Cheapest return flights from London to Prague in September from $240

Best time to book flights for London (LCY) to Prague (PRG) flights at AirHint

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

Return flights

03 Sep - 08 Sep KLM
04 Sep - 08 Sep KLM
26 Sep - 29 Sep KLM
20 Sep - 22 Sep KLM
11 Sep - 15 Sep KLM
02 Sep - 05 Sep KLM
01 Sep - 05 Sep KLM
15 Sep - 18 Sep KLM
23 Sep - 08 Oct SWISS
13 Sep - 16 Sep SWISS
06 Sep - 10 Sep SWISS

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

Skyscanner

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