LHR - KGS

£83 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 30/9. 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

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
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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

Sun, 5 Oct - Wed, 8 Oct
Aegean Airlines Logo
22:15 - 23:55LHR-KGS
23h 40m1 stop
Aegean Airlines Logo
18:10 - 17:55KGS-LHR
25h 45m1 stop
£148Aegean Airlines
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Wed, 15 Oct - Wed, 22 Oct
 Logo
10:25 - 20:50LHR-KGS
8h 25m1 stop
 Logo
20:40 - 07:55KGS-LHR
13h 15m1 stop
Tue, 14 Oct - Tue, 21 Oct
 Logo
19:30 - 20:50LHR-KGS
23h 20m1 stop
 Logo
20:30 - 07:55KGS-LHR
13h 25m1 stop
Mon, 6 Oct - Fri, 10 Oct
Austrian Airlines Logo
06:00 - 20:00LHR-KGS
12h 00m1 stop
Austrian Airlines Logo
21:35 - 08:20KGS-LHR
12h 45m1 stop
£151Austrian Airlines
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Sat, 1 Nov - Wed, 5 Nov
Lufthansa Logo
08:45 - 19:25LHR-KGS
8h 40m1 stop
Lufthansa Logo
18:55 - 22:55KGS-LHR
6h 00m1 stop
£152Lufthansa
Find Deal
Mon, 13 Oct - Thu, 16 Oct
Aegean Airlines Logo
22:15 - 23:55LHR-KGS
23h 40m1 stop
Aegean Airlines Logo
18:10 - 17:55KGS-LHR
25h 45m1 stop
£161Aegean Airlines
Find Deal
Mon, 6 Oct - Thu, 16 Oct
Aegean Airlines Logo
22:15 - 17:30LHR-KGS
17h 15m1 stop
Aegean Airlines Logo
18:10 - 17:55KGS-LHR
25h 45m1 stop
£162Aegean Airlines
Find Deal
Mon, 22 Sep - Fri, 26 Sep
Austrian Airlines Logo
06:00 - 20:00LHR-KGS
12h 00m1 stop
Austrian Airlines Logo
21:35 - 09:00KGS-LHR
13h 25m1 stop
£165Austrian Airlines
Find Deal
Fri, 31 Oct - Wed, 5 Nov
Lufthansa Logo
16:40 - 19:25LHR-KGS
24h 45m1 stop
Lufthansa Logo
18:55 - 22:55KGS-LHR
6h 00m1 stop
£174Lufthansa
Find Deal
Tue, 14 Oct - Tue, 21 Oct
SWISS Logo
07:00 - 19:40LHR-KGS
10h 40m2 stops
SWISS Logo
20:30 - 07:55KGS-LHR
13h 25m1 stop
£218SWISS
Find Deal

Everything you should know

Top airlines
Aegean Airlines
Cheapest • from £148 (return)
Aegean Airlines
Best reviews • 8.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest return fare
£148
Typical prices: £258-386
Aegean Airlines
Sun 5/10Wed 8/10
LHR - KGS • 1 stop
Cheapest one-way flight
£83
Aegean Airlines
Tue 30/9
LHR - KGS • 1 stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Kos!
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?

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

Cheapest flight£83
Most popular time to fly and prices are also 5% lower 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 £112 for a one-way ticket and £201 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?

    The Airbus A320neo is the aircraft model that flies most regularly on the London Heathrow Airport to Kos flight 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 £266 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 £204 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 3 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 787 reviews
7.8Boarding
7.0Entertainment
7.4Food
8.6Crew
7.9Comfort
Airline reviews

For a quick trip to athens they did a great job plane was spacious, and we boarded quickly.

10.0 ExcellentT, Aug 2025ATH - JTR
Read more Aegean Airlines reviews

For a quick trip to athens they did a great job plane was spacious, and we boarded quickly.

it was hard to find the check in at the airport no signs food was average

Short flight. Was not told if there was a kosher option for the snack.

Lost my bagage on the first leg of our trip. Not even on the transfer but on the first flight they didnt put our bagage

The crew aboard Aegean were excellent, they picked on our son’s anxiety and immediately came to the rescue to see what they could do to make it go away.

My experience with a GNA was extremely poor. My original flight was canceled. They put me on another flight. Four hours later. They changed my seat number to the last row where I had no room at all and it cost me $120 for luggage. Additionally, I missed my ferry in Paris Athens. I had to rebook my ferry and I could not get a refund so by them canceling the trip for four hours it caused me no ferry to go to Betsy. I had to find a room that night. The only one I could find was at the Hyatt grand in Athens And I lost a night. Stay at Betsy that I had already prepaid so no my experience was awful. Additionally, they never said on any intercom that Greece was one hour ahead of Paris so that was a problem. We had no idea and when it was never communicated to us

Ove Aegean Airlines! Used them for several flights over past 4.months. never flown w them before but will certainly use in the future!!!

A thoroughly enjoyable experience in business class, which we “won” in the airlines lottery In exchange for a relatively small deposit. The breakfast served at the beginning of this three hour flight was absolutely phenomenal. I would be tempted to fly Aegean airlines on a transatlantic flight in light of this experience.

Was grateful that this flight was held for us as we were late from our prior flight.

Our connecting flight from Barcelona to Athens was late and it appeared that we would not make the connectimg flight to Telaviv. The plane ended up waiting and we made the connection. The airline redeemed itself.

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.

We took two long flights with Lufthansa, both were delayed making us miss our connecting flights. Lufthansa took care of the first one. The second was a switch to United and figuring out how to rebook was not a pleasant experience.

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.

After living in Europe for five years and flying with Lufthansa and KLM airlines, I’ve realized that United Airlines is now a budget carrier. The flight attendant are not friendly. The seats are not comfortable. And everything comes at a cost. I will be flying with KLM and Skyteam like Delta to the US going forward no doubt. United Airlines is not what it once was:

Delayed over 2 hours. Bring your own snacks or prepare to pay. No entertainment and no plug plugs for charging.

what would have been better would have been that my booking not been canceled by the system and had I been informed that the booking had been cancelled by the system I could have immediately rebooked and not found out that there was an issue when I was told by the system that I needed to book in. It would have also been good if either the booking agent or BA or anyone been in anyway useful. In the end I had to rebook a flight at an additional cost of $350. So no I'm not impressed by BA any of the other parties involved.

Boarding was poor. Why are first class passengers not boarded first?! Bus to the plane and then held on a packed bus because we were waiting for people on the bus before to finish boarding. Seat belt on the fist clas seat is very uncomfortable, cutting into your neck. Other than that crew, seating and food were all excellent. Entertainment, as usual - rubbish.

The flight was fine but no food available apart from snacks like Pringles and olives which was a problem for me as I hadn’t eaten anything that day. But the worst problem was BA left 24 suitcases in Heathrow as the flight was too full but didn’t tell anyone. So we waited for ages at Toulouse airport with no information and finally found out from the one member of staff in the baggage collection area who explained what had happened and apologised for no announcement being made but said that was their policy. Then BA contacted me today to say they have found my luggage and can deliver it to me on Tuesday - half way through my holiday!!!! So a friend has had to make a four hour round trip in his car to go and collect the luggage from the airport so we can get it today. A TOTAL SHAMBLES AND DISREGARD BY BA FOR THEIR PASSENGERS’ BEST INTERESTS.

Much much better than my previous times on British Airways the food was spot-on and the service was really genuine and attentive

Flight was delayed but my previous flight was as well so It worked to my advantage. This was my first time in first class. I don't think they ever stopped feeding us. The seating area was very spacious and comfortable. The attendants were wonderful, warm, friendly and very personable.

First time on BA but will fly with them from now on! Everything about the flight was superb!!!

Horrible experience. They broke the handle of my checked in suitcase and then refused pay for damages

We had a pretty good experience. Enjoyed both the flights. Crew was very good and helpful.

The flight was very delayed in taking off - which was out of control of the crew, but then the pilot worked hard so we only arrived about 30 minutes late. Everyone was very friendly and accommodating!

They issued seat assignments and sat my 2 year-old in the row behind me, separate from me and my daughter. Communication/ customer service was terrible. They told me to change it in London, then in London, they told me to talk to the cabin crew, then a supervisor came and stuck us in the back of the plane when we were supposed to be in row 25. Overall, they need to really work on their customer service. Additionally the food was terrible and they ran out of meals and didn’t have any kid options. To top it off there was no in-flight entertainment for the first hour of the trip.

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

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