LHR - KGS

£90 Find Cheap Flights from London Heathrow Airport to Kos

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Kos departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kos

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Kos, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Kos, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£180
Typical prices: £275-£225
SWISS
Wed 3/6Mon 8/6
LHR - KGS • 1 stop
Cheapest one-way flight
£113
Eurowings
Thu 11/6
LHR - KGS • 1 stop
Top airlines
Cheapest • from £180 (return)
Best reviews • 8.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Heathrow and Kos. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £161 (return)
Shortest trip • 5h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Kos!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Kos (LHR-KGS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Kos that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Kos

Wed, 3 Jun - Mon, 8 Jun
SWISS Logo
08:40 - 19:55
LHR
-
KGS
9h 15m
1 stop
SWISS Logo
11:00 - 17:50
KGS
-
LHR
8h 50m
1 stop
£180SWISS
Tue, 23 Jun - Tue, 30 Jun
SWISS Logo
06:00 - 19:40
LHR
-
KGS
11h 40m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£184SWISS
Wed, 10 Jun - Wed, 17 Jun
Multiple Airlines Logo
07:25 - 19:05
LHR
-
KGS
9h 40m
1 stop
Multiple Airlines Logo
11:25 - 17:05
KGS
-
LHR
7h 40m
1 stop
£184Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Austrian Airlines Logo
06:00 - 20:20
LHR
-
KGS
12h 20m
1 stop
Austrian Airlines Logo
21:10 - 21:40
KGS
-
LHR
26h 30m
1 stop
£186Austrian Airlines
Sun, 7 Jun - Sun, 14 Jun
SWISS Logo
06:00 - 17:05
LHR
-
KGS
9h 05m
1 stop
SWISS Logo
17:50 - 07:55
KGS
-
LHR
16h 05m
1 stop
£187SWISS
Tue, 9 Jun - Tue, 16 Jun
SWISS Logo
08:45 - 19:40
LHR
-
KGS
8h 55m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£192SWISS
Sat, 16 May - Mon, 8 Jun
SWISS Logo
06:00 - 20:00
LHR
-
KGS
12h 00m
1 stop
SWISS Logo
11:00 - 21:45
KGS
-
LHR
12h 45m
1 stop
£194SWISS
Tue, 9 Jun - Tue, 23 Jun
Multiple Airlines Logo
17:50 - 10:25
LHR
-
KGS
14h 35m
1 stop
Multiple Airlines Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£195Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
SWISS Logo
06:00 - 19:40
LHR
-
KGS
11h 40m
1 stop
SWISS Logo
20:30 - 11:20
KGS
-
LHR
16h 50m
1 stop
£199SWISS
Sun, 14 Jun - Tue, 23 Jun
SWISS Logo
06:00 - 17:05
LHR
-
KGS
9h 05m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£200SWISS
Booking Insights

KAYAK’s insights & trends for Heathrow to Kos flights

Get data-powered insights and trends into flights from Heathrow to Kos to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London Heathrow Airport to Kos?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Kos departing in June.

What is the cheapest month to fly from London Heathrow Airport to Kos?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Kos, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Kos is February, where tickets cost £0 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is £372 and £352 respectively.

Good to know - Cheap tickets from London Heathrow Airport to Kos

Low seasonApril
Cheapest flight£113
Best time to beat the crowds (47% less expensive on average)
Most popular time to fly (35% more expensive on average)
Flight from London Heathrow Airport to Kos

When to book flights from Heathrow to Kos

Are your dates flexible? Find out the best times to travel from Heathrow to Kos based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Kos flights

  • What is the cheapest flight from London Heathrow Airport to Kos?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Kos was £113 for a one-way ticket and £180 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Kos?

    London Heathrow Airport and Kos are both served by 1 main airport. You will leave London Heathrow Airport from London Heathrow and will be arriving at Kos.

  • Which aircraft models fly most regularly from London Heathrow Airport to Kos?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Kos?

    Star Alliance is the only airline alliance operating flights between London Heathrow Airport and Kos.

  • Which is the best airline for flights from London to Kos, Aegean Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from London to Kos are Aegean Airlines and Lufthansa. With an average price for the route of £290 and an overall rating of 8.1, Aegean Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of £173 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Kos?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Kos.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Kos?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kos from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Kos?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Kos with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Kos?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kos from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Heathrow to Kos

 
See real verified KAYAK customer reviews for airlines flying from London to Kos. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Kos? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Aegean AirlinesOverall score based on 870 reviews
7.8Boarding
7.9Comfort
8.6Crew
6.9Entertainment
7.4Food
Airline reviews

On every Aegean flight it seems, they ask people to check in carry on luggage. That seems to happen less often with other airlines for some reason. The food is very basic for a full service airline. We do not need a meal with trays, but something of higher quality (even just higher quality pies) would be better. The cabin crew was very nice and professional, though.

8.0 ExcellentGeorge, Apr 2026
SKG - FRA
Read more Aegean Airlines reviews

On every Aegean flight it seems, they ask people to check in carry on luggage. That seems to happen less often with other airlines for some reason. The food is very basic for a full service airline. We do not need a meal with trays, but something of higher quality (even just higher quality pies) would be better. The cabin crew was very nice and professional, though.

Seats that recline. Ice for soft drinks. No charge for did drinks. Wifi.

Aegean Airlines was great! Great spirit, very helpful and efficient. Overall Aegean Airlines was a great experience.

The flight was excellent but the onboard WiFi wasn’t working.

The flight was full. The young man in the seat in front of me had reclined and I asked him to put the seat up just a bit because it was encroaching my space quite a lot. Turned out he couldn't because the mechanism was broken. The choice was all the way up or all the way down, no in-between.

The seat was hard as a rock. Business class seats were coach seats with no one in the middle. Service and food were excellent.

The crew was awesome. There was a school group of about 60 14 year-olds. The food is standard greek fare, Baklava was pre-packaged like it would normally be sold in a vending machine, and it was the highlight of the meal. Plane was in great shape, and seating was like a any A319 you would experience at a national-level carrier (i.e. not like Ryan Air). Like many European airports, they bused us to the plane, so the process of boarding groups is useless, and not well understood by infrequent travelers.

Departing from the Parikia apport on Paros was chaos. It is a 3rd world airport, and my home has more square footage. Olympic Air has several instances where there are less than two hours between flights leaving Paros. Further, there are two airlines at the airport, so airport resources are limited. With only one check in desk for each airline, the folks who are getting on the earlier flight are the only people who are able to check in. So, don't get there too early to check in. Also, the airport waiting area, after you go through security only holds about 1/2 of a plane's worth of people. So, the security line also has the same restrictions as the check in desks. Depending upon what time you get there, two queues will extend into the entry road. If your plan departs within the hour, go up to the front of the building and check to see which flight they are checking in or running through security.

Every one was attentive, the food was really very good . All and all was an excellent experience .

There was no enterteinment onboard. Food was good, and service too.

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

All was good, except my USB charging did not work, so my phone got drained and I could not charge it. Same happened to my neighbour.

Efficiency of staff, and comfort and cleanliness of aircraft was all great. Maybe a hot drink without payment at that time in the morning would be good!

The plane was late (as was my flight out from Birmingham the day before)

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

The flight was delayed by an hour. Made the connection uncomfortably tight.

Excellent once on board. Security staff at Johannesburg rude and aggressive.

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Everything you need to know for your flight from Heathrow to Kos

Information on your arrival and departure airports