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

Return flights

03 Apr - 12 Apr	Air China
02 Apr - 11 Apr	Air China
01 Apr - 11 Apr	Air China
03 Apr - 10 Apr	Air China
27 Apr - 04 May	Air China
04 Apr - 11 Apr	Air China
21 Apr - 06 May	Air China
27 Apr - 11 May	Air China
18 Apr - 23 Apr	China Southern
03 Apr - 09 Apr	Air China
23 Apr - 14 May	Air China
03 Apr - 15 Apr	Air China
02 Apr - 09 Apr	Air China
29 Apr - 13 May	Air China
19 Apr - 27 Apr	Air China
24 Apr - 04 May	Air China
26 Apr - 04 May	Air China
30 Apr - 09 May	Air China
25 Apr - 09 May	Air China
25 Apr - 02 May	Air China

Also check the deals for one-way flights from Seoul to London 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 London

Cheap car rent in London

Cheapest return flights from Seoul to London in April from 452€

Return flights