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Cheap flights from Iceland to London Heathrow Airport from £73

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
23 Apr — 30 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 24 March 2026.

Thu 23/410:40
KEF
-
LHR
Nonstop3h 10m
British Airways
Sun 26/407:25
LHR
-
KEF
Nonstop3h 05m
British Airways
Deal found 19/3£150
Fri 24/410:30
KEF
-
LHR
Nonstop3h 10m
British Airways
Sun 26/407:25
LHR
-
KEF
Nonstop3h 05m
British Airways
Deal found 24/3£151
Thu 23/410:40
KEF
-
LHR
Nonstop3h 10m
British Airways
Tue 28/407:50
LHR
-
KEF
Nonstop3h 05m
British Airways
Deal found 22/3£157
Wed 22/411:00
KEF
-
LHR
Nonstop3h 10m
British Airways
Tue 28/407:50
LHR
-
KEF
Nonstop3h 05m
British Airways
Deal found 21/3£158
Fri 1/518:25
KEF
-
LHR
1 stop14h 10m
Multiple Airlines
Tue 5/521:25
LHR
-
KEF
Nonstop3h 10m
Multiple Airlines
Deal found 20/3£160
Tue 21/411:15
KEF
-
LHR
1 stop6h 35m
Multiple Airlines
Sat 25/421:25
LHR
-
KEF
Nonstop3h 10m
Multiple Airlines
Deal found 23/3£162
Wed 22/411:15
KEF
-
LHR
1 stop6h 35m
Multiple Airlines
Tue 28/421:25
LHR
-
KEF
Nonstop3h 10m
Multiple Airlines
Deal found 21/3£163
Thu 23/410:40
KEF
-
LHR
Nonstop3h 10m
British Airways
Mon 27/407:40
LHR
-
KEF
Nonstop3h 05m
British Airways
Deal found 22/3£164

Find flight deals from Iceland to Heathrow

Keep the following information in mind while searching for Iceland to Heathrow flight deals. Data was last updated 24 March 2026.

Round-trip from

£145

One-way from

£73

Popular in

July

Cheapest in

November

Average price

£265

Good round-trip deal

£198 or less

Good one-way deal

£119 or less
British Airways
  • British Airways
  • 24/4-26/4
  • Nonstop
  • 6h 15m total
  • Iceland to London
Search Deals
Scandinavian Airlines
  • Scandinavian Airlines
  • 22/4
  • 1 total stop
  • 6h 35m total
  • Iceland to London
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Iceland to London Heathrow.
Search Deals
Price to beat on a one-way flight from Iceland to London Heathrow.
Search Deals

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 24 March 2026.
Use the filters below to find and compare flights from Iceland to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 23/4

10:40-14:50

Nonstop3h 10m

London Heathrow

Sun 26/4

07:25-09:30

Nonstop3h 05m

£164

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 16/4

10:40-14:50

Nonstop3h 10m

London Heathrow

Thu 23/4

07:35-09:40

Nonstop3h 05m

£246

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sun 24/5

20:10-07:40

1 stop10h 30m

London Heathrow

Sun 31/5

06:30-19:10

1 stop13h 40m

£257

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Mon 20/4

11:15-21:35

1 stop9h 20m

London Heathrow

Sat 25/4

15:35-09:50

1 stop19h 15m

£274

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 23/4

09:15-22:40

2 stops12h 25m

London Heathrow

Sun 26/4

07:25-09:30

Nonstop3h 05m

£275

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 8/5

07:55-19:55

2 stops11h 00m

London Heathrow

Fri 15/5

21:05-09:40

2 stops13h 35m

£289

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Mon 4/5

17:05-12:55

2 stops18h 50m

London Heathrow

Mon 11/5

07:05-16:15

2 stops10h 10m

£297

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 22/4

11:15-18:50

1 stop6h 35m

London Heathrow

Sun 26/4

21:05-10:25

2 stops14h 20m

£301

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 21/4

17:05-09:35

2 stops15h 30m

London Heathrow

Sun 26/4

21:05-09:40

2 stops13h 35m

£310

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 26/6

10:30-14:40

Nonstop3h 10m

London Heathrow

Fri 3/7

07:35-09:40

Nonstop3h 05m

£343

Flights are sorted by cheapest return flights first.

Deals found on 20/3

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

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, March is the cheapest month in which you can book a flight from Iceland to London Heathrow Airport (average of £107). Flying from Iceland to London Heathrow Airport in April is currently the most expensive (average of £432). 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 24 March 2026.

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.

How often are flights from Iceland to London delayed?

About 9% of weekly flights between Iceland and London have experienced delays in the past year, with the average delay time being 114 minutes.

What is the most punctual flight time for Iceland to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Iceland to London flights?

Over the past year, Icelandair have had the lowest number of delays on this route, with just 8% of flights being delayed.

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, KLM, and Scandinavian Airlines fly from Iceland to London Heathrow Airport in about 3h 10m. The time it takes to get you to your destination can typically vary by up to 7h 20m. The distance from Iceland to London Heathrow Airport is about 1177 mi. This flight may include one or multiple stops.

  • 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: Qatar Airways (93%), Qantas Airways (93%), Turkish Airlines (92%).

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

    The cheapest flight price from Iceland to London Heathrow Airport is £76. On average you can expect to pay £200. The most popular route, (Reykjavik Keflavik Intl - London Heathrow), can usually be booked for £154.

  • 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, March is the cheapest month in which you can book a flight from Iceland to London Heathrow Airport (average of £107). Flying from Iceland to London Heathrow Airport in April is currently the most expensive (average of £432). 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
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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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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