AirHint found the following cheapest return flights from London (LHR) to Keflavik (KEF)
in May 2025 (see full year ).
Return flights
03 May
- 06 May
Icelandair
$ 156
direct
20 May
- 24 May
Icelandair
$ 159
direct
09 May
- 13 May
Icelandair
$ 159
direct
16 May
- 20 May
Icelandair
$ 159
direct
18 May
- 25 May
Icelandair
$ 161
direct
02 May
- 06 May
Icelandair
$ 162
direct
15 May
- 24 May
Icelandair
$ 166
direct
02 May
- 04 May
Icelandair
$ 168
direct
17 May
- 19 May
Icelandair
$ 170
direct
08 May
- 13 May
Icelandair
$ 170
direct
27 May
- 02 Jun
Icelandair
$ 170
direct
28 May
- 02 Jun
Icelandair
$ 170
direct
31 May
- 05 Jun
Icelandair
$ 170
direct
27 May
- 05 Jun
Icelandair
$ 170
direct
29 May
- 05 Jun
Icelandair
$ 170
direct
27 May
- 04 Jun
Icelandair
$ 171
direct
31 May
- 07 Jun
Icelandair
$ 171
direct
31 May
- 04 Jun
Icelandair
$ 171
direct
27 May
- 11 Jun
Icelandair
$ 171
direct
20 May
- 04 Jun
Icelandair
$ 171
direct
Also check the deals for one-way flights from London to Keflavik in May .
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.