Statistics on Chicago-Seoul flights: what is the right price and when to buy your plane ticket?

Best time to go: what is the RIGHT price for a round-trip flight to Seoul (from: Chicago)

The average price to go to Seoul from Chicago airport is $ 2112 (round trip). However, there are variations depending on the departure month. Thus, it is possible to pay for your plane ticket on average between $ 1824 (in april) and $ 2544 (in july), which is a saving of $ 289 or a surplus of $ 433 (compared to the average price) depending on the period you leave.

The analysis of all prices reveals that the most frequent price is between $1990 to $2045 and it is generally more economical to leave on a thursday and return on a thursday on a flight with 1 or more layovers.

Be careful, the cheapest months may correspond to unfavorable weather periods . Check out our page best time to go to Seoul before booking your flight.

If you want to know when to book your flight at the best price, go straight to the second part of this page: When to buy your Chicago-Seoul plane ticket.

How are these data calculated?

We have studied a sample of 60066 airfare prices from previous years for flights to Seoul from Chicago and can thus establish precise and credible price variation trends based on different parameters. Of course, prices can vary from year to year, but the seasonal aspect of this data (recurrence of school holidays, events... from year to year) makes these statistics quite reliable.

Average price depending on the departure month

Created with Highcharts 8.2.2 $2119 $2119 $1938 $1938 $1913 $1913 $1824 $1824 $2055 $2055 $2440 $2440 $2544 $2544 $2414 $2414 $1827 $1827 $1827 $1827 $2001 $2001 $2444 $2444Average price of round-trip airfare in USD according to the departure monthjan.feb.mar.apr.mayjun.jul.aug.sep.oct.nov.dec.160018002000220024002600

Data analysis:

By leaving in april, the price of the plane ticket will statistically be the cheapest ($ 1824, saving $ 289 compared to the average price over the year which is $ 2112). Conversely, july will be the most expensive ($ 2544).

Flight Chicago-Seoul: when is the best time to go for the best price?

Month Good price* Average price Our opinion
January$ 1719 $ 2119 fair price
February$ 1575 $ 1938 good price
March$ 1582 $ 1913 good price
April$ 1512 $ 1824 very good price
May$ 1661 $ 2055 fair price
June$ 1975 $ 2440 high price
July$ 2034 $ 2544 very high price
August$ 1845 $ 2414 high price
September$ 1639 $ 1827 good price
October$ 1588 $ 1827 good price
November$ 1627 $ 2001 fair price
December$ 1975 $ 2444 high price

*great price to buy your plane ticket: if you see this price or cheaper during your flight search, go for it and buy it!

Price breakdown to travel from Chicago to Seoul

Created with Highcharts 8.2.22%2%3%3%4%4%3%3%2%2%2%2%2%2%1%1%1%1%1%1%2%2%2%2%2%2%2%2%3%3%3%3%4%4%4%4%5%5%5%5%4%4%4%4%4%4%3%3%3%3%3%3%2%2%2%2%2%2%2%2%1%1%1%1%1%1%Percentage of plane tickets found at this price$995 to $…$995 to $1050$1050 to $1106$1106 to $1161$1161 to $1216$1216 to $1271$1271 to $1327$1327 to $1382$1382 to $1437$1437 to $1492$1492 to $1548$1548 to $1603$1603 to $1658$1658 to $1713$1713 to $1769$1769 to $1824$1824 to $1879$1879 to $1934$1934 to $1990$1990 to $2045$2045 to $2100$2100 to $2155$2155 to $2211$2211 to $2266$2266 to $2321$2321 to $2376$2376 to $2432$2432 to $2487$2487 to $2542$2542 to $2597$2597 to $2653$2653 to $2708$2708 to $2763$2763 to $28180123456

Data analysis:

The prices for flights from Chicago to Seoul range from $994 to $2818. 2% of tickets were purchased at the minimum price (from $995 to $1050), 1% at the maximum price (from $2763 to $2818). The majority of plane tickets were purchased in the range of $2045 to $2100 (5% of tickets).

Cheapest airlines for the Chicago->Seoul flight

There are 7 companies that serve Chicago from Seoul airport: Korean Air, Delta, Turkish Airlines, EVA Air, Air Canada, LOT and Cathay Pacific.

Created with Highcharts 8.2.2Korean Air: 56 %Korean Air: 56 %Delta: 13 %Delta: 13 %Turkish Airlines: 9 %Turkish Airlines: 9 %EVA Air: 9 %EVA Air: 9 %Air Canada: 3 %Air Canada: 3 %LOT: 2 %LOT: 2 %Cathay Pacific: 2 %Cathay Pacific: 2 %

Data analysis:

Of the 60066 flights analyzed in previous years, Korean Air was the airline that offered the best fare most often in the flight ticket search results (56% of the time) on the Chicago->Seoul route.

Direct flight or flight with layover?

Created with Highcharts 8.2.2 $2424 $2424 $1407 $1407Average ticket price: direct flight or flight with layover(s)Direct flightFlight with layover125015001750200022502500

Data analysis:

To get the best price for the Chicago-Seoul flight, you should take a flight with one or more layovers (you will save an average of $ 1124 compared to a direct flight).

Which day of the week to leave?

Created with Highcharts 8.2.2 $ +47 $ +47 $ -9 $ -9 $ -44 $ -44 $ -37 $ -37 $ -75 $ -75 $ +40 $ +40 $ +97 $ +97Average airfare price according to the departure daya sundaya mondaya tuesdaya wednesdaya thursdaya fridaya saturday-100-50050100150

Data analysis:

Statistically, Chicago-Seoul flights departing on a thursday are cheaper than on other days of the week. By choosing a thursday as your departure date, you can save an average of $75. On the other hand, departing on a saturday may cost you an additional $97.

Which day of the week to come back?

Created with Highcharts 8.2.2 $ +87 $ +87 $ -33 $ -33 $ -22 $ -22 $ -47 $ -47 $ -72 $ -72 $ +21 $ +21 $ +41 $ +41Average airfare price based on the return daya sundaya mondaya tuesdaya wednesdaya thursdaya fridaya saturday-100-50050100

Data analysis:

Statistically, return flights from Seoul to Chicago departing on a thursday are cheaper than on other days of the week. By choosing a thursday for your return date, you will save an average of $72. Conversely, departing from Seoul on a sunday may cost you an additional $87.

Top prices Chicago-Seoul

Round tripDatesPrice
Chicago → Seoul08-05 to 25-05-2025$ 1038 
Chicago → Seoul12-08 to 26-08-2025$ 998 
Chicago → Seoul19-09 to 27-09-2025$ 1011 
Chicago → Seoul22-09 to 29-09-2025$ 939 
Chicago → Seoul05-10 to 22-10-2025$ 1066 
Chicago → Seoul06-10 to 22-10-2025$ 1046 
Chicago → Seoul15-11 to 29-11-2025$ 1014 
Chicago → Seoul15-01 to 29-01-2026$ 963 
Chicago → Seoul17-01 to 31-01-2026$ 1055 
Chicago → Seoul01-02 to 06-02-2026$ 971 

When to book your flight Chicago - Seoul to get the cheapest price?

Statistically, you will make the biggest savings by buying your plane ticket between 9 to 10 months in advance. However, you may end up paying a high price if you book between 0 to 1 month in advance.

Did you know: the price of plane tickets not only varies depending on how far in advance you book, but also on the day of the week you book! So, to maximize your chances of getting the best price for a Chicago-Seoul flight, it is recommended to book your ticket on a tuesday.

How far in advance should I buy my flight?

Created with Highcharts 8.2.2 $2631 $2631 $2224 $2224 $2117 $2117 $2040 $2040 $2001 $2001 $1955 $1955 $1923 $1923 $1870 $1870 $1856 $1856 $1855 $1855 $1892 $1892 $1954 $1954Average airfare price based on the number of months between booking and flight0 to 1 month1 to 2 months2 to 3 months3 to 4 months4 to 5 months5 to 6 months6 to 7 months7 to 8 months8 to 9 months9 to 10 months10 to 11 months11 to 12 months1600180020002200240026002800

Data analysis:

To get the cheapest flight ticket from Chicago to Seoul, it is recommended to buy it 9 to 10 months before departure (it is then on average 1855 $, which is a saving of 257 $ compared to the overall average price). On the other hand, if you buy your ticket 0 to 1 month in advance, you will pay the full price (519 $ more than the average price).

Depending on the departure month

The best time to buy your Chicago to Seoul flight ticket may vary depending on your departure month. Therefore, we offer you statistics on when to book your flight month by month.

Departure on... How far in advance should I book?
January

Best time: 9 to 10 months before departure (average price: 1690 $)

Other interesting period(s): 3 to 4 months ($ 2026), 4 to 5 months ($ 2032), 5 to 6 months ($ 1939), 6 to 7 months ($ 1870), 7 to 8 months ($ 1840), 8 to 9 months ($ 1743), 10 to 11 months ($ 1838), 11 to 12 months ($ 1849)
February

Best time: 9 to 10 months before departure (average price: 1709 $)

Other interesting period(s): 2 to 3 months ($ 1879), 3 to 4 months ($ 1803), 4 to 5 months ($ 1851), 5 to 6 months ($ 1797), 6 to 7 months ($ 1848), 7 to 8 months ($ 1733), 8 to 9 months ($ 1713), 10 to 11 months ($ 1776)
March

Best time: 9 to 10 months before departure (average price: 1643 $)

Other interesting period(s): 1 to 2 months ($ 1818), 2 to 3 months ($ 1815), 3 to 4 months ($ 1808), 4 to 5 months ($ 1835), 5 to 6 months ($ 1905), 6 to 7 months ($ 1830), 7 to 8 months ($ 1795), 8 to 9 months ($ 1728), 10 to 11 months ($ 1648), 11 to 12 months ($ 1866)
April

Best time: 7 to 8 months before departure (average price: 1616 $)

Other interesting period(s): 2 to 3 months ($ 1743), 3 to 4 months ($ 1787), 4 to 5 months ($ 1761), 5 to 6 months ($ 1753), 6 to 7 months ($ 1709), 8 to 9 months ($ 1686), 9 to 10 months ($ 1635), 10 to 11 months ($ 1716), 11 to 12 months ($ 1703)
May

Best time: 10 to 11 months before departure (average price: 1830 $)

Other interesting period(s): 2 to 3 months ($ 1962), 3 to 4 months ($ 1948), 4 to 5 months ($ 1948), 5 to 6 months ($ 2009), 7 to 8 months ($ 2019), 8 to 9 months ($ 2011), 9 to 10 months ($ 1908), 11 to 12 months ($ 1913)
June

Best time: 10 to 11 months before departure (average price: 2165 $)

Other interesting period(s): 2 to 3 months ($ 2413), 3 to 4 months ($ 2280), 4 to 5 months ($ 2186), 5 to 6 months ($ 2197), 6 to 7 months ($ 2260), 7 to 8 months ($ 2273), 8 to 9 months ($ 2205), 9 to 10 months ($ 2227), 11 to 12 months ($ 2166)
July

Best time: 9 to 10 months before departure (average price: 2087 $)

Other interesting period(s): 3 to 4 months ($ 2384), 4 to 5 months ($ 2322), 5 to 6 months ($ 2143), 6 to 7 months ($ 2120), 7 to 8 months ($ 2128), 8 to 9 months ($ 2223), 10 to 11 months ($ 2103)
August

Best time: 7 to 8 months before departure (average price: 1927 $)

Other interesting period(s): 3 to 4 months ($ 2175), 4 to 5 months ($ 2120), 5 to 6 months ($ 2079), 6 to 7 months ($ 1981), 8 to 9 months ($ 2060), 9 to 10 months ($ 2096), 10 to 11 months ($ 2000)
September

Best time: 5 to 6 months before departure (average price: 1640 $)

Other interesting period(s): 3 to 4 months ($ 1771), 4 to 5 months ($ 1688), 6 to 7 months ($ 1771), 7 to 8 months ($ 1770), 8 to 9 months ($ 1795), 9 to 10 months ($ 1805)
October

Best time: 5 to 6 months before departure (average price: 1639 $)

Other interesting period(s): 3 to 4 months ($ 1765), 4 to 5 months ($ 1741), 6 to 7 months ($ 1702), 7 to 8 months ($ 1752), 8 to 9 months ($ 1697), 9 to 10 months ($ 1811)
November

Best time: 6 to 7 months before departure (average price: 1672 $)

Other interesting period(s): 3 to 4 months ($ 1948), 4 to 5 months ($ 1843), 5 to 6 months ($ 1858), 7 to 8 months ($ 1734), 8 to 9 months ($ 1791), 9 to 10 months ($ 1845), 10 to 11 months ($ 1828)
December

Best time: 8 to 9 months before departure (average price: 1987 $)

Other interesting period(s): 4 to 5 months ($ 2366), 5 to 6 months ($ 2232), 6 to 7 months ($ 2221), 7 to 8 months ($ 2064), 9 to 10 months ($ 2100), 10 to 11 months ($ 2064), 11 to 12 months ($ 2085)

What day of the week should I book my flight ticket?

Created with Highcharts 8.2.2 $ +7 $ +7 $ +25 $ +25 $ -70 $ -70 $ -18 $ -18 $ +18 $ +18 $ +31 $ +31 $ +33 $ +33Average price of plane ticket according to the booking daysundaymondaytuesdaywednesdaythursdayfridaysaturday-100-75-50-2502550

Data analysis:

Statistically, tuesday is the day when plane tickets for Chicago->Seoul are the cheapest. So, by buying your plane ticket on a tuesday, you will save $70. Conversely, by buying it on a saturday, you may end up paying $33 more.

Chicago to Seoul: flight price when booking today

Information: this data is not statistics but comes from real prices collected less than 7 days ago. Some months may not be available as we do not have enough data for them.

Month Current price
April 2025$ 1722
$1039 to $2591		Find a flight
May 2025$ 1834
$892 to $3050		Find a flight
June 2025$ 2456
$1120 to $4436		Find a flight
July 2025$ 2166
$1264 to $3700		Find a flight
August 2025$ 1878
$998 to $3243		Find a flight
September 2025$ 1798
$939 to $2377		Find a flight
October 2025$ 1829
$1016 to $2918		Find a flight
November 2025$ 1853
$910 to $4111		Find a flight
December 2025$ 1992
$904 to $2384		Find a flight
January 2026$ 1598
$963 to $1975		Find a flight
February 2026$ 1741
$971 to $2248		Find a flight
March 2026$ 1932
$1486 to $2328		Find a flight

Data analysis:

Compared to the average price, april, may, july, august, september, november, december, january and february are cheaper to travel to Seoul. So it may be interesting to book now to leave during these months!

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