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$183+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in November or December, booked 83 days in advance, depart on a Tuesday or Monday 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 December 21, 2025.

This CheapOair deal was found by Cheapflights users on 12/20. 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.
Tue 12/232:50 pmICN - LHR
1 stop36h 45mMultiple Airlines
Sat 1/39:35 pmLHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 12/20$561
This Booking.com deal was found by Cheapflights users on 12/18. 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.
Mon 12/228:50 amICN - LHR
1 stop17h 30mLOT
Wed 12/316:20 pmLHR - ICN
1 stop27h 50mLOT
Deal found 12/18$717
This Lufthansa deal was found by Cheapflights users on 12/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:30 pmICN - LHR
1 stop16h 30mLufthansa
Mon 1/127:40 amLHR - ICN
2 stops18h 10mLufthansa
Deal found 12/21$734
This Lufthansa deal was found by Cheapflights users on 12/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:05 pmICN - LHR
2 stops28h 00mLufthansa
Sat 1/107:40 amLHR - ICN
1 stop18h 35mLufthansa
Deal found 12/21$747
This Lufthansa deal was found by Cheapflights users on 12/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:05 pmICN - LHR
1 stop18h 15mLufthansa
Wed 12/317:40 amLHR - ICN
2 stops18h 10mLufthansa
Deal found 12/20$750
This Finnair deal was found by Cheapflights users on 12/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:00 pmICN - LHR
1 stop30h 40mFinnair
Mon 1/56:10 pmLHR - ICN
1 stop33h 15mFinnair
Deal found 12/21$765
This Finnair deal was found by Cheapflights users on 12/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:00 pmICN - LHR
1 stop30h 40mFinnair
Fri 1/164:15 pmLHR - ICN
1 stop35h 10mFinnair
Deal found 12/21$768
This China Southern deal was found by Cheapflights users on 12/19. 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 12/232:50 pmICN - LHR
1 stop36h 45mChina Southern
Sat 1/39:30 pmLHR - ICN
1 stop15h 45mChina Southern
Deal found 12/19$769
This Finnair deal was found by Cheapflights users on 12/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:00 pmICN - LHR
1 stop30h 40mFinnair
Tue 12/304:15 pmLHR - ICN
1 stop35h 10mFinnair
Deal found 12/21$770
This KLM deal was found by Cheapflights users on 12/19. 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.
Sat 12/2711:05 pmICN - LHR
1 stop26h 00mKLM
Sun 1/48:25 pmLHR - ICN
1 stop35h 30mKLM
Deal found 12/19$782
This KLM deal was found by Cheapflights users on 12/20. 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.
Sun 12/2811:05 pmICN - LHR
1 stop26h 55mKLM
Sun 1/48:25 pmLHR - ICN
1 stop35h 30mKLM
Deal found 12/20$786
This Japan Airlines deal was found by Cheapflights users on 12/21. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:05 pmGMP - LHR
1 stop28h 05mJapan Airlines
Fri 1/167:30 amLHR - GMP
2 stops25h 50mJapan Airlines
Deal found 12/21$1,185

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 December 21, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$554
(Kiwi.com)

One-way from

$183
(Trip.com)

Popular in

October

Cheapest in

November

Average price

$743

Good round-trip deal

$670 or less

Good one-way deal

$477 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. 6% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 21, 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

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 1/26

11:45 pm-5:40 pm

1 stop26h 55m

London Heathrow

Wed 2/11

7:50 pm-7:00 pm

2 stops38h 10m

$667

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 2/3

5:50 pm-6:40 am

1 stop21h 50m

London Heathrow

Sat 2/14

1:55 pm-9:55 pm

1 stop23h 00m

$668

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 2/27

11:45 pm-6:30 pm

2 stops27h 45m

London Heathrow

Tue 3/3

7:30 pm-7:00 pm

1 stop14h 30m

$668

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 1/26

11:45 pm-6:30 pm

1 stop27h 45m

London Heathrow

Mon 2/9

9:05 pm-7:00 pm

2 stops36h 55m

$671

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 3/4

11:45 pm-4:25 pm

2 stops25h 40m

London Heathrow

Thu 3/12

10:35 am-7:00 pm

2 stops23h 25m

$671

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 3/4

11:45 pm-4:00 pm

1 stop25h 15m

London Heathrow

Mon 3/9

9:05 pm-7:00 pm

2 stops36h 55m

$671

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 1/18

2:15 pm-7:10 pm

2 stops37h 55m

London Heathrow

Sun 1/25

9:10 pm-1:15 pm

2 stops55h 05m

$684

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 2/9

11:45 pm-4:00 pm

1 stop25h 15m

London Heathrow

Thu 2/19

10:35 am-7:00 pm

2 stops23h 25m

$709

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 6/2

1:25 pm-6:05 pm

1 stop36h 40m

London Heathrow

Mon 6/15

9:00 pm-12:25 pm

1 stop31h 25m

$715

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 6/2

2:25 pm-8:25 pm

1 stop14h 00m

London Heathrow

Mon 6/15

10:40 pm-1:05 pm

1 stop30h 25m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 35 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 December.
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 December 19, 2025.

The best time to book flights from Seoul to London Heathrow Airport is 83 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, March is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of $480). Flying from Seoul to London Heathrow Airport in July is currently the most expensive (average of $754). 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 December 21, 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 December 21, 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?

How often are flights from Seoul to London delayed?

About 0% of weekly flights between Seoul and London have experienced delays in the past year, with the average delay time being 0 minutes.

What is the most punctual flight time for Seoul to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

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 December 21, 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
1,185 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Food

8.1

Entertainment

8.2

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
1,185 reviews
Korean Air
8.4
Very good
1,185 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Food

8.1

Entertainment

8.2

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
494 reviews
Korean Air
8.4
Very good
1,185 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Food

8.1

Entertainment

8.2

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
7.2
Good
131 reviews
Korean Air
8.4
Very good
1,185 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Food

8.1

Entertainment

8.2

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
7,640 reviews
Korean Air
8.4
Very good
1,185 reviews

Crew

8.7

Comfort

8.3

Boarding

8.5

Overall

8.4

Food

8.1

Entertainment

8.2

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 21h 50m. 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 $552. 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 39% 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 Air China ($187), Asiana Airlines ($339), and Qatar Airways ($423).

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

    Consider Virgin Atlantic (67%), Korean Air (67%) or Asiana Airlines (48%) 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 $579, our data shows the cheapest flight currently is $339. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay $499 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, March is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of $480). Flying from Seoul to London Heathrow Airport in July is currently the most expensive (average of $754). 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
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$552Average$764FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$629Average$850FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$754Average$1,132FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$847Average$1,103FlexibilityNo cancel feeOn-time81%

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