AirHint found the following cheapest return flights from Southend (SEN) to Seoul (ICN) in December 2025 (see full year).

Return flights

10 Dec - 14 Jan	easyJet
11 Dec - 30 Dec	easyJet
10 Dec - 29 Dec	easyJet
09 Dec - 31 Dec	easyJet
10 Dec - 31 Dec	easyJet
03 Dec - 16 Dec	easyJet
01 Dec - 09 Dec	easyJet
03 Dec - 14 Dec	easyJet
30 Dec - 15 Jan	easyJet
09 Dec - 07 Jan	easyJet
06 Dec - 31 Jan	easyJet
08 Dec - 31 Dec	easyJet
04 Dec - 14 Dec	easyJet
13 Dec - 31 Dec	easyJet
11 Dec - 07 Jan	easyJet
29 Dec - 18 Jan	easyJet
10 Dec - 07 Jan	easyJet
28 Dec - 18 Jan	easyJet
13 Dec - 09 Jan	easyJet
14 Dec - 09 Jan	easyJet

Also check the deals for one-way flights from Southend to Seoul in December.

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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Cheapest return flights from Southend to Seoul in December from 556€

Return flights