AirHint found the following cheapest return flights from London (LCY) to Prague (PRG) in July 2025 (see full year).

Return flights

29 Jul - 28 Aug	KLM
29 Jul - 05 Aug	SWISS
29 Jul - 07 Aug	SWISS
30 Jul - 02 Aug	KLM
31 Jul - 06 Aug	SWISS
30 Jul - 06 Aug	SWISS
29 Jul - 01 Aug	KLM
22 Jul - 12 Aug	Lufthansa
31 Jul - 04 Aug	SWISS
22 Jul - 28 Jul	KLM
31 Jul - 05 Aug	SWISS
23 Jul - 28 Jul	KLM
28 Jul - 31 Jul	KLM
23 Jul - 31 Jul	KLM
23 Jul - 26 Jul	KLM
23 Jul - 30 Jul	KLM
22 Jul - 26 Jul	KLM
22 Jul - 29 Jul	KLM
18 Jul - 23 Jul	SWISS
18 Jul - 24 Jul	SWISS

Also check the deals for one-way flights from London to Prague 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 London to Prague in July from $289

Return flights