Cheapest return flights from Denver to Keflavik in June from $514

Best time to book flights for Denver (DEN) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF) in June 2025 (see full year).

Return flights

25 Jun - 07 Jul WestJet
25 Jun - 02 Jul WestJet
04 Jun - 16 Jun WestJet
28 Jun - 03 Jul WestJet
27 Jun - 04 Jul WestJet
28 Jun - 06 Jul WestJet
23 Jun - 30 Jun WestJet
26 Jun - 03 Jul WestJet
20 Jun - 27 Jun Icelandair direct
23 Jun - 30 Jun Icelandair direct
17 Jun - 24 Jun Frontier Airlines
21 Jun - 28 Jun Icelandair direct
08 Jun - 15 Jun Icelandair direct
27 Jun - 04 Jul Icelandair direct
12 Jun - 22 Jun Icelandair direct
18 Jun - 30 Jun WestJet
28 Jun - 05 Jul WestJet
03 Jun - 10 Jun Frontier Airlines
30 Jun - 07 Jul Frontier Airlines
29 Jun - 06 Jul WestJet

Also check the deals for one-way flights from Denver to Keflavik in June.

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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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