In March, both airlines changed their interisland fare structures to create three new one-way rates — $67, $75 and $85, depending on seat availability.

As of Saturday, Hawaiian's rates went up $10.50 per seat, to $77.50, $85.50 and $95.50. The increase was a response to Aloha's fare increase earlier Saturday, Hawaiian spokesman Keoni Wagner said.

Federal officials have suspended recently added security fees for the summer. But Aloha spokesman Stu Glauberman said the airline still needed to raise its rates.

"Security costs continue to impact our operations. That's a factor," he said. "... We're still not making any money interisland, and we've got to get to break even."

Hawaiian had been adding a $15 surcharge for Lana'i and Moloka'i flights and some flights that included two legs. With the new rate change, the surcharge has been lowered to $10, Wagner said.

Hawaiian filed for Chapter 11 bankruptcy protection in March and a trustee is expected to be named within two weeks, but it continues to operate flights.

Travel agent Rachel Shimamoto was looking to book the cheapest, $67 airline seats for Boy Scouts hoping to fly to O'ahu next month. But the closest rates she could find on Aloha and Hawaiian had suddenly jumped.

And then Shimamoto, vice president of Travel Ways, got angry when she realized both airlines had raised their rates without telling anyone.

"It's wrong," Shimamoto said. "It was such a rude awakening. They never came out with a public announcement or anything."

Both airline spokesmen said they did not know why the new rates were not announced.

The increases mean that Joanne Le will have to find extra money somehow for the two-day, Boy Scout leadership conference she's helping to organize at the Pupukea campground run by the Aloha Council Boy Scouts of America.

The conference June 11 and 12 involves 27 scouts. They and some staff members are paying $175 registration fees intended to cover airfare for 18 Neighbor Island participants and all other costs.

The money left over from the airfare expenses was expected to pay for food, training materials and equipment.

"We were thinking $140, maybe $150 at the most" for airfare, Le said. "We got some $155 seats, but the majority were much higher than that."

Now she doesn't know where the money will come from to cover the other expenses.