Nonstop flight route between Boulder, Colorado, United States and Cardiff, Wales, United Kingdom:

About this route:

A direct, nonstop flight between Boulder Municipal Airport (WBU), Boulder, Colorado, United States and Cardiff Airport (CWL), Cardiff, Wales, United Kingdom would travel a Great Circle distance of 4,570 miles (or 7,355 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 large distance between Boulder Municipal Airport and Cardiff Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Boulder Municipal Airport and Cardiff Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Boulder Municipal Airport (WBU):

• In addition to being known as "Boulder Municipal Airport", another name for WBU is "BDU".
• Because of Boulder Municipal Airport's high elevation of 5,288 feet, planes must typically fly at a faster airspeed in order to takeoff or land at WBU. Combined with a high temperature, this could make WBU a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
• The furthest airport from Boulder Municipal Airport (WBU) is Sir Gaëtan Duval Airport (RRG), which is located 10,881 miles (17,511 kilometers) away in Rodrigues Island, Mauritius.
• Boulder Municipal Airport (WBU) has 2 runways.
• The closest airport to Boulder Municipal Airport (WBU) is Rocky Mountain Metropolitan Airport (BJC), which is located only 11 miles (17 kilometers) SSE of WBU.

Facts about Cardiff Airport (CWL):

• The history of the airport extends back to the early 1940s, when the Air Ministry requisitioned land in the rural Vale of Glamorgan to set up a wartime satellite aerodrome and training base, named RAF Rhoose, for Royal Air Force Spitfire pilots.
• Because of Cardiff Airport's relatively low elevation of 220 feet, planes can take off or land at Cardiff 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.
• Cardiff Airport (CWL) currently has only 1 runway.
• The airport was used by 2.1 million passengers in 2008, falling to around 1.1 million passengers in 2013, according to the United Kingdom Civil Aviation Authority, a reduction of nearly 50% since 2008, making it the 21st busiest airport in the UK in terms of passenger numbers.
• In December 1995, Heli-air Wales began training Helicopter Pilots from the Airport's southside, and are widely accredited with pioneering Helicopter Training in Wales.
• In 2012, the airport ran into a barrage of sustained criticism from the First Minister of Wales, Carwyn Jones.
• In April 1995, due to planned Local Government re-organisation in Wales, the Airport Company was privatised, with shares being sold to property and development firm, TBI plc, which has now been converted back to a private company called TBI Ltd and is concessionary to Orlando Sanford International Airport.
• Cardiff Airport handled 1,072,062 passengers last year.
• On 2 March 2009 the airport management revealed a name change for the airport along with initial development plans to improve the image of the facility.
• The furthest airport from Cardiff Airport (CWL) is Dunedin International Airport (DUD), which is located 11,958 miles (19,244 kilometers) away in Dunedin, Otago, New Zealand.
• The closest airport to Cardiff Airport (CWL) is MoD St Athan (DGX), which is located only 4 miles (6 kilometers) W of CWL.
• In addition to being known as "Cardiff Airport", another name for CWL is "Maes Awyr Caerdydd".
• On 27 March 2013, the Welsh Government announced it had purchased the Cardiff International Airport Ltd from TBI Ltd as a going concern for £52,000,000.