San Francisco
Incheon Intl
1 stop
26h 15mZIPAIR
Los Angeles
Incheon Intl
1 stop
20h 45mMultiple Airlines
Seattle/Tacoma Intl
Incheon Intl
2 stops
52h 40mPhilippine Airlines
Los Angeles
Incheon Intl
1 stop
20h 35mXiamenAir
New York John F Kennedy Intl
Incheon Intl
1 stop
28h 50mUzbekistan Airways
New York John F Kennedy Intl
Incheon Intl
1 stop
33h 10mAir India
Seattle/Tacoma Intl
Incheon Intl
2 stops
49h 57mIncheon Intl
Seattle/Tacoma Intl
1 stop
27h 05mPhilippine Airlines
New York John F Kennedy Intl
Incheon Intl
1 stop
30h 30mIncheon Intl
New York John F Kennedy Intl
1 stop
37h 45mUzbekistan Airways
Los Angeles
Incheon Intl
1 stop
20h 35mIncheon Intl
Los Angeles
2 stops
23h 10mMultiple Airlines
San Francisco
Incheon Intl
1 stop
31h 05mIncheon Intl
San Francisco
1 stop
34h 35mTurkish Airlines
Seattle/Tacoma Intl
Incheon Intl
Nonstop
11h 40mIncheon Intl
Seattle/Tacoma Intl
Nonstop
10h 45mKorean Air
San Francisco
Incheon Intl
1 stop
22h 50mIncheon Intl
San Francisco
2 stops
43h 30mChina Southern
January
$3,259
February
$3,333
March
$3,177
April
$760
May
$3,887
June
$1,665
July
$2,821
August
$3,457
September
$2,214
October
$3,886
November
$2,595
December
$2,488
April is currently the cheapest month to fly business class to Seoul. At this moment in time May is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.