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Cheap flights from London Heathrow Airport to Kos from £99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Kos departing on 15/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Kos

Cheap return flights

Enter your travel dates to find the best prices.
Aegean Airlines Logo
19:00 - 17:05LHR-KGS
20h 05m1 stop
Aegean Airlines Logo
16:40 - 21:15KGS-LHR
6h 35m1 stop
£169Aegean Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Aegean Airlines Logo
22:15 - 08:05LHR-KGS
7h 50m1 stop
Aegean Airlines Logo
21:05 - 21:15KGS-LHR
26h 10m1 stop
£233Aegean Airlines
Find Deal
Sun, 14 Dec - Sun, 21 Dec
Aegean Airlines Logo
22:15 - 00:35LHR-KGS
24h 20m1 stop
Aegean Airlines Logo
09:20 - 21:10KGS-LHR
13h 50m1 stop
£245Aegean Airlines
Find Deal
Sun, 5 Apr - Sun, 19 Apr
Aegean Airlines Logo
16:35 - 00:35LHR-KGS
6h 00m1 stop
Aegean Airlines Logo
13:05 - 17:55KGS-LHR
6h 50m1 stop
£251Aegean Airlines
Find Deal
Sat, 4 Apr - Fri, 17 Apr
Aegean Airlines Logo
22:15 - 08:50LHR-KGS
8h 35m1 stop
Aegean Airlines Logo
13:05 - 21:10KGS-LHR
10h 05m1 stop
£252Aegean Airlines
Find Deal
Sun, 5 Apr - Mon, 20 Apr
Aegean Airlines Logo
22:15 - 19:30LHR-KGS
43h 15m2 stops
Aegean Airlines Logo
21:05 - 21:15KGS-LHR
26h 10m1 stop
£263Aegean Airlines
Find Deal
Sun, 14 Dec - Sun, 21 Dec
Multiple Airlines Logo
20:15 - 17:05LHR-KGS
18h 50m2 stops
Multiple Airlines Logo
20:35 - 15:50KGS-LHR
21h 15m2 stops
£269Multiple Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Multiple Airlines Logo
08:45 - 20:35LHR-KGS
33h 50m2 stops
Multiple Airlines Logo
08:35 - 17:55KGS-LHR
11h 20m1 stop
£269Multiple Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Aegean Airlines Logo
22:15 - 08:50LHR-KGS
8h 35m1 stop
Aegean Airlines Logo
13:05 - 17:55KGS-LHR
6h 50m1 stop
£270Aegean Airlines
Find Deal
Tue, 7 Apr - Mon, 20 Apr
SWISS Logo
06:00 - 18:45LHR-KGS
10h 45m1 stop
SWISS Logo
19:30 - 17:50KGS-LHR
24h 20m2 stops
£441SWISS
Find Deal
Mon, 6 Apr - Mon, 20 Apr

Aegean Airlines flights from London Heathrow Airport to Kos

Our best Aegean Airlines deals on London Heathrow Airport to Kos flight tickets
Aegean Airlines
4 Dec
LHR19:00London Heathrow
20h 05m
1 stop
KGS17:05Kos
11 Dec
KGS16:40Kos
6h 35m
1 stop
LHR21:15London Heathrow
£169
Find similar
Aegean Airlines
14 Dec
LHR22:15London Heathrow
7h 50m
1 stop
KGS08:05Kos
21 Dec
KGS21:05Kos
26h 10m
1 stop
LHR21:15London Heathrow
£233
Find similar
Aegean Airlines
8 Nov
LHR22:15London Heathrow
11h 50m
1 stop
KGS12:05Kos
16 Nov
KGS21:05Kos
16h 05m
1 stop
LHR11:10London Heathrow
£244
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 31 October 2025.
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

Thu 4/12

19:00-17:05

1 stop20h 05m

Kos

Thu 11/12

16:40-21:15

1 stop6h 35m

£169

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 14/12

22:15-08:05

1 stop7h 50m

Kos

Sun 21/12

21:05-21:15

1 stop26h 10m

£233

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 5/4

22:15-00:35

1 stop24h 20m

Kos

Sun 19/4

09:20-21:10

1 stop13h 50m

£245

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sat 4/4

16:35-00:35

1 stop6h 00m

Kos

Fri 17/4

13:05-17:55

1 stop6h 50m

£251

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 5/4

22:15-08:50

1 stop8h 35m

Kos

Mon 20/4

13:05-21:10

1 stop10h 05m

£252

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sun 14/12

22:15-19:30

2 stops43h 15m

Kos

Sun 21/12

21:05-21:15

1 stop26h 10m

£263

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Thu 4/12

20:15-17:05

2 stops18h 50m

Kos

Thu 11/12

20:35-15:50

2 stops21h 15m

£269

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Thu 4/12

08:45-20:35

2 stops33h 50m

Kos

Thu 11/12

08:35-17:55

1 stop11h 20m

£269

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 7/4

22:15-08:50

1 stop8h 35m

Kos

Mon 20/4

13:05-17:55

1 stop6h 50m

£270

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 6/4

06:00-18:45

1 stop10h 45m

Kos

Mon 20/4

19:30-17:50

2 stops24h 20m

£441

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Kos from

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

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 £213. 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 £402.

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 £204. In the morning is when there is more demand to fly to Kos, so prices are often more expensive at around £303 per ticket.

What is the cheapest London Heathrow to Kos flight route?

Fly from London Heathrow to Kos for the best London Heathrow - Kos flight prices

What cabin class options are available on London Heathrow to Kos flights?

There is only 1 cabin class available to choose from on London Heathrow to Kos flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

Direct flights

None
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 6h 00m 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?

  • 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?

  • What is the most popular airline from London Heathrow Airport to Kos?

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
LufthansaPriceFrom £136Free CancellationRating
6.8
7,542 reviews
Search Lufthansa flights
Aegean AirlinesPriceFrom £175Free CancellationRating
8.1
814 reviews
Search Aegean Airlines flights
British AirwaysPriceFrom £244Free CancellationRating
6.7
7,488 reviews
Search British Airways flights

Travelling to a place near Kos?

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

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.

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