Icelandair flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport (LHR - KEF)

LHR — KEF
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights users flying from London to Reykjavik on Icelandair typically fly into Reykjavik Keflavik Intl and depart from London Heathrow. Select your dates above for pricing.

Icelandair flights from Heathrow to Keflavik Intl in 2025

Find detailed information about Icelandair flights from Heathrow to Keflavik Intl. Explore the options provided by Icelandair to plan your journey from Heathrow to Keflavik Intl. Data last updated 12 December 2025.

Popular in

July

Cheapest in

January

Average price (all airlines)

RM 1,117
Highest demand for flights from London Heathrow to Reykjavik Keflavik Intl; 20% potential price increase.
Best time to find cheap flights from London Heathrow to Reykjavik Keflavik Intl; 4% potential price drop.
Average price for all London Heathrow to Reykjavik Keflavik Intl flights (one-way and round-trip).
  • How do most travelers feel about Icelandair?

    When planning your LHR-KEF trip, keep in mind that Icelandair is typically rated 7.0/10. This rating comes from 589 reviews by Cheapflights users who have traveled with Icelandair.

Travel insights for Icelandair flights from Heathrow to Keflavik Intl

Get recent, data-driven insights about Icelandair flights from Heathrow to Keflavik Intl including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport with Icelandair?

Use this chart to determine the optimal time to book a return flight from Heathrow to Keflavik Intl. Price data was last updated on 5 December 2025.

Booking with Icelandair 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Reykjavik Keflavik Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport with Icelandair?

Currently, the most affordable month to book a Icelandair flight from London Heathrow Airport to Reykjavik Keflavik Intl Airport in January, with an average price of RM 476. Conversely, traveling with Icelandair from London Heathrow Airport to Reykjavik Keflavik Intl Airport in August will be the most expensive, with an average cost of RM 1,129. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Best time to book a flight from Heathrow to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl 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.

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Other Icelandair flights from Heathrow

Browse through other Icelandair flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 12 December 2025.

See what others are saying about Icelandair

Read reviews and see what other travellers are saying about their experiences with Icelandair. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Icelandair for your next flight. Reviews last updated 12 December 2025.
Icelandair
7.0
Good
589 reviews
Overview

Boarding

7.2

Food

6.2

Entertainment

7.0

Crew

8.0

Comfort

6.9

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