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

Return flights

23 Jul - 30 Jul	Icelandair
27 Jul - 02 Aug	Icelandair
24 Jul - 31 Jul	Icelandair
27 Jul - 03 Aug	Ryanair
23 Jul - 25 Jul	Icelandair
24 Jul - 28 Jul	Icelandair	direct
16 Jul - 25 Jul	Icelandair
28 Jul - 01 Aug	Icelandair
23 Jul - 25 Jul	Icelandair	direct
22 Jul - 25 Jul	Icelandair
17 Jul - 25 Jul	Icelandair
21 Jul - 27 Jul	Ryanair
23 Jul - 27 Jul	Lufthansa
31 Jul - 04 Aug	Ryanair
27 Jul - 03 Aug	Icelandair	direct
28 Jul - 01 Aug	Icelandair	direct
31 Jul - 04 Aug	Icelandair	direct

Also check the deals for one-way flights from Glasgow to Keflavik in July.

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 July from $458

Return flights