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$300+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — LHR
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to London Heathrow are usually found in March or December, booked 83 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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 July 31, 2025.

Round-trip from

$682
(Lufthansa)

One-way from

$316
(Etihad Airways)

Popular in

October

Cheapest in

March

Average price

$996

Good round-trip deal

$751 or less

Good one-way deal

$717 or less
From Seoul (SEL) to London Heathrow
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One-way flight from Seoul (SEL) to London Heathrow
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Highest demand for flights based on searches. 6% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Seoul (SEL) to London Heathrow.
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Price to beat on a one-way flight from Seoul (SEL) to London Heathrow.
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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 July 31, 2025.

This Lufthansa deal was found by Cheapflights users on 7/29. 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.
Thu 12/41:05 pmICN - LHR
1 stop18h 15mLufthansa
Sun 12/148:45 amLHR - ICN
1 stop17h 30mLufthansa
Deal found 7/29$684
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Mon 8/186:25 pmICN - LHR
1 stop32h 15mMultiple Airlines
Tue 8/2610:40 pmLHR - ICN
1 stop15h 05mMultiple Airlines
Deal found 7/29$685
This Booking.com deal was found by Cheapflights users on 7/31. 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 9/1511:45 pmICN - LHR
1 stop24h 15mScandinavian Airlines
Fri 9/265:00 pmLHR - ICN
1 stop17h 15mScandinavian Airlines
Deal found 7/31$687
This Booking.com deal was found by Cheapflights users on 7/29. 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 8/128:55 amICN - LHR
1 stop17h 45mChina Eastern
Tue 8/199:20 pmLHR - ICN
1 stop15h 25mChina Eastern
Deal found 7/29$688
This China Southern deal was found by Cheapflights users on 7/31. 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.
Fri 8/229:25 amICN - LHR
1 stop16h 40mChina Southern
Fri 8/2910:10 pmLHR - ICN
1 stop33h 15mChina Southern
Deal found 7/31$694
This China Southern deal was found by Cheapflights users on 7/31. 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 12/231:45 pmGMP - LHR
1 stop37h 10mChina Southern
Sat 1/39:30 pmLHR - GMP
1 stop29h 55mChina Southern
Deal found 7/31$694
This SmartFares deal was found by Cheapflights users on 7/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:25 pmGMP - LHR
1 stop14h 05mAir China
Wed 9/1710:40 pmLHR - GMP
1 stop30h 25mAir China
Deal found 7/30$714
This OneTravel deal was found by Cheapflights users on 7/30. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/231:30 pmGMP - LHR
1 stop36h 35mMultiple Airlines
Sat 8/3010:40 pmLHR - GMP
1 stop30h 25mMultiple Airlines
Deal found 7/30$722
This EVA Air deal was found by Cheapflights users on 7/31. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:50 pmGMP - LHR
2 stops37h 30mEVA Air
Mon 11/109:20 pmLHR - GMP
2 stops36h 55mEVA Air
Deal found 7/31$945
This Gotogate deal was found by Cheapflights users on 7/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:20 pmGMP - LHR
1 stop28h 20mJapan Airlines
Sun 10/129:20 amLHR - GMP
1 stop24h 40mJapan Airlines
Deal found 7/30$1,205

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 July 31, 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

Sat 1/17

1:05 pm-8:50 pm

1 stop16h 45m

London Heathrow

Sat 1/24

7:40 am-11:15 am

1 stop18h 35m

$682

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 9/15

11:45 pm-4:00 pm

1 stop24h 15m

London Heathrow

Fri 9/26

5:00 pm-6:15 pm

1 stop17h 15m

$687

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 8/22

9:25 am-6:05 pm

1 stop16h 40m

London Heathrow

Fri 8/29

10:10 pm-3:25 pm

1 stop33h 15m

$694

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 12/23

1:45 pm-5:55 pm

1 stop37h 10m

London Heathrow

Sat 1/3

9:30 pm-12:25 pm

1 stop29h 55m

$694

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 10/6

1:35 am-3:15 pm

1 stop21h 40m

London Heathrow

Tue 10/21

10:40 pm-9:45 pm

1 stop15h 05m

$695

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 9/11

2:25 pm-8:30 pm

1 stop14h 05m

London Heathrow

Wed 9/17

10:40 pm-1:05 pm

1 stop30h 25m

$714

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sat 8/23

1:30 pm-6:05 pm

1 stop36h 35m

London Heathrow

Sat 8/30

10:40 pm-1:05 pm

1 stop30h 25m

$722

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 10/24

1:50 pm-7:20 pm

2 stops37h 30m

London Heathrow

Mon 11/10

9:20 pm-7:15 pm

2 stops36h 55m

$945

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 9/25

7:20 pm-3:40 pm

1 stop28h 20m

London Heathrow

Sun 10/12

9:20 am-6:00 pm

1 stop24h 40m

$1,205

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 9/15

1:35 am-6:45 pm

1 stop25h 10m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 27 results
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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 July 25, 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, November is the cheapest month in which you can book a flight from Seoul to London Heathrow Airport (average of $661). Flying from Seoul to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 July 31, 2025.

It’s typically best to fly out from Seoul to London Heathrow Airport in the afternoon. Doing so could potentially save you 9% 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 July 31, 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 July 31, 2025.
See what other customers who have flown with EVA Air, Japan Airlines, and Emirates 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.
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,536 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Emirates
8.1
Very good
3,300 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Southern
7.6
Good
104 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
SWISS
7.5
Good
1,686 reviews
EVA Air
8.4
Very good
1,220 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

  • 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 $682. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from $687, and China Southern, from $694. You may be able to fly from Seoul to London Heathrow Airport for 25% 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 Etihad Airways ($316), China Southern ($318), and China Eastern ($324).

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

    Consider Korean Air (83%), Virgin Atlantic (77%) or Asiana Airlines (65%) 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 $3,450, our data shows the cheapest flight currently is $710. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay $668 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 $661). Flying from Seoul to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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
Hayes
Thornton Heath
Harrow
Canterbury
Dover
Stratford-upon-Avon
Orpington
Watford
Northampton
Gatwick
Borehamwood
Dartford
Broadway
Aylesbury
Chelmsford
Folkestone
Southend-on-Sea
Chichester
Swindon

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 5 airlines flying from Seoul to Heathrow

Discover the top 5 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$550Average$741FlexibilityNo cancel feeOn-time67%
Etihad AirwaysCheapest$672Average$806FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$682Average$948FlexibilityNo cancel feeOn-time76%
Asiana AirlinesCheapest$822Average$975FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$847Average$1,216FlexibilityNo cancel feeOn-time81%

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