Nonstop flight route between Rockford, Illinois, United States and Boulder, Colorado, United States:

About this route:

A direct, nonstop flight between Chicago Rockford International Airport (RFD), Rockford, Illinois, United States and Boulder Municipal Airport (WBU), Boulder, Colorado, United States would travel a Great Circle distance of 851 miles (or 1,370 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 Chicago Rockford International Airport and Boulder Municipal Airport, the route shown on this map most likely still appears to be a straight line.

Departure Airport Information:

Arrival Airport Information:

Facts about Chicago Rockford International Airport (RFD):

• Chicago Rockford International Airport (RFD) has 2 runways.
• The closest airport to Chicago Rockford International Airport (RFD) is Southern Wisconsin Regional Airport (JVL), which is located 30 miles (47 kilometers) N of RFD.
• Air shows have played an integral role in the history of the Rockford Airport.
• The airport is in a foreign-trade zone.
• The furthest airport from Chicago Rockford International Airport (RFD) is Margaret River Airport (MGV), which is located 11,008 miles (17,716 kilometers) away in Margaret River, Western Australia, Australia.
• Today the Rockford airport is marketed to residents of Rockford and surrounding areas as an alternative to Chicago Midway International Airport and O'Hare International Airport in Chicago, Mitchell International Airport in Milwaukee, WI and Dane County Regional Airport in Madison, Wisconsin as well as limited service airports such as Dubuque Regional Airport in Iowa.
• Because of Chicago Rockford International Airport's relatively low elevation of 742 feet, planes can take off or land at Chicago Rockford 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.

Facts about Boulder Municipal Airport (WBU):

• Boulder Municipal Airport (WBU) has 2 runways.
• In addition to being known as "Boulder Municipal Airport", another name for WBU is "BDU".
• 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 is a public airport located 3 miles northeast of the central business district of Boulder, a city in Boulder County, Colorado, United States.
• 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.
• There is no terminal, just hangars for various aviation companies and maintenance buildings.
• 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.