Ancient ruins with stone columns and scattered trees.

€143 Cheap Flights London to Kos (LHR-KGS)

View €143 flight on Sat, 8 Aug 2026Opens 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 €143 for one-way flights and €212 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Sat, 29 Aug - Mon, 7 Sept
LHR
London
KGS
Kos
€212 Return, found 6 days ago
€212
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Sat, 29 Aug from London to Kos, returning Mon, 7 Sept, priced at €212 found 6 days ago
Brussels Airlines
Fri, 2 Oct - Fri, 9 Oct
LHR
London
KGS
Kos
€212 Return, found 12 hours ago
€212
Return
found 12 hours ago
Select Brussels Airlines flight, departing Fri, 2 Oct from London to Kos, returning Fri, 9 Oct, priced at €212 found 12 hours ago
Swiss International Air Lines
Sun, 16 Aug - Wed, 19 Aug
LHR
London
KGS
Kos
€228 Return, found 2 days ago
€228
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, 16 Aug from London to Kos, returning Wed, 19 Aug, priced at €228 found 2 days ago
Brussels Airlines
Fri, 25 Sept - Mon, 28 Sept
LHR
London
KGS
Kos
€229 Return, found 6 days ago
€229
Return
found 6 days ago
Select Brussels Airlines flight, departing Fri, 25 Sept from London to Kos, returning Mon, 28 Sept, priced at €229 found 6 days ago
Austrian Airlines
Fri, 2 Oct - Fri, 9 Oct
LHR
London
KGS
Kos
€229 Return, found 12 hours ago
€229
Return
found 12 hours ago
Select Austrian Airlines flight, departing Fri, 2 Oct from London to Kos, returning Fri, 9 Oct, priced at €229 found 12 hours ago
Brussels Airlines
Fri, 25 Sept - Mon, 28 Sept
LHR
London
KGS
Kos
€237 Return, found 6 days ago
€237
Return
found 6 days ago
Select Brussels Airlines flight, departing Fri, 25 Sept from London to Kos, returning Mon, 28 Sept, priced at €237 found 6 days ago
Swiss International Air Lines
Wed, 5 Aug - Thu, 13 Aug
LHR
London
KGS
Kos
€246 Return, found 4 days ago
€246
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Wed, 5 Aug from London to Kos, returning Thu, 13 Aug, priced at €246 found 4 days ago
Brussels Airlines
Fri, 25 Sept - Mon, 28 Sept
LHR
London
KGS
Kos
€247 Return, found 6 days ago
€247
Return
found 6 days ago
Select Brussels Airlines flight, departing Fri, 25 Sept from London to Kos, returning Mon, 28 Sept, priced at €247 found 6 days ago
Aegean
Fri, 25 Sept - Fri, 2 Oct
LHR
London
KGS
Kos
€255 Return, found 5 days ago
€255
Return
found 5 days ago
Select Aegean flight, departing Fri, 25 Sept from London to Kos, returning Fri, 2 Oct, priced at €255 found 5 days ago
Lufthansa
Sun, 16 Aug - Wed, 19 Aug
LHR
London
KGS
Kos
€256 Return, found 2 days ago
€256
Return
found 2 days ago
Select Lufthansa flight, departing Sun, 16 Aug from London to Kos, returning Wed, 19 Aug, priced at €256 found 2 days ago

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

January is typically the cheapest month to fly

From €130 - €292 per traveller.

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 €212. 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.

Travel information

Origin airport
Heathrow
Destination airport
Kos Island Intl.
Airlines serving
Aegean, Austrian Airlines, Brussels Airlines, Eurowings, Lufthansa, Swiss International Air Lines
Return price
€211
Distance
2694 km

Book with confidence

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 €143 and roundtrip prices from €212. 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.
Perfect flights from London to Kos

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