AirHint found the following cheapest return flights from Boston (BOS) to Keflavik (KEF)
in August 2025 (see full year ).
Return flights
29 Aug
- 12 Sep
Fly Play
$ 358
direct
14 Aug
- 19 Aug
Fly Play
$ 368
direct
14 Aug
- 18 Aug
Fly Play
$ 368
direct
21 Aug
- 27 Aug
Fly Play
$ 372
direct
30 Aug
- 12 Sep
Fly Play
$ 381
direct
29 Aug
- 02 Sep
Fly Play
$ 386
direct
07 Aug
- 18 Aug
Fly Play
$ 389
direct
29 Aug
- 03 Sep
Fly Play
$ 392
direct
28 Aug
- 02 Sep
Fly Play
$ 393
direct
02 Aug
- 06 Aug
Fly Play
$ 394
direct
17 Aug
- 21 Aug
Fly Play
$ 399
direct
20 Aug
- 24 Aug
Fly Play
$ 401
direct
06 Aug
- 16 Aug
Fly Play
$ 410
direct
04 Aug
- 11 Aug
Fly Play
$ 413
direct
08 Aug
- 17 Aug
Icelandair
$ 416
direct
29 Aug
- 04 Sep
Fly Play
$ 418
direct
Also check the deals for one-way flights from Boston 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.