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

Return flights

22 Jul - 29 Jul	British Airways
21 Jul - 01 Aug	British Airways
16 Jul - 28 Jul	Allegiant Air
16 Jul - 27 Jul	Spirit Airlines
04 Jul - 13 Jul	Spirit Airlines
14 Jul - 21 Jul	Spirit Airlines
03 Jul - 16 Jul	Spirit Airlines
02 Jul - 14 Jul	Spirit Airlines
19 Jul - 26 Jul	Allegiant Air
03 Jul - 06 Jul	Allegiant Air
08 Jul - 18 Jul	Spirit Airlines

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

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 July from $708

Return flights