What is the collective noun for aeroplanes?

There isn't a universally accepted collective noun for aeroplanes. However, some options that are used include:

* A fleet of aeroplanes (most common and formal)

* A squadron of aeroplanes (used for military aircraft)

* A gaggle of aeroplanes (informal and playful)

* A formation of aeroplanes (used for aircraft flying together)

You can also use more descriptive phrases like:

* A line of aeroplanes

* A group of aeroplanes

* A cluster of aeroplanes

Ultimately, the best collective noun will depend on the context and desired effect.