This blog post analyzes the transportation options between Barcelona and Madrid, comparing flight and high-speed rail services. It discusses the resurgence of Vueling flights alongside existing airlines, the capacity and pricing of both flights and trains, and highlights sustainability concerns regarding short-haul flights in favor of rail. The author notes a decline in high-speed rail usage for the specific corridor despite overall growth in rail traffic in Spain, prompted partly by a recent train accident. The post ends with suggested further readings on the topic.