Tampa International Airport officials had asked for $1.7 million in a claim they filed against British Petroleum Exploration and Production Inc. in August 2011. Last month, the airport revised its filing to request $28 million, airport spokeswoman Janet Zink said Tuesday.

The increase came after guidelines changed that could preclude the airport from recovering revenue from possible future claims in the case.

On Tuesday, Port of Tampa officials agreed to study whether to make a claim. The decision came after a recommendation by Hillsborough County commissioner and port authority board member Sandy Murman to study the issue.

"The port is the only one in Tampa not filing a claim," Murman said. "The airport, the city and the county are negotiating."

Tampa said last month it is seeking $50 million in damages, and Hillsborough County has hired a law firm to seek a claim.

The claims process has been ongoing for months, but port officials said there is still time to file for damages.

St. Pete-Clearwater International Airport has bucked the trend of filing for damages. The airport never filed a claim related to loss of air service because it did not suffer any passenger traffic loss, airport director Noah Lagos said.

Pinellas County has been awarded $500,000 in damages from BP's fund related to the spill. County commissioners last week decided to direct the money to the St. Petersburg-Clearwater Area Convention and Visitors Bureau, which is using the money to promote a food and wine festival and a TV show with celebrity chef Emeril Lagasse.

Dozens of private businesses in the area also are filing for compensation from the BP fund.

Though the oil spill never reached the Tampa Bay area, those filing claims have cited lost revenue and business from prospective visitors who canceled trips to the area.

The local visitors industry battled adverse publicity and erroneous reports that oil had reached Tampa Bay area shores.

BP has paid $8.5 billion in individual and business claims, $1.4 billion to governments and $310 million to others for tourism losses and for seafood marketing and testing.