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Korean Air flights from London Heathrow Airport to Seoul (LHR - SEL)

LHR — SEL
30 Sep — 7 Oct1
1 adult
1 adult, Economy, 0 bags

Find Korean Air flight deals from Heathrow to Seoul

Enter your travel dates to find the best prices.

Cheapest Korean Air flights from Heathrow to Seoul

Sun 6/919:35 -
Nonstop12h 40m
Wed 30/910:55 -
Nonstop14h 25m
Deal found 31/8£767
Wed 16/919:35 -
Nonstop12h 40m
Wed 30/910:55 -
Nonstop14h 25m
Deal found 31/8£770
Mon 28/919:35 -
Nonstop12h 40m
Thu 8/1010:55 -
Nonstop14h 25m
Deal found 29/8£771

  • Can I get a flight from London Heathrow Airport to Seoul on Korean Air for under £813?

    There are 9 flights available on Korean Air from London Heathrow Airport to Seoul for under £813. These prices can change based on many factors including date and time. To find LHR-SEL flight prices for your dates, click here.

Korean Air flights from Heathrow to Seoul in 2026

One-way from

£571

Return from

£585

Popular in

August

Cheapest in

January

Average price (all airlines)

£804
Korean Air
  • Korean Air
  • 20/9
  • Nonstop
  • 12h 40m total
  • London to Seoul
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Korean Air
  • Korean Air
  • 15/2-22/2
  • Nonstop
  • 27h 25m total
  • London to Seoul
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Highest demand for flights from London Heathrow to Seoul; 12% potential price increase.
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Best time to find cheap flights from London Heathrow to Seoul; 2% potential price drop.
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Average price for all London Heathrow to Seoul flights (one-way and round-trip).
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Which month is the cheapest to fly Economy class from London Heathrow Airport to Seoul?

For Economy class flights, the cheapest month to fly this route is March. The most expensive months are July and August.

Rainfall in Seoul by month

In terms of precipitation, rainfall in Seoul ranges from 27.0 - 253.0 inches per month. July is typically the wettest month, when rainfall can reach 253.0 mm. December is typically the driest time to visit Seoul when rainfall is around 27.0 mm.

Temperature in Seoul by month

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

When is the best time to book a flight to Seoul with Korean Air?

The best time to book a flight to Seoul with Korean Air is 35 days before departure. On average, fares are higher if you book 3 days before departure.

Best time to book a flight from Heathrow to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Heathrow with our price prediction graph.
Estimated return price

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See what others are saying about Korean Air

Korean Air
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Very Good
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Overview

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

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