Class B airport - AbsoluteAstronomy.com

Class B is a class of airspace

Airspace class

The world's navigable airspace is divided into three-dimensional segments, each of which is assigned to a specific class. Most nations adhere to the classification specified by the International Civil Aviation Organization and described below...

in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

which follows International Civil Aviation Organization

International Civil Aviation Organization

The International Civil Aviation Organization , pronounced , , is a specialized agency of the United Nations. It codifies the principles and techniques of international air navigation and fosters the planning and development of international air transport to ensure safe and orderly growth...

(ICAO) air space designation. The primary purpose of a Class B airspace area is to reduce the potential for midair collisions in the airspace surrounding airports with high density air traffic operations. Aircraft operating in these airspace areas are subject to certain operating rules and equipment requirements.

Class B airspace protects the approach and departure paths from aircraft not under air traffic control

Air traffic control

Air traffic control is a service provided by ground-based controllers who direct aircraft on the ground and in the air. The primary purpose of ATC systems worldwide is to separate aircraft to prevent collisions, to organize and expedite the flow of traffic, and to provide information and other...

. All aircraft inside Class B airspace are subject to air traffic control

Air traffic control

. Traffic operating under VFR

Visual flight rules

Visual flight rules are a set of regulations which allow a pilot to operate an aircraft in weather conditions generally clear enough to allow the pilot to see where the aircraft is going. Specifically, the weather must be better than basic VFR weather minimums, as specified in the rules of the...

must be identified on radar and explicitly cleared into the airspace before they can enter. The airspace is commonly depicted as resembling an "upside-down wedding cake." The innermost ring extends from the surface area around the airport to typically 10,000' MSL. Several outer rings usually surround it with progressively higher floors to allow traffic into nearby airports without entering the primary airport's Class B airspace.

The airspace around the busiest US airports is classified as ICAO Class B. As of September 2011, there are 37 Class B airports in the United States (36 primary airports and 1 secondary airport). Despite common misconception, Nellis Air Force Base

Nellis Air Force Base

Nellis Air Force Base is a United States Air Force Base, located approximately northeast of Las Vegas, Nevada. It is under the jurisdiction of Air Combat Command .-Overview:...

and Dallas Love Field Airport are not designated as Class B airports, even though they are large airfields located within surface area of Class B.

The following list of Class B airports is sorted by state and IATA Airport Code/ICAO Airport Code

International Civil Aviation Organization airport code

The ICAO airport code or location indicator is a four-character alphanumeric code designating each airport around the world. These codes are defined by the International Civil Aviation Organization, and published in ICAO Document 7910: Location Indicators.The ICAO codes are used by air traffic...

.

Arizona

Arizona

Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

PHX/KPHX Phoenix Sky Harbor International Airport
Phoenix Sky Harbor International Airport
Phoenix Sky Harbor International Airport is a joint civil-military public airport located southeast of the central business district of the city of Phoenix, in Maricopa County, Arizona, United States...

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

LAX/KLAX Los Angeles International
Los Angeles International Airport
Los Angeles International Airport is the primary airport serving the Greater Los Angeles Area, the second-most populated metropolitan area in the United States. It is most often referred to by its IATA airport code LAX, with the letters pronounced individually...
NKX/KNKX Marine Corps Air Station Miramar
Marine Corps Air Station Miramar
Marine Corps Air Station Miramar , formerly Naval Air Station Miramar is a United States Marine Corps installation that is home to the 3rd Marine Aircraft Wing, which is the aviation element of the 1st Marine Expeditionary Force...
SAN/KSAN San Diego International Lindbergh Field
San Diego International Airport
San Diego International Airport , sometimes referred to as Lindbergh Field, is a public airport located northwest of the central business district of San Diego, California and from the Mexico – United States border at Tijuana, Mexico...
SFO/KSFO San Francisco International
San Francisco International Airport
San Francisco International Airport is a major international airport located south of downtown San Francisco, California, United States, near the cities of Millbrae and San Bruno in unincorporated San Mateo County. It is often referred to as SFO...

Colorado

Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...

DEN/KDEN Denver International
Denver International Airport
Denver International Airport , often referred to as DIA, is an airport in Denver, Colorado. By land size, at , it is the largest international airport in the United States, and the third largest international airport in the world after King Fahd International Airport and Montréal-Mirabel...

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

MCO/KMCO Orlando International
Orlando International Airport
Orlando International Airport is a major international airport located southeast of the central business district of Orlando. It is the second busiest airport in Florida, after Miami International Airport...
MIA/KMIA Miami International
Miami International Airport
Miami International Airport , also known as MIA and historically Wilcox Field, is the primary airport serving the South Florida area...
TPA/KTPA Tampa International
Tampa International Airport
Tampa International Airport is a major public airport located six nautical miles west of the central business district of Tampa, in Hillsborough County, Florida, United States. This airport is publicly owned by Hillsborough County Aviation Authority...

Georgia

Georgia (U.S. state)

Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

ATL/KATL Hartsfield-Jackson Atlanta International
Hartsfield-Jackson Atlanta International Airport
Hartsfield–Jackson Atlanta International Airport , known locally as Atlanta Airport, Hartsfield Airport, and Hartsfield–Jackson, is located seven miles south of the central business district of Atlanta, Georgia, United States...

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

HNL/PHNL Honolulu International
Honolulu International Airport
Honolulu International Airport is the principal aviation gateway of the City & County of Honolulu and the State of Hawaii and is identified as one of the busiest airports in the United States, with traffic now exceeding 21 million passengers a year and rising.It is located in the Honolulu...

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

ORD/KORD Chicago O'Hare International
O'Hare International Airport
Chicago O'Hare International Airport , also known as O'Hare Airport, O'Hare Field, Chicago Airport, Chicago International Airport, or simply O'Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, northwest of the Chicago Loop...

Kentucky

The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

CVG/KCVG Cincinnati/Northern Kentucky International
Cincinnati/Northern Kentucky International Airport
Cincinnati/Northern Kentucky International Airport , sometimes called the Greater Cincinnati Airport is located in Hebron, unincorporated Boone County, Kentucky, United States and serves the Greater Cincinnati metropolitan area. Despite being located in Boone County, the airport operations are...

Louisiana

Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...

MSY/KMSY Louis Armstrong New Orleans International
Louis Armstrong New Orleans International Airport
Louis Armstrong New Orleans International Airport is a Class B public use international airport in Jefferson Parish, Louisiana, United States. It is owned by the City of New Orleans and is located 10 nautical miles west of its central business district. The airport's address is 900 Airline Drive...

Maryland

Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

ADW/KADW Andrews Air Force Base
Andrews Air Force Base
Joint Base Andrews is a United States military facility located in Prince George's County, Maryland. The facility is under the jurisdiction of the United States Air Force 11th Wing, Air Force District of Washington ....
BWI/KBWI Baltimore-Washington International Thurgood Marshall Airport
Baltimore-Washington International Thurgood Marshall Airport
Baltimore/Washington International Thurgood Marshall Airport is an international airport serving the Baltimore-Washington Metropolitan Area in the United States. It is commonly called BWI, BWI Airport or BWI Marshall, BWI being an initialism for "Baltimore/Washington International" and the...

Massachusetts

The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

BOS/KBOS General Edward Lawrence Logan International
Logan International Airport
General Edward Lawrence Logan International Airport is located in the East Boston neighborhood of Boston, Massachusetts . It covers , has six runways, and employs an estimated 16,000 people. It is the 19th busiest airport in the United States.Boston serves as a focus city for JetBlue Airways...

(Boston)

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

DTW/KDTW Detroit Metropolitan Wayne County
Detroit Metropolitan Wayne County Airport
Detroit Metropolitan Wayne County Airport , usually called Detroit Metro Airport, Metro Airport locally, or simply DTW, is a major international airport covering in Romulus, Michigan, a suburb of Detroit. It is Michigan's busiest airport....

Minnesota

Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

MSP/KMSP Minneapolis-St. Paul International/Wold-Chamberlain
Minneapolis-Saint Paul International Airport
Minneapolis-Saint Paul International Airport is the largest and busiest airport in the five-state upper Midwest region of Minnesota, Iowa, South Dakota, North Dakota, and Wisconsin.-Overview:...

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

MCI/KMCI Kansas City International
Kansas City International Airport
Kansas City International Airport , originally named Mid-Continent International Airport, is a public airport located 15 miles northwest of the central business district of Kansas City, in Platte County, Missouri, United States. In 2008, 10,469,892 passengers used the airport...
STL/KSTL Lambert-St. Louis International Airport
Lambert-St. Louis International Airport
Lambert-St. Louis International Airport is a Class B international airport serving Greater St. Louis. It is located approximately northwest of downtown St. Louis in unincorporated St. Louis County between Berkeley and Bridgeton. It is the largest and busiest airport in the state with 250 daily...

Nevada

Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

LAS/KLAS Las Vegas McCarran International
McCarran International Airport
McCarran International Airport is the principal commercial airport serving Las Vegas and Clark County, Nevada, United States. The airport is located five miles south of the central business district of Las Vegas, in the unincorporated area of Paradise in Clark County. It covers an area of and...

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

EWR/KEWR Newark Liberty International
Newark Liberty International Airport
Newark Liberty International Airport , first named Newark Metropolitan Airport and later Newark International Airport, is an international airport within the city limits of both Newark and Elizabeth, New Jersey, United States...

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

JFK/KJFK John F. Kennedy International
John F. Kennedy International Airport
John F. Kennedy International Airport is an international airport located in the borough of Queens in New York City, about southeast of Lower Manhattan. It is the busiest international air passenger gateway to the United States, handling more international traffic than any other airport in North...
LGA/KLGA New York LaGuardia
LaGuardia Airport
LaGuardia Airport is an airport located in the northern part of Queens County on Long Island in the City of New York. The airport is located on the waterfront of Flushing Bay and Bowery Bay, and borders the neighborhoods of Astoria, Jackson Heights and East Elmhurst. The airport was originally...

North Carolina

North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

CLT/KCLT Charlotte/Douglas International
Charlotte/Douglas International Airport
Charlotte Douglas International Airport is a joint civil-military public international airport located in Charlotte, North Carolina. Established in 1935 as Charlotte Municipal Airport, in 1954 the airport was renamed Douglas Municipal Airport after former Charlotte mayor Ben Elbert Douglas, Sr...

Ohio

Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

CLE/KCLE Cleveland Hopkins International Airport
Cleveland Hopkins International Airport
Cleveland Hopkins International Airport is a public airport located nine miles southwest of the central business district of Cleveland, a city in Cuyahoga County, Ohio, United States. The airport lies just within the city limits of Cleveland...

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

PHL/KPHL Philadelphia International
Philadelphia International Airport
Philadelphia International Airport is a major airport in Philadelphia, Pennsylvania, United States, and is the largest airport in the Delaware Valley region and in Pennsylvania...
PIT/KPIT Pittsburgh International
Pittsburgh International Airport
Pittsburgh International Airport , formerly Greater Pittsburgh Airport, Greater Pittsburgh International Airport and commonly referred to as Pittsburgh International, is a joint civil–military international airport located in the Pittsburgh suburb of Findlay Township, approximately west of...

Tennessee

Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...

MEM/KMEM Memphis International
Memphis International Airport
Memphis International Airport is a joint civil-military public airport located three miles south of the central business district of Memphis, a city in Shelby County, Tennessee, United States....

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

DFW/KDFW Dallas-Fort Worth International Airport
Dallas-Fort Worth International Airport
Dallas/Fort Worth International Airport is located between the cities of Dallas and Fort Worth, Texas, and is the busiest airport in the U.S. state of Texas...
HOU/KHOU William P. Hobby Airport
William P. Hobby Airport
William P. Hobby Airport is a public airport in Houston, Texas, located from Downtown Houston. The airport covers and has four runways. Hobby Airport is Houston's oldest commercial airport and was the city's primary air terminal until the opening of Houston Intercontinental Airport in 1969...

(Secondary Class B Airport)
IAH/KIAH George Bush Intercontinental
George Bush Intercontinental Airport
George Bush Intercontinental Airport, is a Class B international airport in Houston, Texas, serving the Houston–Sugar Land–Baytown metropolitan area, the sixth-largest metropolitan area in the United States. Located north of Downtown Houston between Interstate 45 and U.S. Highway 59...

(Houston)

Utah

Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...

SLC/KSLC Salt Lake City International
Salt Lake City International Airport
Salt Lake City International Airport is a major public airport in Utah. A joint civil-military facility, it is located in western Salt Lake City, approximately four miles from the central business district...

Virginia

The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

DCA/KDCA Ronald Reagan Washington National
Ronald Reagan Washington National Airport
Ronald Reagan Washington National Airport is a public airport located south of downtown Washington, D.C., in Arlington County, Virginia. It is the commercial airport nearest to Washington, D.C. For many decades, it was called Washington National Airport, but this airport was renamed in 1998 to...
IAD/KIAD Washington Dulles International
Washington Dulles International Airport
Washington Dulles International Airport is a public airport in Dulles, Virginia, 26 miles west of downtown Washington, D.C. The airport serves the Baltimore-Washington-Northern Virginia metropolitan area centered on the District of Columbia. It is named after John Foster Dulles, Secretary of...

Washington:

SEA/KSEA Seattle-Tacoma International
Seattle-Tacoma International Airport
The Seattle–Tacoma International Airport , also known as Sea–Tac Airport or Sea–Tac , is an American airport located in SeaTac, Washington, at the intersections of State Routes 99 and 509 and 518, about west of Interstate 5...

See also