AirHint found the following cheapest return flights from Oakland (OAK) to London (LGW) in September 2025 (see full year).

Return flights

10 Sep - 29 Sep	Spirit Airlines
22 Sep - 28 Sep	Spirit Airlines
09 Sep - 15 Sep	Spirit Airlines
24 Sep - 06 Oct	Spirit Airlines
26 Sep - 01 Oct	Spirit Airlines
03 Sep - 30 Sep	Spirit Airlines
22 Sep - 14 Oct	Icelandair
30 Sep - 07 Oct	Icelandair
24 Sep - 08 Oct	Icelandair
23 Sep - 07 Oct	Icelandair
08 Sep - 15 Sep	Icelandair
02 Sep - 12 Sep	Icelandair
30 Sep - 10 Oct	Icelandair
01 Sep - 15 Sep	Icelandair
01 Sep - 08 Sep	Icelandair
15 Sep - 29 Sep	Icelandair
25 Sep - 06 Oct	Icelandair
25 Sep - 23 Oct	Icelandair
01 Sep - 05 Sep	Icelandair
26 Sep - 05 Oct	Icelandair

Also check the deals for one-way flights from Oakland 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 Oakland to London in September from $628

Return flights