€103 Cheap Flights London to Kos (LHR-KGS)

View €103 flight on Sun, 7 Sep 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Kos (KGS-Kos Island Intl.)

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Cheap flights from London to Kos (LHR-KGS)

Prices were available within the past 7 days and start at €103 for one-way flights and €174 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Fri, 29 Aug - Fri, 5 Sep
LHR
London
KGS
Kos
€174 Return, found 2 days ago
€174
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Fri, 29 Aug from London to Kos, returning Fri, 5 Sep, priced at €174 found 2 days ago
Brussels Airlines
Fri, 29 Aug - Fri, 5 Sep
LHR
London
KGS
Kos
€174 Return, found 2 days ago
€174
Return
found 2 days ago
Select Brussels Airlines flight, departing Fri, 29 Aug from London to Kos, returning Fri, 5 Sep, priced at €174 found 2 days ago
Austrian Airlines
Fri, 29 Aug - Fri, 5 Sep
LHR
London
KGS
Kos
€174 Return, found 2 days ago
€174
Return
found 2 days ago
Select Austrian Airlines flight, departing Fri, 29 Aug from London to Kos, returning Fri, 5 Sep, priced at €174 found 2 days ago
Austrian Airlines
Wed, 3 Sep - Mon, 8 Sep
LHR
London
KGS
Kos
€176 Return, found 6 days ago
€176
Return
found 6 days ago
Select Austrian Airlines flight, departing Wed, 3 Sep from London to Kos, returning Mon, 8 Sep, priced at €176 found 6 days ago
Lufthansa
Wed, 3 Sep - Mon, 8 Sep
LHR
London
KGS
Kos
€178 Return, found 6 days ago
€178
Return
found 6 days ago
Select Lufthansa flight, departing Wed, 3 Sep from London to Kos, returning Mon, 8 Sep, priced at €178 found 6 days ago
Lufthansa
Thu, 25 Sep - Mon, 29 Sep
LHR
London
KGS
Kos
€181 Return, found 23 hours ago
€181
Return
found 23 hours ago
Select Lufthansa flight, departing Thu, 25 Sep from London to Kos, returning Mon, 29 Sep, priced at €181 found 23 hours ago
Brussels Airlines
Fri, 29 Aug - Fri, 5 Sep
LHR
London
KGS
Kos
€187 Return, found 2 days ago
€187
Return
found 2 days ago
Select Brussels Airlines flight, departing Fri, 29 Aug from London to Kos, returning Fri, 5 Sep, priced at €187 found 2 days ago
Lufthansa
Fri, 29 Aug - Fri, 5 Sep
LHR
London
KGS
Kos
€188 Return, found 2 days ago
€188
Return
found 2 days ago
Select Lufthansa flight, departing Fri, 29 Aug from London to Kos, returning Fri, 5 Sep, priced at €188 found 2 days ago
Lufthansa
Fri, 29 Aug - Fri, 5 Sep
LHR
London
KGS
Kos
€188 Return, found 2 days ago
€188
Return
found 2 days ago
Select Lufthansa flight, departing Fri, 29 Aug from London to Kos, returning Fri, 5 Sep, priced at €188 found 2 days ago
Aegean
Thu, 9 Oct - Tue, 14 Oct
LHR
London
KGS
Kos
€242 Return, found 4 days ago
€242
Return
found 4 days ago
Select Aegean flight, departing Thu, 9 Oct from London to Kos, returning Tue, 14 Oct, priced at €242 found 4 days ago

Find the cheapest month to fly from London (LHR) to Kos (KGS)

January is typically the cheapest month to fly

From €133 - €683 per traveller.

Graph displaying average flight prices per month

London to Kos route information
Origin airport
Heathrow
Destination airport
Kos Island Intl.
Airlines serving
Aegean, Austrian Airlines, Eurowings, Lufthansa, Swiss International Air Lines
Return price
€173
Distance
2694 km

Perfect flights from London to Kos

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Kos. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Kos Island Intl. ticket options cater to your travel preferences, with incredible one-way fares from €103 and roundtrip prices from €174. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Kos Island Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Kos.

Frequently asked questions

How much is a flight from LHR to Kos Island Intl. Airport (KGS)?
Round-trip journeys between Heathrow Airport (LHR) and KGS start from €174. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book today so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from London Heathrow to KGS?
The majority of flights can be conveniently cancelled online, but whether or not you incur a fee depends on your airline. If you do have to cancel your holiday, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Heathrow Airport to KGS that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Heathrow Airport to Kos Island Intl. Airport (KGS) flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from Heathrow Airport to Kos Airport?
It takes approximately 4 hours and 36 minutes to journey from Heathrow Airport (LHR) to Kos Island Intl. Airport (KGS) (KGS). But with some music and a few interesting magazines, the hours will pass by quicker.
How far is the flight from Heathrow Airport to KGS?
The flight distance from LHR to KGS is 2,700 kilometres. Bring a drink, some snacks and a good book to read. Keep yourself busy in the air and time will zip by.
Which airlines fly direct from Heathrow Airport (LHR) to Kos Island Intl. Airport (KGS)?
You won't find any airlines flying directly between Heathrow Airport (LHR) and Kos Airport, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a welcome way to break up a trip!
Are LHR to KGS flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Heathrow Airport to KGS at the last minute could save you some serious cash. However, you might miss out on a flight altogether! If you'd rather err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.

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