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$233+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in December or March, booked 67 days in advance, depart on a Saturday or Monday and return on a Wednesday

Find 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 November 3, 2025.

This Shenzhen Airlines 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:55 pmICN - LHR
1 stop37h 15mShenzhen Airlines
Mon 1/129:10 pmLHR - ICN
1 stop31h 45mShenzhen Airlines
Deal found 11/3$595
This Air China 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:10 pmICN - LHR
1 stop35h 45mAir China
Thu 12/119:35 pmLHR - ICN
1 stop30h 20mAir China
Deal found 11/3$601
This Air China 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/162:25 pmGMP - LHR
1 stop36h 25mAir China
Sun 11/238:25 pmLHR - GMP
1 stop31h 40mAir China
Deal found 11/1$608
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/211:10 pmICN - LHR
1 stop35h 45mMultiple Airlines
Fri 11/289:00 pmLHR - ICN
1 stop14h 45mMultiple Airlines
Deal found 11/3$611
This Air China 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/142:25 pmGMP - LHR
1 stop36h 25mAir China
Tue 12/235:40 pmLHR - GMP
1 stop34h 25mAir China
Deal found 11/3$618
This Etihad Airways 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:50 pmICN - LHR
1 stop33h 20mEtihad Airways
Mon 1/127:20 pmLHR - ICN
1 stop30h 25mEtihad Airways
Deal found 11/3$634
This Shenzhen Airlines 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:15 pmICN - LHR
2 stops37h 55mShenzhen Airlines
Mon 1/59:10 pmLHR - ICN
2 stops31h 05mShenzhen Airlines
Deal found 11/3$638
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.
Fri 12/262:40 pmICN - LHR
1 stop34h 15mMultiple Airlines
Sun 1/49:10 pmLHR - ICN
1 stop31h 45mMultiple Airlines
Deal found 11/3$639
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:45 pmICN - LHR
1 stop25h 15mScandinavian Airlines
Wed 1/147:50 pmLHR - ICN
2 stops38h 10mScandinavian Airlines
Deal found 11/3$651
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:05 pmICN - LHR
1 stop17h 35mKLM
Wed 12/105:05 pmLHR - ICN
1 stop14h 50mKLM
Deal found 11/3$659
This Shenzhen Airlines 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/142:15 pmICN - LHR
2 stops37h 55mShenzhen Airlines
Wed 1/79:10 pmLHR - ICN
2 stops31h 05mShenzhen Airlines
Deal found 11/3$666
This Shenzhen Airlines 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 Shenzhen Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:45 pmICN - LHR
1 stop35h 25mShenzhen Airlines
Fri 11/289:10 pmLHR - ICN
2 stops31h 05mShenzhen Airlines
Deal found 11/2$676

Cheap 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 November 3, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$540
(CheapOair)

One-way from

$233
(Kiwi.com)

Popular in

October

Cheapest in

December

Average price

$803

Good round-trip deal

$679 or less

Good one-way deal

$526 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. 8% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 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 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 November 3, 2025.
Use the filters below to find and compare flights from Seoul to London Heathrow Airport that are best for you.

Fly from

Seoul

Fly to

Heathrow

Route

Depart

Return

Price

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 11/16

2:25 pm-5:50 pm

1 stop36h 25m

London Heathrow

Sun 11/23

8:25 pm-1:05 pm

1 stop31h 40m

$608

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 12/14

2:25 pm-5:50 pm

1 stop36h 25m

London Heathrow

Tue 12/23

5:40 pm-1:05 pm

1 stop34h 25m

$618

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 2/16

11:45 pm-9:20 am

1 stop18h 35m

London Heathrow

Mon 2/23

7:50 pm-7:00 pm

2 stops38h 10m

$650

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 12/21

2:15 pm-7:10 pm

2 stops37h 55m

London Heathrow

Wed 1/14

9:10 pm-1:15 pm

2 stops31h 05m

$666

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 12/4

11:05 pm-10:30 am

2 stops20h 25m

London Heathrow

Thu 12/11

3:45 pm-4:55 pm

1 stop16h 10m

$690

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 12/31

1:05 pm-8:05 am

2 stops28h 00m

London Heathrow

Fri 1/16

11:10 am-11:15 am

1 stop15h 05m

$696

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 12/26

2:25 pm-3:55 pm

1 stop34h 30m

London Heathrow

Sun 1/4

7:10 am-1:05 pm

2 stops20h 55m

$700

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 12/23

2:25 pm-3:55 pm

1 stop34h 30m

London Heathrow

Sat 1/3

5:40 pm-1:05 pm

1 stop34h 25m

$719

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 11/21

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Fri 11/28

9:10 pm-1:15 pm

2 stops31h 05m

$723

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 11/27

12:25 pm-6:05 pm

Nonstop14h 40m

London Heathrow

Wed 12/3

8:10 pm-5:50 pm

Nonstop12h 40m

$731

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 46 results
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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 November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Seoul-London Heathrow Airport flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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

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

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

The best time to book flights from Seoul to London Heathrow Airport is 67 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.

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 $471). Flying from Seoul to London Heathrow Airport in July is currently the most expensive (average of $750). 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 November 3, 2025.

It’s typically best to fly out from Seoul to London Heathrow Airport in the afternoon. Doing so could potentially save you 29% on the flight price compared to flying at noon, which is usually more expensive.

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 November 3, 2025.

The most flights from SEL to LHR 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 Seoul to London Heathrow Airport?

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 November 3, 2025.
See what other customers who have flown with Korean Air, Asiana Airlines, and Air China 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.
Korean Air
8.4
Very good
1,160 reviews

Comfort

8.3

Food

8.1

Entertainment

8.2

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,160 reviews
Korean Air
8.4
Very good
1,160 reviews

Comfort

8.3

Food

8.1

Entertainment

8.2

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very good
484 reviews
Korean Air
8.4
Very good
1,160 reviews

Comfort

8.3

Food

8.1

Entertainment

8.2

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air China
7.1
Good
122 reviews
Korean Air
8.4
Very good
1,160 reviews

Comfort

8.3

Food

8.1

Entertainment

8.2

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Lufthansa
6.8
Okay
7,547 reviews
Korean Air
8.4
Very good
1,160 reviews

Comfort

8.3

Food

8.1

Entertainment

8.2

Crew

8.7

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 18h 35m. 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 $600. Other airlines that can offer you cheap pricing are Asiana Airlines, from $629, and Lufthansa, from $754. You may be able to fly from Seoul to London Heathrow Airport for 34% 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 China Eastern ($320), Shenzhen Airlines ($322), and Air China ($324).

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

    Consider Virgin Atlantic (41%), Korean Air (32%) or Asiana Airlines (18%) 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 $1,148, our data shows the cheapest flight currently is $367. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay $519 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 $471). Flying from Seoul to London Heathrow Airport in July is currently the most expensive (average of $750). 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
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone

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 4 airlines flying from Seoul to Heathrow

Discover the top 4 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$600Average$730FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$629Average$890FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$754Average$1,132FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$847Average$1,103FlexibilityNo cancel feeOn-time81%

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