HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$338+ Cheap flights from Heathrow (LHR) to Seoul (SEL)

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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEL
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Heathrow to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London Heathrow to Seoul are usually found in November or January, booked 77 days in advance, depart on a Wednesday or Sunday and return on a Saturday

Find flight deals from Heathrow to Seoul

Cheapest flights from Heathrow to Seoul
Explore the most affordable flight options available from Heathrow to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Gotogate deal was found by Cheapflights users on 11/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/18:25 pmLHR - GMP
1 stop31h 40mAir China
Mon 12/82:25 pmGMP - LHR
1 stop34h 30mAir China
Deal found 11/3$497
This Mytrip deal was found by Cheapflights users on 11/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:35 pmLHR - ICN
1 stop30h 20mAir China
Sun 11/231:10 pmICN - LHR
1 stop35h 45mAir China
Deal found 11/2$505
This China Southern deal was found by Cheapflights users on 11/2. 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 China Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:30 pmLHR - GMP
1 stop29h 55mChina Southern
Wed 12/101:30 pmGMP - LHR
1 stop37h 25mChina Southern
Deal found 11/2$511
This China Southern deal was found by Cheapflights users on 11/2. 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 China Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/179:30 pmLHR - ICN
1 stop15h 45mChina Southern
Sat 11/299:25 amICN - LHR
1 stop18h 10mChina Southern
Deal found 11/2$511
This oojo deal was found by Cheapflights users on 11/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/139:00 pmLHR - ICN
1 stop14h 45mChina Eastern
Mon 11/2412:15 pmICN - LHR
2 stops38h 15mChina Eastern
Deal found 11/3$522
This Priceline deal was found by Cheapflights users on 11/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:25 pmLHR - GMP
1 stop31h 40mAir China
Tue 12/92:25 pmGMP - LHR
1 stop34h 30mAir China
Deal found 11/2$525
This Air China deal was found by Cheapflights users on 11/2. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/229:35 pmLHR - ICN
1 stop30h 20mAir China
Thu 11/271:10 pmICN - LHR
1 stop35h 45mAir China
Deal found 11/2$528
This oojo deal was found by Cheapflights users on 11/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/179:00 pmLHR - ICN
2 stops39h 00mHainan Airlines
Sat 12/610:10 pmICN - LHR
1 stop28h 45mHainan Airlines
Deal found 11/1$531
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:00 pmLHR - ICN
1 stop29h 55mChina Eastern
Sun 11/308:55 amICN - LHR
1 stop17h 35mChina Eastern
Deal found 11/2$536
This Expedia deal was found by Cheapflights users on 11/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/139:30 pmLHR - GMP
1 stop29h 55mMultiple Airlines
Tue 11/182:25 pmGMP - LHR
1 stop34h 30mMultiple Airlines
Deal found 11/3$540
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/139:30 pmLHR - ICN
1 stop15h 45mMultiple Airlines
Tue 11/181:10 pmICN - LHR
1 stop35h 45mMultiple Airlines
Deal found 11/3$542
This Booking.com deal was found by Cheapflights users on 11/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:00 pmLHR - ICN
1 stop14h 45mChina Eastern
Mon 11/178:50 pmICN - LHR
2 stops29h 40mChina Eastern
Deal found 11/2$546

Cheap flight deals from Heathrow to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Seoul (SEL). 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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$502
(Mytrip)

One-way from

$338
(FlightHub)

Popular in

July

Cheapest in

November

Average price

$594

Good round-trip deal

$1,418 or less

Good one-way deal

$841 or less
Provider with most accurate pricing for London Heathrow-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Seoul (SEL) flights.
Search Deals
From London Heathrow to Seoul (SEL)
Search Deals
One-way flight from London Heathrow to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from London Heathrow to Seoul (SEL).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Seoul 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 November 3, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Seoul that are best for you.

Fly from

Heathrow

Fly to

Seoul

Route

Depart

Return

Price

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Mon 3/9

8:25 pm-1:05 pm

1 stop31h 40m

Seoul Gimpo Intl

Fri 3/13

2:25 pm-3:55 pm

1 stop34h 30m

$621

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 3/9

9:05 pm-7:00 pm

2 stops36h 55m

Incheon Intl

Fri 3/13

11:45 pm-9:20 am

1 stop18h 35m

$646

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Wed 12/3

5:30 pm-7:00 pm

2 stops40h 30m

Incheon Intl

Wed 12/10

11:45 pm-6:30 pm

1 stop27h 45m

$675

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Tue 12/2

5:00 pm-7:00 pm

1 stop17h 00m

Incheon Intl

Wed 12/10

11:45 pm-4:25 pm

2 stops25h 40m

$675

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Tue 4/28

3:35 pm-6:15 pm

2 stops18h 40m

Incheon Intl

Wed 5/6

11:45 pm-4:25 pm

2 stops24h 40m

$744

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 4/27

9:05 pm-6:15 pm

2 stops37h 10m

Incheon Intl

Wed 5/6

11:45 pm-4:25 pm

2 stops24h 40m

$748

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Wed 12/3

7:40 am-10:50 am

2 stops18h 10m

Incheon Intl

Tue 12/9

1:05 pm-10:20 pm

1 stop18h 15m

$749

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Tue 12/16

10:35 am-7:00 pm

2 stops23h 25m

Incheon Intl

Mon 12/29

11:45 pm-4:00 pm

1 stop25h 15m

$789

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Thu 11/27

8:35 am-10:05 pm

1 stop28h 30m

Seoul Gimpo Intl

Tue 12/9

7:40 pm-3:15 pm

1 stop28h 35m

$1,080

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Sat 11/15

9:35 pm-2:10 pm

2 stops31h 35m

Seoul Gimpo Intl

Sun 11/23

2:25 pm-5:50 pm

1 stop36h 25m

$1,124

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 41 results
1
2
3
...
5

Compare providers for flights from Heathrow to Seoul

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 Heathrow to Seoul in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
Trip.comPrice Accuracy2 starsTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*1 star

*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 London Heathrow Airport-Seoul flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Seoul flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Seoul flights, Cheapflights users trust eDreams the most. eDreams 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 London Heathrow Airport-Seoul 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 Heathrow to Seoul

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

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Seoul. Price data was last updated on October 31, 2025.

Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Seoul. 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 Seoul?

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Seoul (average of $448). Flying from London Heathrow Airport to Seoul in July is currently the most expensive (average of $842). 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 SEL?

Find hourly flight availability from Heathrow to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

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

Weekly flight availability from London Heathrow Airport to Seoul

Explore weekly flight availability from Heathrow to Seoul. 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 November 3, 2025.

The most flights from LHR to SEL are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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

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

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

Beijing (PEK) – chosen by Cheapflights users on 36% of 1-stop itineraries from London Heathrow Airport to Seoul on Cheapflights.

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

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

Beijing (PEK) is the most affordable 1-stop option, with an average round-trip price of $544.

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

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

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for 1-stop routes: 14h 25m.

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

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

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average layover time of 1h 28m.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated November 3, 2025.
Peruse reviews from past customers who have flown with Korean Air, Asiana Airlines, and Air China from London Heathrow Airport to Seoul to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,160 reviews

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,160 reviews
Korean Air
8.4
Very good
1,160 reviews

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
484 reviews
Korean Air
8.4
Very good
1,160 reviews

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air China
7.1
Good
122 reviews
Korean Air
8.4
Very good
1,160 reviews

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Lufthansa
6.8
Okay
7,547 reviews
Korean Air
8.4
Very good
1,160 reviews

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Seoul. 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 London Heathrow Airport to Seoul?

    Airlines like Air China, Scandinavian Airlines, and Japan Airlines fly from London Heathrow Airport to Seoul in about 28h 30m. The time it takes to get you to your destination can typically vary by up to 9h 40m. London Heathrow Airport and Seoul are separated by a distance of 5506 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from London Heathrow Airport to Seoul is Air China. Our recent data shows that you can find tickets from as low as $574 on this airline. Additional options worth looking into are Lufthansa and Korean Air, starting at $620 and $821 round-trip. Air China is priced at 33% 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 Seoul one-way?

    The cheapest airline one-way is China Southern, with whom users have recently found tickets for as low as $343. However, be on the lookout for offers from Air China and Tianjin Airlines, as they are both options that can get you from London Heathrow Airport to Seoul for a low price.

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

    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 Seoul on time: Korean Air (92%), Virgin Atlantic (92%), Asiana Airlines (83%).

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

    On average you can expect to pay $1,248 for a flight from London Heathrow Airport to Seoul. The cheapest flight overall is $644 while the most popular route, (London Heathrow - Incheon Intl) is currently priced at $450.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Seoul (average of $448). Flying from London Heathrow Airport to Seoul in July is currently the most expensive (average of $842). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Seoul

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

Top 4 airlines flying from Heathrow to Seoul

Discover the top 4 airlines that operate flights from Heathrow to Seoul. 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$574Average$805FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$620Average$984FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$821Average$1,182FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$990Average$1,373FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.