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Hartsfield-Jackson Atlanta International Airport
Location: Atlanta, Georgia
Airport Code: ATL
Atlanta's Hartsfield-Jackson beats out Beijing as the busiest airport in the world, with more than 100 million passengers a year. It is conveniently located, just a two-hour flight from many large American cities, making it an easy, central layover for connecting flights. It's also the main hub for Delta Airlines.
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O’Hare International Airport
Location: Chicago, Illinois
Airport Code: ORD
O'Hare was the busiest airport in the United States until Atlanta's Hartsfield-Jackson took that title away in the late 1990s. O'Hare is a major connecting airport for destinations in the Midwest and is a hub for United Airlines.
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Los Angeles International Airport
Location/Closest City: Los Angeles, California
Airport Code: LAX
Besides being the main airport for travelers visiting L.A., Hollywood, and Southern California, Los Angeles International handles many connections to Hawaii and the West Coast. LAX sees roughly 85 million passengers a year. It is the largest of five airports in the area, including Hollywood Burbank, Long Beach, John Wayne, and Ontario.
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Dallas/Fort Worth International Airport
Location: Dallas/Ft. Worth, Texas
Airport Code: DFW
Dallas/Fort Worth International Airport is the busiest airport in the state of Texas. The airport spans more than 17,000 acres and is bigger than the island of Manhattan. Because of its size, it has its own postal code and post office. DFW is a hub for American Airlines.Continue to 5 of 25 below.
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John F. Kennedy International Airport
Location: New York City
Airport Code: JFK
As the main airport for New York City, JFK sees arrivals and departures from almost every international airline in the world. JFK handles most international flights while LaGuardia Airport (also in Queens) is more popular for domestic flights. American Airlines and Delta Airlines have a large number of connections through JFK, as does JetBlue.
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Denver International Airport
Location: Denver, Colorado
Airport Code: DEN
With more than 33,500 acres (or 54 square miles) of space, Denver International Airport is the largest airport by area in the United States. Many regional carriers, particularly Frontier Airlines and Southwest Airlines, connect to DEN. Travelers visiting the western states of Colorado, Wyoming, Utah, Idaho, Montana and New Mexico will likely travel via Denver.
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San Francisco International Airport
Location: San Francisco, California
Airport Code: SFO
San Francisco International Airport is the second largest airport in California and connects West Coast travelers to Europe and Asia. It was the base for Virgin America, which was acquired by Alaska Airlines in 2016. SFO has won awards for its green design and efforts to reduce waste, water use, and greenhouse gases. San Jose and Oakland airports are also convenient alternatives to San Francisco International.
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McCarran International Airport
Location: Las Vegas, Nevada
Airport Code: LAS
Although Las Vegas' glitzy casinos are close by, travelers need not leave the McCarran International Airport to gamble, as there are more than 1,300 slot machines available right inside the terminals. Airlines that serve LAS include low-cost carriers like Southwest and Spirit, as well as United, American, and Delta.Continue to 9 of 25 below.
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Phoenix Sky Harbor International Airport
Location: Phoenix, Arizona
Airport Code: PHX
Serving Phoenix and the greater Southwest area, Phoenix Sky Harbor has 120 gates in three terminals. It's also known to be an extremely friendly airport thanks to its stellar customer service. The main airlines here are American Airlines, Delta, and Southwest.
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George Bush Intercontinental Airport
Location: Houston, Texas
Airport Code: IAH
United Airlines' largest hub is at George Bush Intercontinental Airport, but it is far from the only carrier that services this busy Texan airport. Alaska, American, and Delta airlines also service the airport. Routes between IAH and Central and South America tend to be the busiest.
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Charlotte/Douglas International Airport
Location: Charlotte, North Carolina
Airport Code: CLT
This airport in North Carolina connects a string of cities along the East Coast. For flight transfers, CLT is often a common alternative to Atlanta's Hartsfield International Airport. It is well known for the rows of rocking chairs that line the main hall and provide a relaxing way to spend a layover. CLT is a hub for U.S. Airways and United.
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Miami International Airport
Location: Miami, Florida
Airport Code: MIA
Miami International Airport is the main U.S. gateway to Latin America and the Caribbean. MIA has the largest number of global passengers after New York City's JFK International Airport. American Airlines has many routes to this major Florida city. Alternate Miami airports, such as West Palm Beach Airport and Fort Lauderdale/Hollywood International Airport, are good backup options if you can't find your preferred flights out of Miami.Continue to 13 of 25 below.
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Orlando International Airport
Location: Orlando, Florida
Airport Code: MCO
Visitors to Walt Disney World and the surrounding theme parks make Orlando International Airport one of the busiest airports in the U.S. Many regional and low-cost airlines serve MCO, including Southwest and JetBlue.
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Newark Liberty International Airport
Location: Newark, New Jersey
Airport Code: EWR
Although Newark Liberty is located in New Jersey, it serves as one of New York City's three main airport hubs. In 2016, it underwent a $2.3 billion renovation of Terminal A, which was built back in 1973, to handle the 38 million annual travelers. It often offers cheaper flights than its neighboring JFK and LaGuardia airports.
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Seattle-Tacoma International Airport
Location: Seattle, Washington
Airport Code: SEA
Locals call this airport SEA-TAC. In addition to being the main airport for points in the Pacific Northwest, SEA-TAC is a hub for Alaska Airlines. It is conveniently located 20 minutes away from downtown Seattle.
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Minneapolis-St. Paul International Airport
Location: Minneapolis/St. Paul, Minnesota
Airport Code: MSP
Delta Airlines has a major hub at Minneapolis/St. Paul Airport. In addition to the twin cities of Minneapolis and St. Paul, Minnesota, MSP handles passengers going to and from destinations in the Upper Midwest, including Wisconsin, Michigan, and North and South Dakota.Continue to 17 of 25 below.
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Detroit Metropolitan Wayne County Airport
Location: Detroit, Michigan
Airport Code: DTW
Although the name makes it sound like a regional airport, DTW is actually an international airport and is Delta Airlines' second largest hub.
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Philadelphia International Airport
Location: Philadelphia, Pennsylvania
Airport Code: PHL
PHL serves the city of Philadelphia but is also an ideal airport for passengers from Pennsylvania, southern New Jersey, and the Delaware Valley. Philadelphia International Airport is less crowded and more affordable than the three major New York City-area airports, JFK, LGA, and EWR, for those who don't mind the 1.5-hour drive.
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Logan International Airport
Location: Boston, Massachusetts
Airport Code: BOS
Boston's Logan International Airport is the main gateway for New England states, such as Rhode Island, Maine, Vermont, and New Hampshire. Delta, JetBlue, and American are all popular carriers at Logan, and often offer great discount flights from here.
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Location: New York City
Airport Code: LGA
LaGuardia Airport is located in Queens, in the northern part of New York City. It is known as New York City's domestic airport, and it handles the bulk of airline commuter shuttles to and from the Big Apple.Continue to 21 of 25 below.
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Fort Lauderdale/Hollywood International Airport
Location: Fort Lauderdale, Florida
Airport Code: FLL
Although Fort Lauderdale International Airport can be an alternate to Miami (it's approximately 20 miles north of Miami), it's also an ideal entry point for those visiting the beaches of south Florida. Southwest, Delta, and JetBlue are some of the major carriers at FLL.
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Baltimore-Washington International Thurgood Marshall Airport
Location: Baltimore, Maryland
Airport Code: BWI
Located south of Baltimore, BWI is often used as an alternate airport for travelers visiting Washington, D.C. which is only one hour and 20 minutes away. BWI is a major East Coast hub for Southwest Airlines.
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Washington Dulles International Airport
Location: Washington, D.C.
Airport Code: IAD
Located in northern Virginia, Dulles is the main international airport for Washington, D.C. while the capital's primary domestic airport is Washington Reagan National Airport. United Airlines frequently operates out of Dulles.
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Salt Lake City International Airport
Location: Salt Lake City, Utah
Airport Code: SLC
A hub for Delta Airlines, Salt Lake City International Airport serves many connecting flights to western destinations, in particular, ski resorts. The popular Park City resort is only 45 minutes away.Continue to 25 of 25 below.
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Midway International Airport
Location: Chicago, Illinois
Airport Code: MDW
Chicago's smaller airport is an alternative to the city's busy O'Hare International Airport. Southwest Airlines has the largest presence at MDW.