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

Return flights

23 Sep - 10 Oct	Hawaiian Airlines
21 Sep - 29 Sep	Alaska Airlines
23 Sep - 14 Oct	Hawaiian Airlines
30 Sep - 14 Oct	Alaska Airlines
05 Sep - 14 Sep	Alaska Airlines
23 Sep - 08 Oct	Hawaiian Airlines
23 Sep - 05 Oct	Hawaiian Airlines
22 Sep - 05 Oct	Hawaiian Airlines
30 Sep - 09 Oct	Hawaiian Airlines
25 Sep - 05 Oct	Hawaiian Airlines
21 Sep - 05 Oct	Hawaiian Airlines
26 Sep - 09 Oct	Hawaiian Airlines

Also check the deals for one-way flights from Spokane 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 Spokane to London in September from $707

Return flights