Sometimes it is possible to identify the specific aircraft depicted on a stamp. This section has a list of such identified aircraft, alongwith details such as its registration no, year of manufacture, construction reference, any notable incident, its last known status, etc. Also included are photos of the actual aircraft, and links to external sites from where the info was obtained.
Some aircraft are already well-known or famous in their own right, for instance the Wright Flyer. These have a page of their own, with stamps depicting them listed, plus some history and photographs of the actual aircraft.
For the rest, pick the country and browse through the stamps listed. Click on any of them to see their identifiers & additional information.
December 1903 : Wright Flyer - first heavier-than-air powered aircraft to fly
February 1909 : AEA Silver Dart - first controlled powered flight in Canada
August 1909 : Grade monoplane - first powered aircraft to fly in Germany
May 1919 : Curtiss NC (NC-4) - first aircraft to fly across the Atlantic
June 1919 : Vickers Vimy - first non-stop Atlantic crossing by Alcock & Brown
May 1927 : Spirit of St Louis - first solo nonstop transatlantic flight
April 1928 : Junkers W 33 "Bremen" - first east-west crossing of the Atlantic
June 1928 : First trans-Pacific flight from US to Australia, and first crossing of Tasman Sea (Sep 1928)
June 1931 : First around-the-world flight by Wiley Post in the Winnie Mae
July 1937 : Amelia Earhart's disappearance during her round-the-world attempt
October 1947 : Bell X-1 - first supersonic flight
December 1998 : Antonov An-225 Mriya - heaviest aircraft ever built (as of March 2020)
July 2016 : G-JOEY - the famous Trislander of Guernsey (retd in June 2015)
July 2016 : Solar Impulse 2 - first circumnavigation by piloted fixed-wing aircraft using only solar power