Antigua-based Carib Aviation, which serves 10 destinations in the Eastern Caribbean, will cease operations on Sept. 30.
The impact will be felt heaviest on Montserrat, which has no other air service to fall back on.
The carrier said that rising fuel costs and the recent short-notice resignations of seven pilots is forcing it out of the skies. The majority of the pilots were recruited by regional airline LIAT, Carib officials said.
Under the terms of a marketing agreement that took effect in August between the two carriers, Carib's flights could be booked through LIAT's res system, website and call center. Although no Carib Aviation reservations are being taken beyond Sept. 30, bookings made before Sept. 8 for travel after Sept. 30 remain valid.
Customers should contact the tourist board of the country from which they are flying for further information, according to Frankie Francois, Carib Aviation's CEO.
Carib Aviation has a fleet of eight turboprop aircraft.
Flight reductions began Sept. 12 when Carib Aviation suspended service to Dominica, Nevis, St. Kitts and Anguilla. The carrier will fly three daily roundtrips between Antigua and Montserrat and two between Antigua and Barbuda until Sept. 30.
While most of the islands have other regional air options, such as LIAT and Winair, Montserrat has none. However, Montserrat's tourism officials are confident that a solution can be worked out. Chief Minister Lowell Lewis is in talks with the Antigua government, Carib Aviation officials and other private sector parties to ensure air service.
"I wish to reassure the traveling public that they will be able to get to and from Montserrat after Sept. 30 and not to cancel their travel plans," Lewis said. "My government is working on a number of access options, which will be announced shortly."
Ernestine Cassell, Montserrat's director of tourism, said that the tourist office "has been flooded with calls from travelers holding reservations for this fall and into the winter season. We're assuring them that they will be able to get to Montserrat."
For now, the tourist office is taking contact information for each traveler and will get back to them "once these problems are sorted out -- and they will be," Cassell said.
Ferry service between Antigua and Montserrat is one of the options under consideration, but Cassell would prefer to see ferry service "as a backup to regularly scheduled air service."