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Korean Air · Route guide

Korean Air: ICN (Seoul-Incheon) to LHR (London Heathrow) Flight Route Insights

Everything you need to fly Seoul-Incheon to London Heathrow: when to go, who flies it, what it costs, and how to land well.

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4 airlines on this route · Daily scheduled service

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Airline

Korean Air

Service

Daily scheduled service

Region

East Asia to Europe

The route

Welcome to your comprehensive guide for the Korean Air route from Seoul-Incheon International Airport (ICN) to London Heathrow Airport (LHR). This popular long-haul flight connects two major global hubs, offering passengers a direct link between South Korea and the United Kingdom. Key data points for this route include an average flight duration of approximately , covering a distance of around . Korean Air typically operates flights on this route, utilizing aircraft such as the . Discover more about schedules, aircraft, and travel tips below.

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Airports

Taking off, touching down.

Check-in, security, connections and getting into town at both ends of the flight.

Departure

Seoul Incheon (ICN)

ICN

Check-in: Incheon is consistently rated among the world's most efficient airports — the standard international buffer still applies for a long-haul departure.
Security: Security here is generally fast relative to other major hubs.
Connections: The AREX express train reaches Seoul Station in around 43 minutes.

Arrival

London Heathrow (LHR)

LHR

On arrival: Confirm your arrival terminal ahead of time — Heathrow's terminals are organized by airline/alliance and not walkable to each other.
Ground transport: The Heathrow Express reaches Paddington in 15 minutes; the Elizabeth line is a cheaper, slightly slower alternative.
Planning ahead: UK Border Force queues can be long at peak long-haul arrival banks — budget buffer time for tight onward plans.

Timing & fares

When it flies, what it costs.

Fares & booking

Booking window: Booking 2-3 months ahead is a reasonable window for this long-haul route outside Korean and UK holiday peaks.
Cabin advice: At around 14 hours in the air, Korean Air's Prestige business class is a meaningful upgrade for comfort on this sector.
Peak pricing: Summer and the Christmas/New Year period both push fares up on this corridor.

Tours and experiences at either end

Vetted day trips and activities in London Heathrow and Seoul-Incheon, through our travel partner.

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When to fly

Best Time to Fly from ICN (Seoul-Incheon) to LHR (London Heathrow)

The best time to fly from Seoul (ICN) to London (LHR) can depend on factors like weather preferences and peak travel seasons. Spring (April-May) and Autumn (September-October) in London generally offer pleasant weather. Airfares may be higher during summer holidays (June-August) and around major holidays like Christmas and Easter. Shoulder seasons might offer a good balance of weather and flight prices. Consider booking in advance for better deals, especially if your travel dates are fixed. User experiences suggest .

Field notes

Travel Tips for Your Flight from ICN (Seoul-Incheon) to LHR (London Heathrow)

01
Ensure your passport and any necessary UK visas are valid for your travel dates. Check current entry requirements.
02
The flight from ICN to LHR is a long-haul journey. Pack essentials in your carry-on, such as a neck pillow, entertainment, and any medication.
03
London Heathrow (LHR) is a large and busy airport. Familiarize yourself with your arrival terminal and transportation options into London (e.g., Heathrow Express, London Underground, Taxis).
04
Consider exchanging currency (KRW to GBP) before your trip or withdrawing GBP from ATMs upon arrival at LHR.
05
Factor in the time difference between Seoul and London () and plan accordingly to minimize jet lag.

Carriers

Airlines Operating Flights from ICN (Seoul-Incheon) to LHR (London Heathrow)

Korean Air

Operates direct flights daily. Check current schedules for exact timings.

Asiana Airlines

Offers direct flights. Verify schedule for up-to-date information.

British Airways

Provides direct flights per week. Confirm availability and times.

Offers connecting flights with varying frequencies. Explore options for layovers.

FAQ

Common questions.

Straight answers about flying Seoul-Incheon to London Heathrow.

How long is the flight from Seoul to London?

Typically around 14 hours on this route, per the schedule published on this page — verify against your specific booking as it can vary with routing/winds.

Does Korean Air fly this route nonstop?

Yes, this page covers Korean Air's direct ICN-LHR service.

Do I need a UK ETA?

Most visitors now need to arrange a UK ETA in advance — check current requirements before travel.

Keep exploring

Where to next.

Countries & layovers

London layover guide Seoul layover guide

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