AirHint found the following cheapest return flights from Madrid (MAD) to Keflavik (KEF)
in August 2025 (see full year ).
Return flights
26 Aug
- 09 Sep
Iberia Express
$ 244
26 Aug
- 07 Sep
Iberia Express
$ 249
26 Aug
- 03 Sep
Iberia Express
$ 277
27 Aug
- 10 Sep
Fly Play
$ 279
direct
26 Aug
- 01 Sep
Iberia Express
$ 283
29 Aug
- 10 Sep
Fly Play
$ 290
direct
26 Aug
- 04 Sep
Iberia Express
$ 294
26 Aug
- 30 Aug
Iberia Express
$ 300
24 Aug
- 07 Sep
Fly Play
$ 306
direct
26 Aug
- 29 Aug
Iberia Express
$ 307
25 Aug
- 27 Aug
Iberia
$ 307
23 Aug
- 26 Aug
Iberia Express
$ 317
26 Aug
- 28 Aug
Iberia Express
$ 317
24 Aug
- 27 Aug
Fly Play
$ 318
direct
18 Aug
- 27 Aug
Ryanair
$ 321
29 Aug
- 07 Sep
easyJet
$ 323
24 Aug
- 08 Sep
Ryanair
$ 324
23 Aug
- 27 Aug
Iberia Express
$ 329
22 Aug
- 27 Aug
Fly Play
$ 330
direct
19 Aug
- 26 Aug
Iberia
$ 332
Also check the deals for one-way flights from Madrid 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.