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Cheap flights from London Heathrow Airport to Kos from £98

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KGS
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Kos

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Kos
Explore the most affordable flight options available from Heathrow to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2026.

Fri 8/506:50
LHR
-
KGS
1 stop7h 35m
Brussels Airlines
Sun 17/511:25
KGS
-
LHR
1 stop7h 40m
Brussels Airlines
Deal found 11/2£166
Sat 6/611:05
LHR
-
KGS
1 stop6h 30m
Multiple Airlines
Tue 9/620:30
KGS
-
LHR
1 stop13h 25m
Multiple Airlines
Deal found 13/2£173
Wed 8/418:40
LHR
-
KGS
1 stop13h 40m
SWISS
Thu 16/411:10
KGS
-
LHR
1 stop7h 15m
SWISS
Deal found 10/2£182
Sat 11/406:00
LHR
-
KGS
1 stop12h 00m
SWISS
Sat 18/420:45
KGS
-
LHR
1 stop13h 10m
SWISS
Deal found 11/2£186
Wed 18/322:15
LHR
-
KGS
1 stop7h 50m
Aegean Airlines
Sat 28/308:35
KGS
-
LHR
1 stop14h 40m
Aegean Airlines
Deal found 12/2£188
Wed 22/420:05
LHR
-
KGS
1 stop12h 15m
Multiple Airlines
Wed 29/411:25
KGS
-
LHR
1 stop12h 10m
Multiple Airlines
Deal found 12/2£191
Tue 30/620:25
LHR
-
KGS
1 stop20h 40m
Multiple Airlines
Mon 6/711:25
KGS
-
LHR
1 stop12h 10m
Multiple Airlines
Deal found 10/2£199
Thu 11/606:00
LHR
-
KGS
1 stop12h 20m
Multiple Airlines
Sun 21/611:25
KGS
-
LHR
1 stop12h 10m
Multiple Airlines
Deal found 10/2£201
Wed 11/322:15
LHR
-
KGS
1 stop7h 50m
Aegean Airlines
Wed 18/312:35
KGS
-
LHR
1 stop7h 20m
Aegean Airlines
Deal found 11/2£210
Wed 2/918:40
LHR
-
KGS
1 stop13h 30m
SWISS
Wed 9/920:40
KGS
-
LHR
1 stop13h 15m
SWISS
Deal found 10/2£211
Sun 7/606:00
LHR
-
KGS
1 stop26h 10m
Multiple Airlines
Wed 17/611:25
KGS
-
LHR
1 stop7h 40m
Multiple Airlines
Deal found 10/2£214
Sun 15/322:15
LHR
-
KGS
1 stop11h 50m
Aegean Airlines
Sun 29/309:20
KGS
-
LHR
1 stop8h 10m
Aegean Airlines
Deal found 12/2£216

Find flight deals from Heathrow to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Kos (KGS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 February 2026.

Round-trip from

£166

One-way from

£98

Popular in

December

Cheapest in

April

Average price

£216
Brussels Airlines
  • Brussels Airlines
  • 8/5-17/5
  • 2 total stops
  • 15h 15m total
  • London to Kos
Search Deals
Aegean Airlines
  • Aegean Airlines
  • 19/3
  • 1 total stop
  • 11h 50m total
  • London to Kos
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Kos that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Kos that are best for you.

Fly from

Heathrow

Fly to

Kos

Route

Depart

Return

Price

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Fri 8/5

06:50-16:25

1 stop7h 35m

Kos

Sun 17/5

11:25-17:05

1 stop7h 40m

£166

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 8/4

18:40-10:20

1 stop13h 40m

Kos

Thu 16/4

11:10-16:25

1 stop7h 15m

£182

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sat 6/6

11:05-19:35

1 stop6h 30m

Kos

Sun 14/6

11:25-21:35

1 stop12h 10m

£216

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Fri 10/4

22:15-08:50

1 stop8h 35m

Kos

Wed 15/4

12:05-16:25

1 stop6h 20m

£234

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 13/5

22:15-00:35

1 stop24h 20m

Kos

Tue 19/5

06:00-11:15

1 stop7h 15m

£238

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Thu 23/4

16:35-00:35

1 stop6h 00m

Kos

Mon 27/4

13:05-17:55

1 stop6h 50m

£241

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sat 25/4

06:00-19:55

1 stop11h 55m

Kos

Fri 1/5

17:20-21:35

1 stop6h 15m

£252

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Thu 23/4

09:00-00:35

2 stops13h 35m

Kos

Thu 30/4

11:10-16:25

1 stop7h 15m

£252

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 20/5

06:00-19:55

1 stop11h 55m

Kos

Sun 24/5

17:50-21:45

1 stop5h 55m

£254

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Thu 18/6

06:00-20:20

1 stop12h 20m

Kos

Wed 24/6

11:25-17:05

1 stop7h 40m

£263

Flights are sorted by cheapest return flights first.

Deals found on 10/2

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Heathrow to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Kos

What’s the top stopover airport for flights from London Heathrow Airport to Kos?

Share of one-stop return flights from London Heathrow Airport to Kos chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Athens (ATH) – chosen by Cheapflights users on 55% of one-stop itineraries from London Heathrow Airport to Kos on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Kos?

Average return fare for one-stop flights from London Heathrow Airport to Kos, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Vienna (VIE) is the most affordable one-stop option, with an average return flight price of £148.

What’s the fastest stopover option from London Heathrow Airport to Kos?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Kos, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Zurich (ZRH) have the shortest average one-way travel time for one-stop routes: 5h 35m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Kos?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Kos, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Düsseldorf (DUS) offer the fastest connection on this route, with an average stopover time of 1h 40m.

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated 13 February 2026.
Check out reviews from past customers who have flown with Aegean Airlines and Lufthansa from London Heathrow Airport to Kos to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.1
Very Good
852 reviews
Check prices

Overall

8.1

Boarding

7.8

Comfort

7.9

Entertainment

6.9

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

mandy,Dec 2025

ATH - RIX

You get what you pay for! No food or entertainment but seats were comfortable
Aegean Airlines
8.1
Very Good
852 reviews
Aegean Airlines
8.1
Very Good
852 reviews
Check prices

Overall

8.1

Boarding

7.8

Comfort

7.9

Entertainment

6.9

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

mandy,Dec 2025

ATH - RIX

You get what you pay for! No food or entertainment but seats were comfortable
Lufthansa
6.8
Okay
7,782 reviews
Aegean Airlines
8.1
Very Good
852 reviews
Check prices

Overall

8.1

Boarding

7.8

Comfort

7.9

Entertainment

6.9

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

mandy,Dec 2025

ATH - RIX

You get what you pay for! No food or entertainment but seats were comfortable

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from London Heathrow?

    Most people fly into Kos (KGS) if they book a flight to Kos from London Heathrow. On average, Kos has 0 inbound flights from London Heathrow per day from 2 airlines. Kos is conveniently located just 12.8 mi from Kos’s city center.

  • How long is the flight from London Heathrow Airport to Kos?

    There are many flights that can get you from London Heathrow Airport to Kos in 7h 35m. Fly via Brussels Airlines, SWISS, or Aegean Airlines to get the fastest option. The distance from London Heathrow Airport to Kos is about 1683 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Kos round-trip?

    Our cheapest airline available from London Heathrow Airport to Kos is Lufthansa. Our recent data shows that you can find tickets from as low as £128 on this airline. An additional option worth looking into is Aegean Airlines, starting at £212. Lufthansa is 50% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Heathrow to Kos that include hotel bookings?

    Yes. In addition to deals on Heathrow to Kos flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Kos.

  • Can I find deals for business class flights from Heathrow to Kos?

    Yes. Cheapflights offers flight deals from Heathrow to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Kos?

Book flights to Kos if you plan to visit one of these locations
Marmari
Kardamena

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Heathrow to Kos

Discover the top 2 airlines that operate flights from Heathrow to Kos. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 February 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£128Average£181FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aegean AirlinesCheapest£212Average£288FlexibilityNo cancel feeOn-time87%
Search Aegean Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Kos?

Cheapflights helps you search for flights from Heathrow to Kos via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Kos?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Kos.

Can Cheapflights find flights from Heathrow to Kos with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Kos flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to Kos become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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