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Cheap flights from Iceland to London Heathrow Airport from £66

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 23/12. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
9 Nov — 16 Nov1
1 adult
1 adult, Economy

Cheap flight deals from Iceland to Heathrow

Keep the following information in mind while searching for Iceland to Heathrow flight deals. Data was last updated 10 October 2025.

Round-trip from

£139

One-way from

£66

Popular in

June

Cheapest in

March

Average price

£191

Good round-trip deal

£297 or less

Good one-way deal

£173 or less
British Airways
  • British Airways
  • 23/1-25/1
  • Nonstop
  • 6h 25m total
  • Iceland to London
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Scandinavian Airlines
  • Scandinavian Airlines
  • 23/12
  • 1 total stop
  • 20h 55m total
  • Iceland to London
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£48 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Iceland to London Heathrow.
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Price to beat on a one-way flight from Iceland to London Heathrow.
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Find flight deals from Iceland to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Iceland to Heathrow
Explore the most affordable flight options available from Iceland to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.

Sat 6/1211:55KEF - LHR
Nonstop3h 10mBritish Airways
Tue 9/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 8/10£149
Fri 5/1218:10KEF - LHR
Nonstop3h 00mBritish Airways
Mon 8/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 10/10£152
Fri 28/1118:10KEF - LHR
Nonstop3h 00mBritish Airways
Sun 30/1107:20LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 8/10£156
Fri 5/1218:10KEF - LHR
Nonstop3h 00mBritish Airways
Sun 7/1207:20LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 10/10£158
Tue 2/1211:50KEF - LHR
Nonstop3h 10mBritish Airways
Tue 9/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 8/10£161
Tue 9/1211:50KEF - LHR
Nonstop3h 10mBritish Airways
Sat 13/1207:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 9/10£162
Fri 5/1218:10KEF - LHR
Nonstop3h 00mBritish Airways
Fri 12/1213:50LHR - KEF
Nonstop3h 25mBritish Airways
Deal found 8/10£163
Sun 7/1211:15KEF - LHR
1 stop7h 35mMultiple Airlines
Sat 13/1220:35LHR - KEF
Nonstop3h 20mMultiple Airlines
Deal found 9/10£164
Fri 21/1118:10KEF - LHR
Nonstop3h 00mBritish Airways
Mon 24/1107:35LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 9/10£164
Sat 22/1111:25KEF - LHR
1 stop21h 55mMultiple Airlines
Sat 29/1120:35LHR - KEF
Nonstop3h 20mMultiple Airlines
Deal found 8/10£165

Cheapflights Fare Finder

 
Customise your flight search to find flights from Iceland to Heathrow 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 10 October 2025.
Use the filters below to find and compare flights from Iceland to London Heathrow Airport that are best for you.

Fly from

Iceland

Fly to

Heathrow

Route

Depart

Return

Price

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 23/1

18:10-21:10

Nonstop3h 00m

London Heathrow

Sun 25/1

13:40-17:05

Nonstop3h 25m

£139

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 15/1

11:45-14:55

Nonstop3h 10m

London Heathrow

Wed 21/1

07:30-10:50

Nonstop3h 20m

£148

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 22/1

11:45-14:55

Nonstop3h 10m

London Heathrow

Sun 25/1

20:35-23:55

Nonstop3h 20m

£152

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 5/12

18:10-21:10

Nonstop3h 00m

London Heathrow

Sun 7/12

07:20-10:40

Nonstop3h 20m

£158

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 28/11

18:10-21:10

Nonstop3h 00m

London Heathrow

Sun 30/11

07:20-10:40

Nonstop3h 20m

£161

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 2/12

11:50-15:00

Nonstop3h 10m

London Heathrow

Tue 9/12

07:35-10:55

Nonstop3h 20m

£161

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 30/1

11:50-15:00

Nonstop3h 10m

London Heathrow

Tue 3/2

07:35-10:55

Nonstop3h 20m

£163

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sun 28/12

17:55-20:55

Nonstop3h 00m

London Heathrow

Sun 4/1

07:20-10:40

Nonstop3h 20m

£177

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 15/1

20:00-09:00

1 stop13h 00m

London Heathrow

Wed 21/1

11:45-19:05

1 stop7h 20m

£180

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 22/1

20:00-09:00

1 stop13h 00m

London Heathrow

Sun 25/1

08:40-19:05

1 stop10h 25m

£180

Flights are sorted by cheapest return flights first.

Deals found on 8/10

Showing 1-10 of 23 results
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Best time to book a flight from Iceland to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Iceland 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 Iceland to London Heathrow Airport

What is the cheapest month to book a flight from Iceland to London Heathrow Airport?

Currently, December is the cheapest month in which you can book a flight from Iceland to London Heathrow Airport (average of £133). Flying from Iceland to London Heathrow Airport in September is currently the most expensive (average of £270). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IS to LHR?

Find hourly flight availability from Iceland to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 October 2025.

When flying from Iceland to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Iceland to London Heathrow Airport

Explore weekly flight availability from Iceland to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 October 2025.

The most flights from IS0 to LHR are scheduled on a Wednesday (12 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

Related info for your journey

Find useful and relevant information for your journey from Iceland to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Iceland to London Heathrow Airport?

    Airlines like British Airways fly from Iceland to London Heathrow Airport in about 3h. The time it takes to get you to your destination is usually consistent. The distance from Iceland to London Heathrow Airport is about 1177 mi. All flights are typically direct.

  • What are the most reliable airlines from Iceland to London Heathrow Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Iceland to London Heathrow Airport on time: Turkish Airlines (92%), Emirates (86%), Icelandair (86%).

  • What are the cheapest flights from Iceland to London Heathrow Airport?

    The cheapest flight price from Iceland to London Heathrow Airport is £116. On average you can expect to pay £375. The most popular route, (Reykjavik Keflavik Intl - London Heathrow), can usually be booked for £139.

  • Can I find deals for flights from Iceland to Heathrow that include hotel bookings?

    Yes. In addition to deals on Iceland to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Iceland to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Iceland to Heathrow.

  • Can I find deals for business class flights from Iceland to Heathrow?

    Yes. Cheapflights offers flight deals from Iceland to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Iceland to London Heathrow Airport?

    Currently, December is the cheapest month in which you can book a flight from Iceland to London Heathrow Airport (average of £133). Flying from Iceland to London Heathrow Airport in September is currently the most expensive (average of £270). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Swindon
Romford
Ipswich
Brentford
Dartford

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Alternative routes for Iceland to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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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 Iceland to Heathrow?

Cheapflights makes it easy to find Iceland to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Iceland to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Iceland to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Iceland to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Iceland to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Iceland to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Iceland to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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