AirHint found the following cheapest return flights from London (LON) to Keflavik (KEF)
in May 2025 (see full year ).
Return flights
11 May
- 21 May
easyJet
$ 94
direct
14 May
- 21 May
easyJet
$ 97
direct
06 May
- 21 May
Fly Play
$ 110
direct
11 May
- 13 May
Fly Play
$ 116
direct
11 May
- 24 May
Fly Play
$ 116
direct
07 May
- 11 May
easyJet
$ 119
direct
12 May
- 13 May
Fly Play
$ 120
direct
06 May
- 13 May
Fly Play
$ 120
direct
07 May
- 12 May
Fly Play
$ 120
direct
12 May
- 17 May
Fly Play
$ 120
direct
29 May
- 29 Jun
Fly Play
$ 163
direct
30 May
- 04 Jun
Fly Play
$ 175
direct
29 May
- 04 Jun
Fly Play
$ 176
direct
28 May
- 04 Jun
easyJet
$ 178
30 May
- 15 Jun
Fly Play
$ 189
direct
30 May
- 08 Jun
Fly Play
$ 189
direct
30 May
- 03 Jun
Fly Play
$ 189
direct
29 May
- 05 Jun
Fly Play
$ 194
direct
28 May
- 04 Jun
easyJet
$ 194
direct
30 May
- 14 Jun
Fly Play
$ 195
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.