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Time Difference: Chicago to Seoul

🇺🇸ChicagoUTC-6
vs
🇰🇷SeoulUTC+9
🇺🇸
Chicago, US
Sat, May 30
🇰🇷
Seoul, South Korea
Sun, May 31

Click a time to convert

Time Difference
14 hours
Seoul is 14 hours ahead of Chicago
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🇺🇸
Chicago
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🇰🇷
Seoul
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Chicago vs Seoul timezone guide

Chicago (US) uses the America/Chicago timezone at UTC-6, while Seoul (South Korea) uses Asia/Seoul at UTC+9. This means Seoul is 15 hours ahead of Chicago (based on standard offsets — the live difference above accounts for daylight saving time).

Best meeting times between Chicago and Seoul

Standard 9-to-5 working hours in Chicago and Seoul do not overlap. To meet synchronously, one side will need to start early or stay late — see the hour-by-hour planner below for the least disruptive options.

Hour-by-hour planner

ChicagoSeoulStatus
6am8pmChicago early, Seoul evening
7am9pmChicago early, Seoul evening
8am10pmChicago early, Seoul late evening
9am11pmChicago working hours, Seoul late evening
10am12amChicago working hours, Seoul asleep
11am1amChicago working hours, Seoul asleep
12pm2amChicago working hours, Seoul asleep
1pm3amChicago working hours, Seoul asleep
2pm4amChicago working hours, Seoul asleep
3pm5amChicago working hours, Seoul asleep
4pm6amOne side outside 9-to-5 but still awake
5pm7amChicago evening, Seoul early
6pm8amChicago evening, Seoul early
7pm9amOne side outside 9-to-5 but still awake
8pm10amOne side outside 9-to-5 but still awake
9pm11amOne side outside 9-to-5 but still awake
10pm12pmChicago late evening, Seoul working hours

Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.

Daylight saving time between Chicago and Seoul

Chicago observes daylight saving time, but Seoul does not. That means the difference between the two cities changes seasonally — by one hour, around Chicago's transition dates.

  • Dec 31 → Mar 8Chicago is 15 hours behind Seoul
  • Mar 8 → Nov 1Chicago is 14 hours behind Seoul
  • Nov 1 → Dec 31Chicago is 15 hours behind Seoul

Distance between Chicago and Seoul

Great-circle distance
10,510 km
Direct flight time
~13h 22m

Chicago and Seoul are 10,510 km apart along the great-circle route. A direct flight takes roughly ~13h 22m, depending on aircraft type, winds, and routing.

More comparisons

Chicago to New YorkChicago to LondonChicago to TokyoChicago to SydneySeoul to New YorkSeoul to LondonSeoul to TokyoSeoul to Sydney

Frequently asked questions

What is the time difference between Chicago and Seoul?
The current time difference is 14 hours. Chicago is currently 14 hours behind Seoul.
Is Chicago ahead of Seoul?
No. Chicago is currently 14 hours behind Seoul.
What time is it in Seoul when it's 9 AM in Chicago?
When it's 9 AM in Chicago, it's 11pm in Seoul.
When is the best time to schedule a meeting between Chicago and Seoul?
Standard 9-to-5 working hours in Chicago and Seoul do not overlap. To meet synchronously, one side will need to start before 9 AM or work past 5 PM — see the planner above for the least disruptive options.
Do Chicago and Seoul observe daylight saving time?
Chicago observes daylight saving time, but Seoul does not — the difference between the two cities changes by one hour around the DST transition dates.
How far apart are Chicago and Seoul?
Chicago and Seoul are 10,510 km apart along the great-circle route. A direct flight takes roughly 13 hours 22 minutes.