The domestic air mail rate was five cents per ounce from October 1, 1946 through December 31, 1948.

This colorful cover was sent by air between Western Union offices in 1948.

On October 1, 1946 airmail rates for territories and possesions became the same as for the mainland.

This postcard was sent airmail from Puerto Rico to the mainland in 1947. Postcards did not receive their own airmail rates until January 1, 1949.