AirHint found the following cheapest return flights from Indianapolis (IND) to London (LGW) in October 2025 (see full year).

Return flights

21 Oct - 11 Nov	Spirit Airlines
22 Oct - 11 Nov	Spirit Airlines
07 Oct - 14 Oct	Spirit Airlines
02 Oct - 09 Oct	Spirit Airlines
01 Oct - 08 Oct	Spirit Airlines
22 Oct - 10 Nov	Spirit Airlines
22 Oct - 09 Nov	Spirit Airlines
22 Oct - 06 Nov	Spirit Airlines
18 Oct - 26 Oct	Spirit Airlines
22 Oct - 07 Nov	Spirit Airlines
29 Oct - 08 Nov	Spirit Airlines
02 Oct - 17 Oct	Spirit Airlines
21 Oct - 12 Nov	Turkish Airlines
22 Oct - 12 Nov	Turkish Airlines

Also check the deals for one-way flights from Indianapolis to London in October.

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 Indianapolis to London in October from $475

Return flights