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Seoul to Beijing flights in December 2026 from $242 GMP, ICN → PEK, PKX

Gimpo International Airport (GMP), Incheon International Airport (ICN) → Beijing Capital International Airport (PEK), Beijing Daxing International Airport (PKX)

For departures in December 2026, the cheapest return found recently is $242 with Air China, 29 Dec – 11 Jan 2027, found yesterday.

Return

In December 2026, the cheapest return fare on each of 20 departure dates is usually $241 to $252. Across all 67 departure dates we hold on this route, it is usually $247 to $294. Of the 6 months with enough return fares to compare, 1 is usually cheaper than December 2026.

Cheapest return found recently

$242

29 Dec – 11 Jan 2027 · Air China

Incheon International Airport (ICN) → Beijing Capital International Airport (PEK)

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

Cheapest we hold, of any age

$225

1 Dec – 15 Dec · Jeju Air

Gimpo International Airport (GMP) → Beijing Daxing International Airport (PKX)

out 1 stop, back 1 stop

found 7 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
1 Dec – 15 Dec$225Jeju Airout 1 stop, back 1 stopfound 7 days agoSee prices for these dates
9 Dec – 16 Dec$236Air Chinaout nonstop, back nonstopfound 2 days agoSee prices for these dates
7 Dec – 11 Dec$236Air Chinaout nonstop, back nonstopfound 6 days agoSee prices for these dates
8 Dec – 12 Dec$239Air Chinaout nonstop, back nonstopfound 4 days agoSee prices for these dates
23 Dec – 27 Dec$239Air Chinaout nonstop, back nonstopfound 4 days agoSee prices for these dates

Every date we hold

20 departure dates

1 Dec – 15 Dec: $225, found 7 days ago2 Dec – 26 Dec: $249, found 5 days ago5 Dec – 13 Dec: $252, found 4 days ago7 Dec – 11 Dec: $236, found 6 days ago8 Dec – 12 Dec: $239, found 4 days ago9 Dec – 16 Dec: $236, found 2 days ago10 Dec – 7 Jan 2027: $244, found 2 days ago14 Dec – 10 Jan 2027: $249, found 5 days ago15 Dec – 26 Dec: $251, found 2 days ago17 Dec – 19 Dec: $252, found 2 days ago20 Dec – 4 Jan 2027: $275, found 2 days ago21 Dec – 27 Dec: $247, found 2 days ago22 Dec – 16 Jan 2027: $241, found 7 days ago23 Dec – 27 Dec: $239, found 4 days ago24 Dec – 7 Jan 2027: $277, found 5 days ago25 Dec – 8 Jan 2027: $252, found 5 days ago26 Dec – 10 Jan 2027: $249, found 4 days ago27 Dec – 27 Dec: $308, found 7 days ago29 Dec – 11 Jan 2027: $242, found yesterday30 Dec – 5 Jan 2027: $243, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 15 Dec$225Jeju AirGimpo International Airport (GMP) → Beijing Daxing International Airport (PKX)out 1 stop, back 1 stopfound 7 days agoSee prices for these dates
2 Dec – 26 Dec$249Air ChinaIncheon International Airport (ICN) → Beijing Daxing International Airport (PKX)out nonstop, back nonstopfound 5 days agoSee prices for these dates
5 Dec – 13 Dec$252Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 4 days agoSee prices for these dates
7 Dec – 11 Dec$236Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 6 days agoSee prices for these dates
8 Dec – 12 Dec$239Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 4 days agoSee prices for these dates
9 Dec – 16 Dec$236Air ChinaGimpo International Airport (GMP) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 2 days agoSee prices for these dates
10 Dec – 7 Jan 2027$244Air ChinaGimpo International Airport (GMP) → Beijing Capital International Airport (PEK)out nonstop, back 1 stopfound 2 days agoSee prices for these dates
14 Dec – 10 Jan 2027$249Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 5 days agoSee prices for these dates
15 Dec – 26 Dec$251Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 2 days agoSee prices for these dates
17 Dec – 19 Dec$252Air ChinaIncheon International Airport (ICN) → Beijing Daxing International Airport (PKX)out nonstop, back nonstopfound 2 days agoSee prices for these dates
20 Dec – 4 Jan 2027$275Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 2 days agoSee prices for these dates
21 Dec – 27 Dec$247Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 2 days agoSee prices for these dates
22 Dec – 16 Jan 2027$241Air ChinaIncheon International Airport (ICN) → Beijing Daxing International Airport (PKX)out nonstop, back nonstopfound 7 days agoSee prices for these dates
23 Dec – 27 Dec$239Air ChinaIncheon International Airport (ICN) → Beijing Daxing International Airport (PKX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
24 Dec – 7 Jan 2027$277Air ChinaGimpo International Airport (GMP) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 5 days agoSee prices for these dates
25 Dec – 8 Jan 2027$252Air ChinaGimpo International Airport (GMP) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 5 days agoSee prices for these dates
26 Dec – 10 Jan 2027$249Air ChinaIncheon International Airport (ICN) → Beijing Daxing International Airport (PKX)out nonstop, back nonstopfound 4 days agoSee prices for these dates
27 Dec – 27 Dec$308Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back 1 stopfound 7 days agoSee prices for these dates
29 Dec – 11 Jan 2027$242Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound yesterdaySee prices for these dates
30 Dec – 5 Jan 2027$243Air ChinaIncheon International Airport (ICN) → Beijing Capital International Airport (PEK)out nonstop, back nonstopfound 2 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $207.

November 2026From $207Cheapest seen13 departure dates26 Nov – 11 Dec · found 3 days agoSee prices for these datesEvery date in November 2026
December 2026From $22520 departure dates1 Dec – 15 Dec · found 7 days agoSee prices for these dates
January 2027From $24710 departure dates6 Jan 2027 – 13 Jan 2027 · found 4 days agoSee prices for these datesEvery date in January 2027
February 2027From $2584 departure dates15 Feb 2027 – 22 Feb 2027 · found 6 days agoSee prices for these datesEvery date in February 2027
March 2027From $2689 departure dates8 Mar 2027 – 21 Mar 2027 · found 2 days agoSee prices for these datesEvery date in March 2027
April 2027From $3032 departure dates14 Apr 2027 – 25 Apr 2027 · found yesterdaySee prices for these datesEvery date in April 2027
May 2027From $2915 departure dates20 May 2027 – 23 May 2027 · found 4 days agoSee prices for these datesEvery date in May 2027
June 2027From $3061 departure date19 Jun 2027 – 25 Jun 2027 · found 4 days agoSee prices for these dates
July 2027From $3571 departure date25 Jul 2027 – 21 Sept 2027 · found 2 days agoSee prices for these dates
October 2027From $2962 departure dates17 Oct 2027 – 24 Oct 2027 · found 2 days agoSee prices for these dates

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work