Cheapest return flights from London to Keflavik in December from $100

Best time to book flights for London (LTN) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from London (LTN) to Keflavik (KEF) in December 2025 (see full year).

Return flights

10 Dec - 18 Dec easyJet direct
10 Dec - 16 Dec easyJet direct
09 Dec - 13 Dec easyJet direct
01 Dec - 05 Dec easyJet direct
11 Dec - 16 Dec easyJet direct
03 Dec - 05 Dec easyJet direct
01 Dec - 06 Dec easyJet direct
03 Dec - 09 Dec easyJet direct
07 Dec - 09 Dec easyJet direct
02 Dec - 03 Dec easyJet direct
31 Dec - 06 Jan easyJet direct
12 Dec - 05 Jan easyJet direct
16 Dec - 05 Jan easyJet direct
10 Dec - 01 Jan easyJet direct
26 Dec - 26 Jan easyJet direct
30 Dec - 06 Jan easyJet
29 Dec - 17 Jan Ryanair
12 Dec - 04 Jan easyJet
30 Dec - 06 Jan easyJet direct
30 Dec - 01 Jan easyJet

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

Skyscanner

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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