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

Return flights

15 May - 19 May	SWISS
12 May - 16 May	SWISS
15 May - 20 May	SWISS
16 May - 20 May	SWISS
15 May - 22 May	SWISS
09 May - 11 May	KLM
08 May - 12 May	KLM
08 May - 11 May	KLM
26 May - 29 May	KLM
18 May - 21 May	KLM
30 May - 02 Jun	KLM
26 May - 25 Jun	KLM
26 May - 26 Jun	KLM
27 May - 26 Jun	KLM
30 May - 01 Jun	KLM
28 May - 01 Jun	KLM
29 May - 01 Jun	KLM
24 May - 23 Jun	KLM
25 May - 25 Jun	KLM
27 May - 27 Jun	KLM

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

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 May from 217€

Return flights