HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$360+ 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
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 Friday and return on a Saturday

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 September 15, 2025.

Round-trip from

$459
(FlightHub)

One-way from

$360
(FlightHub)

Popular in

July

Cheapest in

November

Average price

$906

Good round-trip deal

$1,306 or less

Good one-way deal

$795 or less
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 ($148 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 September 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

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 September 15, 2025.

This FlightHub deal was found by Cheapflights users on 9/15. 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 11/69:00 pmLHR - GMP
1 stop29h 00mChina Eastern
Mon 11/108:50 pmGMP - LHR
1 stop29h 40mChina Eastern
Deal found 9/15$459
This oojo deal was found by Cheapflights users on 9/14. 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.
Wed 10/298:25 pmLHR - GMP
1 stop31h 40mAir China
Wed 11/52:25 pmGMP - LHR
1 stop36h 25mAir China
Deal found 9/14$519
This Booking.com deal was found by Cheapflights users on 9/14. 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 11/109:30 pmLHR - GMP
1 stop29h 55mChina Southern
Wed 11/191:45 pmGMP - LHR
1 stop37h 10mChina Southern
Deal found 9/14$521
This Air China deal was found by Cheapflights users on 9/14. 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 10/210:00 pmLHR - ICN
1 stop30h 55mAir China
Mon 10/132:55 pmICN - LHR
1 stop37h 20mAir China
Deal found 9/14$541
This Trip.com deal was found by Cheapflights users on 9/14. 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.
Sun 11/29:30 pmLHR - GMP
1 stop29h 55mChina Southern
Sun 11/161:45 pmGMP - LHR
1 stop37h 10mChina Southern
Deal found 9/14$543
This oojo deal was found by Cheapflights users on 9/14. 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.
Wed 10/19:20 pmLHR - ICN
1 stop36h 05mChina Eastern
Mon 10/134:35 pmICN - LHR
2 stops34h 05mChina Eastern
Deal found 9/14$550
This oojo deal was found by Cheapflights users on 9/14. 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.
Sun 11/29:00 pmLHR - ICN
2 stops29h 00mChina Eastern
Sun 11/164:20 pmICN - LHR
1 stop34h 10mChina Eastern
Deal found 9/14$551
This oojo deal was found by Cheapflights users on 9/14. 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.
Tue 12/25:40 pmLHR - ICN
1 stop13h 55mAir China
Sat 12/2711:10 amICN - LHR
1 stop15h 40mAir China
Deal found 9/14$593
This Lufthansa deal was found by Cheapflights users on 9/13. 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 12/87:40 amLHR - ICN
2 stops18h 10mLufthansa
Fri 2/201:30 pmICN - LHR
1 stop16h 30mLufthansa
Deal found 9/13$614
This oojo deal was found by Cheapflights users on 9/15. 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.
Tue 12/25:40 pmLHR - GMP
1 stop34h 25mAir China
Sat 12/272:25 pmGMP - LHR
1 stop36h 25mAir China
Deal found 9/15$619
This Lufthansa deal was found by Cheapflights users on 9/14. 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.
Sat 12/611:10 amLHR - ICN
1 stop15h 05mLufthansa
Wed 1/141:05 pmICN - LHR
2 stops28h 00mLufthansa
Deal found 9/14$619
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Fri 10/39:20 pmLHR - ICN
1 stop15h 25mMultiple Airlines
Thu 10/96:25 pmICN - LHR
1 stop32h 15mMultiple Airlines
Deal found 9/15$622

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 September 15, 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

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Thu 2/26

11:10 am-11:15 am

1 stop15h 05m

Incheon Intl

Sun 3/8

1:05 pm-8:05 am

2 stops28h 00m

$620

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 3/9

7:50 pm-7:00 pm

2 stops38h 10m

Incheon Intl

Mon 3/23

11:45 pm-9:20 am

1 stop18h 35m

$665

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Fri 9/26

10:05 pm-1:40 pm

1 stop31h 35m

Incheon Intl

Thu 10/23

4:40 pm-8:00 pm

1 stop35h 20m

$684

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Wed 3/11

7:50 pm-7:00 pm

2 stops38h 10m

Incheon Intl

Wed 3/18

11:45 pm-2:35 pm

2 stops23h 50m

$695

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Wed 2/18

7:30 am-10:50 am

1 stop18h 20m

Incheon Intl

Sun 2/22

1:05 pm-8:05 am

2 stops28h 00m

$710

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Tue 12/16

7:40 am-11:15 am

1 stop18h 35m

Incheon Intl

Wed 12/24

1:05 pm-8:50 pm

1 stop16h 45m

$737

LondonSeoul

LHR - GMP

LHRGMP

London Heathrow

Fri 10/24

8:25 pm-1:05 pm

1 stop32h 40m

Seoul Gimpo Intl

Tue 11/4

2:25 pm-5:50 pm

1 stop36h 25m

$854

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 10/4

8:55 pm-10:05 pm

1 stop17h 10m

Incheon Intl

Wed 10/8

1:35 am-6:45 pm

1 stop25h 10m

$877

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Sat 12/20

5:30 pm-7:00 pm

2 stops40h 30m

Incheon Intl

Wed 12/31

11:45 pm-4:00 pm

1 stop25h 15m

$930

LondonIncheon

LHR - ICN

LHRICN

London Heathrow

Mon 12/15

7:50 pm-7:00 pm

2 stops38h 10m

Incheon Intl

Wed 12/24

11:45 pm-9:40 pm

1 stop30h 55m

$939

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 46 results
1
2
3
...
5

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 September 12, 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Seoul (average of $990). Flying from London Heathrow Airport to Seoul in December is currently the most expensive (average of $1,633). 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 September 15, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 42% on flights from London Heathrow Airport to Seoul by exploring options for tickets in the morning.

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 September 15, 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?

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 September 15, 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
1,139 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
7.2
Good
99 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
7,407 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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 Lufthansa, Scandinavian Airlines, and Shenzhen Airlines fly from London Heathrow Airport to Seoul in about 15h 05m. The time it takes to get you to your destination can typically vary by up to 23h 05m. London Heathrow Airport and Seoul are separated by a distance of 5503 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 $507 on this airline. Additional options worth looking into are Lufthansa and Asiana Airlines, starting at $579 and $990 round-trip. Air China is priced at 41% 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 $371. 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 (88%).

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

    On average you can expect to pay $1,215 for a flight from London Heathrow Airport to Seoul. The cheapest flight overall is $665 while the most popular route, (London Heathrow - Seoul Gimpo Intl) is currently priced at $543.

  • 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Seoul (average of $990). Flying from London Heathrow Airport to Seoul in December is currently the most expensive (average of $1,633). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$507Average$738FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$579Average$971FlexibilityNo cancel feeOn-time76%
Asiana AirlinesCheapest$990Average$1,373FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,000Average$1,200FlexibilityNo 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.