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$819+ Cheap flights from Busan (PUS) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
PUS — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Busan to Illinois

Keep the following information in mind while searching for Busan to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$819
(Delta)
From Busan Gimhae to Illinois
Search Deals

Find flight deals from Busan to Illinois

Cheapest flights from Busan to Illinois
Explore the most affordable flight options available from Busan to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amPUS - STL
2 stops31h 24mDelta
Mon 10/207:30 pmSTL - PUS
2 stops35h 15mDelta
Deal found 9/14$819
This Korean Air deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:00 pmPUS - STL
2 stops26h 41mKorean Air
Sun 1/186:30 amSTL - PUS
2 stops22h 05mKorean Air
Deal found 9/14$958
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:30 amPUS - ORD
3 stops45h 11mMultiple Airlines
Tue 11/43:40 pmORD - PUS
3 stops26h 25mMultiple Airlines
Deal found 9/13$1,216
This WhyPayMore deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:30 pmPUS - ORD
1 stop31h 00mKorean Air
Wed 10/2912:15 pmORD - PUS
1 stop29h 55mKorean Air
Deal found 9/14$1,305
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:00 amPUS - ORD
2 stops30h 50mDelta
Wed 10/298:57 amORD - PUS
2 stops33h 13mDelta
Deal found 9/14$1,322
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:30 pmPUS - MDW
2 stops34h 38mDelta
Wed 10/299:35 amMDW - PUS
2 stops32h 35mDelta
Deal found 9/14$1,335
This Korean Air deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:55 amPUS - ORD
1 stop15h 35mKorean Air
Tue 11/411:15 amORD - PUS
1 stop17h 20mKorean Air
Deal found 9/13$1,350
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:15 amPUS - STL
2 stops50h 28mMultiple Airlines
Mon 10/209:15 amSTL - PUS
3 stops34h 05mMultiple Airlines
Deal found 9/14$1,670
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:55 amPUS - ORD
2 stops31h 04mDelta
Tue 12/2311:15 amORD - PUS
1 stop36h 55mDelta
Deal found 9/14$1,748
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/284:10 pmPUS - MDW
2 stops30h 45mDelta
Tue 11/46:00 amMDW - PUS
2 stops22h 30mDelta
Deal found 9/13$5,227
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:00 pmPUS - MDW
2 stops26h 32mDelta
Tue 12/235:59 pmMDW - PUS
2 stops35h 46mDelta
Deal found 9/14$5,329

Cheapflights Fare Finder

 
Customize your flight search to find flights from Busan to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Busan to Illinois that are best for you.

Fly from

Busan

Fly to

Illinois

Route

Depart

Return

Price

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Mon 10/13

7:00 am-12:24 am

2 stops31h 24m

Lambert-St Louis

Mon 10/20

7:30 pm-8:45 pm

2 stops35h 15m

$819

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Mon 12/15

12:00 pm-11:41 pm

2 stops26h 41m

Lambert-St Louis

Sun 1/18

6:30 am-7:35 pm

2 stops22h 05m

$958

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Thu 10/23

4:30 pm-9:30 am

1 stop31h 00m

Chicago O'Hare Intl

Wed 10/29

12:15 pm-8:10 am

1 stop29h 55m

$1,305

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Tue 10/28

7:30 am-2:41 pm

3 stops45h 11m

Chicago O'Hare Intl

Tue 11/4

11:30 pm-5:40 pm

1 stop27h 10m

$1,310

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Thu 10/23

10:40 am-11:50 pm

2 stops27h 10m

Chicago O'Hare Intl

Wed 10/29

8:57 am-8:10 am

2 stops33h 13m

$1,324

BusanChicago

PUS - MDW

PUSMDW

Busan Gimhae

Thu 10/23

4:30 pm-1:08 pm

2 stops34h 38m

Chicago Midway

Wed 10/29

9:35 am-8:10 am

2 stops32h 35m

$1,335

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Tue 10/28

7:55 am-9:30 am

1 stop15h 35m

Chicago O'Hare Intl

Tue 11/4

11:15 am-7:35 pm

1 stop17h 20m

$1,350

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Mon 10/13

7:15 am-7:43 pm

2 stops50h 28m

Lambert-St Louis

Mon 10/20

9:15 am-9:20 am

3 stops34h 05m

$1,670

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Sat 12/13

7:55 am-11:59 pm

2 stops31h 04m

Chicago O'Hare Intl

Tue 12/23

11:15 am-3:10 pm

1 stop36h 55m

$1,748

BusanChicago

PUS - MDW

PUSMDW

Busan Gimhae

Tue 10/28

4:10 pm-8:55 am

2 stops30h 45m

Chicago Midway

Tue 11/4

6:00 am-7:30 pm

2 stops22h 30m

$5,227

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 11 results
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Best time to book a flight from Busan to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Busan with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Busan to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Busan to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Busan to Illinois?

    For a flight from Busan to Illinois, you will be flying from Gimhae. Busan Gimhae (PUS) is just 7.2 mi from the center of the city.

  • How long is the flight from Busan to Illinois?

    Departing from Busan to Illinois will take you 26h 41m. There are 6740 mi between Busan and Illinois. This flight may include one or multiple stops.

  • What are the most popular routes from Busan to Illinois?

    The most popular route from Busan to Illinois is Busan Gimhae - Chicago Midway. You may also consider Busan Gimhae - Chicago O'Hare Intl or Busan Gimhae - Lambert-St Louis.

  • Can I find deals for flights from Busan to Illinois that include hotel bookings?

    Yes. In addition to deals on Busan to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Busan to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Busan to Illinois.

  • Can I find deals for business class flights from Busan to Illinois?

    Yes. Cheapflights offers flight deals from Busan to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Busan to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Busan to Illinois (average of $245). Flying from Busan to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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