AirHint found the following cheapest return flights from Cheju (CJU) to London (LGW) in December 2025 (see full year).
Return flights
| 16 Dec - 01 Jan | China Eastern | ||
| 07 Dec - 14 Dec | China Eastern | ||
| 06 Dec - 13 Dec | Jin Air | ||
| 19 Dec - 31 Dec | Singapore Airlines |
Also check the deals for one-way flights from Cheju to London in December.
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