Cheapest one-way flights from London to Seoul in September from $410

Best time to book flights for London (LHR) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest one-way flights from London (LHR) to Seoul (ICN) in September 2025 (see full year).

One-Way flights

03 Sep British Airways
11 Sep British Airways
22 Sep China Southern
08 Sep China Southern
17 Sep China Southern
19 Sep China Southern
10 Sep British Airways
05 Sep British Airways
13 Sep China Southern
04 Sep British Airways

Also check the deals for return flights from London to Seoul in September.

Skyscanner

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 Seoul

Cheap car rent in Seoul