A company that offers helicopter sightseeing tours has begun service in Portland.

Seacoast Helicopters began service this week, offering tours of the city’s historic downtown, Casco Bay islands and lighthouses around Portland.

Bruce Cultrera, president and CEO, said the service is starting with one helicopter at the Portland International Jetport. More helicopters will be brought in, if needed.

Seacoast’s Portland-area tours include a 30-minute flight around Portland for $129 per person, an hourlong trip to Halfway Rock for $249 per person, and a two-hour Halfway Rock tour and picnic lunch for $399 per person.

Seacoast Helicopters has started offering regular sightseeing tours of the Casco Bay area. The company’s small Robinson helicopter can hold three passengers, and tours require a minimum of two people.