AirHint found the following cheapest return flights from London (LON) to Bangkok (BKK) in April 2026 (see full year).

Return flights

04 Apr - 28 Apr	Ryanair
10 Apr - 28 Apr	Ryanair
10 Apr - 10 May	Ryanair
10 Apr - 21 Apr	Ryanair
12 Apr - 10 May	Wizz Air UK
10 Apr - 03 May	Ryanair
10 Apr - 07 May	Ryanair
11 Apr - 07 May	Ryanair
12 Apr - 28 Apr	Wizz Air UK
20 Apr - 20 May	China Eastern
06 Apr - 02 May	China Eastern
22 Apr - 23 May	China Eastern
22 Apr - 02 May	China Eastern
22 Apr - 11 May	China Eastern
12 Apr - 21 Apr	Wizz Air UK
04 Apr - 21 Apr	Ryanair
07 Apr - 28 Apr	Norwegian Air Sweden AOC
07 Apr - 21 Apr	Norwegian Air Sweden AOC
11 Apr - 21 Apr	Ryanair
04 Apr - 07 Apr	Ryanair

Also check the deals for one-way flights from London to Bangkok 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 Bangkok in April from 399€

Return flights