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

Return flights

07 Apr - 12 May	Norwegian
09 Apr - 09 May	Norwegian
10 Apr - 10 May	Wizz Air Malta
08 Apr - 13 May	Air China
13 Apr - 27 Apr	Air China
10 Apr - 25 Apr	Air China
17 Apr - 30 Apr	Air China
11 Apr - 28 Apr	Air China
08 Apr - 29 Apr	Air China
13 Apr - 28 Apr	Air China
11 Apr - 30 Apr	Air China
11 Apr - 26 Apr	Air China
06 Apr - 30 Apr	Air China
23 Apr - 30 Apr	Air China
21 Apr - 12 May	Air China
18 Apr - 02 May	Air China
08 Apr - 08 May	Air China
26 Apr - 14 May	Air China
27 Apr - 10 May	Air China
30 Apr - 17 May	Air China

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 486€

Return flights