AirHint found the following cheapest return flights from Houston (IAH) to Keflavik (KEF)
in May 2025 (see full year ).
Return flights
01 May
- 06 May
Spirit Airlines
$ 442
13 May
- 20 May
Spirit Airlines
$ 542
21 May
- 29 May
Spirit Airlines
$ 543
14 May
- 21 May
Spirit Airlines
$ 557
20 May
- 28 May
Spirit Airlines
$ 562
14 May
- 25 May
Spirit Airlines
$ 569
07 May
- 15 May
Spirit Airlines
$ 572
08 May
- 15 May
Spirit Airlines
$ 575
16 May
- 23 May
Frontier Airlines
$ 578
25 May
- 02 Jun
Spirit Airlines
$ 586
06 May
- 13 May
Spirit Airlines
$ 587
27 May
- 03 Jun
Spirit Airlines
$ 590
28 May
- 05 Jun
Spirit Airlines
$ 609
30 May
- 07 Jun
Spirit Airlines
$ 648
24 May
- 04 Jun
Spirit Airlines
$ 675
27 May
- 04 Jun
Spirit Airlines
$ 694
26 May
- 03 Jun
Spirit Airlines
$ 724
24 May
- 01 Jun
Frontier Airlines
$ 744
Also check the deals for one-way flights from Houston 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.
