The Pentagon building is seen in Arlington, Virginia, U.S. October 9, 2020. REUTERS/Carlos Barria

OTTAWA, Dec 4 (Reuters) - The U.S. State Department has approved the potential sale of air strike weapons and related equipment to Canada for an estimated cost of $2.68 billion, the Pentagon said on Thursday.

The principal contractors for the sale will be Boeing Co and RTX Corp, the Pentagon said in a statement.

(Reporting by Ismail Shakil in Ottawa and Bhargav Acharya in Toronto; Editing by Ryan Patrick Jones)