Hopes for quick passage of a stopgap bill to extend current federal aviation programs were jeopardized Thursday morning when two Democratic senators said they would not agree to fast-track the legislation unless they first secured a commitment to vote on eliminating more flights into and out of Ronald Reagan Washington National Airport.

The bill retains language that would expand long-haul flights at Ronald Reagan Washington National Airport by five round trips per day.

The Senate has passed a $105 billion bill designed to improve air safety and customer service for air travelers, a day before the law governing the Federal Aviation Administration expires