Cheapest return flights from Portland to Keflavik in March from 496€

AirHint found the following cheapest return flights from Portland (PDX) to Keflavik (KEF) in March 2026 (see full year).

Return flights

28 Mar - 05 Apr Virgin Atlantic
02 Mar - 10 Mar British Airways
04 Mar - 12 Mar British Airways
09 Mar - 17 Mar British Airways
11 Mar - 19 Mar British Airways
16 Mar - 24 Mar British Airways
31 Mar - 08 Apr Finnair
24 Mar - 01 Apr Finnair
23 Mar - 31 Mar British Airways
31 Mar - 08 Apr Icelandair direct
10 Mar - 18 Mar Icelandair direct
14 Mar - 22 Mar Icelandair direct
17 Mar - 25 Mar Icelandair direct
21 Mar - 29 Mar Icelandair direct
24 Mar - 01 Apr Icelandair direct
28 Mar - 05 Apr Icelandair direct
30 Mar - 07 Apr British Airways
26 Mar - 03 Apr Icelandair direct
29 Mar - 06 Apr Air France
25 Mar - 02 Apr Air Canada

Also check the deals for one-way flights from Portland to Keflavik in March.

Skyscanner

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.