Cheapest one-way flights from London to Madrid in December from $133

AirHint found the following cheapest one-way flights from London (LCY) to Madrid (MAD) in December 2025 (see full year).

One-Way flights

31 Dec British Airways direct
26 Dec British Airways direct
15 Dec British Airways direct
16 Dec Iberia direct
29 Dec KLM
28 Dec KLM
30 Dec KLM
29 Dec Iberia direct
28 Dec British Airways direct
17 Dec KLM

Also check the deals for return flights from London to Madrid 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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