Nonstop flight route between Ottawa, Ontario, Canada and Great Falls, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from YRO to GFA:
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- About this route
- YRO Airport Information
- GFA Airport Information
- Facts about YRO
- Facts about GFA
- Map of Nearest Airports to YRO
- List of Nearest Airports to YRO
- Map of Furthest Airports from YRO
- List of Furthest Airports from YRO
- Map of Nearest Airports to GFA
- List of Nearest Airports to GFA
- Map of Furthest Airports from GFA
- List of Furthest Airports from GFA
About this route:
A direct, nonstop flight between Ottawa/Rockcliffe Airport (YRO), Ottawa, Ontario, Canada and Malmstrom Air Force Base (GFA), Great Falls, Montana, United States would travel a Great Circle distance of 1,682 miles (or 2,707 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 Ottawa/Rockcliffe Airport and Malmstrom Air Force Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | YRO / CYRO |
Airport Name: | Ottawa/Rockcliffe Airport |
Location: | Ottawa, Ontario, Canada |
GPS Coordinates: | 45°27'37"N by 75°38'45"W |
Operator/Owner: | Rockcliffe Flying Club |
Airport Type: | Public |
Elevation: | 188 feet (57 meters) |
# of Runways: | 1 |
View all routes: | Routes from YRO |
More Information: | YRO Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | GFA / KGFA |
Airport Names: |
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Location: | Great Falls, Montana, United States |
GPS Coordinates: | 47°30'16"N by 111°11'13"W |
View all routes: | Routes from GFA |
More Information: | GFA Maps & Info |
Facts about Ottawa/Rockcliffe Airport (YRO):
- Because of Ottawa/Rockcliffe Airport's relatively low elevation of 188 feet, planes can take off or land at Ottawa/Rockcliffe 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.
- Ottawa/Rockcliffe Airport (YRO) currently has only 1 runway.
- The airport land was originally a military rifle range.
- The furthest airport from Ottawa/Rockcliffe Airport (YRO) is Margaret River Airport (MGV), which is located 11,458 miles (18,440 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Ottawa/Rockcliffe Airport (YRO) is Gatineau-Ottawa Executive Airport (YND), which is located only 6 miles (9 kilometers) NE of YRO.
- The military left the airport completely in 1994, but their aircraft collection remained to form the nucleus of the Canada Aviation Museum.
- Ottawa/Rockcliffe Airport or Rockcliffe Airport, a former military base, is a non-towered airport located on the south shore of the Ottawa River, 4 nautical miles northeast of Downtown Ottawa, Ontario, Canada.
Facts about Malmstrom Air Force Base (GFA):
- Aircraft shipments to the Soviet Union stopped in September 1945, when World War II ended, with approximately 8,000 aircraft having been processed in a 21-month period.
- After World War II ended Great Falls AAB assumed a support mission for military personnel assigned to Alaskan military installations.
- The base's runway was closed on 31 December 1996 for aircraft operations.
- Upon completion of the B-17 training program, in October 1943, Great Falls Army Air Base was transferred to the Air Transport Command and units from Gore Field were transferred to the base.
- In addition to being known as "Malmstrom Air Force Base", another name for GFA is "Malmstrom AFB".
- The furthest airport from Malmstrom Air Force Base (GFA) is Sir Gaëtan Duval Airport (RRG), which is located 10,495 miles (16,891 kilometers) away in Rodrigues Island, Mauritius.
- Z-147 was completely replaced by a new ARSR-4 JSS site on Bootlegger Ridge, about 14 miles northeast of Great Falls AFB.
- With the phaseout of the B-36 from the inventory in the late 1950s, the need for fighter escorts of SAC bombers was eliminated.
- The closest airport to Malmstrom Air Force Base (GFA) is Great Falls International Airport (GTF), which is located only 9 miles (14 kilometers) W of GFA.