AirHint found the following cheapest return flights from London (LHR) to Keflavik (KEF)
in August 2025 (see full year ).
Return flights
21 Aug
- 27 Aug
Scandinavian Airlines
$ 194
18 Aug
- 26 Aug
Scandinavian Airlines
$ 213
28 Aug
- 04 Sep
Scandinavian Airlines
$ 213
20 Aug
- 26 Aug
Scandinavian Airlines
$ 215
24 Aug
- 28 Aug
British Airways
$ 220
direct
24 Aug
- 27 Aug
British Airways
$ 225
24 Aug
- 26 Aug
British Airways
$ 232
18 Aug
- 20 Aug
Scandinavian Airlines
$ 234
29 Aug
- 05 Sep
Scandinavian Airlines
$ 235
21 Aug
- 26 Aug
Scandinavian Airlines
$ 239
22 Aug
- 27 Aug
Scandinavian Airlines
$ 249
23 Aug
- 01 Sep
Icelandair
$ 258
direct
17 Aug
- 22 Aug
British Airways
$ 264
direct
22 Aug
- 01 Sep
Icelandair
$ 264
direct
30 Aug
- 04 Sep
British Airways
$ 267
24 Aug
- 02 Sep
British Airways
$ 269
28 Aug
- 01 Sep
Scandinavian Airlines
$ 272
31 Aug
- 06 Sep
Scandinavian Airlines
$ 272
28 Aug
- 01 Sep
Icelandair
$ 275
direct
29 Aug
- 01 Sep
Icelandair
$ 276
direct
Also check the deals for one-way flights from London to Keflavik in August .
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.