AirHint found the following cheapest return flights from Orlando (MCO) to Keflavik (KEF) in September 2025 (see full year).

Return flights

21 Sep - 27 Sep	Icelandair	direct
15 Sep - 20 Sep	Icelandair	direct
04 Sep - 14 Oct	KLM
14 Sep - 29 Sep	Air France
11 Sep - 18 Sep	Air France
01 Sep - 07 Sep	Delta
14 Sep - 29 Sep	Icelandair	direct
01 Sep - 07 Sep	Icelandair	direct

Also check the deals for one-way flights from Orlando to Keflavik in September.

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 Orlando to Keflavik in September from 392€

Return flights