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Cheap flights from London Heathrow Airport to Kos from £90

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 15/6. 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.
SWISS Logo
06:00 - 19:55
LHR
-
KGS
11h 55m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£182SWISS
mer, 17 giu - mar, 23 giu
SWISS Logo
06:00 - 19:40
LHR
-
KGS
11h 40m
1 stop
SWISS Logo
11:00 - 19:20
KGS
-
LHR
10h 20m
1 stop
£183SWISS
mar, 23 giu - lun, 29 giu
SWISS Logo
06:00 - 19:40
LHR
-
KGS
11h 40m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£184SWISS
mar, 23 giu - mar, 30 giu
Multiple Airlines Logo
07:25 - 19:05
LHR
-
KGS
9h 40m
1 stop
Multiple Airlines Logo
11:25 - 17:05
KGS
-
LHR
7h 40m
1 stop
£184Multiple Airlines
mer, 10 giu - mer, 17 giu
Austrian Airlines Logo
06:00 - 20:20
LHR
-
KGS
12h 20m
1 stop
Austrian Airlines Logo
21:10 - 21:40
KGS
-
LHR
26h 30m
1 stop
£186Austrian Airlines
gio, 11 giu - gio, 18 giu
SWISS Logo
06:00 - 17:05
LHR
-
KGS
9h 05m
1 stop
SWISS Logo
17:50 - 07:55
KGS
-
LHR
16h 05m
1 stop
£187SWISS
dom, 7 giu - dom, 14 giu
SWISS Logo
06:00 - 17:05
LHR
-
KGS
9h 05m
1 stop
SWISS Logo
17:50 - 07:55
KGS
-
LHR
16h 05m
1 stop
£187SWISS
dom, 7 giu - dom, 14 giu
SWISS Logo
08:45 - 19:40
LHR
-
KGS
8h 55m
1 stop
SWISS Logo
20:30 - 07:55
KGS
-
LHR
13h 25m
1 stop
£193SWISS
mar, 9 giu - mar, 16 giu
SWISS Logo
06:00 - 20:00
LHR
-
KGS
12h 00m
1 stop
SWISS Logo
11:00 - 21:45
KGS
-
LHR
12h 45m
1 stop
£194SWISS
sab, 16 mag - lun, 8 giu
Austrian Airlines Logo
09:05 - 20:20
LHR
-
KGS
9h 15m
1 stop
Austrian Airlines Logo
21:10 - 08:20
KGS
-
LHR
13h 10m
1 stop
£195Austrian Airlines
gio, 28 mag - gio, 4 giu

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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
17 Jun
LHR06:00London Heathrow
11h 55m
1 stop
KGS19:55Kos
23 Jun
KGS20:30Kos
13h 25m
1 stop
LHR07:55London Heathrow
£182
SWISS
23 Jun
LHR06:00London Heathrow
11h 40m
1 stop
KGS19:40Kos
29 Jun
KGS11:00Kos
10h 20m
1 stop
LHR19:20London Heathrow
£183
SWISS
23 Jun
LHR06:00London Heathrow
11h 40m
1 stop
KGS19:40Kos
30 Jun
KGS20:30Kos
13h 25m
1 stop
LHR07:55London Heathrow
£184

Aegean Airlines flights from London Heathrow Airport to Kos

Our best Aegean Airlines deals on London Heathrow Airport to Kos flight tickets
Aegean Airlines
10 Oct
LHR22:15London Heathrow
12h 20m
1 stop
KGS12:35Kos
17 Oct
KGS08:10Kos
15h 00m
1 stop
LHR21:10London Heathrow
£228
Aegean Airlines
7 May
LHR16:35London Heathrow
6h 00m
1 stop
KGS00:35Kos
14 May
KGS09:20Kos
10h 35m
1 stop
LHR17:55London Heathrow
£284
Aegean Airlines
5 May
LHR22:15London Heathrow
8h 35m
1 stop
KGS08:50Kos
12 May
KGS13:05Kos
6h 50m
1 stop
LHR17:55London Heathrow
£296

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 30 aprile 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

mer 17/6

06:00-19:55

1 stop11h 55m

Kos

mar 23/6

20:30-07:55

1 stop13h 25m

£182

LondonKos

LHR - KGS

LHRKGS

London Heathrow

mar 23/6

06:00-19:40

1 stop11h 40m

Kos

lun 29/6

11:00-19:20

1 stop10h 20m

£183

LondonKos

LHR - KGS

LHRKGS

London Heathrow

mar 23/6

06:00-19:40

1 stop11h 40m

Kos

mar 30/6

20:30-07:55

1 stop13h 25m

£184
Fastest return journey

LondonKos

LHR - KGS

LHRKGS

London Heathrow

mer 10/6

07:25-19:05

1 stop9h 40m

Kos

mer 17/6

11:25-17:05

1 stop7h 40m

£184

LondonKos

LHR - KGS

LHRKGS

London Heathrow

gio 11/6

06:00-20:20

1 stop12h 20m

Kos

gio 18/6

21:10-21:40

1 stop26h 30m

£186

LondonKos

LHR - KGS

LHRKGS

London Heathrow

dom 7/6

06:00-17:05

1 stop9h 05m

Kos

dom 14/6

17:50-07:55

1 stop16h 05m

£187

LondonKos

LHR - KGS

LHRKGS

London Heathrow

dom 7/6

06:00-17:05

1 stop9h 05m

Kos

dom 14/6

17:50-07:55

1 stop16h 05m

£187

LondonKos

LHR - KGS

LHRKGS

London Heathrow

mar 9/6

08:45-19:40

1 stop8h 55m

Kos

mar 16/6

20:30-07:55

1 stop13h 25m

£193

LondonKos

LHR - KGS

LHRKGS

London Heathrow

sab 16/5

06:00-20:00

1 stop12h 00m

Kos

lun 8/6

11:00-21:45

1 stop12h 45m

£194

LondonKos

LHR - KGS

LHRKGS

London Heathrow

gio 28/5

09:05-20:20

1 stop9h 15m

Kos

gio 4/6

21:10-08:20

1 stop13h 10m

£195

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 typical price of a round-trip flight between London Heathrow Airport and Kos?

What is the cheapest month to fly to Kos?

The cheapest month to fly to Kos from London Heathrow Airport is in December. Flight prices, which tend to average around £0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Kos from London Heathrow Airport during February instead. Flights to Kos in February, while not as cheap as those in December, still average around £0.

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 £222. 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 £376.

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 £289 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 15m

Direct flights

None
The fastest flight from London Heathrow Airport to Kos takes 6h 15m
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 15m 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
LufthansaPriceFrom £129Free CancellationRating
6.8
7,962 reviews
Search Lufthansa flights
Aegean AirlinesPriceFrom £219Free CancellationRating
8.1
870 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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