Nonstop flight route between Cheyenne, Wyoming, United States and Montague, California, United States:
Departure Airport:

Arrival Airport:

Distance from CYS to SIY:
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- About this route
- CYS Airport Information
- SIY Airport Information
- Facts about CYS
- Facts about SIY
- Map of Nearest Airports to CYS
- List of Nearest Airports to CYS
- Map of Furthest Airports from CYS
- List of Furthest Airports from CYS
- Map of Nearest Airports to SIY
- List of Nearest Airports to SIY
- Map of Furthest Airports from SIY
- List of Furthest Airports from SIY
About this route:
A direct, nonstop flight between Cheyenne Regional Airport (CYS), Cheyenne, Wyoming, United States and Siskiyou County Airport (SIY), Montague, California, United States would travel a Great Circle distance of 914 miles (or 1,470 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 Cheyenne Regional Airport and Siskiyou County Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | CYS / KCYS |
Airport Names: |
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Location: | Cheyenne, Wyoming, United States |
GPS Coordinates: | 41°9'20"N by 104°48'38"W |
Area Served: | Cheyenne, Wyoming |
Operator/Owner: | Cheyenne Regional Airport Board |
Airport Type: | Public |
Elevation: | 6159 feet (1,877 meters) |
# of Runways: | 2 |
View all routes: | Routes from CYS |
More Information: | CYS Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SIY / KSIY |
Airport Names: |
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Location: | Montague, California, United States |
GPS Coordinates: | 41°46'53"N by 122°28'5"W |
Operator/Owner: | Siskiyou County |
Airport Type: | Public |
Elevation: | 2648 feet (807 meters) |
# of Runways: | 1 |
View all routes: | Routes from SIY |
More Information: | SIY Maps & Info |
Facts about Cheyenne Regional Airport (CYS):
- Cheyenne ANGB also hosts an Army Aviation Support Facility of the Wyoming Army National Guard, operating UH-60 Blackhawk helicopters.
- The closest airport to Cheyenne Regional Airport (CYS) is Francis E. Warren Air Force Base (FEW), which is located only 3 miles (5 kilometers) WSW of CYS.
- American Eagle, flying on behalf of American Airlines, started nonstop Embraer ERJ-145s to Dallas/Fort Worth, Texas on July 15, 2010 but ended them on April 3, 2012.
- Cheyenne Regional Airport (CYS) has 2 runways.
- Because of Cheyenne Regional Airport's high elevation of 6,159 feet, planes must typically fly at a faster airspeed in order to takeoff or land at CYS. Combined with a high temperature, this could make CYS a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The airport terminal contains plaques of the inductees into the Wyoming Aviation Hall of Fame.
- In addition to being known as "Cheyenne Regional Airport", another name for CYS is "Jerry Olson Field".
- The airport had its share of celebrated visitors.
- During World War II the airport was a completion and modification center for B-17s.
- Cheyenne ANGB occupies approximately 77 acres of leased land on the Cheyenne Regional Airport.
- The furthest airport from Cheyenne Regional Airport (CYS) is Sir Gaëtan Duval Airport (RRG), which is located 10,803 miles (17,385 kilometers) away in Rodrigues Island, Mauritius.
Facts about Siskiyou County Airport (SIY):
- On 13 September 1962 representatives from the United States Air Force Air Defense Command met with the Siskiyou County, Board of Supervisors.
- The Army Air Forces and the U.S.
- In addition to being known as "Siskiyou County Airport", other names for SIY include "Siskiyou County Air Force Auxiliary Airfield" and "Siskiyou County Army Air Field".
- The closest airport to Siskiyou County Airport (SIY) is Montague Airport-Yreka Rohrer Field (RKC), which is located only 5 miles (9 kilometers) SW of SIY.
- The furthest airport from Siskiyou County Airport (SIY) is Tôlanaro Airport (FTU), which is located 11,131 miles (17,914 kilometers) away in Tôlanaro, Madagascar.
- Siskiyou County Airport (SIY) currently has only 1 runway.