NB: the following websites are just a sample of the many websites related to travel and travel-planning. There are many more available that you may find at least as useful as these, or more so. Their inclusion on this list (or the exclusion of others) does not represent any type of endorsement by the instructor of the course, Luther College, or any other individual or organization.
Passports, Consular Information Sheets, Travel Warnings, Travel Tips, Safety
http://travel.state.gov/
Know Before You Go (US Customs)
http://www.cbp.gov/xp/cgov/travel/vacation/kbyg/
Tourism Information (Government Offices)
www.towd.com
Tourism Information (Publication-related Travel Sites)
www.fodors.com
www.frommers.com
www.lonelyplanet.com
www.ricksteves.com
Airline Seat Selection
http://www.seatguru.com/
Airport Codes
http://www.orbitz.com/shared/pagedef/content/air/airportCodes.jsp?popupsDisabled=false
Airports
www.quickaid.com
Flight Conditions
www.fly.faa.gov
Underground/Subway
http://www.amadeus.net/home/new/subwaymaps/en/
Travel Arrangements
www.expedia.com
www.travelocity.com
us.venere.com
www.tripadvisor.com
www.hotels.com
www.orbitz.com
Health
www.cdc.gov/travel
http://www.lonelyplanet.com/health/
Travel Insurance
www.insuremytrip.com
Currency Exchange Rates
www.x-rates.com
www.xe.com
ATM Locator
http://dir.yahoo.com/Business_and_Economy/Finance_and_Investment/Banking/Automated_Teller_Machines__ATMs_/ATM_Locators/
Cell Phone Rental
www.travelcell.com
Time/Date
www.timeanddate.com/worldclock
Weather
www.worldclimate.com
www.accuweather.com
Packing Tips
http://dir.yahoo.com/Recreation/Travel/Travel_Tips_and_Tools/Packing/
http://www.verber.com/mark/travel/packing.html
Metric Conversions
www.sciencemadesimple.com/conversion.html