Cheapest return flights from London (LHR) to Keflavik (KEF), December

20 dates in December, from $ 176. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
1 Dec 8 Dec Icelandair
Direct Flight
1 Dec 4 Dec Icelandair
Direct Flight
9 Dec 16 Dec Icelandair
Direct Flight
8 Dec 15 Dec Icelandair
Direct Flight
5 Dec 6 Dec British Airways
Direct Flight
7 Dec 10 Dec Icelandair
Direct Flight
15 Dec 18 Dec Icelandair
Direct Flight
3 Dec 10 Dec British Airways
Direct Flight
8 Dec 12 Dec Icelandair
Direct Flight
12 Dec 16 Dec Icelandair
Direct Flight
30 Dec 5 Jan 2027 Scandinavian Airlines
31 Dec 4 Jan 2027 Scandinavian Airlines
26 Dec 5 Jan 2027 Scandinavian Airlines
26 Dec 4 Jan 2027 Scandinavian Airlines
23 Dec 4 Jan 2027 Icelandair
Direct Flight
21 Dec 4 Jan 2027 Icelandair
Direct Flight
28 Dec 4 Jan 2027 Scandinavian Airlines
29 Dec 4 Jan 2027 Scandinavian Airlines
22 Dec 4 Jan 2027 Icelandair
Direct Flight
31 Dec 1 Jan 2027 British Airways
Direct Flight
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Cheapest deals for the full year

Deals for one-way flights from London to Keflavik in December.

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Updated Oct 9, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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