American Airlines dominates many of the routes to Latin America with its hub in Miami. It's run charters to Cuba for more than 15 years, according to spokeswoman Martha Pantin. It now operates 20 weekly flights from Miami to Havana, Holguin, Santa Clara and Cienfuegos and from Tampa to Havana and Holguin.
JetBlue Airways started flying Cuba charters in September 2011. It's a very small part of the airline's business; just three weekly flights on Airbus A320s with 50 to 80 customers, either to Havana or Santa Clara.
CEO David Barger told The Associated Press last year that the charters are a way of "just understanding what happens, if in fact there's a normalization."
Delta Air Lines, which operated more than 240 charter flights between October 2011 and December 2012, said it has no immediate plans to fly to Cuba. But, spokesman Anthony Black noted that "having served there through our charter operations, the groundwork has been laid for us to possibly serve the market if an opportunity becomes available."
Airlines are granted the right to fly international routes through bilateral agreements between U.S. and foreign governments. A similar agreement would need to be reached with Cuba first. There is one dating back to 1953 — it was last updated on July 30, 1957 — that allows specific routes from New York, Washington D.C., Houston, New Orleans and the Florida cities of Miami, St. Petersburg, Tampa, Fort Lauderdale and West Palm Beach.
The one immediate change for licensed travelers: they will now be able to return to the U.S. with $400 in Cuban goods, including tobacco and alcohol. Limited amounts of Cuban cigars might be the new hot souvenir.