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$526+ Cheap flights from Busan (PUS) to Illinois

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
PUS — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$1,008
(Trip.com)

One-way from

$526
(Kiwi.com)
From Busan Gimhae to Illinois
Search Deals
One-way flight from Busan Gimhae to Illinois
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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 June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1010:40 amPUS - ORD
2 stops27h 19mMultiple Airlines
Tue 7/226:00 amORD - PUS
2 stops24h 45mMultiple Airlines
Deal found 6/12$1,008
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 7/1610:40 amPUS - STL
2 stops32h 14mMultiple Airlines
Wed 7/235:41 pmSTL - PUS
2 stops25h 49mMultiple Airlines
Deal found 6/10$1,100
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/162:15 pmPUS - ORD
1 stop33h 15mKorean Air
Fri 10/3112:05 pmORD - PUS
1 stop31h 00mKorean Air
Deal found 6/11$1,304
This Delta deal was found by Cheapflights users on 6/12. 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 12/134:10 pmPUS - ORD
1 stop31h 20mDelta
Tue 12/237:20 amORD - PUS
2 stops22h 25mDelta
Deal found 6/12$1,363
This Delta deal was found by Cheapflights users on 6/12. 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 7/84:30 pmPUS - MDW
2 stops30h 15mDelta
Tue 7/159:24 amMDW - PUS
2 stops20h 11mDelta
Deal found 6/12$1,450
This Air France deal was found by Cheapflights users on 6/9. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/74:30 pmPUS - ORD
2 stops36h 10mKLM
Thu 9/114:20 pmORD - PUS
2 stops37h 15mKLM
Deal found 6/9$1,545
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 7/210:40 amPUS - STL
2 stops35h 59mDelta
Sun 7/137:15 pmSTL - PUS
2 stops33h 05mDelta
Deal found 6/11$1,584
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/287:45 amPUS - ORD
1 stop20h 40mCathay Pacific
Mon 6/304:00 pmORD - PUS
1 stop25h 00mCathay Pacific
Deal found 6/10$1,606
This Korean Air deal was found by Cheapflights users on 6/9. 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.
Fri 7/254:30 pmPUS - STL
2 stops22h 08mKorean Air
Fri 8/111:18 amSTL - PUS
2 stops19h 27mKorean Air
Deal found 6/9$1,865
This Korean Air deal was found by Cheapflights users on 6/10. 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.
Thu 7/107:00 amPUS - MDW
2 stops19h 29mKorean Air
Fri 7/189:24 amMDW - PUS
2 stops32h 21mKorean Air
Deal found 6/10$1,881
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Sun 7/1311:00 amPUS - MDW
3 stops44h 39mMultiple Airlines
Thu 7/171:46 pmMDW - PUS
3 stops31h 49mMultiple Airlines
Deal found 6/10$2,797

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 June 12, 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

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Thu 7/10

10:40 am-11:59 pm

2 stops27h 19m

Chicago O'Hare Intl

Tue 7/22

6:00 am-8:45 pm

2 stops24h 45m

$1,008

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Wed 7/16

10:40 am-4:54 am

2 stops32h 14m

Lambert-St Louis

Wed 7/23

5:41 pm-9:30 am

2 stops25h 49m

$1,100

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Thu 10/16

2:15 pm-9:30 am

1 stop33h 15m

Chicago O'Hare Intl

Fri 10/31

12:05 pm-9:05 am

1 stop31h 00m

$1,304

BusanChicago

PUS - MDW

PUSMDW

Busan Gimhae

Tue 7/8

4:30 pm-8:45 am

2 stops30h 15m

Chicago Midway

Tue 7/15

9:24 am-7:35 pm

2 stops20h 11m

$1,450

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Tue 7/1

10:40 am-10:09 pm

2 stops25h 29m

Chicago O'Hare Intl

Tue 7/15

7:50 am-7:35 pm

2 stops21h 45m

$1,456

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Sun 9/7

4:30 pm-2:40 pm

2 stops36h 10m

Chicago O'Hare Intl

Thu 9/11

4:20 pm-7:35 pm

2 stops37h 15m

$1,545

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Wed 7/2

7:00 am-12:43 am

2 stops31h 43m

Lambert-St Louis

Sun 7/13

8:50 am-8:45 pm

2 stops21h 55m

$1,584

BusanChicago

PUS - ORD

PUSORD

Busan Gimhae

Sat 6/28

7:45 am-2:25 pm

1 stop20h 40m

Chicago O'Hare Intl

Mon 6/30

4:00 pm-7:00 am

1 stop25h 00m

$1,606

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Fri 7/25

4:30 pm-12:38 am

2 stops22h 08m

Lambert-St Louis

Fri 8/1

11:18 am-8:45 pm

2 stops19h 27m

$1,865

BusanChicago

PUS - MDW

PUSMDW

Busan Gimhae

Thu 7/10

7:00 am-12:29 pm

2 stops19h 29m

Chicago Midway

Fri 7/18

9:24 am-7:45 am

2 stops32h 21m

$1,881

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 22 results
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2
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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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Korean Air, Japan Airlines and Asiana Airlines from Busan to Illinois to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Japan Airlines
8.3
Very good
1,490 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Asiana Airlines
8.2
Very good
440 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Delta
8.0
Very good
7,946 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
KLM
7.8
Good
1,358 reviews
Korean Air
8.4
Very good
1,088 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Food

8.1

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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.

  • What are the cheapest airlines to fly from Busan to Illinois one-way?

    To fly one-way, consider booking your trip with Asiana Airlines, which is currently one of the cheapest options available, starting at $1,095. MIAT Mongolian flights start at $1,141 while deals on Cathay Pacific start at $1,144 one-way.

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

    The most popular route from Busan to Illinois is Busan Gimhae - Chicago O'Hare Intl. You may also consider Busan Gimhae - Chicago Midway 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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Alternative routes for Busan to Illinois

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