Taxis are metered so it depends on where you’re going. A taxi to the Prudential Center in the Back Bay would be about $30 including the $7.50 airport fee and tunnel toll.

The Silver line trolleybus stops at all airport termnals and goes through the tunnel to South Station where you can change for the Red Line to other places. Or free Massport shuttle buses take you to the Blue Line station, with trains to downtown and other lines. The buses have wheelchair lifts, most subway stations have elevators. See the map linked below for details. The cash fare is $2, less if you plan to travel multiple times and get a Charlie card at the Blue line station.

For a more fun experience. Try the Water Shuttles. You take the #66 logan airport free shuttle bus to the water taxi terminal and then you pay like $10 to cross the harbor.

Water Taxis
Three water taxi businesses operate at the Boston Logan Airport dock with more than a dozen vessels between them. Water taxis function like land taxis – passengers can board a water taxi waiting at the dock or call ahead for a reservation. If no water taxi is present, they can be called using one of the call boxes at the top of the gangway or by telephone. Hours of operation, rates, and contact information for each water taxi service is listed below.

City Water Taxi
Boston Harbor Water Taxi
Rowes Wharf Water Transport

MAP OF WATER SHUTTLE/TAXIS TO LOGAN
http://www.massport.com/logan/pic/Water_Map_lg608.jpg

Boston Harbor Water Taxi

Sail with Captain John Ryan in his nineteenth year of water transportation service to Logan Airport. Boston Harbor Water Taxi operates year-round on-call water taxi service between the Logan dock and landings in Boston Harbor serving the following destinations:
Logan Airport and the nearby Hyatt Harborside Hotel
Black Falcon Cruise Terminal ÂÂ
Anthony’s Pier 4 Restaurant
Bank of America Music Pavilion
Barking Crab Restaurant
Baystate Cruises Provincetown ferry
EDIC dock
Boston Convention and Exhibition Center (BCEC)
Boston Harbor Islands, including Spectacle Island
Boston Westin Waterfront Hotel
Central Wharf at New England Aquarium
Children’s Museum
Fan Pier / Moakley Federal Courthouse
Financial District
Sargent’s Wharf
Seaport Hotel
World Trade Center

Hours of Operation: Boston Harbor Water Taxi operates year-round, on-call service seven days a week from 7:00 AM to 7:00 PM

Fares: The standard adult fare is $10.00 per passenger one-way. Children under 12 are free. Tickets are sold on board the boat.

From Logan Airport: If a water taxi is not present at the Logan dock, call Boston Harbor Water Taxi at (617) 593-9168 to summon a water taxi vessel.

To Logan Airport: Hail a Boston Harbor Water Taxi as you would a land taxi by calling (617) 593-9168 or see the concierge at your hotel. After hours service and group rates  are available.

City Water Taxi

City Water Taxi operates a fleet of ten boats that provide year round board-and-go water taxi service, linking the Logan dock with eighteen landings in Boston Harbor. It serves the following destinations:
Logan Airport and the nearby Hyatt Harborside Hotel
Black Falcon Cruise Terminal
Long Wharf serving State Street, the Marriott Long Wharf Hotel, Quincy Market/Faneuil Hall, and the North End
Marriott Residence Inn at Tudor Wharf
Bank of America Pavilion in South Boston
World Trade Center in the South Boston Waterfront, serving the Seaport Hotel and the Boston Convention and Exhibition Center
Anthony’s Pier 4 in the South Boston Waterfront
Pier 4 in Charlestown serving the USS Constitution and the Navy Yard
Fan Pier/Moakley Federal Courthouse on the Fort Point Channel, serving South Station
Lewis Wharf in the North End
Burroughs Wharf in the North End
Lovejoy Wharf serving North Station and the Bank North Garden
Shipyard Quarters Marina/Pier 8
Boston Harbor Shipyard and Marina
Water Boat Marina and Yacht Haven Marina
Black Falcon Cruise Terminal and
Barking Crab Restaurant
The service operates seven days per week in all seasons. Water Taxi boats are fully covered and heated in the winter.

Hours of Operation:

April 1 – December 31
Monday through Saturday – 7:00 a.m. to 10:00 p.m.
Sunday- 7:00 a.m. to 8:00 p.m.

January 1 – March 31
Seven days a week – 7:00 a.m. to 7:00 p.m.

Fares: The standard adult fare is $10.00 per passenger one-way to/from Logan and $17.00 per passenger round trip. Children 12 and under ride free with paying adults. Tickets are sold on board the boat (major credit cards are accepted). Temporary luggage storage is available upon request.
From Logan Airport :If a water taxi is not present at the Logan dock, call City Water Taxi at (617) 422-0392 or use the checkerboard call box in front of the pavilion to summon a water taxi vessel.

To Logan Airport: Hail a City Water Taxi as you would a land taxi by calling (617) 422-0392 or see the /concierge at your hotel (landings at the Seaport Hotel, Marriott Long Wharf, and Residence Inn are all equipped with call boxes

For more information call (617) 422-0392, or visit http://www.citywatertaxi.com.

Rowes Wharf Water Transport

Rowes Wharf Water Transport provides year-round passenger water transportation throughout Boston Harbor waterfront, including exclusive water taxi service between Rowes Wharf/Boston Harbor Hotel and Logan International Airport. Our boats are covered, comfortable, heated, and fully upholstered. We offer a wide variety of vessels, group and advance sale discounts, free luggage storage at Rowes Wharf, and direct service to the foll