Cancellations from May through July have hit at least $5 million, said Ross Birch, executive director of the island's tourism board.
Some cruise ships have even decided not to go into port on the island, with a handful even refusing to land on Kona, which is about 100 miles away from the volcano.
In the evacuated Leilani Estates neighborhood of about 1,500 people, explosions could be heard on Sunday as steam rose from cracks in the roads.
"There has been no noticeable increase in bookings to the Island of Hawaii since the volcano eruption, however, it is an important reason customers chose to vacation on the island", said Jack Richards, president and CEO of Pleasant Holidays.
Big Island hotel bookings for summer months are off nearly 50% from previous year as daily news images of lava flows and burning homes scare off visitors to the island of 200,000 people, Rob Birch executive director of the Island of Hawaii Visitor Bureau told journalists on a conference call.
On Monday, Hawaii County Civil Defense issued a warning about sulfur dioxide gas emitting from vents formed by the volcano.
The lava was moving at a rate of about 20 yards an hour, or.01 miles per hour, in the direction of the ocean, said the agency in a release.
Richard Schott, 34, watched as lava bubbled over a ridgeline behind some trees.
She said her team isn't quite sure what caused Tuesday's slightly more intense ash emissions.
Kilauea is the youngest and most active Hawaiian shield volcano, located on the southern part of the Island of Hawai'i, known as Big Island.
"In a way, it's kind of exciting to see what's going on and be this close to it", Christian Ricks said.
(USGS) This image is from a research camera mounted in the observation tower at the Hawaiian Volcano Observatory.
Dozens of homes have been destroyed since eruptions began 10 days ago and officials have ordered the evacuations of almost 2,000 residents in the lower Puna district of the Big Island, home to around 187,000 people. "It seems that the system up at the summit has been what we call somewhat open, relieving that pressure", Michelle Coombs, a geologist who is the scientist-in-charge at the Alaska Volcano Observatory, told reporters in Hilo, Hawaii.
Plant workers last week as a precaution removed 50,000 gallons (189,265 liters) of a flammable liquid stored at the site.
Fox Save 'Gotham' With Fifth And Final Season Order
In the meantime, we get to keep guessing and asking questions because at least we know Gotham is coming back for another season. Signing off, Mazouz thanked network Fox for the opportunity to "finish strong", and the fans for "keeping this show alive".