How long is the flight from Seoul Gimpo Intl Airport to London Heathrow Airport?

Airlines like EVA Air and Japan Airlines fly from Seoul Gimpo Intl Airport to London Heathrow Airport in about 19h 45m. The time it takes to get you to your destination can typically vary by up to 18h 30m. 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.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from GMP to LHR?

When flying from Seoul Gimpo Intl Airport to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£184+ Cheap Flights from Seoul Gimpo Intl Airport to London Heathrow Airport

Cheap flight deals from Gimpo Intl to Heathrow

Enter your travel dates to find the best prices.

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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 23 August 2026.

Wed 4/1113:30 -

1 stop37h 25m

Mon 9/1121:30 -

1 stop29h 55m

Deal found 20/8£512

Wed 4/1113:30 -

1 stop37h 25m

Fri 13/1121:30 -

1 stop29h 55m

Deal found 23/8£515

Mon 7/913:30 -

1 stop36h 35m

Tue 15/921:00 -

1 stop31h 25m

Deal found 19/8£519

Mon 9/1114:25 -

1 stop34h 30m

Mon 16/1120:25 -

1 stop31h 40m

Deal found 19/8£525

Tue 1/1214:25 -

1 stop34h 30m

Mon 7/1220:25 -

1 stop31h 40m

Deal found 18/8£531

Fri 6/1114:25 -

1 stop36h 25m

Mon 9/1120:25 -

1 stop31h 40m

Deal found 20/8£531

Mon 23/1114:25 -

1 stop36h 25m

Sun 29/1120:25 -

1 stop31h 40m

Deal found 21/8£536

Sun 22/1114:25 -

1 stop34h 30m

Tue 1/1217:40 -

1 stop34h 25m

Deal found 23/8£538

Sat 19/1214:25 -

1 stop36h 25m

Sat 26/1217:40 -

1 stop34h 25m

Deal found 19/8£539

Find flight deals from Gimpo Intl to Heathrow

Round-trip from	£512
One-way from	£184
Popular in	October
Cheapest in	January
Average price	£583

China Southern
4/11-9/11
2 total stops
67h 20m total
Seoul to London

Search Deals

China Southern
18/10
1 total stop
36h 35m total
Seoul to London

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£43 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 August 2026

Search Deals

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Tue 1/12

08:35-22:55

2 stops23h 20m

London Heathrow

Mon 7/12

08:45-13:00

2 stops19h 15m

£583

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Wed 4/11

08:35-22:55

2 stops23h 20m

London Heathrow

Mon 9/11

08:45-13:00

2 stops19h 15m

£690

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Sat 7/11

13:50-19:05

2 stops38h 15m

London Heathrow

Mon 16/11

21:20-19:15

2 stops36h 55m

£988

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Wed 4/11

20:15-19:05

2 stops31h 50m

London Heathrow

Sat 14/11

21:20-18:00

2 stops59h 40m

£1,059

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Tue 10/11

19:40-06:25

1 stop19h 45m

London Heathrow

Fri 13/11

18:10-10:45

2 stops55h 35m

£1,216

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Thu 5/11

19:40-06:25

1 stop19h 45m

London Heathrow

Mon 16/11

08:50-22:05

1 stop28h 15m

£1,250

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Sun 8/11

08:15-06:25

1 stop31h 10m

London Heathrow

Mon 16/11

08:50-18:20

1 stop24h 30m

£1,250

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Wed 4/11

08:15-06:25

1 stop31h 10m

London Heathrow

Fri 13/11

08:50-18:20

1 stop24h 30m

£1,274

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Sat 7/11

08:15-06:25

1 stop31h 10m

London Heathrow

Thu 12/11

08:50-18:20

1 stop24h 30m

£1,274

Cheapest one-way

SeoulLondon

GMP Seoul Gimpo Intl - LHR London Heathrow

GMPLHR

Seoul Gimpo Intl

Tue 3/11

14:25-15:55

1 stop34h 30m

£264

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 20 resultsSorted by cheapest first

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.

GMP-LHR

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.

Related info for your journey

How long is the flight from Seoul Gimpo Intl Airport to London Heathrow Airport?
Airlines like EVA Air and Japan Airlines fly from Seoul Gimpo Intl Airport to London Heathrow Airport in about 19h 45m. The time it takes to get you to your destination can typically vary by up to 18h 30m. 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.

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

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Cheap flights from Seoul Gimpo Intl Airport to London Heathrow Airport from £184

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Gimpo Intl to Heathrow

Cheapest flights from Gimpo Intl to HeathrowExplore 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 23 August 2026.

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 23 August 2026.

Best flights from Gimpo Intl to HeathrowDiscover carefully curated flight deals from Gimpo Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Discover carefully curated flight deals from Gimpo Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Last-minute flights from Gimpo Intl to HeathrowDiscover last-minute flight deals from Gimpo Intl to Heathrow. Data last updated 23 August 2026 and is based on user searches.

Discover last-minute flight deals from Gimpo Intl to Heathrow. Data last updated 23 August 2026 and is based on user searches.

One-way flights from Gimpo Intl to HeathrowSearch for one-way flight options from Gimpo Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.

Search for one-way flight options from Gimpo Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.

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Use the filters below to find and compare flights from Seoul Gimpo Intl Airport to London Heathrow Airport that are best for you.

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.

Related info for your journey

How long is the flight from Seoul Gimpo Intl Airport to London Heathrow Airport?

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

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

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for Gimpo Intl to Heathrow

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Direct flights to England

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Other flights to Heathrow

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

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

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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 23 August 2026.

Best flights from Gimpo Intl to Heathrow
Discover carefully curated flight deals from Gimpo Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Last-minute flights from Gimpo Intl to Heathrow
Discover last-minute flight deals from Gimpo Intl to Heathrow. Data last updated 23 August 2026 and is based on user searches.

One-way flights from Gimpo Intl to Heathrow
Search for one-way flight options from Gimpo Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.