AirHint found the following cheapest return flights from Glasgow (GLA) to Keflavik (KEF) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep	easyJet
28 Aug - 02 Sep	easyJet
28 Aug - 01 Sep	easyJet
23 Aug - 27 Aug	Icelandair	direct
21 Aug - 27 Aug	easyJet
18 Aug - 26 Aug	Ryanair
26 Aug - 29 Aug	easyJet
21 Aug - 27 Aug	Icelandair	direct
15 Aug - 20 Aug	Icelandair	direct
12 Aug - 13 Aug	Icelandair
27 Aug - 31 Aug	easyJet
25 Aug - 28 Aug	Ryanair
20 Aug - 27 Aug	Icelandair	direct
27 Aug - 03 Sep	Icelandair	direct
07 Aug - 13 Sep	Ryanair
28 Aug - 01 Sep	Icelandair	direct
07 Aug - 13 Sep	Icelandair	direct
28 Aug - 02 Sep	Icelandair	direct

Also check the deals for one-way flights from Glasgow 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 Glasgow to Keflavik in August from $264

Return flights