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Busan

$856+ 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 12/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PUS
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This oojo deal was found by Cheapflights users on 12/15. 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 oojo 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
1 stop39h 40mEVA Air
Deal found 12/15$1,661
This Delta deal was found by Cheapflights users on 12/13. 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.
Sat 12/276:00 amORD - PUS
2 stops22h 35mDelta
Tue 1/1312:00 pmPUS - ORD
2 stops26h 53mDelta
Deal found 12/13$2,254
This Air Canada deal was found by Cheapflights users on 12/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:30 pmORD - PUS
2 stops44h 40mMultiple Airlines
Tue 1/1312:00 pmPUS - ORD
2 stops41h 41mMultiple Airlines
Deal found 12/15$2,367
This Korean Air deal was found by Cheapflights users on 12/13. 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.
Sat 12/2711:15 amORD - PUS
1 stop29h 55mKorean Air
Tue 1/137:55 amPUS - ORD
1 stop15h 45mKorean Air
Deal found 12/13$2,483
This Expedia deal was found by Cheapflights users on 12/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:50 pmORD - PUS
2 stops30h 55mMultiple Airlines
Sun 12/217:20 amPUS - ORD
2 stops48h 00mMultiple Airlines
Deal found 12/13$20,118

Find flight deals from Illinois to Busan

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$1,102
(Cathay Pacific)

One-way from

$856
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-Busan Gimhae flight deals.
Search Deals
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
Search Deals

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 December 15, 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

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Wed 1/28

2:35 pm-1:05 pm

1 stop31h 30m

Busan Gimhae

Sun 2/1

4:25 pm-12:55 pm

1 stop35h 30m

$1,102

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Sun 2/15

6:10 am-7:35 pm

2 stops22h 25m

Busan Gimhae

Thu 2/19

4:10 pm-11:23 pm

2 stops22h 13m

$1,119

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Tue 1/13

11:30 pm-5:40 pm

1 stop27h 10m

Busan Gimhae

Tue 1/20

6:55 pm-7:35 pm

1 stop39h 40m

$1,131

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Tue 1/13

6:06 pm-10:50 am

2 stops25h 44m

Busan Gimhae

Tue 1/20

7:50 pm-2:38 pm

2 stops33h 48m

$1,195

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Tue 1/27

3:35 pm-11:50 am

2 stops29h 15m

Busan Gimhae

Tue 2/3

12:55 pm-2:38 pm

2 stops40h 43m

$1,198

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sun 3/8

3:54 pm-10:50 am

2 stops28h 56m

Busan Gimhae

Tue 3/10

7:50 pm-2:11 pm

2 stops32h 21m

$1,231

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Tue 1/27

2:35 pm-1:20 pm

1 stop31h 45m

Busan Gimhae

Tue 2/3

2:05 pm-12:55 pm

1 stop37h 50m

$1,240

ChicagoBusan

MDW - PUS

MDWPUS

Chicago Midway

Tue 1/13

5:31 pm-8:10 am

2 stops23h 39m

Busan Gimhae

Tue 1/20

7:00 am-12:51 pm

2 stops20h 51m

$3,165

ChicagoBusan

MDW - PUS

MDWPUS

Chicago Midway

Tue 1/27

6:00 am-7:35 pm

2 stops22h 35m

Busan Gimhae

Tue 2/3

7:00 am-12:46 pm

2 stops20h 46m

$3,448

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sun 12/28

11:30 pm-6:50 am

2 stops40h 20m

$856

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 13 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 Cathay Pacific, Korean Air, and EVA Air fly from Illinois to Busan in about 22h 25m. The time it takes to get you to your destination can typically vary by up to 9h 05m. 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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Alternative routes for Illinois to Busan

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Top airline flying from Illinois to Busan

Discover the top airline that operate flights from Illinois to Busan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$1,708Average$1,782FlexibilityNo cancel feeOn-time81%

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