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 16/12. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — LHR
11 Jan — 18 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 12 December 2025.

Wed 17/1209:25ICN - LHR
1 stop18h 10mChina Southern
Wed 7/121:30LHR - ICN
1 stop15h 45mChina Southern
Deal found 10/12£404
Wed 24/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Wed 7/121:30LHR - ICN
1 stop15h 45mMultiple Airlines
Deal found 11/12£405
Tue 23/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Thu 1/121:35LHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 11/12£406
Wed 17/1216:20ICN - LHR
1 stop34h 10mMultiple Airlines
Thu 8/121:30LHR - ICN
1 stop15h 45mMultiple Airlines
Deal found 11/12£406
Tue 23/1216:20ICN - LHR
1 stop34h 10mMultiple Airlines
Wed 18/217:40LHR - ICN
1 stop34h 40mMultiple Airlines
Deal found 10/12£408
Tue 16/1212:55ICN - LHR
1 stop37h 35mMultiple Airlines
Tue 6/122:10LHR - ICN
1 stop29h 45mMultiple Airlines
Deal found 10/12£409
Tue 16/1214:50ICN - LHR
1 stop34h 05mAir China
Sat 3/121:35LHR - ICN
1 stop30h 20mAir China
Deal found 11/12£410
Mon 15/1218:25ICN - LHR
1 stop32h 05mMultiple Airlines
Wed 7/121:30LHR - ICN
1 stop15h 45mMultiple Airlines
Deal found 10/12£412
Tue 23/1208:55ICN - LHR
1 stop17h 35mMultiple Airlines
Sat 3/121:35LHR - ICN
1 stop30h 20mMultiple Airlines
Deal found 11/12£417
Fri 12/1214:55ICN - LHR
1 stop37h 45mAir China
Tue 16/1222:10LHR - ICN
1 stop29h 45mAir China
Deal found 11/12£418
Mon 22/1212:55ICN - LHR
1 stop37h 35mMultiple Airlines
Wed 31/1219:45LHR - ICN
1 stop39h 35mMultiple Airlines
Deal found 10/12£419
Wed 17/1209:25ICN - LHR
1 stop18h 10mMultiple Airlines
Sun 4/120:25LHR - ICN
1 stop30h 15mMultiple Airlines
Deal found 11/12£420

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 12 December 2025.

Round-trip from

£404

One-way from

£125

Popular in

October

Cheapest in

March

Average price

£591

Good round-trip deal

£485 or less

Good one-way deal

£329 or less
Hainan Airlines
  • Hainan Airlines
  • 22/12-5/1
  • 3 total stops
  • 72h 55m total
  • Incheon to London
China Eastern
  • China Eastern
  • 16/12
  • 1 total stop
  • 34h 10m total
  • Incheon to London
Highest demand for flights based on searches. 11% 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 12 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

Sat 7/3

09:25-18:35

1 stop18h 10m

London Heathrow

Sat 14/3

21:30-22:15

1 stop15h 45m

£429

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Thu 26/2

09:25-17:55

1 stop17h 30m

London Heathrow

Mon 2/3

19:35-15:15

1 stop34h 40m

£438

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Fri 27/2

23:45-18:30

2 stops27h 45m

London Heathrow

Thu 5/3

10:35-19:00

2 stops23h 25m

£480

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 3/2

12:25-18:05

Nonstop14h 40m

London Heathrow

Sat 14/2

20:10-17:50

Nonstop12h 40m

£499

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

£499

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 11/3

23:45-17:40

1 stop26h 55m

London Heathrow

Mon 16/3

19:50-19:00

2 stops38h 10m

£499

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Mon 26/1

23:45-16:00

1 stop25h 15m

London Heathrow

Mon 2/2

21:05-19:00

2 stops36h 55m

£502

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Wed 4/3

23:45-16:25

2 stops25h 40m

London Heathrow

Thu 12/3

10:35-19:00

2 stops23h 25m

£502

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 24/2

17:50-06:40

1 stop21h 50m

London Heathrow

Thu 5/3

08:50-21:55

1 stop28h 05m

£503

IncheonLondon

ICN - LHR

ICNLHR

Incheon Intl

Tue 30/12

13:25-09:35

1 stop29h 10m

London Heathrow

Sat 10/1

06:30-07:10

1 stop15h 40m

£506

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 24 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 £358). Flying from Incheon Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £562). 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 12 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 12 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.

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Overall

8.4

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!!

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Overall

8.4

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!!

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Overall

8.4

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!!

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Overall

8.4

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!!

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Overall

8.4

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?

    China Southern and Scandinavian Airlines can get you from Incheon Intl Airport to London Heathrow Airport in just under 18h 10m. Your travel time can differ by up to 9h 35m. 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 £355 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 Air China (£135), Etihad Airways (£245), and Asiana Airlines (£255).

  • 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 £506, our data shows the cheapest flight currently is £255. When looking at the most popular route, (Incheon Intl - London Heathrow), you can expect to pay £346 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 £562). 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£355Average£689FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£441Average£577FlexibilityNo cancel feeOn-time67%
Search Air China flights
Asiana AirlinesCheapest£485Average£592FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest£724Average£823FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

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

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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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