A flypast is a ceremonial or honorific flight by an aircraft or group of aircraft. The term flypast is used in the United Kingdom and the Commonwealth. In the United States, the terms flyover and flyby are used.

Flypasts are often tied in with Royal or state events, anniversaries, celebrations - and occasionally funerary or memorial occasions. Sometimes flypasts occur in special situations, to honour someone or to celebrate certain types of aircraft. They have affinities with parades, of which they form the aerial component. Often they occur in purely display contexts at airshows, but it is the flypasts linked with civic, ceremonial and national pride, that imprint themselves on a nation's memory. Some flypasts have been described in broadcast and print media as "historic".

Flypasts are regularly featured in public and ceremonial life in the United Kingdom, where they function as a particular kind of aerial salute. They serve to show respect, display aircraft, showcase flying skills and as a form of entertainment to delight the public, for example, during their annual appearance after Trooping the Colour. Flypasts reflect milestones of national life; varying in scope from personal, to community and local, to military, to national. They may honour individuals in private or public life or commemorate happenings at a particular location. They are also used to honour aircraft. On occasions both small and large they may occur over land or sea, sometimes connected with memorial or thanksgiving services.

In Commonwealth countries, notably Singapore, Canada and Australia, they occur on national days and occasionally on anniversaries. They are seen more rarely in other territories.