Most travellers find the cheapest round-trip flights to London Stansted Airport when choosing a flight departing in September.
Most of our users find that booking their departure to London Stansted Airport on a Sunday is the cheapest. Conversely, departing on a Friday seems to be the most expensive.
In general, when looking for the cheapest flight to London Stansted Airport, our data indicates that afternoon flights are the most cost-effective. noon flights tend to be the most expensive.