"We simply ran out of time to find a qualified buyer or secure continued financing for our passenger business," said Aloha President David Banmiller in a statement. "We had no choice but to take this action."
Aloha has suffered since Phoenix-based Mesa Air Group Inc. launched a new interisland carrier called go! airlines in 2006, triggering a local airfare war.
Banmiller didn't mentioned go! by name in his statement, but did blame the company's demise on rival companies.
"Unfortunately, unfair competition has succeeded in driving us out of business," he said.
Rising fuel prices, which have forced other airlines to raise fares and look for ways to cut expenses, also made it difficult for Aloha to operate.
Aloha said tickets for flights after Monday will not be honored. It said it is working to have United Airlines accommodate passengers with tickets for Aloha's mainland to Hawaii flights. It hopes to seat those with interisland tickets on Hawaiian Airlines.
Aloha has canceled Monday flights from Hawaii to the West Coast and between several cities in California and Nevada. It's last day for interisland travel will be Monday.
Aloha advised passengers who don't want to fly another airline and who want a refund to contact their travel agents or credit card companies. Those who paid by cash or check may file a claim in bankruptcy court.
The shutdown will affect about 1,900 employees. The company said air cargo services are to continue.
A Seattle company on Thursday offered to buy Aloha's cargo operations for an undisclosed amount. But Saltchuk Resources Inc. said it wasn't interested in taking over Aloha's passenger business.
Aloha Airlines was founded in 1946.