Flights between Jeju City (CJU) and Seoul (GMP)

Jeju International Airport, South Korea ↔ Gimpo International Airport, South Korea

A direct route between Jeju City and Seoul appears in the OpenFlights route network.

Confirming who flies CJU–GMP

We're verifying which airlines currently operate CJU–GMP. Current operators will appear here as our data refreshes.

Distance

451 km

280 miles

Est. flight time

1h 4m

great-circle estimate

Time difference

None

varies with DST

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Climate

Typical monthly temperatures in South Korea

Jan

3°

8/-2

20mm

Feb

6°

11/1

25mm

Mar

11°

16/6

50mm

Apr

18°

23/13

70mm

May

23°

28/18

100mm

Jun

27°

32/22

130mm

Jul

29°

34/24

350mm

Aug

30°

35/25

290mm

Sep

26°

31/21

170mm

Oct

20°

25/15

50mm

Nov

12°

17/7

50mm

Dec

5°

10/0

25mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in South Korea

Jan

3°

8/-2

20mm

Feb

6°

11/1

25mm

Mar

11°

16/6

50mm

Apr

18°

23/13

70mm

May

23°

28/18

100mm

Jun

27°

32/22

130mm

Jul

29°

34/24

350mm

Aug

30°

35/25

290mm

Sep

26°

31/21

170mm

Oct

20°

25/15

50mm

Nov

12°

17/7

50mm

Dec

5°

10/0

25mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Common questions

How far is Jeju City from Seoul?

Jeju City (CJU) and Seoul (GMP) are around 451 km (280 miles) apart — an estimated 1h 4m by air. Distances and flight times are great-circle estimates.

What is the time difference between Jeju City and Seoul?

Both airports keep the same time — no time difference.

When is it warmest in South Korea?

Across South Korea, the warmest month on average is August, with mean temperatures around 30°C. These are country-level monthly climate normals, not airport-specific.

Distances and flight times are great-circle estimates, not booked block times.