Cheap flights from Incheon Intl Airport to London Heathrow Airport from £125

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 24/12. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — LHR
16 Jan — 23 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Incheon Intl to London Heathrow are usually found in March or November, booked 80 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Incheon Intl to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Incheon Intl to Heathrow
Explore the most affordable flight options available from Incheon Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 December 2025.

Wed 24/1212:55ICN - LHR
1 stop37h 35mMultiple Airlines
Mon 29/1221:00LHR - ICN
2 stops38h 35mMultiple Airlines
Deal found 15/12£407
Thu 18/1216:10ICN - LHR
1 stop34h 20mMultiple Airlines
Sun 4/120:25LHR - ICN
1 stop35h 10mMultiple Airlines
Deal found 15/12£410
Tue 23/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Wed 31/1217:40LHR - ICN
1 stop33h 00mMultiple Airlines
Deal found 15/12£417
Sat 27/1212:55ICN - LHR
1 stop37h 35mMultiple Airlines
Sat 3/121:35LHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 15/12£418
Tue 23/1210:55ICN - LHR
1 stop40h 40mChina Southern
Thu 8/121:30LHR - ICN
1 stop15h 45mChina Southern
Deal found 15/12£422
Tue 23/1216:15ICN - LHR
1 stop35h 20mChina Southern
Wed 14/121:30LHR - ICN
1 stop15h 45mChina Southern
Deal found 16/12£426
Tue 23/1212:55ICN - LHR
1 stop37h 35mChina Eastern
Sun 8/321:00LHR - ICN
2 stops29h 00mChina Eastern
Deal found 14/12£427
Wed 17/1216:10ICN - LHR
1 stop34h 20mChina Eastern
Wed 4/321:00LHR - ICN
2 stops29h 00mChina Eastern
Deal found 14/12£428
Mon 22/1216:20ICN - LHR
1 stop34h 10mChina Eastern
Thu 1/121:00LHR - ICN
1 stop29h 55mChina Eastern
Deal found 16/12£430
Tue 16/1216:15ICN - LHR
1 stop35h 20mChina Southern
Wed 7/121:30LHR - ICN
1 stop15h 45mChina Southern
Deal found 15/12£452
Sun 28/1212:55ICN - LHR
1 stop37h 35mChina Eastern
Tue 17/321:00LHR - ICN
1 stop33h 20mChina Eastern
Deal found 14/12£455

Find flight deals from Incheon Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) 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 17 December 2025.

Round-trip from

£404

One-way from

£125

Popular in

October

Cheapest in

March

Average price

£589

Good round-trip deal

£485 or less

Good one-way deal

£374 or less
China Southern
  • China Southern
  • 20/1-23/1
  • 2 total stops
  • 33h 20m total
  • Incheon to London
China Eastern
  • China Eastern
  • 24/12
  • 1 total stop
  • 37h 35m total
  • Incheon to London
Highest demand for flights based on searches. 10% potential increase in price (£59 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Incheon Intl to London Heathrow.
Price to beat on a one-way flight from Incheon Intl to London Heathrow.

Cheapflights Fare Finder

 
Customise your flight search to find flights from Incheon Intl 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 858,174 searches. Data last updated 17 December 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to London Heathrow Airport that are best for you.

Fly from

Incheon Intl

Fly to

Heathrow

Route

Depart

Return

Price

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 27/2

23:45-16:00

1 stop25h 15m

London Heathrow

Tue 3/3

10:35-19:00

2 stops23h 25m

£498

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 4/2

23:45-14:35

2 stops23h 50m

London Heathrow

Mon 9/2

21:05-19:00

2 stops36h 55m

£504

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 7/5

11:00-16:35

1 stop37h 35m

London Heathrow

Tue 26/5

11:00-22:30

1 stop27h 30m

£511

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 31/12

13:05-20:50

1 stop16h 45m

London Heathrow

Sat 10/1

07:40-11:15

1 stop18h 35m

£530

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 21/5

23:45-18:30

1 stop26h 45m

London Heathrow

Sun 31/5

10:35-18:15

2 stops23h 40m

£533

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 9/2

23:45-16:25

2 stops25h 40m

London Heathrow

Thu 19/2

09:55-19:00

2 stops24h 05m

£537

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 20/1

13:05-08:05

2 stops28h 00m

London Heathrow

Tue 3/2

08:30-10:50

1 stop17h 20m

£551

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 3/3

13:05-08:05

2 stops28h 00m

London Heathrow

Mon 9/3

07:40-10:50

2 stops18h 10m

£559

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 23/1

23:45-16:00

1 stop25h 15m

London Heathrow

Wed 18/2

19:50-19:00

2 stops38h 10m

£560

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 29/1

13:05-08:05

2 stops28h 00m

London Heathrow

Thu 5/2

08:30-11:15

2 stops17h 45m

£568

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 22 results
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Best time to book a flight from Incheon Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Incheon Intl with our price prediction graph.
Estimated return 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 Incheon Intl Airport to London Heathrow Airport

How far ahead should I book a flight from Incheon Intl Airport to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Incheon Intl to Heathrow. Price data was last updated on 12 December 2025.

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from Incheon Intl Airport to London Heathrow Airport. 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 Incheon Intl Airport to London Heathrow Airport?

Currently, March is the cheapest month in which you can book a flight from Incheon Intl Airport to London Heathrow Airport (average of £358). Flying from Incheon Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £563). 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 ICN to LHR?

Find hourly flight availability from Incheon Intl 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 17 December 2025.

When flying from Incheon Intl Airport to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 33% versus a flight at midday.

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 17 December 2025.
Read through reviews of airlines operating flights from Incheon Intl Airport to London Heathrow Airport, such as Korean Air, Asiana Airlines, andChina Eastern. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Comfort

8.3

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!!

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Comfort

8.3

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!!

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Comfort

8.3

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!!

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Comfort

8.3

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!!

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

Comfort

8.3

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 Incheon Intl 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 Incheon Intl Airport to London Heathrow Airport?

    Scandinavian Airlines, Malaysia Airlines, and Lufthansa can get you from Incheon Intl Airport to London Heathrow Airport in just under 16h 45m. Your travel time can differ by up to 20h 50m. Airlines will cover a distance of 5503 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Incheon Intl Airport to London Heathrow Airport round-trip?

    Our cheapest airline available from Incheon Intl Airport to London Heathrow Airport is China Eastern. Our recent data shows that you can find tickets from as low as £354 on this airline. Additional options worth looking into are Air China and Asiana Airlines, starting at £441 and £485 round-trip. China Eastern is currently priced 45% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Incheon Intl Airport to London Heathrow Airport one-way?

    The cheapet airlines for a one-way flight from Incheon Intl Airport to London Heathrow Airport are China Southern (£120), Air China (£135), and Etihad Airways (£245).

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

    The top 3 most reliable airlines when flying from Incheon Intl Airport to London Heathrow Airport are Virgin Atlantic (67%), Korean Air (67%) and Asiana Airlines (48%).

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

    While on average a flight from Incheon Intl Airport to London Heathrow Airport is generally £485, our data shows the cheapest flight currently is £254. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay £373 for that flight.

  • Can I find deals for flights from Incheon Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Incheon Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Incheon Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Incheon Intl to Heathrow.

  • Can I find deals for business class flights from Incheon Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Incheon Intl 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 Incheon Intl Airport to London Heathrow Airport?

    Currently, March is the cheapest month in which you can book a flight from Incheon Intl Airport to London Heathrow Airport (average of £358). Flying from Incheon Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £563). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Hounslow
Northampton
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Hayes
Watford
Crawley
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Winchester
Bedford
Romford
Chichester
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Incheon Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Incheon Intl to Heathrow

Discover the top 4 airlines that operate flights from Incheon Intl 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 858,174 searches. Data last updated 17 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£354Average£688FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£441Average£576FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£485Average£552FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£723Average£822FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Incheon Intl to Heathrow?

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Incheon Intl to Heathrow.

Can Cheapflights find flights from Incheon Intl to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Incheon Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Incheon Intl to Heathrow become cheaper?

Yes! Start tracking prices for Incheon Intl to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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