Cheap flights from Seoul to Beijing from $142 GMP, ICN → PEK, PKX

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $196 to $230.

At $236, the cheapest return found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 7-night return fares leaving within 3 days of 9 Dec to compare.

Every date we hold

1001 fares on 67 departure dates

Which month looks cheapest?

November 2026 is the cheapest month — from $207.

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $57 to $134.

At $142, the cheapest one-way found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

Yes. Among one-way fares leaving within 3 days of 15 Jan 2027, 16 Jan 2027 costs $132: $10 less than the cheapest found recently.

Eastar Jet · Gimpo International Airport (GMP) → Beijing Daxing International Airport (PKX) · 1 stop · found 6 days ago

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Every date we hold

198 fares on 62 departure dates

Which month looks cheapest?

March 2027 is the cheapest month — from $117.

Return

Fares 14 to 29 days before departure were typically 8% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

The cheapest fares were 30 to 59 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Seoul to Beijing?

The cheapest return found recently is $236 with Air China, 9 Dec to 16 Dec, found 2 days ago. The cheapest return we hold, of any age, is $207 with Jeju Air, 26 Nov to 11 Dec, found 3 days ago. The cheapest return fare on each of 67 departure dates is usually $247 to $294.

How much is a one-way flight from Seoul to Beijing?

The cheapest one-way found recently is $142 with Asiana Airlines, 15 Jan 2027, found 2 days ago. The cheapest one-way we hold, of any age, is $117 with Jeju Air, 2 Mar 2027, found 5 days ago. The cheapest one-way fare on each of 62 departure dates is usually $144 to $181.

What is the cheapest month to fly from Seoul to Beijing?

November 2026 is the cheapest month for a return, from $207, 26 Nov to 11 Dec, found 3 days ago. March 2027 is the cheapest month for a one-way, from $117, 2 Mar 2027, found 5 days ago.

Every date in November 2026

Every date in March 2027

How far ahead should I book a flight from Seoul to Beijing?

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 8% lower than 0 to 6 days before departure. One-way fares were cheapest 30 to 59 days before departure.

Is there a direct flight from Seoul to Beijing?

Yes, the cheapest nonstop return found recently is $236 with Air China, 9 Dec to 16 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $142 with Asiana Airlines, 15 Jan 2027, found 2 days ago.

How long is the flight from Seoul to Beijing?

The cheapest nonstop one-way found recently, with Asiana Airlines on 15 Jan 2027, takes 2 h 10 min from Gimpo International Airport (GMP) to Beijing Capital International Airport (PEK).

Which airlines have the cheapest flights from Seoul to Beijing?

Between 13 Nov and 17 Oct 2027, Air China has the cheapest return on 27 of the 67 departure dates we hold, Asiana Airlines on 17 and Korean Air on 10. Between 15 Jan 2027 and 16 Oct 2027, Asiana Airlines has the cheapest one-way on 27 of the 62 departure dates we hold, China Southern Airlines on 18 and Korean Air on 9.