Cheapest return flights from London (LCY) to Keflavik (KEF), October

20 dates in October, from $ 436. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
14 Oct 20 Oct Lufthansa
28 Oct 12 Nov KLM
30 Oct 6 Nov KLM
13 Oct 20 Oct SWISS
30 Oct 5 Nov KLM
26 Oct 3 Nov KLM
14 Oct 16 Oct ITA Airways
14 Oct 19 Oct Lufthansa
28 Oct 3 Nov SWISS
29 Oct 3 Nov SWISS
21 Oct 25 Oct Lufthansa
27 Oct 1 Nov KLM
29 Oct 1 Nov KLM
30 Oct 1 Nov KLM
31 Oct 3 Nov SWISS
13 Oct 15 Oct SWISS
22 Oct 28 Oct SWISS
22 Oct 27 Oct SWISS
13 Oct 18 Oct SWISS
20 Oct 22 Oct SWISS
Powered by

Cheapest deals for the full year

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

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik International Airport

Updated Oct 10, 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.

Feel free to contact us with any feedback or request another flight research.