The Senate passed a major aviation bill on Thursday, marking an end to a monthslong fight over whether to add more flights to the nation’s busiest runway.

Last month, negotiators in both chambers unveiled a compromise bill that would reauthorize the Federal Aviation Administration for another five years, but a provision to add 10 slots at Reagan National Airport prompted outrage from Washington, D.C.-area senators, who warned the flights would cause delays and a risk to public safety.