Phoenix officials have decided to end the city’s relationship with the Phoenix-Mesa Gateway Airport Authority.

The decision, effective June 30, 2024, means funding and other resources the city has contributed to Phoenix-Mesa Gateway Airport will come to an end, and that has amounted to more than $25 million since 2006, when Phoenix became a member of the authority.

Once Phoenix departs, the authority will be made up of  the cities of Mesa, Apache Junction, the towns of  Queen Creek and Gilbert and the Gila River Indian Community.

“PMGAA appreciates the resources, aviation experience and leadership that the City of Phoenix has provided during the past 17-plus years as a member of the authority,” J. Brian O’Neill, executive director and CEO, said in a joint statement with city officials.

He said the authority “remains committed to working together on issues of mutual interest in the future.”

Phoenix Councilman Jim Waring, who serves as vice chair of the authority’s board, said: “Given the Phoenix-Mesa Airport Authority’s strength and financial solvency, as well as Phoenix’s need to continue making financial investments in its own system of airports, now is the right time to conclude participation on the PMGAA board.”

City officials said in the statement the one-year notice will help ensure “an orderly transition and provide the authority ample time to account for the reduction in member contributions” linked to the departure.

“Phoenix maintains an incredibly productive relationship with the professional staff at the Phoenix-Mesa Gateway Airport, and we look forward to continuing to work in cooperation with the PMGAA to support the air transportation needs of our growing metropolitan area,” Chad Makovsky, Phoenix’s aviation services director, said.