£143 Cheap Flights from London (LHR) to Kos (KGS)

View £143 flight on Mon, 22 Jun 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 (LHR) to Kos (KGS)

Prices were available within the past 7 days and start at £143 for one-way flights and £185 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Wed, 17 Jun - Sun, 21 Jun
LHR
London
KGS
Kos
£185 Return, just found
£185
Return
just found
Select Lufthansa flight, departing Wed, 17 Jun from London to Kos, returning Sun, 21 Jun, priced at £185 just found
Brussels Airlines
Fri, 12 Jun - Fri, 19 Jun
LHR
London
KGS
Kos
£186 Return, found 10 hours ago
£186
Return
found 10 hours ago
Select Brussels Airlines flight, departing Fri, 12 Jun from London to Kos, returning Fri, 19 Jun, priced at £186 found 10 hours ago
Austrian Airlines
Thu, 4 Jun - Fri, 19 Jun
LHR
London
KGS
Kos
£186 Return, found 10 hours ago
£186
Return
found 10 hours ago
Select Austrian Airlines flight, departing Thu, 4 Jun from London to Kos, returning Fri, 19 Jun, priced at £186 found 10 hours ago
Swiss International Air Lines
Fri, 5 Jun - Mon, 8 Jun
LHR
London
KGS
Kos
£186 Return, just found
£186
Return
just found
Select Swiss International Air Lines flight, departing Fri, 5 Jun from London to Kos, returning Mon, 8 Jun, priced at £186 just found
Lufthansa
Wed, 17 Jun - Mon, 22 Jun
LHR
London
KGS
Kos
£186 Return, just found
£186
Return
just found
Select Lufthansa flight, departing Wed, 17 Jun from London to Kos, returning Mon, 22 Jun, priced at £186 just found
Lufthansa
Wed, 17 Jun - Mon, 22 Jun
LHR
London
KGS
Kos
£188 Return, just found
£188
Return
just found
Select Lufthansa flight, departing Wed, 17 Jun from London to Kos, returning Mon, 22 Jun, priced at £188 just found
Lufthansa
Wed, 3 Jun - Sun, 7 Jun
LHR
London
KGS
Kos
£188 Return, found 3 hours ago
£188
Return
found 3 hours ago
Select Lufthansa flight, departing Wed, 3 Jun from London to Kos, returning Sun, 7 Jun, priced at £188 found 3 hours ago
Lufthansa
Wed, 3 Jun - Mon, 8 Jun
LHR
London
KGS
Kos
£189 Return, found 2 days ago
£189
Return
found 2 days ago
Select Lufthansa flight, departing Wed, 3 Jun from London to Kos, returning Mon, 8 Jun, priced at £189 found 2 days ago
Swiss International Air Lines
Wed, 17 Jun - Mon, 22 Jun
LHR
London
KGS
Kos
£191 Return, just found
£191
Return
just found
Select Swiss International Air Lines flight, departing Wed, 17 Jun from London to Kos, returning Mon, 22 Jun, priced at £191 just found
Eurowings
Thu, 11 Jun - Tue, 16 Jun
LHR
London
KGS
Kos
£260 Return, found 1 day ago
£260
Return
found 1 day ago
Select Eurowings flight, departing Thu, 11 Jun from London to Kos, returning Tue, 16 Jun, priced at £260 found 1 day ago

Alternative airports near Kos

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kalymnos Island National JKL. Average driving time to city centre is 2 hours 50 minutes. Flights from £398
JKL
Kalymnos Island National
Average driving time to city centre2 h 50 min
Flights from £398

Frequently asked questions

How much does a flight from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) cost?
One-way flights typically cost between £193 and £702 and return flights often range between £284 and £650. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
How do I find cheap flights from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
To find a cheap flight from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
There are approximately 42 connecting flights per day from London Heathrow (LHR) to Kos Island Intl. (KGS). Some common connection points include Franz Josef Strauss Intl. (MUC), Eleftherios Venizelos (ATH), and Frankfurt Intl. (FRA).
What is the earliest flight from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
The earliest flight from London Heathrow (LHR) to Kos (KGS) typically departs at approximately 6:00 AM local time. This service is seasonal, active only in September. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
You'll typically find the most flights from London Heathrow (LHR) to Kos Island Intl. (KGS) on a Friday, with around 27 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Lufthansa, British Airways, and Aegean Airlines. Friday offers notably more flight options compared to other days.
What are the most popular departure times for flights from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
The most popular departure times for flights from London Heathrow (LHR) to Kos Island Intl. (KGS) are in the evening, from 6pm to 9pm. About 39% of passengers prefer this time. Many major carriers, including Lufthansa, Aegean Airlines and British Airways, offer flights during this window. This timing works well because you can finish your day before heading to the airport, and you'll arrive in Kos ready to start your holiday.
How long does it take to fly from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
Flying from LHR to KGS with a connection usually takes about 17 hours 20 minutes, traveling roughly 1,684 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
Select the "Business class" and "First class" filters when looking for LHR to KGS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Kos from Heathrow (LHR)?
From Heathrow (LHR), you can fly directly into Kos Island Intl. (KGS) to reach Kos. Some flights may connect through major hubs like Frankfurt Intl. (FRA), Roissy-Charles de Gaulle (CDG), Schiphol (AMS) before reaching Kos. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) flight and hotel package?
Securing a London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.)?
If you booked your London (LHR-Heathrow) to Kos (KGS-Kos Island Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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
£185
Distance
2694 km

Book with confidence

Compare flights from London to Kos easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Kos. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Kos Island Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Kos Island Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Kos Island Intl. (KGS)

The easiest way to view the best deals on flights from London to Kos today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Kos Island Intl. start at just £185 and range up to £260.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Kos
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Kos flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Kos Island Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from London to Kos easily and book with confidence

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