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

Return flights

21 Apr - 29 Apr	KLM
07 Apr - 11 Apr	KLM
30 Apr - 04 May	KLM
03 Apr - 08 Apr	SWISS
17 Apr - 20 Apr	KLM
15 Apr - 19 Apr	KLM
21 Apr - 24 Apr	KLM
30 Apr - 03 May	KLM
27 Apr - 30 Apr	KLM
14 Apr - 17 Apr	KLM
03 Apr - 07 Apr	SWISS
10 Apr - 12 Apr	SWISS

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.

Book a cheap hotel in Prague

Cheap car rent in Prague

Cheapest return flights from London to Prague in April from $258

Return flights