Departure month: any January 2021 February 2021 March 2021 April 2021 May 2021 June 2021 July 2021 August 2021 September 2021 October 2021 November 2021 December 2021 Sorted by: day of search price departure city Brussels - Kos outbound: 16/04/2021 1 stop (5h25m)Aegean Airlines return: 23/04/2021 1 stop (8h55m)Olympic Air $499 Verify Athens - Kos outbound: 14/08/2021 direct (55m)Olympic Air return: 21/08/2021 direct (55m)Olympic Air $294 Verify