The United States and Cuba on Tuesday signed a deal restoring commercial air traffic for the first time in five decades, allowing of dozens of new daily flights to bring hundreds of thousands more American travelers a year to the island as early as this fall.

Immediately after the signing, the U.S. Department of Transportation opened bidding by American air carriers on as many as 110 U.S.-Cuba flights a day — more than five times the current number. All flights operating between the two countries today are charters.