WASHINGTON – The Transportation Department tentatively approved Friday four daily and six weekly flights between the U.S. and Havana, after airlines applied for slots that rivals had surrendered.

The proposed allocation calls for:

♦American Airlines and Delta Air Lines to each get a daily flight from Miami. American had proposed to use Boeing 737-800 aircraft with 160 seats. Delta proposed to use Airbus A320 aircraft with 160 seats.

♦Southwest Airlines to get a daily flight from Fort Lauderdale. The airline proposed to use either a 737-700 with 143 seats or a 737-800 with 175 seats.

♦JetBlue Airways to get a Sunday-through-Friday flight from Fort Lauderdale and a Saturday flight from Boston. JetBlue proposed to use Airbus A320 planes with 162 seats.

♦United Airlines and Mesa Airlines to share flights Sunday through Friday from Houston. United planned to use 737-800 planes with 154 seats and Mesa, operating as United Express, planned to use Embraer 175 aircraft with 76 seats, “as economic conditions warrant,” according to the proposal.

United already provided weekly Saturday flights from Houston to Havana.

“On behalf of United Airlines, we applaud the U.S. Department of Transportation’s decision to increase United service between Houston and Havana from Saturday-only to daily,” Steve Morrissey, United’s vice president of regulatory and policy, said Friday.

Applicants have 15 days to file objections to the distribution before the decisions become final.