A plane takes off from New York's John F. Kennedy International Airport on May 25. Airports want Congress to raise passenger fees to pay for improvements. Trevor Collens/AFP/Getty Images hide caption

itoggle caption Trevor Collens/AFP/Getty Images

Passengers from three West African countries will face screening for Ebola symptoms when they arrive at John F. Kennedy International Airport in New York. Travelers are seen here at a JFK checkpoint earlier this week. Four other airports will begin screening next week. JUSTIN LANE/EPA /LANDOV hide caption

itoggle caption JUSTIN LANE/EPA /LANDOV

The Butterfly Garden in Terminal 3 is just one of the pleasant diversions at the Changi airport in Singapore. Wong Maye-E/AP hide caption

itoggle caption Wong Maye-E/AP