People walk away from Brussels airport after Tuesday's terrorist attack. Analysts say the violence may reduce travel for a while but the industry should bounce back. Geert Vanden Wijngaert/AP hide caption

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Geert Vanden Wijngaert/AP

Passengers walk through the terminal as they head to their flights at Reagan National Airport in Arlington, Va., on Dec. 23, 2015. Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

As Oil Plummets, Cheap Jet Fuel Means Better Travel Deals

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Fuel prices have plummeted this year, but airfares have remained high. The International Air Transport Association estimates that the world's airlines will rake in nearly $20 billion in profits this year. Brennan Linsley/AP hide caption

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Brennan Linsley/AP

The Year In Air Travel: Packed Planes And More Perks — For A Price

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A plane takes off over a departure board at Hartsfield-Jackson Airport in Atlanta last November. Airlines say they expect an uptick in Thanksgiving travel this year. David Goldman/AP hide caption

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David Goldman/AP

Air traffic connections from West Africa to the rest of the world: While Guinea, Liberia and Sierra Leone don't have many flights outside the region, Nigeria is well-connected to Europe and the U.S. PLOS Currents: Outbreaks hide caption

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PLOS Currents: Outbreaks

Passengers packed the waiting hall Tuesday at Hongqiao Railway Station, which services a terminal at Shanghai Hongqiao International Airport. Johannes Eisele/AFP/Getty Images hide caption

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Johannes Eisele/AFP/Getty Images

Coming in December: the eTrack and the eTag, from Air France and KLM. The innovations let you drop off your bags without checking them, and track them throughout your journey. Courtesy of FastTrack Co. hide caption

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Courtesy of FastTrack Co.

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

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Wong Maye-E/AP

A traveler walks by a Delta Airlines skycap kiosk at San Francisco International Airport. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Delta CEO Pushes For National Airline Policy That Lets 'Free Market Work'

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A Transportation Security Administration volunteer demonstrates a full-body scanner at Chicago's O'Hare International Airport in March 2010. Scott Olson/Getty Images hide caption

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Scott Olson/Getty Images

Tight quarters: Aboard a United Airlines Embraer-145, 50-passenger jet. (June 1, 2008 file photo taken at Dulles International Airport.) Paul J. Richards /AFP/Getty Images hide caption

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Paul J. Richards /AFP/Getty Images

Julie Capper stands with her hologram at Manchester International Airport. Julie and her hologram work in the same area — which has created some confusion. Courtesy of Manchester International Airport hide caption

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Courtesy of Manchester International Airport

Meet John and Julie: Holograms Beamed Into The Manchester Airport

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