Travel Warnings:
Travel State Gov
Transportation Security Administration
US Travel Security
Travel Abroad
Travel Warnings

Passport:
US Passport

Health:
Travel Health
Vessel Sanitation Program
World health organization

Customs:
Security Checkpoint Wait Times
US Customs
U.S. Embassies, Consulates, and Diplomatic Missions

Flight Info:
Airport Status
Track Flight Status
Domestic Flight Delay
Flight Delay Information - Alaska & Hawaii

Weather:
Beach Temperatures
National Weather Service
Perry-Castañeda Library Map Collection

Time:
Official US Time Zone
The World Clock - Time Zones
World Time Zones

Currency:
Calculator

Internet Resources:
JiWire's WiFi Hotspot Locations
Cyber Cafes Worldwide