AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Keflavik (KEF) in August 2025 (see full year).

Return flights

08 Aug - 15 Aug	Air Canada
07 Aug - 14 Aug	Air Canada
13 Aug - 20 Aug	Air Canada
21 Aug - 03 Sep	Delta
22 Aug - 03 Sep	Air Canada
15 Aug - 23 Aug	Air Canada
11 Aug - 18 Aug	United
08 Aug - 18 Aug	United
09 Aug - 18 Aug	United
22 Aug - 03 Sep	Icelandair	direct
10 Aug - 17 Aug	Spirit Airlines
21 Aug - 03 Sep	Icelandair	direct
11 Aug - 18 Aug	Icelandair	direct
13 Aug - 20 Aug	Icelandair	direct

Also check the deals for one-way flights from Raleigh-durham 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.

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Cheapest return flights from Raleigh-durham to Keflavik in August from 365€

Return flights