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$244+ 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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Find cheap flights from Seoul to Heathrow with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in November or December, booked 90 days in advance, depart on a Saturday or Tuesday and return on a Saturday

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 May 11, 2026.

This FlightHub deal was found by Cheapflights users on 5/7. 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.
Thu 5/214:15 pm
ICN
-
LHR
1 stop34h 25m
China Eastern
Thu 5/289:20 pm
LHR
-
ICN
1 stop36h 05m
China Eastern
Deal found 5/7$561
This Trip.com deal was found by Cheapflights users on 5/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/102:30 pm
ICN
-
LHR
1 stop36h 10m
China Eastern
Wed 6/179:20 pm
LHR
-
ICN
1 stop15h 25m
China Eastern
Deal found 5/9$566
This Booking.com deal was found by Cheapflights users on 5/9. 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.
Thu 5/2112:55 pm
ICN
-
LHR
1 stop37h 45m
China Eastern
Wed 5/279:20 pm
LHR
-
ICN
1 stop36h 05m
China Eastern
Deal found 5/9$572
This Booking.com deal was found by Cheapflights users on 5/9. 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.
Sun 6/142:30 pm
ICN
-
LHR
1 stop36h 10m
China Eastern
Tue 6/169:20 pm
LHR
-
ICN
1 stop36h 05m
China Eastern
Deal found 5/9$573
This China Eastern deal was found by Cheapflights users on 5/9. 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.
Sun 6/74:20 pm
ICN
-
LHR
1 stop34h 20m
China Eastern
Sun 6/149:20 pm
LHR
-
ICN
1 stop34h 00m
China Eastern
Deal found 5/9$584
This FlightHub deal was found by Cheapflights users on 5/8. 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.
Tue 5/124:15 pm
ICN
-
LHR
1 stop34h 25m
China Eastern
Thu 6/119:20 pm
LHR
-
ICN
1 stop30h 35m
China Eastern
Deal found 5/8$588
This FlightHub deal was found by Cheapflights users on 5/7. 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 6/34:20 pm
ICN
-
LHR
1 stop34h 20m
China Eastern
Wed 6/109:20 pm
LHR
-
ICN
1 stop36h 05m
China Eastern
Deal found 5/7$591
This Booking.com deal was found by Cheapflights users on 5/8. 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.
Tue 6/96:25 pm
ICN
-
LHR
1 stop32h 15m
China Eastern
Mon 6/159:20 pm
LHR
-
ICN
1 stop30h 35m
China Eastern
Deal found 5/8$605
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 6/58:55 am
ICN
-
LHR
1 stop17h 45m
China Eastern
Thu 6/119:20 pm
LHR
-
ICN
1 stop33h 50m
China Eastern
Deal found 5/10$701
This Justfly.com deal was found by Cheapflights users on 5/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/81:05 pm
ICN
-
LHR
1 stop15h 20m
Multiple Airlines
Mon 6/2210:05 pm
LHR
-
ICN
1 stop32h 10m
Multiple Airlines
Deal found 5/7$711
This Lufthansa deal was found by Cheapflights users on 5/9. 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 12/11:05 pm
ICN
-
LHR
1 stop18h 15m
Lufthansa
Fri 12/47:40 am
LHR
-
ICN
1 stop18h 35m
Lufthansa
Deal found 5/9$715
This Air China deal was found by Cheapflights users on 5/7. 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.
Wed 11/42:25 pm
GMP
-
LHR
1 stop36h 25m
Air China
Sat 11/145:40 pm
LHR
-
GMP
1 stop34h 25m
Air China
Deal found 5/7$744

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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$561
(FlightHub)

One-way from

$244
(Kiwi.com)

Popular in

October

Cheapest in

November

Average price

$891

Good round-trip deal

$943 or less

Good one-way deal

$609 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 ($81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 11, 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

Wed 11/4

2:25 pm-5:50 pm

1 stop36h 25m

London Heathrow

Sat 11/14

8:25 pm-1:05 pm

1 stop31h 40m

$789

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 10/5

11:35 pm-9:40 pm

1 stop30h 05m

London Heathrow

Mon 10/26

10:35 am-7:00 pm

2 stops23h 25m

$835

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 6/2

11:45 pm-2:05 pm

1 stop22h 20m

London Heathrow

Wed 6/17

7:25 pm-10:30 am

1 stop31h 05m

$907

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 10/5

9:50 pm-8:40 pm

1 stop30h 50m

London Heathrow

Mon 10/26

7:30 am-12:25 pm

1 stop19h 55m

$930

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 6/25

2:25 pm-5:40 pm

1 stop35h 15m

London Heathrow

Fri 7/17

8:25 pm-1:05 pm

1 stop32h 40m

$1,032

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 6/3

2:25 pm-5:40 pm

1 stop35h 15m

London Heathrow

Sun 6/7

10:40 pm-1:05 pm

1 stop30h 25m

$1,032

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 5/21

11:00 am-6:30 am

2 stops27h 30m

London Heathrow

Thu 5/28

8:50 pm-7:10 am

2 stops26h 20m

$1,106

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sat 7/18

2:25 pm-5:40 pm

1 stop35h 15m

London Heathrow

Sat 7/25

10:40 pm-1:05 pm

1 stop30h 25m

$1,106

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Sun 6/14

11:45 pm-2:05 pm

1 stop22h 20m

London Heathrow

Sun 6/21

3:05 pm-10:25 pm

2 stops23h 20m

$1,111
Quickest round-trip

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 5/21

7:50 am-2:20 pm

Nonstop14h 30m

London Heathrow

Sun 5/31

4:35 pm-1:20 pm

Nonstop12h 45m

$1,158

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Showing 1-10 of 34 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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars
GotogatePrice 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

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 81 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 $424). Flying from Seoul to London Heathrow Airport in August is currently the most expensive (average of $609). 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 May 11, 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 May 11, 2026.

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

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

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 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 Monday 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 May 11, 2026.
See what other customers who have flown with Korean Air,Asiana Airlines, andAir 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
1,217 reviews

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.7

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
1,217 reviews
Korean Air
8.4
Very good
1,217 reviews

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.7

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
8.1
Very good
532 reviews
Korean Air
8.4
Very good
1,217 reviews

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.7

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
7.3
Good
149 reviews
Korean Air
8.4
Very good
1,217 reviews

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.7

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
7,988 reviews
Korean Air
8.4
Very good
1,217 reviews

Entertainment

8.2

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.7

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 22h 20m. 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 $754. You may be able to fly from Seoul to London Heathrow Airport for 36% 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 Asiana Airlines (83%), Virgin Atlantic (81%) or Korean Air (72%) 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 $942, our data shows the cheapest flight currently is $577. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay $591 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 $424). Flying from Seoul to London Heathrow Airport in August is currently the most expensive (average of $609). 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
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Dorking
Eastbourne

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 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$566Average$872FlexibilityNo cancel feeOn-time76%
Air ChinaCheapest$600Average$799FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$754Average$1,134FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$852Average$1,216FlexibilityNo cancel feeOn-time81%

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