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Cheap flights from Seoul Gimpo Intl Airport to London Heathrow Airport from £139

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
GMP — LHR
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 13 February 2026.

Tue 2/613:25
GMP
-
LHR
1 stop36h 40m
China Southern
Mon 15/621:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 10/2£380
Fri 5/613:25
GMP
-
LHR
1 stop36h 40m
China Southern
Wed 10/621:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 11/2£385
Sun 29/313:25
GMP
-
LHR
1 stop36h 40m
China Southern
Sun 5/421:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 12/2£417
Tue 12/513:25
GMP
-
LHR
1 stop36h 40m
China Southern
Tue 19/521:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 10/2£427
Fri 12/613:25
GMP
-
LHR
1 stop36h 40m
China Southern
Fri 19/621:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 11/2£428
Sat 6/613:25
GMP
-
LHR
1 stop36h 40m
China Southern
Sat 20/621:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 10/2£428
Mon 9/320:50
GMP
-
LHR
1 stop29h 40m
Multiple Airlines
Sun 15/321:00
LHR
-
GMP
1 stop29h 00m
Multiple Airlines
Deal found 10/2£430
Wed 1/413:25
GMP
-
LHR
1 stop36h 40m
China Southern
Wed 15/421:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 11/2£436
Mon 30/313:25
GMP
-
LHR
1 stop36h 40m
China Southern
Mon 6/421:00
LHR
-
GMP
1 stop31h 25m
China Southern
Deal found 13/2£439

Find 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 13 February 2026.

Round-trip from

£380

One-way from

£139

Popular in

October

Cheapest in

June

Average price

£588
China Southern
  • China Southern
  • 2/6-15/6
  • 2 total stops
  • 68h 05m total
  • Seoul to London
Search Deals
China Southern
  • China Southern
  • 18/3
  • 1 total stop
  • 37h 25m total
  • Seoul to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
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 13 February 2026.
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

Tue 2/6

13:25-18:05

1 stop36h 40m

London Heathrow

Mon 15/6

21:00-12:25

1 stop31h 25m

£380

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 9/3

14:25-17:55

1 stop36h 30m

London Heathrow

Sun 15/3

20:25-13:05

1 stop31h 40m

£458

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 8/5

13:30-18:05

1 stop36h 35m

London Heathrow

Sun 24/5

21:00-12:25

1 stop31h 25m

£483

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Wed 11/3

13:30-17:55

1 stop37h 25m

London Heathrow

Sun 15/3

21:30-12:25

1 stop29h 55m

£490

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Mon 2/3

14:25-17:55

1 stop36h 30m

London Heathrow

Wed 11/3

17:40-13:05

1 stop34h 25m

£497

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Fri 27/3

14:25-17:50

1 stop36h 25m

London Heathrow

Fri 3/4

22:40-13:05

1 stop30h 25m

£524

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 12/5

13:25-18:05

1 stop36h 40m

London Heathrow

Thu 11/6

21:00-12:25

1 stop31h 25m

£525

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Sat 16/5

13:25-18:05

1 stop36h 40m

London Heathrow

Mon 18/5

21:00-12:25

1 stop31h 25m

£533

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 17/3

14:25-15:55

1 stop34h 30m

London Heathrow

Fri 3/4

22:40-13:05

1 stop30h 25m

£540

SeoulLondon

GMP - LHR

GMPLHR

Seoul Gimpo Intl

Tue 31/3

13:25-18:05

1 stop36h 40m

£145

Flights are sorted by cheapest return flights first.

Deals found on 12/2

Showing 1-10 of 18 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.

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 China Southern and Air China fly from Seoul Gimpo Intl Airport to London Heathrow Airport in about 36h 30m. The time it takes to get you to your destination can typically vary by up to 10m. The distance from Seoul Gimpo Intl Airport to London Heathrow Airport is about 5506 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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
Croydon
Luton
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames
Ipswich
Swindon

Browse thousands of different options on Cheapflights for your next trip

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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

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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.

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