Every week we post hundreds of stories across various sectors in travel, connecting the dots across various global trends. We’re now highlighting the posts that tackle these global trends pointing towards the future of travel. This one looks at top airline travel trends. For all of our trends roundups, go here.

First-class and low-cost squeeze the middle: The Disappearance of the In-Flight Middle Class

Airlines create door service for luggage: JetBlue Joins Major Airlines in Offering Luggage Delivery Service

Consolidation drives fare cost up: Airfares Already Out of Control as U.S. Govt. Steps In Way Too Late

Ultra-low-cost airlines pop up everywhere: Aeroflot Works on Launching Russia’s First Low-Cost Carrier

Airlines lose passengers to rail travel: Amtrak Just Had its Best Month in History

Airlines lose passengers to rail travel: Airline Growth Drops in China as Travelers Flock to High-Speed Rail

Airlines encourage non-flight use of air miles: Frequent Flyer Miles Aren’t Just for Flights Anymore

Photo Credit: A view of two US Airways Express planes next to an American Airlines plane (background) at the Ronald Reagan Washington National Airport in Arlington County, Virginia, February 10, 2013. Mike Theiler / REUTERS