AirHint found the following cheapest return flights from London (LON) to St. John's (YYT) in September 2026 (see full year).

Return flights

15 Sep - 18 Sep	Ryanair
14 Sep - 21 Sep	Ryanair
09 Sep - 14 Sep	Ryanair
01 Sep - 17 Oct	Ryanair
08 Sep - 13 Sep	Air Transat
09 Sep - 15 Sep	Ryanair
09 Sep - 14 Sep	WestJet	direct
13 Sep - 20 Sep	Ryanair

Also check the deals for one-way flights from London to St. John's in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to St. John's in September from $657

Return flights