What is the cheapest airline that flies from London Heathrow to Kos?

Aegean Airlines is the most popular carrier operating from London Heathrow to Kos

When did momondo last update prices for flights from London Heathrow Airport to Kos Airport?

Prices for flights from London Heathrow Airport to Kos Airport refresh daily.

How many operators does momondo search for flights from London Heathrow Airport to Kos Airport?

The number of operators available for flights from London Heathrow Airport to Kos Airport is 2 as of December 2025.

How old do you have to be to fly from London Heathrow Airport to Kos Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Kos Airport.

What documentation or ID do you need to fly to Kos Airport?

The required travel and health documents for your Kos Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kos Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£81 Cheap Flights from London Heathrow Airport to Kos in 2025/26

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Find the cheapest flights from London Heathrow Airport to Kos

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

22:15 - 08:05

LHR

KGS

7h 50m1 stop

12:35 - 17:55

KGS

LHR

7h 20m1 stop

£150Aegean Airlines

Wed, 28 Jan - Wed, 4 Feb

22:15 - 08:05

LHR

KGS

7h 50m1 stop

20:35 - 17:55

KGS

LHR

23h 20m1 stop

£167Aegean Airlines

Tue, 27 Jan - Tue, 3 Feb

16:35 - 08:05

LHR

KGS

13h 30m1 stop

21:05 - 17:55

KGS

LHR

22h 50m1 stop

£168Aegean Airlines

Wed, 14 Jan - Sun, 18 Jan

19:00 - 08:05

LHR

KGS

11h 05m1 stop

21:05 - 21:15

KGS

LHR

26h 10m1 stop

£176Aegean Airlines

Mon, 12 Jan - Fri, 16 Jan

09:30 - 10:25

LHR

KGS

22h 55m1 stop

20:15 - 08:15

KGS

LHR

14h 00m1 stop

£197Lufthansa

Sun, 10 May - Sat, 16 May

22:15 - 08:50

LHR

KGS

8h 35m1 stop

09:20 - 21:10

KGS

LHR

13h 50m1 stop

£202Aegean Airlines

Sun, 10 May - Wed, 13 May

22:15 - 19:30

LHR

KGS

19h 15m2 stops

08:35 - 17:55

KGS

LHR

11h 20m1 stop

£215Aegean Airlines

Wed, 28 Jan - Wed, 4 Feb

19:00 - 08:05

LHR

KGS

11h 05m1 stop

19:55 - 15:30

KGS

LHR

21h 35m2 stops

£221Aegean Airlines

Wed, 14 Jan - Sun, 18 Jan

22:15 - 08:05

LHR

KGS

7h 50m1 stop

08:35 - 17:55

KGS

LHR

11h 20m1 stop

£221Aegean Airlines

Tue, 6 Jan - Tue, 13 Jan

06:00 - 20:00

LHR

KGS

12h 00m1 stop

12:40 - 18:25

KGS

LHR

7h 45m1 stop

£224Multiple Airlines

Mon, 8 Jun - Mon, 15 Jun

Aegean Airlines flights from London Heathrow Airport to Kos

Our best Aegean Airlines deals on London Heathrow Airport to Kos flight tickets

Aegean Airlines

28 Jan

LHR22:15London Heathrow

7h 50m

1 stop

KGS08:05Kos

4 Feb

KGS12:35Kos

7h 20m

1 stop

LHR17:55London Heathrow

£150

Find similar

Aegean Airlines

27 Jan

LHR22:15London Heathrow

7h 50m

1 stop

KGS08:05Kos

3 Feb

KGS20:35Kos

23h 20m

1 stop

LHR17:55London Heathrow

£167

Find similar

Aegean Airlines

14 Jan

LHR16:35London Heathrow

13h 30m

1 stop

KGS08:05Kos

18 Jan

KGS21:05Kos

22h 50m

1 stop

LHR17:55London Heathrow

£168

Find similar

momondo Fare Finder

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

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 28/1

22:15-08:05

1 stop7h 50m

Kos

Wed 4/2

12:35-17:55

1 stop7h 20m

£150

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 27/1

22:15-08:05

1 stop7h 50m

Kos

Tue 3/2

20:35-17:55

1 stop23h 20m

£167

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 14/1

16:35-08:05

1 stop13h 30m

Kos

Sun 18/1

21:05-17:55

1 stop22h 50m

£168

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 12/1

19:00-08:05

1 stop11h 05m

Kos

Fri 16/1

21:05-21:15

1 stop26h 10m

£176

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 10/5

09:30-10:25

1 stop22h 55m

Kos

Sat 16/5

20:15-08:15

1 stop14h 00m

£197

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 10/5

22:15-08:50

1 stop8h 35m

Kos

Wed 13/5

09:20-21:10

1 stop13h 50m

£202

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 28/1

22:15-19:30

2 stops19h 15m

Kos

Wed 4/2

08:35-17:55

1 stop11h 20m

£215

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 14/1

19:00-08:05

1 stop11h 05m

Kos

Sun 18/1

19:55-15:30

2 stops21h 35m

£221

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 6/1

22:15-08:05

1 stop7h 50m

Kos

Tue 13/1

08:35-17:55

1 stop11h 20m

£221

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 8/6

06:00-20:00

1 stop12h 00m

Kos

Mon 15/6

12:40-18:25

1 stop7h 45m

£224

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Kos

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Kos?

According to our data, Thursday is the cheapest day to fly to Kos from London Heathrow Airport. The lowest ticket price found for a Thursday departure recently was £214. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Kos is Saturday, with ticket prices averaging around £395.

What is the cheapest time of day to depart on your flight to Kos?

Our most recent data shows that the best time of day to fly to Kos is in the afternoon. Flights from London Heathrow Airport to Kos during this time can be as low as £206. In the morning is when there is more demand to fly to Kos, so prices are often more expensive at around £294 per ticket.

When to book flights from London Heathrow Airport to Kos

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Kos according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Heathrow Airport to Kos (LHR to KGS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Kos

Fastest flight time	9h 05m
Direct flights	None

The fastest flight from London Heathrow Airport to Kos takes 9h 05m

There are no direct flights from London Heathrow Airport to Kos. There are no popular flight routes from London Heathrow Airport to Kos.

Search flight deals

How far is London Heathrow to Kos by plane?
A flight from London Heathrow to Kos will travel around 1686.2 mi. Typically, this will take 9h 05m by plane in normal conditions.
When did momondo last update prices for flights from London Heathrow Airport to Kos Airport?
Prices for flights from London Heathrow Airport to Kos Airport refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Kos Airport?
The number of operators available for flights from London Heathrow Airport to Kos Airport is 2 as of December 2025.
How old do you have to be to fly from London Heathrow Airport to Kos Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Kos Airport.
What documentation or ID do you need to fly to Kos Airport?
The required travel and health documents for your Kos Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kos Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London Heathrow Airport to Kos?
Based on momondo bookings for flights between London Heathrow Airport and Kos, the leading plane model is Airbus A320neo, making up 27.27% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 27.27%, Airbus A321-100/200 with 18.18%, and Airbus A320-100/200 with 18.18%.
What is the most popular airline from London Heathrow Airport to Kos?
Based on momondo bookings for flights between London Heathrow Airport and Kos, the leading airline is Aegean Airlines, making up 56% of the total bookings. Other popular airlines include Lufthansa with 44%.

Best airlines flying from London Heathrow Airport to Kos

Compare and see reviews for airlines that fly from London Heathrow Airport to Kos with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £130	Free Cancellation	Rating 6.8 7,631 reviews		Search Lufthansa flights
Aegean Airlines	PriceFrom £184	Free Cancellation	Rating 8.1 833 reviews		Search Aegean Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from London to Kos?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kos from London.

Can I find flights from London to Kos with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Kos from London with this policy.

How can momondo help me find flights from London to Kos?

Once you have performed a search for London to Kos flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Kos right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Kos now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kos and let you know when they change.