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

Arrival Airport:

Distance from CPS to UKI:
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- About this route
- CPS Airport Information
- UKI Airport Information
- Facts about CPS
- Facts about UKI
- 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 UKI
- List of Nearest Airports to UKI
- Map of Furthest Airports from UKI
- List of Furthest Airports from UKI
About this route:
A direct, nonstop flight between St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States and Ukiah Municipal Airport (UKI), Ukiah, California, United States would travel a Great Circle distance of 1,769 miles (or 2,846 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 Ukiah Municipal 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: | UKI / KUKI |
Airport Name: | Ukiah Municipal Airport |
Location: | Ukiah, California, United States |
GPS Coordinates: | 39°7'32"N by 123°12'2"W |
Operator/Owner: | City of Ukiah |
Airport Type: | Public |
Elevation: | 614 feet (187 meters) |
# of Runways: | 1 |
View all routes: | Routes from UKI |
More Information: | UKI Maps & Info |
Facts about St. Louis Downtown Airport (CPS):
- St. Louis Downtown Airport (CPS) has 3 runways.
- 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.
- 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 two survivors out of the airport's original four hangars, Hangar 1 and Hangar 2, are listed on the National Register of Historic Places.
- Historic Hangar #2 houses the Greater Saint Louis Air & Space Museum and the airport is still home to the nation's oldest flight school, Parks College of Engineering and Aviation's Center for Aerospace Sciences, which holds CAA Flight School Certificate #1.
Facts about Ukiah Municipal Airport (UKI):
- The furthest airport from Ukiah Municipal Airport (UKI) is Tôlanaro Airport (FTU), which is located 11,307 miles (18,197 kilometers) away in Tôlanaro, Madagascar.
- Stol Air Commuter served Ukiah during the 1970s with nonstop service to San Francisco International Airport which was operated with Britten-Norman Islander and Trislander STOL capable aircraft.
- Because of Ukiah Municipal Airport's relatively low elevation of 614 feet, planes can take off or land at Ukiah Municipal 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.
- Ukiah Municipal Airport (UKI) currently has only 1 runway.
- CALSTAR is a nonprofit regional air ambulance company serving California and northern Nevada.
- The closest airport to Ukiah Municipal Airport (UKI) is Charles M. Schulz–Sonoma County Airport (STS), which is located 47 miles (76 kilometers) SSE of UKI.