Cheapest return flights from Cardiff to London in December from $279

AirHint found the following cheapest return flights from Cardiff (CWL) to London (LGW) in December 2025 (see full year).

Return flights

17 Dec - 19 Dec Ryanair
08 Dec - 09 Dec Vueling Airlines

Also check the deals for one-way flights from Cardiff to London in December.

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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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