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Cheap flights from Iceland to London Heathrow Airport from £74

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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
18 Jun — 25 Jun1
1 adult

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 13 June 2025.

Round-trip from

£146

One-way from

£74

Good round-trip deal

£177 or less

Good one-way deal

£184 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 9/10-9/10
  • 2 total stops
  • 18h 35m total
  • Iceland to London
Search Deals
British Airways
  • British Airways
  • 4/11
  • Nonstop
  • 3h 15m total
  • Iceland to London
Search Deals
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

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 13 June 2025.

Thu 9/1010:20KEF - LHR
1 stop6h 20mScandinavian Airlines
Thu 9/1019:50LHR - KEF
1 stop12h 15mScandinavian Airlines
Deal found 11/6£146
Thu 18/1211:40KEF - LHR
Nonstop3h 15mBritish Airways
Wed 31/1207:30LHR - KEF
Nonstop3h 20mBritish Airways
Deal found 12/6£149
Thu 18/1213:15KEF - LHR
2 stops8h 25mMultiple Airlines
Wed 31/1207:30LHR - KEF
Nonstop3h 20mMultiple Airlines
Deal found 12/6£173
Wed 1/1016:10KEF - LHR
Nonstop3h 10mIcelandair
Wed 15/1013:05LHR - KEF
Nonstop3h 10mIcelandair
Deal found 11/6£188
Thu 18/1215:10KEF - LHR
1 stop7h 45mLufthansa
Tue 30/1208:45LHR - KEF
2 stops28h 35mLufthansa
Deal found 12/6£235
Sat 14/614:50KEF - LHR
1 stop16h 05mSWISS
Sat 28/620:05LHR - KEF
1 stop28h 50mSWISS
Deal found 12/6£255
Sun 27/719:00KEF - LHR
1 stop11h 40mKLM
Sun 3/820:55LHR - KEF
1 stop11h 55mKLM
Deal found 12/6£319

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 13 June 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

Thu 9/10

10:20-17:40

1 stop6h 20m

London Heathrow

Thu 9/10

19:50-07:05

1 stop12h 15m

£146

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 24/6

14:20-22:10

1 stop6h 50m

London Heathrow

Thu 26/6

20:05-08:15

1 stop13h 10m

£185

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 1/10

16:10-20:20

Nonstop3h 10m

London Heathrow

Wed 15/10

13:05-15:15

Nonstop3h 10m

£188

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 25/6

00:25-07:40

1 stop6h 15m

London Heathrow

Mon 30/6

10:30-08:35

2 stops23h 05m

£263

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Thu 26/6

09:10-07:55

1 stop21h 45m

London Heathrow

Mon 30/6

20:05-08:35

1 stop13h 30m

£280

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sun 27/7

19:00-07:40

1 stop11h 40m

London Heathrow

Sun 3/8

20:55-07:50

1 stop11h 55m

£319

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Fri 4/7

10:30-14:40

Nonstop3h 10m

London Heathrow

Sun 6/7

07:25-09:30

Nonstop3h 05m

£325

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Tue 4/11

11:45-15:00

Nonstop3h 15m

£74

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Sat 27/9

17:45-09:35

1 stop14h 50m

£80

ReykjavikLondon

KEF - LHR

KEFLHR

Reykjavik Keflavik Intl

Wed 20/8

08:05-07:25

1 stop22h 20m

£109

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 15 results
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, January is the cheapest month in which you can book a flight from Iceland to London Heathrow Airport (average of £112). Flying from Iceland to London Heathrow Airport in August is currently the most expensive (average of £164). 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 13 June 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 13 June 2025.

The most flights from IS0 to LHR are scheduled on a Wednesday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 13 June 2025.
Read reviews from past customers who have flown KLM, SWISS and Scandinavian Airlines from Iceland to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,624 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Scandinavian Airlines
7.3
Good
1,387 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Vueling
7.1
Good
1,169 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Icelandair
7.0
Good
499 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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.

  • What are the cheapest airlines to fly from Iceland to London Heathrow Airport one-way?

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as £74. Users have also found prices from £80 and £124 on Scandinavian Airlines and Eurowings, respectively.

  • 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: Emirates (100%), Japan Airlines (93%), American Airlines (92%).

  • 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 £583. The most popular route, (Reykjavik Keflavik Intl - London Heathrow), can usually be booked for £124.

  • 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, January is the cheapest month in which you can book a flight from Iceland to London Heathrow Airport (average of £112). Flying from Iceland to London Heathrow Airport in August is currently the most expensive (average of £164). 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 Iceland?

Book flights to Iceland if you plan to visit one of these locations
Deal
Hounslow
Croydon
Milton Keynes
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Southend-on-Sea
Watford
Hayes
Ipswich
Winchester
Folkestone
Maidstone
Swindon

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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.

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