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Busan

$527+ Cheap flights from Illinois to Busan (PUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PUS
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find flight deals from Illinois to Busan

Cheapest flights from Illinois to Busan
Explore the most affordable flight options available from Illinois to Busan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Mytrip deal was found by Cheapflights users on 10/26. 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.
Thu 12/1112:50 pmORD - PUS
3 stops31h 45mMultiple Airlines
Thu 12/185:50 pmPUS - ORD
3 stops34h 05mMultiple Airlines
Deal found 10/26$1,653
This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:30 pmORD - PUS
1 stop27h 10mEVA Air
Tue 1/136:55 pmPUS - ORD
2 stops37h 07mEVA Air
Deal found 10/29$1,754
This Gurufare deal was found by Cheapflights users on 10/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:30 pmORD - PUS
1 stop27h 10mEVA Air
Thu 12/186:55 pmPUS - ORD
1 stop39h 40mEVA Air
Deal found 10/26$1,794
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Fri 12/1212:50 pmORD - PUS
3 stops31h 45mMultiple Airlines
Fri 12/197:20 amPUS - ORD
3 stops26h 18mMultiple Airlines
Deal found 10/28$1,803
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Sat 12/134:49 pmORD - PUS
2 stops33h 51mMultiple Airlines
Sat 12/209:30 amPUS - ORD
3 stops38h 38mMultiple Airlines
Deal found 10/29$1,870
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:35 pmORD - PUS
2 stops36h 05mEVA Air
Fri 12/196:55 pmPUS - ORD
1 stop39h 40mEVA Air
Deal found 10/28$1,917
This Delta deal was found by Cheapflights users on 10/28. 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.
Fri 12/126:00 amMDW - PUS
2 stops23h 45mDelta
Fri 12/197:00 amPUS - MDW
2 stops24h 31mDelta
Deal found 10/28$2,508
This Delta deal was found by Cheapflights users on 10/26. 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 12/116:00 amMDW - PUS
2 stops23h 45mDelta
Thu 12/184:10 pmPUS - MDW
2 stops32h 09mDelta
Deal found 10/26$5,701

Cheap flight deals from Illinois to Busan

Keep the following information in mind while searching for Illinois to Busan flight deals. Data was last updated October 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$862
(FlightHub)

One-way from

$527
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-Busan Gimhae flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Busan Gimhae flights.
Search Deals
From Illinois to Busan Gimhae
Search Deals
One-way flight from Illinois to Busan Gimhae
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Busan 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 October 29, 2025.
Use the filters below to find and compare flights from Illinois to Busan that are best for you.

Fly from

Illinois

Fly to

Busan

Route

Depart

Return

Price

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Thu 2/26

7:30 am-8:45 pm

2 stops22h 15m

Busan Gimhae

Mon 3/2

7:55 am-11:10 pm

2 stops30h 15m

$1,224

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Thu 2/26

7:00 am-7:35 pm

2 stops21h 35m

Busan Gimhae

Mon 3/2

4:10 pm-11:10 pm

2 stops22h 00m

$1,238

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Thu 12/11

12:50 pm-11:35 am

3 stops31h 45m

Busan Gimhae

Thu 12/18

5:50 pm-12:55 pm

3 stops34h 05m

$1,653

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sat 12/27

11:30 pm-5:40 pm

1 stop27h 10m

Busan Gimhae

Tue 1/13

6:55 pm-5:02 pm

2 stops37h 07m

$1,754

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Thu 12/11

11:30 pm-5:40 pm

1 stop27h 10m

Busan Gimhae

Thu 12/18

6:55 pm-7:35 pm

1 stop39h 40m

$1,794

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Fri 12/12

12:50 pm-11:35 am

3 stops31h 45m

Busan Gimhae

Fri 12/19

7:20 am-6:38 pm

3 stops26h 18m

$1,803

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sat 12/13

4:49 pm-5:40 pm

2 stops33h 51m

Busan Gimhae

Sat 12/20

9:30 am-9:08 am

3 stops38h 38m

$1,870

ChicagoBusan

MDW - PUS

MDWPUS

Chicago Midway

Fri 12/12

6:00 am-8:45 pm

2 stops23h 45m

Busan Gimhae

Fri 12/19

7:00 am-4:31 pm

2 stops24h 31m

$2,508

ChicagoBusan

MDW - PUS

MDWPUS

Chicago Midway

Thu 12/11

6:00 am-8:45 pm

2 stops23h 45m

Busan Gimhae

Thu 12/18

4:10 pm-9:19 am

2 stops32h 09m

$5,701

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Thu 11/20

6:45 pm-8:15 pm

3 stops58h 30m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 14 results
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Best time to book a flight from Illinois to Busan

Have a flexible travel schedule? Discover the best time to fly to Busan from Illinois 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 Illinois to Busan
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 Illinois to Busan. 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 into for flights to Busan from Illinois?

    If you book a flight to Busan from Illinois, you will be flying to Gimhae, which is the city’s only airport. Busan Gimhae (PUS) is located 7.2 mi from the center of Busan.

  • How long is the flight from Illinois to Busan?

    Airlines like Korean Air, Delta, and EVA Air fly from Illinois to Busan in about 21h 35m. The time it takes to get you to your destination can typically vary by up to 5h 35m. Airlines will cover a distance of 6740 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

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

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

See more FAQs

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