HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$182+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
Mar 11 — Mar 181
Wed 3/11
Wed 3/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seoul to Heathrow 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 Seoul to London Heathrow are usually found in November or December, booked 79 days in advance, depart on a Tuesday or Saturday and return on a Monday

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 February 9, 2026.

This FlightHub deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/96:25 pm
ICN
-
LHR
1 stop32h 05m
China Eastern
Mon 3/169:00 pm
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 2/6$470
This FlightHub deal was found by Cheapflights users on 2/8. 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.
Thu 6/44:45 pm
ICN
-
LHR
1 stop34h 15m
China Southern
Mon 6/810:10 pm
LHR
-
ICN
1 stop33h 15m
China Southern
Deal found 2/8$488
This China Eastern deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:10 pm
ICN
-
LHR
1 stop34h 20m
China Eastern
Mon 3/99:00 pm
LHR
-
ICN
1 stop31h 30m
China Eastern
Deal found 2/6$490
This China Eastern deal was found by Cheapflights users on 2/8. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:55 pm
ICN
-
LHR
1 stop37h 35m
China Eastern
Sun 3/159:00 pm
LHR
-
ICN
1 stop29h 55m
China Eastern
Deal found 2/8$491
This China Eastern deal was found by Cheapflights users on 2/6. 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 3/296:25 pm
ICN
-
LHR
1 stop32h 15m
China Eastern
Sat 4/189:20 pm
LHR
-
ICN
1 stop30h 35m
China Eastern
Deal found 2/6$505
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/39:25 am
ICN
-
LHR
1 stop18h 10m
China Southern
Sun 3/159:30 pm
LHR
-
ICN
1 stop15h 45m
China Southern
Deal found 2/8$508
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/214:45 pm
ICN
-
LHR
1 stop34h 15m
China Southern
Sun 5/3110:10 pm
LHR
-
ICN
1 stop31h 45m
China Southern
Deal found 2/9$518
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/21:25 pm
GMP
-
LHR
1 stop36h 40m
China Southern
Mon 6/159:00 pm
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 2/9$518
This Booking.com deal was found by Cheapflights users on 2/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:55 am
ICN
-
LHR
1 stop17h 35m
China Eastern
Fri 3/139:00 pm
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 2/7$541
This Mytrip deal was found by Cheapflights users on 2/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:15 pm
ICN
-
LHR
1 stop35h 20m
China Southern
Fri 3/139:30 pm
LHR
-
ICN
1 stop15h 45m
China Southern
Deal found 2/7$542
This China Eastern deal was found by Cheapflights users on 2/8. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:55 pm
ICN
-
LHR
1 stop37h 35m
China Eastern
Wed 3/189:00 pm
LHR
-
ICN
1 stop14h 45m
China Eastern
Deal found 2/8$548
This Jetabroad deal was found by Cheapflights users on 2/8. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/41:25 pm
GMP
-
LHR
1 stop36h 40m
China Southern
Mon 6/89:00 pm
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 2/8$549

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 February 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$470
(FlightHub)

One-way from

$182
(Mytrip)

Popular in

October

Cheapest in

November

Average price

$793

Good round-trip deal

$776 or less

Good one-way deal

$580 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. 7% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 9, 2026.
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

Fri 3/6

8:55 am-5:30 pm

1 stop17h 35m

London Heathrow

Tue 3/17

9:00 pm-8:45 pm

1 stop14h 45m

$491

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 3/5

12:55 pm-5:30 pm

1 stop37h 35m

London Heathrow

Sun 3/15

9:00 pm-11:55 am

1 stop29h 55m

$491

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

$518

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 6/4

1:25 pm-6:05 pm

1 stop36h 40m

London Heathrow

Mon 6/8

9:00 pm-12:25 pm

1 stop31h 25m

$549

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 3/3

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Wed 3/4

9:10 pm-3:45 pm

1 stop33h 35m

$566

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 4/14

4:20 pm-6:40 pm

1 stop34h 20m

London Heathrow

Sat 4/18

9:20 pm-3:10 pm

1 stop33h 50m

$604

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 3/11

8:55 am-5:30 pm

1 stop17h 35m

London Heathrow

Wed 3/11

9:00 pm-1:15 pm

3 stops31h 15m

$613

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 6/2

9:50 pm-5:05 pm

1 stop27h 15m

London Heathrow

Wed 6/17

7:30 am-11:20 am

1 stop19h 50m

$647

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 3/5

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Sat 3/21

9:10 pm-1:55 pm

1 stop31h 45m

$657

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 3/3

2:55 pm-7:10 pm

1 stop37h 15m

London Heathrow

Sat 3/21

9:10 pm-1:55 pm

1 stop31h 45m

$657

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 42 results
1
2
3
...
5

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 February.
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?

Use this chart to determine the optimal time to book a round-trip flight from Seoul to Heathrow. Price data was last updated on February 6, 2026.

The best time to book flights from Seoul to London Heathrow Airport is 79 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 $748). 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 February 9, 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 February 9, 2026.

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 February 9, 2026.
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
1,191 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Food

8.1

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
1,191 reviews
Korean Air
8.4
Very good
1,191 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Food

8.1

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
505 reviews
Korean Air
8.4
Very good
1,191 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Food

8.1

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
7.2
Good
138 reviews
Korean Air
8.4
Very good
1,191 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Food

8.1

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
7,775 reviews
Korean Air
8.4
Very good
1,191 reviews

Overall

8.4

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Food

8.1

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 17h 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 $767. You may be able to fly from Seoul to London Heathrow Airport for 33% 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 Korean Air (77%), Virgin Atlantic (59%) or Asiana Airlines (33%) 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 $1,451, our data shows the cheapest flight currently is $580. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay $486 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 $748). 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
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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 February 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$600Average$799FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$629Average$840FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$767Average$1,132FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$847Average$1,179FlexibilityNo cancel feeOn-time81%

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.