State Department Travel Warnings and Related Information —
http://travel.state.gov/travel/cis_pa_tw/cis_pa_tw_1168.html

CDC Travel Health Information —  http://wwwn.cdc.gov/travel/

US VISIT – Requirements for Travelers to the US —
http://www.dhs.gov/files/programs/content_multi_image_0006.shtm

World Health Organization Travel Information —  http://www.who.int/topics/travel/en/

Secure Flight – Information You Must Give the Government Before You Can Fly —
http://www.tsa.gov/what_we_do/layers/secureflight/index.shtm

ESTA – Requirements for Travel to the US from Visa Waiver Countries —
https://esta.cbp.dhs.gov/esta/esta.html?_flowExecutionKey=
_c053CEE52-B926-89C7-BE34-3E60384159B9_k0406F3CA-E4C7-EC0D-44B0-A2308FEB96BF

Western Hemisphere Travel Initiative –
Requirements for Travel in the Western Hemisphere to and from the US —
http://www.dhs.gov/files/programs/gc_1200693579776.shtm

Passports —  http://travel.state.gov/passport/passport_1738.html

Commerce Department Travel and Tourism Information —  http://tinet.ita.doc.gov/

Transportation Security Administration —  http://www.tsa.gov/

Senate Aviation Subcommittee —
http://commerce.senate.gov/public/index.cfm?
FuseAction=Subcommittees.Subcommittee&Subcommittee_ID=
eb104593-aeec-4264-a2de-c5affb405db5

House Aviation Subcommittee —  http://transportation.house.gov/subcommittees/aviation.aspx

ETTSA – European Travel and Technology Services Association —  http://www.ettsa.eu/

ASTA – American Society of Travel Agents —  http://www.asta.org/

Amadeus —  http://www.Amadeus.com

CheapTickets —  http://www.CheapTickets.com

Expedia —  http://www.Expedia.com

Galileo —  http://www.Galileo.com

Lastminute —  http://www.Lastminute.com

Orbitz Worldwide —  http://www.orbitz.com

Priceline —  http://www.Priceline.com

Sabre Holdings —  http://www.SabreHoldings.com

Travelocity —  http://www.Travelocity.com

Travelport —  http://www.Travelport.com

Vegas —  http://www.Vegas.com

WorldSpan —  http://www.WorldSpan.com