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

Return flights

09 Apr - 30 Apr	Air China
19 Apr - 30 Apr	Air China
14 Apr - 27 May	Air China
11 Apr - 01 May	Air China
15 Apr - 21 May	Air China
15 Apr - 26 May	Air China
21 Apr - 28 Apr	Air China
20 Apr - 30 Apr	Air China
17 Apr - 30 Apr	Air China
07 Apr - 14 May	Air China
08 Apr - 07 May	Norwegian
17 Apr - 09 May	Air China
15 Apr - 02 May	Air China
20 Apr - 27 Apr	Air China
17 Apr - 26 Apr	Air China
15 Apr - 13 May	Air China
21 Apr - 21 May	Air China
19 Apr - 26 Apr	Air China
09 Apr - 26 Apr	Air China
15 Apr - 25 Apr	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 504€

Return flights