Our cheapest offers for flights from London Heathrow to Kos

Here you can compare cheap flights from London Heathrow (LHR) to Kos (KGS) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Kos. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
London Heathrow Kos	Outbound 31/01/26 1 Stopover (ATH) A30609, A30222 11h 50min	Return 03/02/26 1 Stopover (ATH) A30221, A30608 14h 40min	Aegean Airlines		£189
Best option London Heathrow Kos	Outbound 31/01/26 1 Stopover (ATH) A30609, A30222 11h 50min	Return 03/02/26 1 Stopover (ATH) A30223, A30608 10h 40min	Aegean Airlines		£208
London Heathrow Kos	Outbound 22/12/25 2 Stopovers (FRA, ATH) LH0911, LH1284, A30220 13h 35min	Return 10/01/26 2 Stopovers (ATH, MUC) A30227, LH1757, LH4200 25h 00min	Lufthansa, Aegean Airlines		£311
London Heathrow Kos	Outbound 31/01/26 1 Stopover (ATH) A30601, A30222 21h 50min	Return 03/02/26 1 Stopover (ATH) A30227, A30604 23h 20min	Aegean Airlines		£192
London Heathrow Kos	Outbound 31/01/26 1 Stopover (ATH) A30609, A30222 11h 50min	Return 03/02/26 1 Stopover (ATH) A30221, A30604 11h 20min	Aegean Airlines	?	£228
London Heathrow Kos	Outbound 31/01/26 1 Stopover (ATH) A30601, A30222 21h 50min	Return 03/02/26 1 Stopover (ATH) A30227, A30604 23h 20min	Aegean Airlines	?	£257
London Heathrow Kos	Outbound 22/12/25 1 Stopover (ATH) A30605, A30220 11h 05min	Return 10/01/26 1 Stopover (ATH) A30225, A30608 06h 35min	Aegean Airlines		£260
London Heathrow Kos	Outbound 22/12/25 1 Stopover (ATH) A30605, A30222 15h 05min	Return 10/01/26 1 Stopover (ATH) A30227, A30600 16h 35min	Aegean Airlines		£271
London Heathrow Kos	Outbound 20/03/26 2 Stopovers (MXP, ATH) BA0588, GQ0831, GQ0220 42h 20min	Return 17/04/26 2 Stopovers (ATH, BEG) A30221, A30976, JU0210 32h 35min	British Airways, Sky Express	?	£288
London Heathrow Kos	Outbound 22/12/25 2 Stopovers (ARN, ATH) SK1530, SK2933, A30222 27h 25min	Return 10/01/26 2 Stopovers (ATH, WAW) A30227, A30870, BA0849 27h 05min	SAS Scandinavian Airlines, Aegean Airlines	?	£304

Important flight information

Flight information: London Heathrow - Kos

Outbound and return from	188,97 £
Distance	2715 km
Departure airport	Airport London Heathrow (LHR)
Arrival airport	Airport Kos (KGS)
Destination country	Flights to Greece

Alternative routes to Greece

Flight London Heathrow - Athens from 132 £
Flight London Heathrow - Kefalonia Kefallinia from 312 £
Flight London Heathrow - Chania from 131 £
Flight London Heathrow - Preveza from 302 £
Flight London Heathrow - Santorini from 213 £
Flight London Heathrow - Mykonos from 272 £

Alternative flights to Kos

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Flight London Heathrow - Rabat from 182 £
Flight London Heathrow - Sulaimaniyah from 184 £