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

Arrival Airport:

Distance from PDX to CPS:
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- About this route
- PDX Airport Information
- CPS Airport Information
- Facts about PDX
- Facts about CPS
- Map of Nearest Airports to PDX
- List of Nearest Airports to PDX
- Map of Furthest Airports from PDX
- List of Furthest Airports from PDX
- Map of Nearest Airports to CPS
- List of Nearest Airports to CPS
- Map of Furthest Airports from CPS
- List of Furthest Airports from CPS
About this route:
A direct, nonstop flight between Portland International Airport (PDX), Portland, Oregon, United States and St. Louis Downtown Airport (CPS), Cahokia, Illinois (near St. Louis), United States would travel a Great Circle distance of 1,720 miles (or 2,768 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 Portland International Airport and St. Louis Downtown Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | PDX / KPDX |
Airport Name: | Portland International Airport |
Location: | Portland, Oregon, United States |
GPS Coordinates: | 45°35'18"N by 122°35'50"W |
Area Served: | Portland metropolitan area |
Airport Type: | Public |
Elevation: | 30 feet (9 meters) |
# of Runways: | 3 |
View all routes: | Routes from PDX |
More Information: | PDX Maps & Info |
Arrival 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 |
Facts about Portland International Airport (PDX):
- The furthest airport from Portland International Airport (PDX) is Tôlanaro Airport (FTU), which is located 10,903 miles (17,546 kilometers) away in Tôlanaro, Madagascar.
- The present H-shape of the PDX terminal, designed by Zimmer Gunsul Frasca Partnership, was completed on September 10, 2001 when the new A, B and C concourses, as well as the light rail line, were finished.
- The main terminal consists of one building roughly "H"-shaped and is divided into five concourses.
- Portland International Airport handled 1,502,956 passengers last year.
- In 1948 the entire airport grounds were flooded during the Vanport Flood, forcing scheduled airline services to reroute to nearby Troutdale Airport.
- PDX has direct connections to major airport hubs throughout the United States, plus non-stop international flights to Canada, Japan, and the Netherlands.
- Portland Airport has five concourses as well as a business aviation terminal.
- During World War II the airfield was used by the United States Army Air Forces.
- Because of Portland International Airport's relatively low elevation of 30 feet, planes can take off or land at Portland International 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 airport's international service was also featured on The Amazing Race 13 as the arrival airport after all three teams that were in the race arrived on Lufthansa from Frankfurt.
- Portland International Airport (PDX) has 3 runways.
- The closest airport to Portland International Airport (PDX) is Portland-Troutdale Airport (TTD), which is located only 10 miles (16 kilometers) ESE of PDX.
Facts about St. Louis Downtown Airport (CPS):
- 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.
- St. Louis Downtown Airport (CPS) has 3 runways.
- The airport closed in 1959 and reopened six years later as Bi-State Parks Airport.
- 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 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 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.