Many Airport authorities are adding Free Wi-Fi high speed internet access as an amenity for travelers. Some offer access in the entire airport while others may limit access to specified terminal or waiting areas. In addition, many airline club lounges may have their own free access available.
United States
American Airlines Admirals Clubs - must enter a valid club card number to get access.
United Airlines - Service in the airline's 27 Red Carpet Clubs and 5 International First Class lounges is free for members.
Continental Airlines offers Free wireless high speed internet access to members in 22 Presidents Club locations in major airports around the USA.
US Airways Club lounges, with a free Dividend Miles account or an access code card.
Northwest WorldClubs
Alaska Airlines Clubs
FBO's (Fixed Base Operators - the service stations for corporate aircraft) are located at almost all airports large and small and many are offering unrestricted Wi-Fi service in their facilities.
Alabama
Birmingham International Airport - BirminghamAlaska
Huntsville Airport - Huntsville
Madison County Executive Airport - Huntsville
Mobile Regional Airport - Mobile
Montgomery Regional Airport (Dannelly Field) - Montgomery
Northwest Alabama Regional Airport - Muscle Shoals
Anchorage Airport - AnchorageArizona
Ketchikan International Airport - Ketchikan
Valdez Municipal Arpt - Valdez
Phoenix Sky Harbor International Airport - PhoenixArkansas
Tucson International Airport - Tucson
Valle Airport - Valle
Yuma International - Yuma
Fort Smith Regional Airport - Fort SmithCalifornia
Little Rock National Airport - must accept terms of use for access - Little Rock
Texarkana Airport - Texarkana
Meadows Field, WM Thomas Terminal - BakersfieldColorado
Chico Municipal Airport - Chico
Arcata/Eureka Airport - Eureka
Fresno Yosemite International Airport - Fresno
Hayward Airport - Hayward
Livermore Airport - Livermore
Long Beach Airport - Long Beach
Air Canada Maple Leaf Lounge - LAX
Modesto City-County Airport - Modesto
Oakland Int. Airport - Oakland
Palm Springs International Airport - Palm Springs
Redding Municipal Airport - Redding
BSAir at the Reedley Muni Airport - Reedley
Sacramento International Airport - Sacramento
Lindberg Field - San Diego
San Diego International Airport - San Diego
Mineta San Jose International Airport - San Jose
Santa Barbara Airport - Santa Barbara
Santa Maria Airport - Santa Maria
Sonoma County Airport - Santa Rosa
Santa Ynez Airport - Santa Ynez
Sardy Field - AspenConnecticut
Centennial Airport - Centennial
Colorado Springs Airport - Colorado Springs
Cortez Municipal Airport - Cortez
Denver International Airport - Denver
Grand Junction Regional Airport - Grand Junction
Eagle (Vail) Airport
Tweed Airport - New HavenFlorida
Bradley International Airport - Windsor Locks
Daytona Beach Airport - signal availability reported in Ticketing Area - Daytona BeachGeorgia
Ft. Lauderdale/Hollywood International Airport - all terminals - Ft. Lauderdale
Southwest Florida International Airport - Ft.Myers
Okaloosa Regional Airport - Fort Walton Beach
Gainesville Regional Airport - Gainesville
Jacksonville Airport - Jacksonville
Key West International - Key West
LaBelle Municipal Airport - LaBelle
Melbourne International Airport - Melbourne
Orlando International Airport - all public areas and the "Cell Phone" parking lot - Orlando
Palm Beach International - Palm Beach
Pensacola Gulf Coast Regional Airport - Pensacola
Sarasota-Bradenton International Airport - Sarasota
Tallahassee Airport - Tallahassee
Tampa International - main building and both satellite terminals - Tampa
Palm Beach International Airport - West Palm Beach
Ben Epps Airport - AthensHawaii
Augusta Regional Airport - Augusta
Brunswick Golden Isle Airport - Brunswick
Columbus Airport - Columbus
Fulton County Airport (FTY) - Raytheon Aircraft Services Terminal
Savannah/Hilton Head International Airport - Savannah
Valdosta Regional Airport - Valdosta
Honolulu Airport-Gate 13 - HonoluluIdaho
BOI Aiport - BoiseIllinois
Idaho Falls Airport - Idaho Falls
Nez Perce County Regional Airport - Lewiston
Central Illinois Regional Airport - Bloomington/NormalIndiana
University of Illinois Willard Airport - Champaign/Urbana
Quad City International Airport - Moline
Peoria Regional Airport - Peoria
Rockford Airport - Rockford
Capital Airport - Springfield
Evansville Regional Airport - EvansvilleIowa
Fort Wayne International Airport - Fort Wayne (free Cat5/RJ45 access too)
Smith Field Airport - Fort Wayne
Indianapolis International Airport - new terminal area - Indianapolis
Montgomery Aviation - Indianapolis Executive Airport - Zionsville
CY Aviation, Boone Airport - BooneKansas
Eastern Iowa Regional Airport - Cedar Rapids
Dubuque Regional Airport - Dubuque
Sioux City Airport - business center and JetSun Aviation facility - Sioux City
Waterloo Airport - Waterloo
Hays Regional Airport - HaysKentucky
Wichita Mid-Continent Airport - Wichita
CVG Airport - HebronLouisiana
Bluegrass Airport - Lexington
Lafayette Regional Airport - LafayetteMaine
Lake Charles Airport - Lake Charles
Louis Armstong International - New Orleans
Shreveport Regional Airport - Shreveport
Bangor International Airport - BangorMaryland
Hagerstown Municipal Airport - HagerstownMassachusetts
Logan International Airport - BostonMichigan
Bishop International Airport - FlintMinnesota
Gerald R. Ford International Airport- Grand Rapids
Ford Airport - Kingsford/Iron Mountain
Capital City Airport - Lansing
Sawyer International Airport - Marquette
Muskegon County Airport - Muskegon
Pellston Regional Airport - Pellston
Beltrami County Airport - BemidjiMississippi
Duluth Int. Airport - Duluth
International Falls Airport - International Falls
Rochester International Airport - Rochester
South St Paul Airport - South St Paul
Golden Triangle Regional Airport - ColumbusMissouri
Gulfport/Biloxi International Airport
Hattiesburg-Bobby L. Chain Municipal Airport - no commercial flights - Hattiesburg
Jackson Airport - Jackson
Tupelo Regional Airport - Tupelo
Taney County Airport - BransonMontana
Columbia Regional Airport - Columbia
Joplin Regional Airport - ask ticket agent for access location - Joplin
Kansas City International Airport - Kansas City
Springfield-Branson Airport - Springfield
Bozeman Gallatin Airport - BozemanNebraska
Great Falls International Airport - Great Falls
Helena Regional Airport - Helena
Glacier International Airport - after security area - Kalispell
Missoula International Airport - Missoula
Central Nebraska Regional Airport - Grand IslandNevada
Amigo's King's Airpark - Lincoln
Eppley Field - Omaha
Henderson Executive Airport - HendersonNew Hampshire
McCarran Airport - Las Vegas
North Las Vegas Airport
Reno-Tahoe International Airport - Reno
Manchester, Boston Regional Airport - ManchesterNew Jersey
Atlantic City Airport - Atlantic CityNew Mexico
Albuquerque International Sunport/Airport - AlbuquerqueNew York
Los Alamos County Airport - Los Alamos
Taos Municipal Airport - Taos
Albany International Airport - AlbanyNorth Carolina
Binghamton Airport - Binghamton
Elmira-Corning Regional Airport - Elmira
JetBlue Airways - Terminal 6 - JFK Airport - Jamaica, Queens
Long Island MacArthur Airport - Islip
Tompkins County Regional Airport - Ithaca
Rochester Airport - Rochester
Syracuse International - Syracuse
Charlotte Douglas International Airport - ask at Info Desk for access area info - CharlotteNorth Dakota
Asheville Regional Airport - Fletcher
Albert J. Ellis Airport - Jacksonville
Kinston Airport - Kinston
New Bern Airport - New Bern
Wilmington International Airport - Wilmington
Bismarck Municipal Airport - general aviation lounge - BismarckOhio
Hector International Airport - Fargo
Grand Forks Airport - Grand Forks
Minot Airport - Minot
Akron Airport - AkronOklahoma
Cleveland Hopkins Int. Airport - Cleveland
Ohio State University Airport - Columbus
Port Columbus International Airport - Columbus
Dayton International Airport - Dayton
Youngstown-Warren Regional Airport - Vienna
Tulsa Int. Airport - TulsaOregon
Eugene Airport - EugenePennsylvania
Rogue Valley International-Medford Airport - Medford
Southwest Oregon Regional Airport - North Bend
Portland International Airport - Main Level - Portland
Redmond Airport - Redmond
Lehigh Valley International Airport - AllentownNorth Carolina
Erie International Airport - Erie
Harrisburg International Airport - Harrisburg
Arnold Palmer Regional Airport - Latrobe
Pocono Mountains Municipal Airport - Mt Pocono
Philadelphia International Airport - free for college students with ID, must obtain code at Information Counter - Philadelphia
Pittsburgh Airport - Pittsburgh
Brandywine Airport - West Chester
Wilkes-Barre/Scranton Airport - Wilkes-Barre/Scranton
Charlotte-Douglas International Airport - CharlotteSouth Carolina
Fayetteville Regional Airport - Fayetteville
Columbia Metropolitan Airport - ColumbiaSouth Dakota
Horry County Airport - Conway
Florence Regional Airport - Florence
Greenville/Spartanburg Airport
Myrtle Beach Airport - Myrtle Beach
Aberdeen Regional Airport - AberdeenTennessee
Rapid City Airport - Rapid City
Sioux Falls Regional Airport - Sioux Falls
Chan Gurney Airport - Yankton
Tri-Cities Regional Airport - BlountvilleTexas
Chattanooga Metropolitan Airport - Chattanooga
Collegedale Airport - Collegedale
Tricities Airport - Kingsport
KnoxAir at TYS - McGee-Tyson Airport and DKX - Island Home Airport - Knoxville
Abilene Regional Airport - AbileneUtah
Rick Husband Inernational Airport - Amarillo
Harrison Aviation - Arlington Municipal Airport - Arlington
Brownsville-South Padre Island International Airport - Brownsville
Easterwood Airport - College Station
Corpus Christi International Airport - Corpus Christi
Admiral's Clubs - members only - DFW - Dallas/Ft.Worth
Valley International Airport - Harlingen
Killeen-Fort Hood Regional Airport - Killeen
East Texas Regional Airport - Longview
Lubbock International Airport - Lubbock
McAllen-Miller International Airport - McAllen
San Angelo Municipal Airport - San Angelo
San Antonio International Airport - San Antonio
Tyler Pounds Regional Airport - Tyler
Salt Lake City Airport - Salt Lake CityVermont
Burlington International Airport - South BurlingtonVirginia
Tri-Cities Airport - BristolWashington
Charlottesville-Albemarle Airport - terminal area
Leesburg Executive Airport - Leesburg
Lynchburg Regional Airport - Lynchburg
Newport News/Williamsburg Airport - Newport News
Richmond Airport - Richmond
Roanoke Airport - Roanoke
Shenandoah Valley Regional Airport - Weyers Cave
Bellingham International Airport - BellinghamWest Virginia
Pangborn Field Airport - East Wenatchee
Grant County Airport - Moses Lake
Tri-Cities Airport - Pasco
Pullman Moscow Airport- Pullman
Seattle-Tacoma International Airport - Seattle
Walla`Walla Regional Airport - Walla Walla
Yeager Airport - CharlestonWisconsin
Tri-State Airport - Huntington
Outagamie County Regional Airport - AppletonWyoming
Austin Straubel Airport - in terminal, beyond security point - Green Bay
KOEO FBO's - Top Dog Aviation (Northeast Hangar Base), Ward Aviation (Northeast Hangar Base), Terminal Building (South West Side) - Osceola
Rhinelander/Oneida County Airport
Natrona County International Airport - Casper
Cheyenne Regional Airport - Cheyenne