Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Kos from £107

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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KGS
2 May — 9 May1
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 2 April 2026.

Fri 15/506:50
LHR
-
KGS
1 stop7h 35m
Brussels Airlines
Fri 22/517:20
KGS
-
LHR
1 stop6h 15m
Brussels Airlines
Deal found 2/4£218
Tue 23/620:05
LHR
-
KGS
1 stop21h 50m
Multiple Airlines
Tue 30/611:25
KGS
-
LHR
1 stop12h 10m
Multiple Airlines
Deal found 29/3£219
Sat 16/507:25
LHR
-
KGS
1 stop10h 20m
Multiple Airlines
Sat 23/520:45
KGS
-
LHR
1 stop13h 10m
Multiple Airlines
Deal found 1/4£225
Fri 9/1019:00
LHR
-
KGS
1 stop15h 35m
Aegean Airlines
Sun 18/1008:10
KGS
-
LHR
1 stop9h 20m
Aegean Airlines
Deal found 31/3£235
Sun 17/522:15
LHR
-
KGS
1 stop8h 35m
Aegean Airlines
Sun 24/506:00
KGS
-
LHR
1 stop7h 15m
Aegean Airlines
Deal found 1/4£240
Wed 3/617:00
LHR
-
KGS
1 stop14h 15m
Multiple Airlines
Tue 9/614:50
KGS
-
LHR
2 stops20h 20m
Multiple Airlines
Deal found 31/3£243
Sun 17/519:55
LHR
-
KGS
1 stop22h 05m
Austrian Airlines
Mon 25/520:50
KGS
-
LHR
1 stop13h 30m
Austrian Airlines
Deal found 29/3£244
Wed 6/520:05
LHR
-
KGS
1 stop12h 15m
Multiple Airlines
Sun 10/511:25
KGS
-
LHR
1 stop7h 40m
Multiple Airlines
Deal found 1/4£245
Mon 1/620:05
LHR
-
KGS
1 stop21h 35m
SWISS
Mon 8/611:00
KGS
-
LHR
1 stop7h 25m
SWISS
Deal found 31/3£246
Sat 2/506:00
LHR
-
KGS
1 stop12h 00m
SWISS
Sat 9/520:45
KGS
-
LHR
1 stop13h 10m
SWISS
Deal found 2/4£246
Sun 31/507:30
LHR
-
KGS
1 stop23h 25m
Multiple Airlines
Tue 9/620:30
KGS
-
LHR
1 stop13h 25m
Multiple Airlines
Deal found 31/3£253
Sat 29/806:50
LHR
-
KGS
1 stop10h 45m
Brussels Airlines
Sat 5/920:35
KGS
-
LHR
1 stop22h 30m
Brussels Airlines
Deal found 30/3£254

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 2 April 2026.

Round-trip from

£218

One-way from

£107

Popular in

March

Cheapest in

April

Average price

£142
Brussels Airlines
  • Brussels Airlines
  • 15/5-22/5
  • 2 total stops
  • 13h 50m total
  • London to Kos
Search Deals
30/8
  • 30/8
  • 1 total stop
  • 24h 20m total
  • London to Kos
Search Deals
High demand for flights, 3% potential price rise
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 April 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 2 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 17/5

16:35-00:35

1 stop6h 00m

Kos

Sun 24/5

06:00-11:15

1 stop7h 15m

£302

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 8/6

22:15-17:30

1 stop17h 15m

Kos

Wed 10/6

09:20-21:10

1 stop13h 50m

£330

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 1/6

16:35-00:35

1 stop6h 00m

Kos

Sun 7/6

06:00-11:15

1 stop7h 15m

£347

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sat 2/5

16:35-00:35

1 stop6h 00m

Kos

Thu 7/5

09:20-15:30

1 stop8h 10m

£363

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 20/5

22:15-08:50

1 stop8h 35m

Kos

Fri 29/5

13:05-17:55

1 stop6h 50m

£364
Cheapest one-way

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Fri 21/8

12:00-22:00

1 stop8h 00m

£141

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 19/8

19:00-11:55

1 stop14h 55m

£206

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 20/5

16:35-11:20

2 stops40h 45m

£217

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 4/5

06:30-00:35

3 stops16h 05m

£222

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 14/7

19:00-08:50

1 stop11h 50m

£237

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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

How much does it cost for a return flight from London Heathrow Airport to Kos?

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 2 April 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
861 reviews
Check prices

Entertainment

6.9

Food

7.3

Comfort

7.8

Crew

8.6

Boarding

7.8

Overall

8.1

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
861 reviews
Aegean Airlines
8.1
Very Good
861 reviews
Check prices

Entertainment

6.9

Food

7.3

Comfort

7.8

Crew

8.6

Boarding

7.8

Overall

8.1

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
7,885 reviews
Aegean Airlines
8.1
Very Good
861 reviews
Check prices

Entertainment

6.9

Food

7.3

Comfort

7.8

Crew

8.6

Boarding

7.8

Overall

8.1

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 6h. Fly via Aegean Airlines to get the fastest option. The distance from London Heathrow Airport to Kos is about 1683 mi.

  • 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 £132 on this airline. An additional option worth looking into is Aegean Airlines, starting at £223. 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
Kardamena

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£132Average£177FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aegean AirlinesCheapest£223Average£273FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.