AirHint found the following cheapest return flights from St. John's (YYT) to London (LGW) in September 2025 (see full year).

Return flights

24 Sep - 08 Oct	WestJet
24 Sep - 15 Oct	WestJet
03 Sep - 10 Sep	WestJet	direct
03 Sep - 24 Sep	WestJet	direct
17 Sep - 24 Sep	WestJet	direct
08 Sep - 24 Sep	WestJet	direct
10 Sep - 24 Sep	WestJet	direct
24 Sep - 08 Oct	WestJet	direct
24 Sep - 18 Oct	WestJet	direct
10 Sep - 06 Oct	WestJet	direct
17 Sep - 10 Oct	WestJet	direct
17 Sep - 11 Oct	WestJet	direct
17 Sep - 03 Oct	WestJet	direct
20 Sep - 11 Oct	WestJet	direct
17 Sep - 07 Oct	WestJet
10 Sep - 17 Sep	WestJet	direct
08 Sep - 15 Sep	WestJet	direct
23 Sep - 26 Sep	WestJet
23 Sep - 27 Sep	WestJet
09 Sep - 13 Sep	WestJet

Also check the deals for one-way flights from St. John's to London 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 St. John's to London in September from $355

Return flights