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

Return flights

07 Apr - 19 May	China Southern
07 Apr - 31 May	China Southern
07 Apr - 25 Apr	Scandinavian Airlines
07 Apr - 27 Apr	Scandinavian Airlines
11 Apr - 01 May	Ryanair
11 Apr - 26 Apr	Ryanair
22 Apr - 14 May	Air China
19 Apr - 10 May	Air China
23 Apr - 12 May	Air China
21 Apr - 13 May	Air China
20 Apr - 11 May	Air China
21 Apr - 10 May	Air China
21 Apr - 19 May	Air China
11 Apr - 27 Apr	Ryanair
11 Apr - 30 Apr	Ryanair
10 Apr - 25 Apr	Scandinavian Airlines
07 Apr - 26 Apr	Scandinavian Airlines
11 Apr - 28 Apr	Ryanair
11 Apr - 25 Apr	Ryanair
11 Apr - 29 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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from London to Bangkok in April from 456€

Return flights