The fleet is believed to hold as much as 10 airplanes, and Mr. Buhari has been criticised for maintaining the large fleet.
Garba Shehu, the president’s senior special assistant on media and publicity, hinted in September that the number of aircraft in the fleet would be reduced.
The Office of the National Security Adviser advertised the sale of two airplanes on Tuesday.
The advert, published on page 35 of Tuesday’s edition of ThisDay Newspaper, said the aircraft up for sale were Falcon 7x and Hawker 4000.
The advertorial detailed the specification of the planes as well as their performance levels, indicating that they were in pretty good condition.
Interested buyers are advised to inspect the Falcon at the presidential wing of the Nnamdi Azikiwe International Airport, Abuja.
On the other hand, the Hawker 4000 can only be inspected at Cessna Zurich Citation Service Centre, Zurich, Switzerland.
The bids are to be quoted in dollars, the notice said.
“This is correct,” Mr. Shehu said. “The federal government has put up an advert for the sale of some of the aircraft on the presidential fleet.”