Cheap flights from Incheon Intl Airport to London Heathrow Airport from £121

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — LHR
7 Jan — 14 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 8 December 2025.

Tue 23/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Thu 1/121:35LHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 7/12£409
Mon 22/1208:55ICN - LHR
1 stop17h 35mChina Eastern
Sat 31/121:00LHR - ICN
2 stops29h 00mChina Eastern
Deal found 7/12£409
Wed 24/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Mon 29/1221:00LHR - ICN
2 stops38h 35mMultiple Airlines
Deal found 7/12£410
Fri 19/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Mon 29/1221:00LHR - ICN
2 stops38h 35mMultiple Airlines
Deal found 7/12£411
Wed 24/1214:55ICN - LHR
1 stop37h 45mAir China
Sat 3/121:35LHR - ICN
1 stop30h 20mAir China
Deal found 7/12£412
Mon 22/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Mon 29/1221:00LHR - ICN
2 stops38h 35mMultiple Airlines
Deal found 7/12£412
Mon 22/1216:20ICN - LHR
1 stop34h 10mMultiple Airlines
Thu 29/121:30LHR - ICN
1 stop15h 45mMultiple Airlines
Deal found 7/12£414
Tue 23/1216:15ICN - LHR
1 stop35h 20mChina Southern
Thu 29/122:00LHR - ICN
1 stop32h 15mChina Southern
Deal found 7/12£419
Sun 21/1208:55ICN - LHR
1 stop17h 35mChina Eastern
Wed 31/1221:00LHR - ICN
1 stop31h 30mChina Eastern
Deal found 7/12£420
Mon 29/1212:55ICN - LHR
1 stop37h 35mChina Eastern
Sun 18/121:00LHR - ICN
1 stop29h 55mChina Eastern
Deal found 6/12£421
Sun 21/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Sat 3/121:35LHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 7/12£423
Mon 22/1208:55ICN - LHR
1 stop17h 35mChina Eastern
Sun 4/121:00LHR - ICN
1 stop29h 55mChina Eastern
Deal found 7/12£424

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 8 December 2025.

Round-trip from

£405

One-way from

£121

Popular in

October

Cheapest in

March

Average price

£593

Good round-trip deal

£487 or less

Good one-way deal

£330 or less
Air China
  • Air China
  • 31/1-7/2
  • 2 total stops
  • 46h 00m total
  • Incheon to London
China Eastern
  • China Eastern
  • 15/12
  • 1 total stop
  • 17h 35m total
  • Incheon to London
Highest demand for flights based on searches. 10% potential increase in price (£60 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£19 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 8 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

Mon 2/2

17:50-06:40

1 stop21h 50m

London Heathrow

Mon 9/2

13:55-10:45

1 stop35h 50m

£472

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 20/1

17:50-06:40

1 stop21h 50m

London Heathrow

Thu 22/1

20:55-21:55

1 stop16h 00m

£481

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 2/2

23:45-16:25

2 stops25h 40m

London Heathrow

Mon 9/2

21:05-19:00

2 stops36h 55m

£484

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 26/1

23:45-16:25

2 stops25h 40m

London Heathrow

Mon 9/2

21:05-19:00

2 stops36h 55m

£484

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 2/6

23:45-09:35

2 stops41h 50m

London Heathrow

Fri 5/6

06:40-18:15

2 stops27h 35m

£496

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 2/3

23:45-18:30

1 stop27h 45m

London Heathrow

Wed 11/3

19:50-19:00

2 stops38h 10m

£500

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 26/1

23:45-16:25

2 stops25h 40m

London Heathrow

Tue 3/2

17:00-19:00

1 stop17h 00m

£501

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/3

23:45-16:25

2 stops25h 40m

London Heathrow

Thu 19/3

10:35-19:00

2 stops23h 25m

£503

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 25/2

23:45-14:35

2 stops23h 50m

London Heathrow

Thu 5/3

10:35-19:00

2 stops23h 25m

£504

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/2

13:05-22:20

1 stop18h 15m

London Heathrow

Thu 5/3

07:40-11:15

1 stop18h 35m

£505

Flights are sorted by cheapest return flights first.

Deals found on 7/12

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 5 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 £360). Flying from Incheon Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £565). 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 8 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.

How much does it cost for a return flight from Incheon Intl Airport 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 8 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.

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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!!

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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!!

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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!!

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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!!

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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?

    Etihad Airways and Scandinavian Airlines can get you from Incheon Intl Airport to London Heathrow Airport in just under 21h 50m. Your travel time can differ by up to 3h 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 £356 on this airline. Additional options worth looking into are Air China and Asiana Airlines, starting at £443 and £487 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 Air China (£136), Etihad Airways (£246), and Asiana Airlines (£256).

  • 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 (61%), Korean Air (55%) and Asiana Airlines (46%).

  • 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 £508, our data shows the cheapest flight currently is £256. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay £352 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 £360). Flying from Incheon Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £565). 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
Northampton
Hounslow
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Watford
Hayes
Crawley
Winchester
Swindon
Deal
Bedford
Romford
Chichester

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 8 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£356Average£691FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£443Average£579FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£487Average£594FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£727Average£826FlexibilityNo 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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