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Cheap flights from London Heathrow Airport to Reykjavik from £81

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 22/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — REK
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Heathrow to Reykjavik

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Reykjavik (IS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 June 2025.

Round-trip from

£129

One-way from

£81

Popular in

July

Cheapest in

February

Average price

£244
Icelandair
  • Icelandair
  • 4/12-10/12
  • Nonstop
  • 6h 30m total
  • London to Reykjavik
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British Airways
  • British Airways
  • 22/11
  • Nonstop
  • 3h 20m total
  • London to Reykjavik
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£64 potential increase over avg. return price).
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Cheapest flight prices on average. 9% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Heathrow to Reykjavik

Cheapest flights from Heathrow to Reykjavik
Explore the most affordable flight options available from Heathrow to Reykjavik. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Thu 4/1212:15LHR - KEF
Nonstop3h 15mIcelandair
Wed 10/1207:35KEF - LHR
Nonstop3h 15mIcelandair
Deal found 10/6£129
Sat 22/1115:35LHR - KEF
1 stop18h 55mScandinavian Airlines
Thu 27/1111:30KEF - LHR
1 stop10h 05mScandinavian Airlines
Deal found 11/6£137
Sun 30/1113:45LHR - KEF
Nonstop3h 25mBritish Airways
Wed 3/1211:45KEF - LHR
Nonstop3h 15mBritish Airways
Deal found 12/6£143
Sat 6/1206:40LHR - KEF
1 stop27h 50mMultiple Airlines
Thu 11/1211:40KEF - LHR
Nonstop3h 15mMultiple Airlines
Deal found 12/6£148
Sun 12/1009:05LHR - KEF
1 stop15h 15mAustrian Airlines
Sun 19/1000:10KEF - LHR
1 stop7h 50mAustrian Airlines
Deal found 13/6£205
Thu 19/617:50LHR - KEF
1 stop7h 20mLufthansa
Wed 25/600:25KEF - LHR
1 stop6h 15mLufthansa
Deal found 11/6£208

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Reykjavik 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 London Heathrow Airport to Reykjavik that are best for you.

Fly from

Heathrow

Fly to

Reykjavik

Route

Depart

Return

Price

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Thu 4/12

12:15-15:30

Nonstop3h 15m

Reykjavik Keflavik Intl

Wed 10/12

07:35-10:50

Nonstop3h 15m

£129

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 22/11

15:35-10:30

1 stop18h 55m

Reykjavik Keflavik Intl

Thu 27/11

11:30-21:35

1 stop10h 05m

£137

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 30/11

13:45-17:10

Nonstop3h 25m

Reykjavik Keflavik Intl

Wed 3/12

11:45-15:00

Nonstop3h 15m

£143

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 6/12

06:40-10:30

1 stop27h 50m

Reykjavik Keflavik Intl

Thu 11/12

11:40-14:55

Nonstop3h 15m

£148

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 12/10

09:05-23:20

1 stop15h 15m

Reykjavik Keflavik Intl

Sun 19/10

00:10-09:00

1 stop7h 50m

£205

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sat 22/11

07:35-10:55

Nonstop3h 20m

£81

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Fri 19/9

17:30-10:10

1 stop17h 40m

£82

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Tue 16/9

06:55-07:25

1 stop25h 30m

£86

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Wed 27/8

21:25-23:35

Nonstop3h 10m

£108

LondonReykjavik

LHR - KEF

LHRKEF

London Heathrow

Sun 14/9

08:55-08:35

2 stops48h 40m

£149

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 13 results
1
2

Best time to book a flight from Heathrow to Reykjavik

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

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik (average of £75). Flying from London Heathrow Airport to Reykjavik in July is currently the most expensive (average of £289). 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 LHR to KEF?

Find hourly flight availability from Heathrow to Reykjavik. 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.

It’s typically best to fly out from London Heathrow Airport to Reykjavik at midday. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Reykjavik?

Use this chart to determine the cheapest time to fly return from Heathrow to Reykjavik. Price data was last updated on 8 June 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Reykjavik flight should consider departing on Friday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Reykjavik

Explore weekly flight availability from Heathrow to Reykjavik. 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 LHR to IS1 are scheduled on a Wednesday (10 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Reykjavik by month

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

In terms of precipitation, rainfall in Reykjavik ranges from 40.0 - 80.0 inches per month. January is typically the wettest month, when rainfall can reach 80.0 mm. May is typically the driest time to visit Reykjavik when rainfall is around 40.0 mm.

Temperature in Reykjavik by month

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

If weather is an important factor for your trip to Reykjavik, 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 11.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing Reykjavik

Get insights into the airlines that provide service to Reykjavik. 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 Reykjavik. Reviews last updated 13 June 2025.
To help decide which airline to fly from London to Reykjavik, see what other customers have to say about Austrian Airlines, SWISS and Scandinavian Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
802 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Austrian Airlines
7.6
Good
802 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
SWISS
7.5
Good
1,624 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Scandinavian Airlines
7.3
Good
1,387 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Icelandair
7.0
Good
499 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Iberia
7.0
Good
2,776 reviews
Austrian Airlines
7.6
Good
802 reviews
Check prices

Food

6.8

Entertainment

6.8

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Reykjavik. 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 flying from London Heathrow Airport to Reykjavik round-trip?

    Icelandair, at £129, was found to be the cheapest airline from London Heathrow Airport to Reykjavik.Alternate airlines flying return to your destination include Scandinavian Airlines and British Airways. Icelandair is priced at 27% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as £81 on British Airways. Other airlines that offer cheap prices include Scandinavian Airlines from £82 and Icelandair from £108 one-way.

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

    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 London Heathrow Airport to Reykjavik on time: Emirates (100%), Turkish Airlines (93%), American Airlines (92%).

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

    Looking at all options, your cheapest flight can be booked for £126. While the most popular route (London Heathrow - Reykjavik Keflavik Intl) can be booked for £123 on average our data indicates £877 when flying from London Heathrow Airport to Reykjavik.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Reykjavik 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 London Heathrow Airport to Reykjavik?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Reykjavik (average of £75). Flying from London Heathrow Airport to Reykjavik in July is currently the most expensive (average of £289). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Heathrow to Reykjavik

Discover the top 4 airlines that operate flights from Heathrow to Reykjavik. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£83Average£131FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
British AirwaysCheapest£113Average£195FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£133Average£270FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£135Average£221FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Reykjavik?

Deals for Heathrow to Reykjavik flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Reykjavik 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 Heathrow to Reykjavik with no change fees?

Need flexible booking options for your flight to Reykjavik from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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