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$251 Cheap Flights from Seoul (ICN) to London (LHR)

View $251 flight on Thu, Oct 22, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Heathrow Airport (LHR)

Cheap Flights from Seoul to London (ICN-LHR)

Prices were available within the past 7 days and start at $251 for one-way flights and $583 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LOT-Polish Airlines
Tue, Dec 1 - Tue, Dec 8
ICN
Seoul
LHR
London
$583 Roundtrip, found 5 days ago
$583
Roundtrip
found 5 days ago
Select LOT-Polish Airlines flight, departing Tue, Dec 1 from Seoul to London, returning Tue, Dec 8, priced at $583 found 5 days ago
Scandinavian Airlines
Thu, Dec 17 - Wed, Jan 6
ICN
Seoul
LHR
London
$633 Roundtrip, found 1 hour ago
$633
Roundtrip
found 1 hour ago
Select Scandinavian Airlines flight, departing Thu, Dec 17 from Seoul to London, returning Wed, Jan 6, priced at $633 found 1 hour ago
Xiamen Airlines
Sat, Oct 10 - Sun, Oct 11
ICN
Seoul
LHR
London
$687 Roundtrip, found 3 days ago
$687
Roundtrip
found 3 days ago
Select Xiamen Airlines flight, departing Sat, Oct 10 from Seoul to London, returning Sun, Oct 11, priced at $687 found 3 days ago
China Eastern Airlines
Thu, Nov 5 - Wed, Nov 11
ICN
Seoul
LHR
London
$702 Roundtrip, found 4 days ago
$702
Roundtrip
found 4 days ago
Select China Eastern Airlines flight, departing Thu, Nov 5 from Seoul to London, returning Wed, Nov 11, priced at $702 found 4 days ago
Lufthansa
Wed, Dec 2 - Sun, Dec 6
ICN
Seoul
LHR
London
$705 Roundtrip, found 5 days ago
$705
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Wed, Dec 2 from Seoul to London, returning Sun, Dec 6, priced at $705 found 5 days ago
Air China
Tue, Oct 13 - Sun, Oct 25
ICN
Seoul
LHR
London
$722 Roundtrip, found 1 day ago
$722
Roundtrip
found 1 day ago
Select Air China flight, departing Tue, Oct 13 from Seoul to London, returning Sun, Oct 25, priced at $722 found 1 day ago
Finnair
Mon, Jan 18 - Tue, Feb 2
ICN
Seoul
LHR
London
$735 Roundtrip, found 3 days ago
$735
Roundtrip
found 3 days ago
Select Finnair flight, departing Mon, Jan 18 from Seoul to London, returning Tue, Feb 2, priced at $735 found 3 days ago
Etihad Airways
Tue, Sep 29 - Sat, Oct 31
ICN
Seoul
LHR
London
$760 Roundtrip, found 4 days ago
$760
Roundtrip
found 4 days ago
Select Etihad Airways flight, departing Tue, Sep 29 from Seoul to London, returning Sat, Oct 31, priced at $760 found 4 days ago
Royal Brunei Airlines
Tue, Feb 2 - Sun, Feb 7
ICN
Seoul
LHR
London
$808 Roundtrip, found 5 days ago
$808
Roundtrip
found 5 days ago
Select Royal Brunei Airlines flight, departing Tue, Feb 2 from Seoul to London, returning Sun, Feb 7, priced at $808 found 5 days ago
Vietnam Airlines
Mon, Oct 19 - Thu, Nov 19
ICN
Seoul
LHR
London
$859 Roundtrip, found 5 days ago
$859
Roundtrip
found 5 days ago
Select Vietnam Airlines flight, departing Mon, Oct 19 from Seoul to London, returning Thu, Nov 19, priced at $859 found 5 days ago

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gatwick LGW. Cheapest option available. Average driving time to city center is 52 minutes. Flights from $871
LGW
Gatwick
Cheapest
Average driving time to city center52 min
Flights from $871

What you need to know for your flight from Incheon Intl. to Heathrow

Seoul (ICN) to London (LHR) at a glance

Travel from Seoul (ICN) to London (LHR) with a range of airlines offering diverse options on this international long-haul route. Discover various choices among full-service carriers to find the ideal itinerary that suits your budget, schedule, and travel plans while you explore the iconic attractions and neighborhoods of London. Get essential information about flights from Incheon International Airport (ICN) to Heathrow Airport (LHR) as you plan your journey.

  • Fastest flight duration: around 14h 30m non-stop
  • Route distance: roughly 5,500 miles (8,850 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $220–$875, depending on seasonality and how far ahead you book

Flights from Incheon International Airport (ICN) to Heathrow Airport (LHR)

Based on the latest traveler bookings, here are the top airlines favored for flights from Seoul to London, particularly for non-stop and one-stop options. Popular layover choices include Pudong International Airport (PVG) with a roughly 3-hour layover, Capital International Airport (PEK) at about 2 hours and 15 minutes, and Abu Dhabi International Airport (AUH) with an approximate 1 hour and 45 minutes layover. This variety allows you to balance price, total travel time, and cabin class to create your ideal itinerary.

  • Asiana Airlines: This full-service airline provides both non-stop and one-stop options, with one-way ticket prices typically falling between $460 and $2440. It represents around 33% of the departures along this route, with a standard non-stop flight duration of 14 hours and 30 minutes.
  • Korean Air: Another full-service airline, Korean Air offers non-stop flights, with one-way fares generally ranging from $450 to $1600. It constitutes about 17% of the departures for this route, featuring a total flight duration of 14 hours and 30 minutes.
  • Lufthansa: A full-service carrier providing one-stop flights, Lufthansa's one-way fares typically range from $395 to $1620. It makes up approximately 8% of the departures on this route, with an in-flight duration of 15 hours and a complete travel time of around 17 hours and 45 minutes, including layovers.
  • China Eastern Airlines: This full-service airline offers one-stop services, with one-way fares generally between $220 and $1250. China Eastern accounts for about 7% of the departures on this route, with an in-flight time of 15 hours and an overall travel duration of roughly 17 hours and 45 minutes, including layovers.
  • Virgin Atlantic: A full-service carrier that provides non-stop flights, Virgin Atlantic has one-way fares typically between $410 and $1980. It represents approximately 7% of the departures on this route, with a total journey time of 14 hours and 30 minutes.

Travelers flying from Seoul to London have the option to upgrade to business class with Asiana Airlines, which offers top-notch service on this route.

Best time to fly from Seoul (ICN) to London (LHR)

The most popular months for travelers flying from Seoul to London are March, April, and July, when peak temperatures in London reach up to 64.9°F in July. If you prefer quieter travel, consider February, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 41.7°F. For better deals, December usually offers the lowest average one-way fare around $612. Flight availability peaks in July, September, October, and December, with approximately 9 flights per week, making it easier to find convenient departure times. April has the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: December usually offers good deals with average one-way fare around $612, roughly 26% cheaper than the yearly average.
  • Another budget-friendly time to fly: February typically offers an average one-way fare of around $646.
  • Most flight options: July, September, October, and December have the highest number of flights from Seoul to London, with approximately 9 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January40.5°F (4.7°C)Average8$988
February41.7°F (5.4°C)Slightly Low8$646
March45.0°F (7.2°C)Slightly High8$818
April49.5°F (9.7°C)Slightly High7$988
May55.0°F (12.8°C)Average8$818
June61.0°F (16.1°C)Average8$785
July64.9°F (18.3°C)Slightly High9$930
August64.6°F (18.1°C)Average8$808
September60.4°F (15.8°C)Average9$714
October54.5°F (12.5°C)Slightly Low9$993
November47.1°F (8.4°C)Slightly Low8$876
December42.8°F (6.0°C)Average9$612

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Seoul (ICN) to London (LHR)

  • Seoul to Farnborough (ICN-FAB): Farnborough Airport (FAB) is located approximately 19 miles from Heathrow Airport (LHR).
  • Seoul to London (GMP-LHR): Gimpo International Airport (GMP) is around 21 miles distant from Incheon International Airport (ICN).
  • Seoul to London (ICN-LGW): Gatwick Airport (LGW) lies about 25 miles from Heathrow Airport (LHR).

How to find the best prices for flights from Seoul (ICN) to London (LHR)

Getting some of the best deals on flights from Seoul to London is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Departures in the morning (5 am-12 pm) tend to be less expensive and are also the most popular times to fly. Additionally, flying on Wednesday often results in lower prices, although Monday remains the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Heathrow Airport from Incheon International Airport

London welcomes travelers from Seoul with a range of transport options based on price, convenience, and proximity. London city center is approximately a 35-minute drive (covering about 19 miles) from Heathrow Airport, depending on traffic. Here's how to reach London efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in London, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Heathrow Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Heathrow Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Heathrow Airport, both Heathrow Terminals 2 & 3 Underground Station (a metro station) and Heathrow Central Bus Station (a bus station) are conveniently located about 0.2 miles away on foot, while Heathrow Terminals 2 & 3 Station (a train station) is just 0.3 miles away on foot, providing easy access to various transportation options for travelers.

Frequently asked questions

How much does a flight from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) cost?
You can find cheap one-way flights from $251 and cheap return flights from $583 Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) with Expedia. One-way flights typically cost between $409 and $2981, and return flights often range between $834 and $4972. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
April is the cheapest month to fly from Seoul (ICN) to London (LHR), with average return fares around $771. This price is about 24% lower than the average, as April typically has less travel demand compared to the summer months. Other cheap months to fly from Seoul to London include March and May.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
3 airlines operate nonstop service from ICN to LHR:

  • Korean Air operates around 7 direct flights from ICN to LHR every week
  • Asiana Airlines operates around 7 direct flights from ICN to LHR every week
  • Virgin Atlantic operates around 7 direct flights from ICN to LHR every week

What is the cheapest airline that flies from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
Shenzhen Airlines is one of the cheapest airlines offering connecting flights from Seoul (ICN) to London (LHR), with round-trip tickets starting from around $710. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
To find a cheap flight from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
The best airline to fly with from Seoul (ICN) to London (LHR) will differ from traveler to traveler. If you like to fly early, Asiana Airlines offers early morning flights. If price is the most important factor, Virgin Atlantic typically offers the lowest fares. Asiana Airlines also offers the most daily flights from ICN to LHR, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
When traveling from Seoul (ICN) to London (LHR), April and May are the best months to fly. Return flights during these months average around $771, providing a good balance of price and travel experience. April is particularly attractive as it allows you to enjoy the spring bloom in London while avoiding the summer rush.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
On average, there are around 3 nonstop flights per day from Incheon Intl. (ICN) to Heathrow (LHR). For more options, look at flights that include layovers.
What is the earliest flight from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
The earliest flight from Seoul (Incheon Intl.) to London (Heathrow) typically departs at around 12:05 AM, operated by Ethiopian Airlines. This early flight allows you to arrive in London with a full day ahead of you. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from Seoul (ICN) to London (LHR) are in the late evening, from 9pm to midnight. About 25% of passengers prefer this time window. Many major carriers, including Emirates, Finnair, and KLM, offer flights during this window. This timing works well because it lets you enjoy a full day in Seoul before your flight and arrive in London the next morning.
How long does it take to fly from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
A nonstop flight from ICN to LHR typically takes around 14 hours 30 minutes, covering approximately 5,507 miles. Connecting flights on this route usually add 6 hours 30 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
Business class is available on flights from ICN to LHR. Airlines that offer business class service on this route include:

  • LOT Polish Airlines
  • Cathay Pacific
  • Singapore Airlines
  • Lufthansa
  • Malaysia Airlines
  • Turkish Airlines
  • Etihad Airways
  • SAS
  • Korean Air
  • Emirates

First class cabins are available on:

  • Emirates
  • Korean Air
  • Swiss International Air Lines

How much is a business class flight from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
A direct, return business class ticket from Seoul (ICN) to London (LHR) typically costs between $9,518 - $14,904. A non-stop, one-way business class flight is usually around $2,538 - $2,779 per adult in economy/coach class. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Incheon Intl. (ICN)?
From Incheon Intl. (ICN), you can fly into Heathrow (LHR), London Intl. (YXU) and Gatwick (LGW) in London. Some flights may connect through major hubs like Franz Josef Strauss Intl. (MUC), Pudong Intl. (PVG), Taoyuan Intl. (TPE) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) flight and hotel package?
Securing a Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) London Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow)?
If you booked your Seoul (ICN-Incheon Intl.) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Incheon Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air China, Air India, Asiana Airlines, Cathay Pacific, China Eastern Airlines, China Southern Airlines, EVA Airways, Emirates, Ethiopian Airlines, Etihad Airways, Finnair, Korean Air, LOT-Polish Airlines, Lufthansa, Malaysia Airlines, Qatar Airways, Scandinavian Airlines, Thai Airways International, Turkish Airlines
Roundtrip price
$582
Distance
5505 mi
Average flight time
6 hours 26 mins

Book with confidence

Seoul to London Flights

The cheapest times to fly from Seoul to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seoul to London are during the month of December. You can find some of the cheapest flights from Seoul to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to London

Sunday is one of the best days to book for cheap flights from Seoul to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seoul to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seoul to London in 2026. You can also book with separate airlines for your outbound and return journeys, from $251 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seoul to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seoul to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seoul to London Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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