Many airlines limited capacity to allow for middle seats to remain open so that passengers could physically distance in the months after the pandemic was first declared, but as science continues to show that the risk of contracting COVID-19 in-flight is low, demand increases and airlines struggle to stay in business, this trend is quickly going away. As of December, Delta Air Lines and JetBlue are the only U.S. airlines blocking seats. JetBlue will end all capacity limits beginning January 8, 2021, while
Delta has committed to limiting capacity on flights departing now until March 30, 2021.