AirHint found the following cheapest return flights from Seoul (ICN) to London (LHR) in March 2026 (see full year).

Return flights

10 Mar - 15 Mar	Royal Brunei
01 Mar - 31 Mar	Lufthansa
23 Mar - 31 Mar	Lufthansa
31 Mar - 07 Apr	KLM
24 Mar - 19 Apr	Air France
31 Mar - 14 Apr	KLM
01 Mar - 05 Mar	Lufthansa
02 Mar - 05 Mar	Lufthansa
03 Mar - 10 Mar	KLM
03 Mar - 11 Mar	KLM
06 Mar - 20 Mar	KLM
01 Mar - 01 Apr	Lufthansa
13 Mar - 22 Mar	Lufthansa
10 Mar - 17 Mar	KLM
30 Mar - 06 Apr	Finnair
31 Mar - 14 Apr	Asiana Airlines	direct
24 Mar - 19 Apr	Asiana Airlines	direct
01 Mar - 01 Apr	Asiana Airlines	direct
30 Mar - 06 Apr	Asiana Airlines	direct
28 Mar - 04 Apr	Air China

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

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 March from $665

Return flights