- Facts about SNA
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
- Map of Nearest Airports to SNA
- List of Nearest Airports to SNA
- Map of Furthest Airports from SNA
- List of Furthest Airports from SNA
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and John Wayne Airport (SNA), Santa Ana, California, United States would travel a Great Circle distance of 1,577 miles (or 2,538 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the relatively short distance between St. Louis Downtown Airport and John Wayne Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | CPS / KCPS |
Airport Name: | St. Louis Downtown Airport |
Location: | Cahokia, Illinois (near St. Louis), United States |
GPS Coordinates: | 38°34'14"N by 90°9'21"W |
Area Served: | Greater St. Louis |
Operator/Owner: | Bi-State Development Agency |
Airport Type: | Public |
Elevation: | 413 feet (126 meters) |
# of Runways: | 3 |
View all routes: | Routes from CPS |
More Information: | CPS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SNA / KSNA |
Airport Name: | John Wayne Airport |
Location: | Santa Ana, California, United States |
GPS Coordinates: | 33°40'32"N by 117°52'5"W |
Area Served: | Orange County, California |
Operator/Owner: | Orange County |
Airport Type: | Public |
Elevation: | 56 feet (17 meters) |
# of Runways: | 2 |
View all routes: | Routes from SNA |
More Information: | SNA Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- St. Louis Downtown Airport (CPS) has 3 runways.
- Because of St. Louis Downtown Airport's relatively low elevation of 413 feet, planes can take off or land at St. Louis Downtown Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The furthest airport from St. Louis Downtown Airport (CPS) is Margaret River Airport (MGV), which is located 10,998 miles (17,700 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to St. Louis Downtown Airport (CPS) is Lambert–St. Louis International Airport (STL), which is located only 16 miles (27 kilometers) NW of CPS.
- The airport opened in 1929 as Curtiss-Steinberg Airport.
Facts about John Wayne Airport (SNA):
- The closest airport to John Wayne Airport (SNA) is MCAS El Toro (NZJ), which is located only 8 miles (13 kilometers) E of SNA.
- The main runway, at 5,701 feet, is the shortest of any major airport in the United States, and passenger airliners at the airport have never been larger than the Boeing 757.
- All three terminals, A, B and C, are within the same Thomas F.
- In 1926, Eddie Martin was finally able to acquire a hangar for his airport, a portable wooden building which sold for $350.
- The airport has previously been served by Aloha Airlines, Virgin America and Air Canada.
- Nonstop flights reached Salt Lake City in 1976–77, Denver in 1982, Dallas-Fort Worth in 1983, Chicago in 1986, and New York Kennedy in 1991.
- John Wayne Airport (SNA) has 2 runways.
- Because of John Wayne Airport's relatively low elevation of 56 feet, planes can take off or land at John Wayne Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The furthest airport from John Wayne Airport (SNA) is Pierrefonds Airport (ZSE), which is located 11,490 miles (18,491 kilometers) away in Saint-Pierre, Réunion.
- John Wayne International Airport is the sole commercial airport in Orange County.