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Cheap flights from London Heathrow Airport to Kos from £106

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 2/10. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London Heathrow Airport to Kos

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:50 - 16:25
LHR
-
KGS
7h 35m
1 stop
Multiple Airlines Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£155Multiple Airlines
Fri, 25 Sep - Tue, 29 Sep
Multiple Airlines Logo
11:05 - 19:35
LHR
-
KGS
6h 30m
1 stop
Multiple Airlines Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£156Multiple Airlines
Sat, 12 Sep - Tue, 15 Sep
SWISS Logo
08:45 - 19:40
LHR
-
KGS
8h 55m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£157SWISS
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
08:45 - 19:40
LHR
-
KGS
8h 55m
1 stop
Multiple Airlines Logo
21:10 - 08:20
KGS
-
LHR
13h 10m
1 stop
£167Multiple Airlines
Tue, 15 Sep - Thu, 24 Sep
SWISS Logo
18:40 - 10:10
LHR
-
KGS
13h 30m
1 stop
SWISS Logo
20:40 - 07:55
KGS
-
LHR
13h 15m
1 stop
£168SWISS
Wed, 9 Sep - Wed, 16 Sep
SWISS Logo
08:45 - 19:40
LHR
-
KGS
8h 55m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£169SWISS
Tue, 11 Aug - Tue, 18 Aug
SWISS Logo
06:00 - 19:40
LHR
-
KGS
11h 40m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£180SWISS
Tue, 18 Aug - Tue, 25 Aug
Austrian Airlines Logo
06:00 - 20:20
LHR
-
KGS
12h 20m
1 stop
Austrian Airlines Logo
21:10 - 08:20
KGS
-
LHR
13h 10m
1 stop
£182Austrian Airlines
Thu, 1 Oct - Thu, 8 Oct
SWISS Logo
20:05 - 19:40
LHR
-
KGS
21h 35m
1 stop
SWISS Logo
11:00 - 17:50
KGS
-
LHR
8h 50m
1 stop
£182SWISS
Mon, 31 Aug - Mon, 7 Sep
SWISS Logo
06:00 - 19:40
LHR
-
KGS
11h 40m
1 stop
SWISS Logo
20:30 - 21:30
KGS
-
LHR
27h 00m
2 stops
£185SWISS
Tue, 25 Aug - Tue, 1 Sep

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SWISS flights from London Heathrow Airport to Kos

Our best SWISS deals on London Heathrow Airport to Kos flight tickets
SWISS
8 Sept
LHR08:45London Heathrow
8h 55m
1 stop
KGS19:40Kos
15 Sept
KGS20:30Kos
13h 25m
1 stop
LHR07:55London Heathrow
£157
SWISS
9 Sept
LHR18:40London Heathrow
13h 30m
1 stop
KGS10:10Kos
16 Sept
KGS20:40Kos
13h 15m
1 stop
LHR07:55London Heathrow
£168
SWISS
11 Aug
LHR08:45London Heathrow
8h 55m
1 stop
KGS19:40Kos
18 Aug
KGS20:30Kos
13h 25m
1 stop
LHR07:55London Heathrow
£169

Aegean Airlines flights from London Heathrow Airport to Kos

Our best Aegean Airlines deals on London Heathrow Airport to Kos flight tickets
Aegean Airlines
17 Oct
LHR22:15London Heathrow
7h 20m
1 stop
KGS07:35Kos
20 Oct
KGS06:00Kos
7h 15m
1 stop
LHR11:15London Heathrow
£224
Aegean Airlines
21 Sept
LHR16:35London Heathrow
13h 00m
1 stop
KGS07:35Kos
29 Sept
KGS06:00Kos
7h 15m
1 stop
LHR11:15London Heathrow
£227
Aegean Airlines
28 Jul
LHR16:35London Heathrow
6h 00m
1 stop
KGS00:35Kos
31 Jul
KGS06:00Kos
7h 15m
1 stop
LHR11:15London Heathrow
£373

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 27 July 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

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Fri 25/9

06:50-16:25

1 stop7h 35m

Kos

Tue 29/9

20:30-07:55

1 stop13h 25m

£155
Fastest return journey

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Sat 12/9

11:05-19:35

1 stop6h 30m

Kos

Tue 15/9

20:30-07:55

1 stop13h 25m

£156

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 8/9

08:45-19:40

1 stop8h 55m

Kos

Tue 15/9

20:30-07:55

1 stop13h 25m

£157

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 15/9

08:45-19:40

1 stop8h 55m

Kos

Thu 24/9

21:10-08:20

1 stop13h 10m

£167

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Wed 9/9

18:40-10:10

1 stop13h 30m

Kos

Wed 16/9

20:40-07:55

1 stop13h 15m

£168

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 11/8

08:45-19:40

1 stop8h 55m

Kos

Tue 18/8

20:30-07:55

1 stop13h 25m

£169

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 18/8

06:00-19:40

1 stop11h 40m

Kos

Tue 25/8

20:30-07:55

1 stop13h 25m

£180

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Thu 1/10

06:00-20:20

1 stop12h 20m

Kos

Thu 8/10

21:10-08:20

1 stop13h 10m

£182

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Mon 31/8

20:05-19:40

1 stop21h 35m

Kos

Mon 7/9

11:00-17:50

1 stop8h 50m

£182

LondonKos

LHR - KGS

LHRKGS

London Heathrow

Tue 25/8

06:00-19:40

1 stop11h 40m

Kos

Tue 1/9

20:30-21:30

2 stops27h 00m

£185

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, Tuesday is the cheapest day to fly to Kos from London Heathrow Airport. The lowest ticket price found for a Tuesday departure recently was £212. 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 £380.

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 £191. In the morning is when there is more demand to fly to Kos, so prices are often more expensive at around £290 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

6h 30m

Direct flights

None
The fastest flight from London Heathrow Airport to Kos takes 6h 30m
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

Frequently asked questions about flying from London Heathrow Airport to Kos

  • 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 30m 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 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
SWISSPriceFrom £206Free CancellationRating
7.5
2,016 reviews
Search SWISS flights
Aegean AirlinesPriceFrom £222Free CancellationRating
8.2
903 reviews
Search Aegean Airlines 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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