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$315+ Cheap flights from Seoul (SEL) to Heathrow (LHR)

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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in November or January, booked 53 days in advance, depart on a Friday or Tuesday and return on a Wednesday

Cheap flight deals from Seoul to Heathrow

Cheapest flights from Seoul to Heathrow
Explore the most affordable flight options available from Seoul to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 4, 2026.

This FlightHub deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:30 pm -
1 stop36h 35m
Sat 9/59:00 pm -
1 stop31h 25m
Deal found 8/2$689
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:25 pm -
1 stop36h 25m
Mon 11/165:40 pm -
1 stop34h 25m
Deal found 8/4$708
This FlightHub deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:50 pm -
1 stop29h 50m
Tue 8/259:20 pm -
1 stop29h 40m
Deal found 8/1$712
This China Eastern deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:50 pm -
1 stop29h 50m
Tue 8/259:20 pm -
1 stop29h 40m
Deal found 8/1$734
This China Eastern deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:50 pm -
1 stop29h 50m
Mon 8/109:20 pm -
1 stop29h 40m
Deal found 7/31$741
This FlightHub deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:50 pm -
1 stop29h 50m
Tue 8/259:20 pm -
1 stop29h 40m
Deal found 8/1$742
This FlightHub deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/231:30 pm -
1 stop37h 25m
Sat 1/29:30 pm -
1 stop29h 55m
Deal found 8/2$747
This Shenzhen Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:30 pm -
2 stops37h 20m
Mon 9/710:05 pm -
2 stops31h 20m
Deal found 7/30$751
This Scandinavian Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3111:45 pm -
1 stop18h 35m
Fri 1/157:30 pm -
1 stop14h 30m
Deal found 8/1$752
This Scandinavian Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:45 pm -
1 stop25h 15m
Wed 11/1810:35 am -
2 stops23h 25m
Deal found 7/30$753
This Scandinavian Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:45 pm -
1 stop18h 35m
Tue 11/1710:35 am -
2 stops23h 25m
Deal found 8/3$754
This Shenzhen Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:30 pm -
2 stops61h 30m
Wed 9/910:05 pm -
2 stops31h 20m
Deal found 7/30$755

Find flight deals from Seoul to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Heathrow (LHR). 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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$689
(FlightHub)

One-way from

$315
(Mytrip)

Popular in

October

Cheapest in

November

Average price

$982

Good round-trip deal

$897 or less

Good one-way deal

$715 or less
Provider with most accurate pricing for Seoul (SEL)-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-London Heathrow flights.
Search Deals
From Seoul (SEL) to London Heathrow
Search Deals
One-way flight from Seoul (SEL) to London Heathrow
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to London Heathrow.
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul 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 2,558,603 searches. Data last updated August 4, 2026.
Use the filters below to find and compare flights from Seoul to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sat 8/15

8:50 pm-6:40 pm

1 stop29h 50m

London Heathrow

Tue 8/25

9:20 pm-11:00 am

1 stop29h 40m

$734

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 10/5

6:20 pm-12:45 pm

1 stop26h 25m

London Heathrow

Mon 10/26

8:55 pm-10:45 am

1 stop28h 50m

$808

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 8/23

8:55 am-6:40 pm

1 stop17h 45m

London Heathrow

Sat 8/29

9:20 pm-8:45 pm

1 stop15h 25m

$837

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 1/17

1:30 pm-7:25 am

2 stops26h 55m

London Heathrow

Tue 1/26

9:30 am-11:15 am

2 stops16h 45m

$860

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sat 8/15

3:50 pm-6:40 pm

2 stops58h 50m

London Heathrow

Tue 8/25

9:20 pm-2:50 pm

2 stops33h 30m

$1,048

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 8/25

11:40 am-10:10 pm

2 stops18h 30m

London Heathrow

Sat 8/29

6:55 am-9:55 am

1 stop19h 00m

$1,059
Quickest round-trip

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 8/17

12:25 pm-6:50 pm

Nonstop14h 25m

London Heathrow

Tue 8/25

1:25 pm-10:05 am

Nonstop12h 40m

$1,092

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sat 8/15

12:25 pm-6:50 pm

Nonstop14h 25m

London Heathrow

Tue 8/25

1:25 pm-10:05 am

Nonstop12h 40m

$1,127

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 9/11

12:25 pm-6:50 pm

Nonstop14h 25m

London Heathrow

Sat 9/19

1:25 pm-10:05 am

Nonstop12h 40m

$1,193

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 9/3

11:00 am-7:10 pm

2 stops40h 10m

London Heathrow

Tue 9/8

8:50 pm-6:35 am

2 stops49h 45m

$1,196

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/2

Showing 1-10 of 37 resultsSorted by cheapest first
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Compare providers for flights from Seoul to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to Heathrow in August.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seoul-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seoul to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Seoul with our price prediction graph.
Estimated round-trip 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 Seoul to London Heathrow Airport

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

Currently, November is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of $680). Flying from Seoul to London Heathrow Airport in October is currently the most expensive (average of $1,236). 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 SEL to LHR?

Find hourly flight availability from Seoul 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 August 4, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul to London Heathrow Airport as you normally would.

Weekly flight availability from Seoul to London Heathrow Airport

Explore weekly flight availability from Seoul 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 August 4, 2026.

The most flights from SEL to LHR are scheduled on a Monday (5 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Seoul to London Heathrow Airport?

Airfare is below average for this route at the moment.
Seoul to London Heathrow Airport flights typically cost between $890 and $1,276 in August.
The cheapest round-trip price found within the last 5 days was $689 on China Southern (Aug 28-Sep 5).

What’s the top layover airport for flights from Seoul to London Heathrow Airport?

Share of 1-stop round-trip flights from Seoul to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Shanghai (PVG) – chosen by Cheapflights users on 50% of 1-stop itineraries from Seoul to London Heathrow Airport on Cheapflights.

What’s the cheapest layover airport for flights from Seoul to London Heathrow Airport?

Average round-trip fare for 1-stop flights from Seoul to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Beijing (PKX) is the most affordable 1-stop option, with an average round-trip price of $2,180.

What’s the fastest layover option from Seoul to London Heathrow Airport?

Shortest average travel time for 1-stop one-way flights from Seoul to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Beijing (PKX) have the shortest average one-way travel time for 1-stop routes: 16h 15m.

Which airport typically offers the quickest layover for flights from Seoul to London Heathrow Airport?

Average layover duration for 1-stop one-way flights from Seoul to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Shanghai (PVG) offer the fastest connection on this route, with an average layover time of 2h 28m.

How far ahead should I book a flight from Seoul to London Heathrow Airport?

The best time to book flights from Seoul to London Heathrow Airport is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 August 4, 2026.
See what other customers who have flown with Asiana Airlines,Air China, andLufthansa from Seoul to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Asiana Airlines
8.1
Very good
553 reviews

Boarding

8.3

Comfort

8.0

Food

8.0

Entertainment

7.6

Overall

8.1

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

ICN - PEK

Food was better and a smaller business class made the experience more personal.
Asiana Airlines
8.1
Very good
553 reviews
Asiana Airlines
8.1
Very good
553 reviews

Boarding

8.3

Comfort

8.0

Food

8.0

Entertainment

7.6

Overall

8.1

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

ICN - PEK

Food was better and a smaller business class made the experience more personal.
Air China
7.4
Good
159 reviews
Asiana Airlines
8.1
Very good
553 reviews

Boarding

8.3

Comfort

8.0

Food

8.0

Entertainment

7.6

Overall

8.1

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

ICN - PEK

Food was better and a smaller business class made the experience more personal.
Lufthansa
6.8
Okay
8,177 reviews
Asiana Airlines
8.1
Very good
553 reviews

Boarding

8.3

Comfort

8.0

Food

8.0

Entertainment

7.6

Overall

8.1

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Apr 2026

ICN - PEK

Food was better and a smaller business class made the experience more personal.

Related info for your journey

Find useful and relevant information for your journey from Seoul to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seoul to London Heathrow Airport?

    Departing from Seoul to London Heathrow Airport will take you 26h 25m. The distance from Seoul to London Heathrow Airport is about 5503 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Seoul to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Seoul to London Heathrow Airport round-trip from $566. Other airlines that can offer you cheap pricing are Air China, from $600, and Lufthansa, from $715. You may be able to fly from Seoul to London Heathrow Airport for 35% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Seoul to London Heathrow Airport are Virgin Atlantic ($179), Air China ($187), and Asiana Airlines ($339).

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

    Consider Virgin Atlantic (83%), Asiana Airlines (82%) or Korean Air (69%) when booking your flight. These represent the most reliable airlines when flying from Seoul to London Heathrow Airport.

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

    While on average a flight from Seoul to London Heathrow Airport is generally $916, our data shows the cheapest flight currently is $508. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay $496 for that flight.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of $680). Flying from Seoul to London Heathrow Airport in October is currently the most expensive (average of $1,236). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Northampton
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seoul to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Heathrow flights

Top 3 airlines flying from Seoul to Heathrow

Discover the top 3 airlines that operate flights from Seoul to Heathrow. 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 2,558,603 searches. Data last updated August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$566Average$834FlexibilityNo cancel feeOn-time76%
Air ChinaCheapest$600Average$754FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$715Average$968FlexibilityNo cancel feeOn-time76%

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