Cheapest return flights from London to Bangkok in April from $625

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

Return flights

01 Apr - 18 Apr Scandinavian Airlines
02 Apr - 18 Apr Scandinavian Airlines
09 Apr - 11 May Air China
29 Apr - 13 May SWISS
30 Apr - 11 May SWISS
10 Apr - 23 Apr Air China
07 Apr - 20 Apr Scandinavian Airlines
07 Apr - 24 Apr Scandinavian Airlines
07 Apr - 26 Apr Scandinavian Airlines
28 Apr - 12 May Austrian Airlines
21 Apr - 12 May Air China
06 Apr - 09 Apr Air China
09 Apr - 21 May Air China
07 Apr - 03 May Air China
23 Apr - 12 May SWISS
30 Apr - 19 May SWISS
23 Apr - 15 May SWISS
04 Apr - 25 Apr Scandinavian Airlines
04 Apr - 26 Apr Scandinavian Airlines
16 Apr - 30 Apr Oman Air

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

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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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