AirHint found the following cheapest return flights from London (LCY) to Prague (PRG) in April 2026 (see full year).

Return flights

07 Apr - 14 Apr	SWISS
22 Apr - 29 Apr	SWISS
14 Apr - 21 Apr	SWISS
11 Apr - 13 Apr	KLM
11 Apr - 14 Apr	KLM
20 Apr - 23 Apr	KLM
18 Apr - 22 Apr	KLM
15 Apr - 23 Apr	KLM
08 Apr - 15 Apr	SWISS
08 Apr - 14 Apr	SWISS
30 Apr - 06 May	SWISS
30 Apr - 05 May	SWISS
29 Apr - 04 May	SWISS
30 Apr - 11 May	KLM
30 Apr - 04 May	SWISS
30 Apr - 03 May	SWISS
30 Apr - 10 May	SWISS
29 Apr - 02 May	KLM

Also check the deals for one-way flights from London to Prague in April.

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 April from $261

Return flights