<P> The FAA uses passenger boarding for a full calendar year to determine Airport Improvement Program (AIP) entitlements . The term hub is used by the FAA to identify very busy commercial service airports . For instance, large hubs are those airports that each account for at least one percent of total U.S. passenger enplanements . Medium hubs are defined as airports that each account for between 0.25 percent and one percent of the total passenger enplanements . These airports are not 100% accurate . </P> <P> In Calendar year 2014 (preliminary FAA data) there were 30 Large Hubs and 30 Medium Hubs . </P> <Table> <Tr> <Th> Rank (2016) </Th> <Th> Airports (large hubs) </Th> <Th> IATA Code </Th> <Th> Major city served </Th> <Th> State </Th> <Th> 2016 </Th> <Th> 2015 </Th> <Th> 2014 </Th> <Th> 2013 </Th> <Th> 2012 </Th> <Th> 2011 </Th> <Th> </Th> <Th> 2009 </Th> <Th> 2008 </Th> <Th> 2007 </Th> <Th> 2006 </Th> <Th> 2005 </Th> </Tr> <Tr> <Td> </Td> <Td> Hartsfield--Jackson Atlanta International Airport </Td> <Td> ATL </Td> <Td> Atlanta </Td> <Td> GA </Td> <Td> 50,476,272 </Td> <Td> 49,340,732 </Td> <Td> 46,604,273 </Td> <Td> 45,308,407 </Td> <Td> 45,798,809 </Td> <Td> 44,414,121 </Td> <Td> 43,130,585 </Td> <Td> 42,280,868 </Td> <Td> 43,236,665 </Td> <Td> 43,236,665 </Td> <Td> 41,352,038 </Td> <Td> 42,402,653 </Td> </Tr> <Tr> <Td> </Td> <Td> Los Angeles International Airport </Td> <Td> LAX </Td> <Td> Los Angeles </Td> <Td> CA </Td> <Td> 39,635,691 </Td> <Td> 36,351,226 </Td> <Td> 34,314,197 </Td> <Td> 32,425,892 </Td> <Td> 31,326,268 </Td> <Td> 30,528,737 </Td> <Td> 28,857,755 </Td> <Td> 27,439,897 </Td> <Td> 28,861,477 </Td> <Td> 30,113,985 </Td> <Td> 29,357,327 </Td> <Td> 29,372,272 </Td> </Tr> <Tr> <Td> </Td> <Td> O'Hare International Airport </Td> <Td> ORD </Td> <Td> Chicago </Td> <Td> IL </Td> <Td> 37,499,201 </Td> <Td> 36,305,668 </Td> <Td> 33,686,811 </Td> <Td> 32,317,835 </Td> <Td> 32,171,743 </Td> <Td> 31,892,301 </Td> <Td> 32,171,831 </Td> <Td> 31,135,732 </Td> <Td> 33,683,991 </Td> <Td> 36,521,585 </Td> <Td> 36,825,097 </Td> <Td> 36,720,005 </Td> </Tr> <Tr> <Td> </Td> <Td> Dallas / Fort Worth International Airport </Td> <Td> DFW </Td> <Td> Dallas / Fort Worth </Td> <Td> TX </Td> <Td> 31,274,875 </Td> <Td> 31,589,832 </Td> <Td> 30,766,940 </Td> <Td> 29,038,128 </Td> <Td> 28,022,877 </Td> <Td> 27,518,358 </Td> <Td> 27,100,656 </Td> <Td> 26,663,984 </Td> <Td> 27,219,985 </Td> <Td> 28,482,417 </Td> <Td> 28,627,749 </Td> <Td> 28,079,147 </Td> </Tr> <Tr> <Td> 5 </Td> <Td> John F. Kennedy International Airport </Td> <Td> JFK </Td> <Td> New York </Td> <Td> NY </Td> <Td> 29,224,554 </Td> <Td> 27,717,503 </Td> <Td> 26,244,928 </Td> <Td> 25,036,358 </Td> <Td> 24,520,943 </Td> <Td> 23,664,830 </Td> <Td> 22,934,047 </Td> <Td> 22,710,272 </Td> <Td> 23,620,948 </Td> <Td> 23,401,351 </Td> <Td> 21,071,501 </Td> <Td> 20,260,359 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Denver International Airport </Td> <Td> DEN </Td> <Td> Denver </Td> <Td> CO </Td> <Td> 28,246,269 </Td> <Td> 26,280,043 </Td> <Td> 26,000,591 </Td> <Td> 25,496,885 </Td> <Td> 25,799,832 </Td> <Td> 25,667,499 </Td> <Td> 25,241,962 </Td> <Td> 24,013,669 </Td> <Td> 24,287,939 </Td> <Td> 20,796,173 </Td> <Td> 20,591,909 </Td> <Td> 20,315,544 </Td> </Tr> <Tr> <Td> 7 </Td> <Td> San Francisco International Airport </Td> <Td> SFO </Td> <Td> San Francisco </Td> <Td> CA </Td> <Td> 25,706,994 </Td> <Td> 24,190,549 </Td> <Td> 22,756,008 </Td> <Td> 21,704,626 </Td> <Td> 21,284,224 </Td> <Td> 20,038,679 </Td> <Td> 19,359,003 </Td> <Td> 18,467,908 </Td> <Td> 18,135,827 </Td> <Td> 17,280,328 </Td> <Td> 16,236,592 </Td> <Td> 16,070,133 </Td> </Tr> <Tr> <Td> 8 </Td> <Td> McCarran International Airport </Td> <Td> LAS </Td> <Td> Las Vegas </Td> <Td> NV </Td> <Td> 22,665,289 </Td> <Td> 21,824,231 </Td> <Td> 20,551,016 </Td> <Td> 19,946,179 </Td> <Td> 19,941,173 </Td> <Td> 19,854,759 </Td> <Td> 18,996,738 </Td> <Td> 19,445,952 </Td> <Td> 21,024,443 </Td> <Td> 22,537,950 </Td> <Td> 22,028,521 </Td> <Td> 21,402,676 </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Seattle--Tacoma International Airport </Td> <Td> SEA </Td> <Td> Seattle / Tacoma </Td> <Td> WA </Td> <Td> 21,887,110 </Td> <Td> 20,148,980 </Td> <Td> 17,888,080 </Td> <Td> 16,690,295 </Td> <Td> 16,121,123 </Td> <Td> 15,971,676 </Td> <Td> 15,406,243 </Td> <Td> 15,273,092 </Td> <Td> 15,839,504 </Td> <Td> 15,419,116 </Td> <Td> 14,703,928 </Td> <Td> 14,359,530 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Charlotte Douglas International Airport </Td> <Td> CLT </Td> <Td> Charlotte </Td> <Td> NC </Td> <Td> 21,455,996 </Td> <Td> 21,913,156 </Td> <Td> 21,542,277 </Td> <Td> 21,346,601 </Td> <Td> 20,032,426 </Td> <Td> 19,022,535 </Td> <Td> 18,629,181 </Td> <Td> 18,165,476 </Td> <Td> 19,291,428 </Td> <Td> 16,884,780 </Td> <Td> 14,949,568 </Td> <Td> 14,109,608 </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Phoenix Sky Harbor International Airport </Td> <Td> PHX </Td> <Td> Phoenix </Td> <Td> AZ </Td> <Td> 20,896,229 </Td> <Td> 21,351,445 </Td> <Td> 20,344,867 </Td> <Td> 19,525,109 </Td> <Td> 19,556,189 </Td> <Td> 19,750,306 </Td> <Td> 18,907,171 </Td> <Td> 18,559,647 </Td> <Td> 19,450,576 </Td> <Td> 20,767,144 </Td> <Td> 20,479,291 </Td> <Td> 19,032,196 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Miami International Airport </Td> <Td> MIA </Td> <Td> Miami </Td> <Td> FL </Td> <Td> 20,796,994 </Td> <Td> 20,986,341 </Td> <Td> 19,468,523 </Td> <Td> 19,420,089 </Td> <Td> 18,987,488 </Td> <Td> 18,342,158 </Td> <Td> 17,017,654 </Td> <Td> 16,187,768 </Td> <Td> 16,377,488 </Td> <Td> 16,194,162 </Td> <Td> 15,664,791 </Td> <Td> 15,092,763 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Orlando International Airport </Td> <Td> MCO </Td> <Td> Orlando </Td> <Td> FL </Td> <Td> 20,283,479 </Td> <Td> 18,759,938 </Td> <Td> 17,278,608 </Td> <Td> 16,884,524 </Td> <Td> 17,159,425 </Td> <Td> 17,250,415 </Td> <Td> 17,017,491 </Td> <Td> 16,371,016 </Td> <Td> 17,288,480 </Td> <Td> 17,614,679 </Td> <Td> 16,807,856 </Td> <Td> 16,592,133 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> George Bush Intercontinental Airport </Td> <Td> IAH </Td> <Td> Houston </Td> <Td> TX </Td> <Td> 20,027,073 </Td> <Td> 20,595,874 </Td> <Td> 19,772,054 </Td> <Td> 18,952,840 </Td> <Td> 19,038,958 </Td> <Td> 19,306,660 </Td> <Td> 19,528,631 </Td> <Td> 19,290,239 </Td> <Td> 20,030,898 </Td> <Td> 24,117,623 </Td> <Td> 22,822,111 </Td> <Td> 20,799,886 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Newark Liberty International Airport </Td> <Td> EWR </Td> <Td> Newark / New Jersey </Td> <Td> NJ </Td> <Td> 19,834,792 </Td> <Td> 18,684,765 </Td> <Td> 17,680,826 </Td> <Td> 17,546,506 </Td> <Td> 17,035,098 </Td> <Td> 16,814,092 </Td> <Td> 16,571,754 </Td> <Td> 16,659,441 </Td> <Td> 17,599,578 </Td> <Td> 18,163,652 </Td> <Td> 17,804,107 </Td> <Td> 16,444,959 </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Minneapolis--Saint Paul International Airport </Td> <Td> MSP </Td> <Td> Minneapolis / St. Paul </Td> <Td> MN </Td> <Td> 18,109,982 </Td> <Td> 17,634,252 </Td> <Td> 16,972,678 </Td> <Td> 16,280,835 </Td> <Td> 15,943,751 </Td> <Td> 15,895,653 </Td> <Td> 15,512,487 </Td> <Td> 15,551,206 </Td> <Td> 16,369,324 </Td> <Td> 16,962,563 </Td> <Td> 17,192,410 </Td> <Td> 17,971,771 </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Logan International Airport </Td> <Td> BOS </Td> <Td> Boston </Td> <Td> MA </Td> <Td> 17,749,202 </Td> <Td> 16,290,323 </Td> <Td> 15,425,869 </Td> <Td> 14,810,153 </Td> <Td> 14,293,675 </Td> <Td> 14,171,476 </Td> <Td> 13,561,814 </Td> <Td> 12,566,797 </Td> <Td> 12,820,489 </Td> <Td> 13,783,297 </Td> <Td> 13,544,552 </Td> <Td> 13,214,923 </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Detroit Metropolitan Airport </Td> <Td> DTW </Td> <Td> Detroit </Td> <Td> MI </Td> <Td> 16,826,287 </Td> <Td> 16,255,507 </Td> <Td> 15,775,941 </Td> <Td> 15,683,523 </Td> <Td> 15,599,877 </Td> <Td> 15,716,865 </Td> <Td> 15,643,890 </Td> <Td> 15,211,402 </Td> <Td> 16,998,174 </Td> <Td> 17,495,135 </Td> <Td> 17,483,468 </Td> <Td> 17,580,363 </Td> </Tr> <Tr> <Td> 19 </Td> <Td> Philadelphia International Airport </Td> <Td> PHL </Td> <Td> Philadelphia </Td> <Td> PA </Td> <Td> 14,521,408 </Td> <Td> 15,101,318 </Td> <Td> 14,747,112 </Td> <Td> 14,727,945 </Td> <Td> 14,587,631 </Td> <Td> 14,883,180 </Td> <Td> 14,951,254 </Td> <Td> 15,002,961 </Td> <Td> 15,586,852 </Td> <Td> 15,656,653 </Td> <Td> 15,390,848 </Td> <Td> 15,376,569 </Td> </Tr> <Tr> <Td> 20 </Td> <Td> LaGuardia Airport </Td> <Td> LGA </Td> <Td> New York </Td> <Td> NY </Td> <Td> 14,706,123 </Td> <Td> 14,319,924 </Td> <Td> 13,415,797 </Td> <Td> 13,372,269 </Td> <Td> 12,818,717 </Td> <Td> 11,989,227 </Td> <Td> 12,001,501 </Td> <Td> 11,084,300 </Td> <Td> 11,567,586 </Td> <Td> 12,529,890 </Td> <Td> 12,925,697 </Td> <Td> 13,014,314 </Td> </Tr> <Tr> <Td> 21 </Td> <Td> Fort Lauderdale--Hollywood International Airport </Td> <Td> FLL </Td> <Td> Fort Lauderdale / Miami </Td> <Td> FL </Td> <Td> 14,263,202 </Td> <Td> 13,061,607 </Td> <Td> 11,987,607 </Td> <Td> 11,538,140 </Td> <Td> 11,445,101 </Td> <Td> 11,332,466 </Td> <Td> 10,829,810 </Td> <Td> 10,258,118 </Td> <Td> 11,020,091 </Td> <Td> 11,079,250 </Td> <Td> 10,204,579 </Td> <Td> 10,729,468 </Td> </Tr> <Tr> <Td> 22 </Td> <Td> Baltimore--Washington International Airport </Td> <Td> BWI </Td> <Td> Baltimore / Washington, D.C. </Td> <Td> MD </Td> <Td> 12,340,183 </Td> <Td> 11,738,828 </Td> <Td> 11,022,200 </Td> <Td> 11,132,731 </Td> <Td> 11,183,965 </Td> <Td> 11,067,317 </Td> <Td> 10,848,633 </Td> <Td> 10,338,950 </Td> <Td> 10,215,225 </Td> <Td> 10,487,789 </Td> <Td> 10,297,607 </Td> <Td> 9,829,432 </Td> </Tr> <Tr> <Td> 23 </Td> <Td> Ronald Reagan Washington National Airport </Td> <Td> DCA </Td> <Td> Washington, D.C. </Td> <Td> VA </Td> <Td> 11,372,460 </Td> <Td> 11,242,375 </Td> <Td> 10,057,794 </Td> <Td> 9,838,034 </Td> <Td> 9,462,206 </Td> <Td> 9,053,004 </Td> <Td> 8,736,804 </Td> <Td> 8,490,288 </Td> <Td> 8,704,466 </Td> <Td> 9,038,174 </Td> <Td> 8,973,410 </Td> <Td> 8,623,907 </Td> </Tr> <Tr> <Td> 24 </Td> <Td> Salt Lake City International Airport </Td> <Td> SLC </Td> <Td> Salt Lake City </Td> <Td> UT </Td> <Td> 11,141,970 </Td> <Td> 10,634,519 </Td> <Td> 10,139,065 </Td> <Td> 9,668,048 </Td> <Td> 9,579,836 </Td> <Td> 9,701,756 </Td> <Td> 9,910,493 </Td> <Td> 9,903,821 </Td> <Td> 9,993,198 </Td> <Td> 10,560,906 </Td> <Td> 10,289,129 </Td> <Td> 10,601,918 </Td> </Tr> <Tr> <Td> 25 </Td> <Td> Midway International Airport </Td> <Td> MDW </Td> <Td> Chicago </Td> <Td> IL </Td> <Td> 11,044,353 </Td> <Td> 10,830,783 </Td> <Td> 10,318,311 </Td> <Td> 9,915,646 </Td> <Td> 9,431,796 </Td> <Td> 9,134,576 </Td> <Td> 8,518,957 </Td> <Td> 8,253,620 </Td> <Td> 8,021,383 </Td> <Td> 9,132,836 </Td> <Td> 8,915,292 </Td> <Td> 8,383,698 </Td> </Tr> <Tr> <Td> 26 </Td> <Td> Washington Dulles International Airport </Td> <Td> IAD </Td> <Td> Washington, D.C. </Td> <Td> VA </Td> <Td> 10,596,883 </Td> <Td> 10,363,918 </Td> <Td> 10,415,948 </Td> <Td> 10,570,993 </Td> <Td> 10,785,683 </Td> <Td> 11,043,829 </Td> <Td> 11,276,481 </Td> <Td> 11,132,098 </Td> <Td> 11,348,775 </Td> <Td> 11,789,441 </Td> <Td> 11,045,217 </Td> <Td> 13,032,502 </Td> </Tr> <Tr> <Td> 27 </Td> <Td> San Diego International Airport </Td> <Td> SAN </Td> <Td> San Diego </Td> <Td> CA </Td> <Td> 10,340,164 </Td> <Td> 9,985,739 </Td> <Td> 9,333,152 </Td> <Td> 8,878,772 </Td> <Td> 8,686,592 </Td> <Td> 8,465,683 </Td> <Td> 8,430,509 </Td> <Td> 8,453,854 </Td> <Td> 9,007,617 </Td> <Td> 9,138,116 </Td> <Td> 8,724,442 </Td> <Td> 8,628,648 </Td> </Tr> <Tr> <Td> 28 </Td> <Td> Daniel K. Inouye International Airport </Td> <Td> HNL </Td> <Td> Honolulu </Td> <Td> HI </Td> <Td> 9,656,340 </Td> <Td> 9,479,083 </Td> <Td> 9,463,000 </Td> <Td> 9,466,995 </Td> <Td> 9,210,270 </Td> <Td> 8,643,494 </Td> <Td> 8,740,077 </Td> <Td> 8,739,389 </Td> <Td> 9,013,440 </Td> <Td> 10,393,929 </Td> <Td> 9,855,838 </Td> <Td> 9,784,404 </Td> </Tr> <Tr> <Td> 29 </Td> <Td> Tampa International Airport </Td> <Td> TPA </Td> <Td> Tampa </Td> <Td> FL </Td> <Td> 9,194,576 </Td> <Td> 9,150,414 </Td> <Td> 8,531,561 </Td> <Td> 8,267,752 </Td> <Td> 8,216,153 </Td> <Td> 8,174,194 </Td> <Td> 8,137,222 </Td> <Td> 8,263,294 </Td> <Td> 8,871,917 </Td> <Td> 9,306,036 </Td> <Td> 9,187,865 </Td> <Td> 9,297,643 </Td> </Tr> <Tr> <Td> 30 </Td> <Td> Portland International Airport </Td> <Td> PDX </Td> <Td> Portland </Td> <Td> OR </Td> <Td> 9,071,154 </Td> <Td> 8,340,234 </Td> <Td> 7,878,760 </Td> <Td> 7,452,603 </Td> <Td> 7,142,620 </Td> <Td> 6,808,486 </Td> <Td> 6,582,227 </Td> <Td> 6,430,119 </Td> <Td> 7,090,526 </Td> <Td> 7,281,057 </Td> <Td> 6,956,712 </Td> <Td> 6,798,976 </Td> </Tr> </Table> <Tr> <Th> Rank (2016) </Th> <Th> Airports (large hubs) </Th> <Th> IATA Code </Th> <Th> Major city served </Th> <Th> State </Th> <Th> 2016 </Th> <Th> 2015 </Th> <Th> 2014 </Th> <Th> 2013 </Th> <Th> 2012 </Th> <Th> 2011 </Th> <Th> </Th> <Th> 2009 </Th> <Th> 2008 </Th> <Th> 2007 </Th> <Th> 2006 </Th> <Th> 2005 </Th> </Tr>

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