Find flights
When to book
FAQs

Cheap flights from Seoul Gimpo Intl Airport to London Heathrow Airport from £150

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
GMP — LHR
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Gimpo Intl to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Gimpo Intl to Heathrow
Explore the most affordable flight options available from Gimpo Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 November 2025.

Fri 12/1220:50GMP - LHR
1 stop29h 40mChina Eastern
Fri 16/121:00LHR - GMP
1 stop29h 00mChina Eastern
Deal found 26/11£430
Fri 19/1214:25GMP - LHR
1 stop36h 25mAir China
Mon 5/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 25/11£434
Fri 5/1214:25GMP - LHR
1 stop36h 25mAir China
Thu 7/522:40LHR - GMP
1 stop30h 25mAir China
Deal found 26/11£436
Tue 23/1214:25GMP - LHR
1 stop36h 25mAir China
Mon 5/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 24/11£448
Thu 27/1114:25GMP - LHR
1 stop36h 25mMultiple Airlines
Tue 2/1221:30LHR - GMP
1 stop29h 55mMultiple Airlines
Deal found 24/11£451
Wed 26/1114:25GMP - LHR
1 stop34h 30mMultiple Airlines
Sun 30/1121:00LHR - GMP
1 stop29h 00mMultiple Airlines
Deal found 25/11£453
Thu 27/1114:25GMP - LHR
1 stop36h 25mMultiple Airlines
Mon 1/1221:00LHR - GMP
1 stop29h 00mMultiple Airlines
Deal found 26/11£458
Mon 22/1214:25GMP - LHR
1 stop36h 25mAir China
Wed 31/1220:25LHR - GMP
1 stop31h 40mAir China
Deal found 26/11£464
Fri 19/1214:25GMP - LHR
1 stop34h 30mAir China
Sun 11/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 25/11£470
Wed 24/1214:25GMP - LHR
1 stop34h 30mAir China
Wed 31/1217:40LHR - GMP
1 stop34h 25mAir China
Deal found 24/11£473
Tue 23/1214:25GMP - LHR
1 stop34h 30mAir China
Fri 16/120:25LHR - GMP
1 stop31h 40mAir China
Deal found 25/11£473

Cheap flight deals from Gimpo Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Gimpo Intl (GMP) 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 27 November 2025.

Round-trip from

£408

One-way from

£150

Popular in

October

Cheapest in

March

Average price

£519
China Southern
  • China Southern
  • 25/2-5/3
  • 2 total stops
  • 67h 20m total
  • Seoul to London
Search Deals
China Eastern
  • China Eastern
  • 17/3
  • 1 total stop
  • 29h 40m total
  • Seoul to London
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gimpo 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 27 November 2025.
Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to London Heathrow Airport that are best for you.

Fly from

Gimpo Intl

Fly to

Heathrow

Route

Depart

Return

Price

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 19/1

14:25-17:50

1 stop36h 25m

London Heathrow

Tue 27/1

17:40-13:05

1 stop34h 25m

£411

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 2/3

14:25-17:50

1 stop36h 25m

London Heathrow

Wed 11/3

20:25-13:05

1 stop31h 40m

£416

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 16/3

14:25-17:50

1 stop36h 25m

London Heathrow

Fri 20/3

17:40-13:05

1 stop34h 25m

£452

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 13/1

14:25-17:50

1 stop36h 25m

London Heathrow

Wed 21/1

20:25-13:05

1 stop31h 40m

£471

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 16/12

14:25-15:55

1 stop34h 30m

London Heathrow

Sat 3/1

20:25-13:05

1 stop31h 40m

£476

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sun 22/3

14:25-15:55

1 stop34h 30m

London Heathrow

Thu 16/4

20:25-13:05

1 stop32h 40m

£476

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 23/12

14:25-17:50

1 stop36h 25m

London Heathrow

Mon 5/1

20:25-13:05

1 stop31h 40m

£476

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 23/12

14:25-15:55

1 stop34h 30m

London Heathrow

Fri 16/1

20:25-13:05

1 stop31h 40m

£504

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 11/2

13:30-17:55

1 stop37h 25m

London Heathrow

Tue 17/3

21:30-12:25

1 stop29h 55m

£511

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Thu 25/12

14:25-17:50

1 stop36h 25m

London Heathrow

Wed 31/12

20:25-13:05

1 stop31h 40m

£520

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 20 results
1
2

Best time to book a flight from Gimpo Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Gimpo 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 Seoul Gimpo Intl Airport to London Heathrow Airport

How often are flights from Seoul to London delayed?

About 0% of weekly flights between Seoul and London have experienced delays in the past year, with the average delay time being 0 minutes.

What is the most punctual flight time for Seoul to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Seoul to London flights?

Over the past year, Korean Air have had the lowest number of delays on this route, with no flights being classified as delayed.

Related info for your journey

Find useful and relevant information for your journey from Gimpo 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 Seoul Gimpo Intl Airport to London Heathrow Airport?

    Airlines like Air China fly from Seoul Gimpo Intl Airport to London Heathrow Airport in about 36h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from Seoul Gimpo Intl Airport to London Heathrow Airport is about 5506 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Gimpo 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.

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
Slough
Croydon
Hounslow
Northampton
Gatwick
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Brentford
Winchester
Swindon
Crawley
Romford
Chichester
Bedford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Gimpo Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Heathrow flights
Incheon Intl to Gatwick flights
Incheon Intl to Stansted flights
Incheon Intl to London City flights
Gimpo Intl to London City flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Gimpo Intl to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Gimpo Intl to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Gimpo Intl to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Gimpo Intl to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Gimpo Intl to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.