Seaborne Airlines (IATA: BB, ICAO: SBS, Call sign: SEABORNE) is a FAR Part 121 airline headquartered in San Juan, Puerto Rico. It was established in 1992 and operates domestic seaplane and land plane services among Puerto Rico, the U.S. Virgin Islands, the British Virgin Islands, Martinique, Dominica, Guadeloupe,St Kitts Nevis, St Maarten, and three stations in the Dominican Republic: La Romana, Punta Cana and Santo Domingo. In late 2008, Seaborne Airlines began land based flight service between St. Thomas, St. Croix, and San Juan TJIG Isla Grande Airport under the brand name "Seaborne Airshuttle." In January 2011, Seaborne Airlines began service to San Juan TJSJ Luis Munoz Marin International Airport. On December 18, 2013, Seaborne announced a headquarters change from Christiansted, St. Croix to San Juan, Puerto Rico, completed by March 2014. With this, adding service to Punta Cana and St. Maarten.

Seaborne Airlines operates scheduled services to the following destinations:

San Juan, Puerto Rico
San Juan, Puerto Rico
Vieques, Puerto Rico
Santiago de los Caballeros, Dominican Republic
Puerto Plata, Dominican Republic
Virgin Gorda, British Virgin Islands
Virgin Gorda, British Virgin Islands
Tortola, British Virgin Islands

The airline is headquartered on the 9th floor of the World Plaza Building in San Juan, Puerto Rico. Its previous headquarters were in Christiansted. In recent US Essential Air Service filings, Southern Airways Express has executed a letter of intent to purchase Seaborne Airlines.

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