$546+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PUS
Mar 7 — Mar 141
1 adult, Economy
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Find cheap flights from Illinois to Busan with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Busan
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Cheapest flights from Illinois to BusanExplore 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 February 5, 2026.
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 February 5, 2026.
This oojo deal was found by Cheapflights users on 2/2. 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.
Sun 9/612:30 am
ORD
- PUS
1 stop27h 30m
EVA Air
Mon 9/147:10 pm
PUS
- ORD
1 stop39h 35m
EVA Air
Deal found 2/2![EVA Air logo]()
$954
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:42 pm
ORD
- PUS
2 stops24h 33m
Multiple Airlines
Tue 9/158:00 pm
PUS
- ORD
2 stops25h 00m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,024
This Jetabroad deal was found by Cheapflights users on 2/2. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:30 am
ORD
- PUS
1 stop27h 30m
Multiple Airlines
Mon 9/147:10 pm
PUS
- ORD
2 stops30h 58m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,047
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:00 pm
MDW
- PUS
2 stops24h 15m
Multiple Airlines
Tue 9/158:00 pm
PUS
- MDW
2 stops23h 05m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,190
This EVA Air deal was found by Cheapflights users on 2/4. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:30 pm
ORD
- PUS
1 stop27h 10m
EVA Air
Fri 11/66:55 pm
PUS
- ORD
2 stops38h 59m
EVA Air
Deal found 2/4![EVA Air logo]()
$1,231
This Korean Air deal was found by Cheapflights users on 2/2. 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.
Sun 2/157:10 am
STL
- PUS
2 stops45h 25m
Korean Air
Thu 2/197:55 am
PUS
- STL
2 stops30h 28m
Korean Air
Deal found 2/2![Korean Air logo]()
$1,247
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:55 pm
MDW
- PUS
2 stops22h 35m
Multiple Airlines
Mon 9/148:00 pm
PUS
- MDW
2 stops23h 50m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,288
This Travelocity deal was found by Cheapflights users on 2/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:56 pm
STL
- PUS
2 stops32h 04m
Multiple Airlines
Wed 6/37:10 pm
PUS
- STL
2 stops34h 40m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$1,301
This Gurufare deal was found by Cheapflights users on 2/2. 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 3/193:35 pm
ORD
- PUS
1 stop25h 20m
Cathay Pacific
Thu 3/262:05 pm
PUS
- ORD
1 stop37h 50m
Cathay Pacific
Deal found 2/2![Cathay Pacific logo]()
$1,315
This Delta deal was found by Cheapflights users on 2/3. 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 3/207:03 am
STL
- PUS
2 stops37h 47m
Delta
Fri 3/274:10 pm
PUS
- STL
2 stops30h 52m
Delta
Deal found 2/3![Delta logo]()
$1,372
This China Airlines deal was found by Cheapflights users on 2/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:40 pm
ORD
- PUS
2 stops23h 50m
Multiple Airlines
Thu 8/68:00 pm
PUS
- ORD
2 stops24h 20m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$1,385
This Expedia deal was found by Cheapflights users on 2/2. 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.
Thu 3/198:00 am
ORD
- PUS
2 stops34h 10m
Multiple Airlines
Thu 3/264:10 pm
PUS
- ORD
2 stops28h 29m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,403
Best flights from Illinois to BusanDiscover carefully curated flight deals from Illinois to Busan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 5, 2026.
Discover carefully curated flight deals from Illinois to Busan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 5, 2026.
This Korean Air deal was found by Cheapflights users on 2/2. 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.
Sun 2/157:10 am
STL
- PUS
2 stops45h 25m
Korean Air
Thu 2/197:55 am
PUS
- STL
2 stops30h 28m
Korean Air
Deal found 2/2![Korean Air logo]()
$1,247
This Travelocity deal was found by Cheapflights users on 2/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:56 pm
STL
- PUS
2 stops32h 04m
Multiple Airlines
Wed 6/37:10 pm
PUS
- STL
2 stops34h 40m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$1,301
This Gurufare deal was found by Cheapflights users on 2/2. 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 3/193:35 pm
ORD
- PUS
1 stop25h 20m
Cathay Pacific
Thu 3/262:05 pm
PUS
- ORD
1 stop37h 50m
Cathay Pacific
Deal found 2/2![Cathay Pacific logo]()
$1,315
This Delta deal was found by Cheapflights users on 2/3. 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 3/207:03 am
STL
- PUS
2 stops37h 47m
Delta
Fri 3/274:10 pm
PUS
- STL
2 stops30h 52m
Delta
Deal found 2/3![Delta logo]()
$1,372
This Gotogate deal was found by Cheapflights users on 2/3. 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.
Sun 8/212:30 am
ORD
- PUS
1 stop27h 30m
EVA Air
Thu 8/67:10 pm
PUS
- ORD
1 stop40h 00m
EVA Air
Deal found 2/3![EVA Air logo]()
$1,455
This China Airlines deal was found by Cheapflights users on 2/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:40 pm
ORD
- PUS
2 stops23h 50m
Multiple Airlines
Thu 8/68:00 pm
PUS
- ORD
2 stops24h 20m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$1,385
This Korean Air deal was found by Cheapflights users on 2/3. 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 2/196:10 am
STL
- PUS
2 stops22h 25m
Korean Air
Mon 2/237:55 am
PUS
- STL
2 stops30h 28m
Korean Air
Deal found 2/3![Korean Air logo]()
$1,420
This Expedia deal was found by Cheapflights users on 2/2. 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.
Thu 3/198:00 am
ORD
- PUS
2 stops34h 10m
Multiple Airlines
Thu 3/264:10 pm
PUS
- ORD
2 stops28h 29m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,403
This Gotogate deal was found by Cheapflights users on 2/3. 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.
Tue 5/2612:30 am
ORD
- PUS
1 stop27h 30m
EVA Air
Wed 7/157:10 pm
PUS
- ORD
1 stop40h 00m
EVA Air
Deal found 2/3![EVA Air logo]()
$1,661
This Delta deal was found by Cheapflights users on 2/4. 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 3/211:00 pm
STL
- PUS
2 stops41h 45m
Delta
Sat 3/2810:25 am
PUS
- STL
2 stops45h 28m
Delta
Deal found 2/4![Delta logo]()
$1,700
This Delta deal was found by Cheapflights users on 2/2. 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 3/196:00 am
MDW
- PUS
2 stops24h 45m
Delta
Thu 3/267:00 am
PUS
- MDW
2 stops24h 54m
Delta
Deal found 2/2![Delta logo]()
$1,787
This Expedia deal was found by Cheapflights users on 2/4. 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 3/226:00 am
ORD
- PUS
2 stops38h 50m
Multiple Airlines
Sun 3/297:00 am
PUS
- ORD
2 stops36h 15m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$1,654
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:45 pm
ORD
- PUS
2 stops23h 45m
Multiple Airlines
Tue 7/148:00 pm
PUS
- ORD
2 stops24h 20m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,664
This Delta deal was found by Cheapflights users on 2/4. 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.
Sun 3/229:35 am
MDW
- PUS
2 stops32h 35m
Delta
Sun 3/297:00 am
PUS
- MDW
2 stops24h 22m
Delta
Deal found 2/4![Delta logo]()
$1,996
This Korean Air deal was found by Cheapflights users on 2/3. 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 6/69:23 am
MDW
- PUS
2 stops21h 22m
Korean Air
Sun 6/147:00 am
PUS
- MDW
2 stops19h 30m
Korean Air
Deal found 2/3![Korean Air logo]()
$2,775
This Korean Air deal was found by Cheapflights users on 2/3. 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 6/69:23 am
MDW
- PUS
2 stops20h 12m
Korean Air
Fri 6/128:00 am
PUS
- MDW
2 stops18h 30m
Korean Air
Deal found 2/3![Korean Air logo]()
$2,890
This Delta deal was found by Cheapflights users on 2/3. 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.
Sun 6/76:00 am
MDW
- PUS
2 stops23h 35m
Delta
Sun 6/148:00 am
PUS
- MDW
2 stops18h 30m
Delta
Deal found 2/3![Delta logo]()
$2,655
This Delta deal was found by Cheapflights users on 2/3. 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 6/66:30 am
MDW
- PUS
2 stops24h 15m
Delta
Sat 6/137:00 am
PUS
- MDW
2 stops19h 30m
Delta
Deal found 2/3![Delta logo]()
$2,655
This Mytrip deal was found by Cheapflights users on 2/3. 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 3/204:05 pm
STL
- PUS
3 stops35h 35m
Multiple Airlines
Fri 3/2711:05 am
PUS
- STL
2 stops42h 24m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$3,091
Last-minute flights from Illinois to BusanDiscover last-minute flight deals from Illinois to Busan. Data last updated February 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Busan. Data last updated February 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Sat 2/710:30 am
ORD
- PUS
1 stop35h 30m
Multiple Airlines
Mon 2/99:30 pm
PUS
- ORD
2 stops37h 05m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$1,645
This China Airlines deal was found by Cheapflights users on 2/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/73:00 pm
MDW
- PUS
2 stops28h 50m
Multiple Airlines
Mon 2/97:50 pm
PUS
- MDW
2 stops24h 25m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$2,519
This EVA Air deal was found by Cheapflights users on 2/4. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1111:30 pm
ORD
- PUS
1 stop27h 10m
EVA Air
Sat 2/146:55 pm
PUS
- ORD
1 stop39h 40m
EVA Air
Deal found 2/4![EVA Air logo]()
$1,663
This Korean Air deal was found by Cheapflights users on 2/2. 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.
Sun 2/157:10 am
STL
- PUS
2 stops45h 25m
Korean Air
Thu 2/197:55 am
PUS
- STL
2 stops30h 28m
Korean Air
Deal found 2/2![Korean Air logo]()
$1,247
This Korean Air deal was found by Cheapflights users on 2/3. 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 2/196:10 am
STL
- PUS
2 stops22h 25m
Korean Air
Mon 2/237:55 am
PUS
- STL
2 stops30h 28m
Korean Air
Deal found 2/3![Korean Air logo]()
$1,420
This Gurufare deal was found by Cheapflights users on 2/2. 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 3/193:35 pm
ORD
- PUS
1 stop25h 20m
Cathay Pacific
Thu 3/262:05 pm
PUS
- ORD
1 stop37h 50m
Cathay Pacific
Deal found 2/2![Cathay Pacific logo]()
$1,315
This Expedia deal was found by Cheapflights users on 2/2. 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.
Thu 3/198:00 am
ORD
- PUS
2 stops34h 10m
Multiple Airlines
Thu 3/264:10 pm
PUS
- ORD
2 stops28h 29m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,403
This Delta deal was found by Cheapflights users on 2/2. 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 3/196:00 am
MDW
- PUS
2 stops24h 45m
Delta
Thu 3/267:00 am
PUS
- MDW
2 stops24h 54m
Delta
Deal found 2/2![Delta logo]()
$1,787
This Delta deal was found by Cheapflights users on 2/3. 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 3/207:03 am
STL
- PUS
2 stops37h 47m
Delta
Fri 3/274:10 pm
PUS
- STL
2 stops30h 52m
Delta
Deal found 2/3![Delta logo]()
$1,372
This Delta deal was found by Cheapflights users on 2/4. 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 3/211:00 pm
STL
- PUS
2 stops41h 45m
Delta
Sat 3/2810:25 am
PUS
- STL
2 stops45h 28m
Delta
Deal found 2/4![Delta logo]()
$1,700
This Expedia deal was found by Cheapflights users on 2/4. 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 3/226:00 am
ORD
- PUS
2 stops38h 50m
Multiple Airlines
Sun 3/297:00 am
PUS
- ORD
2 stops36h 15m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$1,654
This Delta deal was found by Cheapflights users on 2/4. 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.
Sun 3/229:35 am
MDW
- PUS
2 stops32h 35m
Delta
Sun 3/297:00 am
PUS
- MDW
2 stops24h 22m
Delta
Deal found 2/4![Delta logo]()
$1,996
One-way flights from Illinois to BusanSearch for one-way flight options from Illinois to Busan. Find affordable one-way fares based on user searches. Data last updated February 5, 2026.
Search for one-way flight options from Illinois to Busan. Find affordable one-way fares based on user searches. Data last updated February 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 5/117:21 pm
ORD
- PUS
3 stops59h 44m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Wed 5/136:31 am
ORD
- PUS
2 stops48h 04m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$576
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Wed 5/137:30 am
MDW
- PUS
2 stops47h 05m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$576
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Tue 2/177:00 am
ORD
- PUS
3 stops57h 20m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$610
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Sun 3/152:10 pm
ORD
- PUS
3 stops50h 45m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$613
This Booking.com deal was found by Cheapflights users on 2/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1412:30 am
ORD
- PUS
1 stop27h 10m
EVA Air
Deal found 2/3![EVA Air logo]()
$808
This SmartFares deal was found by Cheapflights users on 2/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:30 am
ORD
- PUS
1 stop27h 30m
EVA Air
Deal found 2/4![EVA Air logo]()
$815
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sun 5/1012:30 am
ORD
- PUS
1 stop27h 30m
EVA Air
Deal found 2/2![EVA Air logo]()
$846
This China Airlines deal was found by Cheapflights users on 2/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:05 am
MDW
- PUS
2 stops34h 45m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$871
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Wed 2/112:50 pm
STL
- PUS
3 stops59h 00m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$10,284
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 February 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,247 (Korean Air) |
One-way from | $546 (Kiwi.com) |
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 February 5, 2026.
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
Sun 2/15
7:10 am-7:35 pm
2 stops45h 25m
Busan Gimhae
Thu 2/19
7:55 am-11:23 pm
2 stops30h 28m
$1,247
St. LouisBusan
STL - PUS
STLPUS
Lambert-St Louis
Mon 5/18
7:56 pm-6:00 pm
2 stops32h 04m
Busan Gimhae
Wed 6/3
7:10 pm-3:50 pm
2 stops34h 40m
$1,301
ChicagoBusan
ORD - PUS
ORDPUS
Chicago O'Hare Intl
Thu 3/19
3:35 pm-6:55 am
1 stop25h 20m
Busan Gimhae
Thu 3/26
2:05 pm-1:55 pm
1 stop37h 50m
$1,315
St. LouisBusan
STL - PUS
STLPUS
Lambert-St Louis
Fri 3/20
7:03 am-10:50 am
2 stops37h 47m
Busan Gimhae
Fri 3/27
4:10 pm-9:02 am
2 stops30h 52m
$1,372
ChicagoBusan
ORD - PUS
ORDPUS
Chicago O'Hare Intl
Mon 8/3
7:40 pm-9:30 am
2 stops23h 50m
Busan Gimhae
Thu 8/6
8:00 pm-6:20 am
2 stops24h 20m
$1,385
ChicagoBusan
ORD - PUS
ORDPUS
Chicago O'Hare Intl
Thu 3/19
8:00 am-8:10 am
2 stops34h 10m
Busan Gimhae
Thu 3/26
4:10 pm-6:39 am
2 stops28h 29m
$1,403
St. LouisBusan
STL - PUS
STLPUS
Lambert-St Louis
Thu 2/19
6:10 am-7:35 pm
2 stops22h 25m
Busan Gimhae
Mon 2/23
7:55 am-11:23 pm
2 stops30h 28m
$1,420
ChicagoBusan
ORD - PUS
ORDPUS
Chicago O'Hare Intl
Sun 8/2
12:30 am-6:00 pm
1 stop27h 30m
Busan Gimhae
Thu 8/6
7:10 pm-9:10 pm
1 stop40h 00m
$1,455
ChicagoBusan
ORD - PUS
ORDPUS
Chicago O'Hare Intl
Sun 3/22
6:00 am-10:50 am
2 stops38h 50m
Busan Gimhae
Sun 3/29
7:00 am-5:15 am
2 stops36h 15m
$1,654
ChicagoBusan
ORD - PUS
ORDPUS
Chicago O'Hare Intl
Tue 5/26
12:30 am-6:00 pm
1 stop27h 30m
Busan Gimhae
Wed 7/15
7:10 pm-9:10 pm
1 stop40h 00m
$1,661
Showing 1-10 of 28 results
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.
ORD-PUS
MDW-PUS
STL-PUS
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
USIL-PUS
ORD-PUS
MDW-PUS
STL-PUS
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.
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Alternative routes for Illinois to Busan
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Other flights to Busan
Explore flights to Busan departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 5, 2026.
Complete your trip
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Illinois and Busan flights
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Illinois to Busan flights
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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 February 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,708 | Average$1,782 | FlexibilityNo cancel fee | On-time81% |