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Cheap flights from Illinois to Busan from $495

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Busan departing on 3/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Busan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
6:00 am - 8:45 pmSTL-PUS
23h 45m2 stops
Korean Air Logo
4:10 pm - 11:25 pmPUS-STL
22h 15m2 stops
$1,222Korean Air
Find Deal
Thu, Feb 26 - Mon, Mar 2
EVA Air Logo
11:30 pm - 5:40 pmORD-PUS
27h 10m1 stop
EVA Air Logo
6:55 pm - 5:02 pmPUS-ORD
37h 07m2 stops
$1,750EVA Air
Find Deal
Sat, Dec 27 - Tue, Jan 13
EVA Air Logo
11:30 pm - 5:40 pmORD-PUS
27h 10m1 stop
EVA Air Logo
6:55 pm - 7:35 pmPUS-ORD
39h 40m1 stop
$1,766EVA Air
Find Deal
Sat, Dec 27 - Tue, Jan 13
EVA Air Logo
11:30 pm - 5:40 pmORD-PUS
27h 10m1 stop
EVA Air Logo
6:55 pm - 7:35 pmPUS-ORD
39h 40m1 stop
$1,813EVA Air
Find Deal
Sat, Dec 27 - Tue, Jan 13
Multiple Airlines Logo
11:45 am - 11:50 amORD-PUS
33h 05m3 stops
Multiple Airlines Logo
9:50 pm - 6:05 amPUS-ORD
47h 15m3 stops
$1,987Multiple Airlines
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Thu, Dec 18 - Thu, Dec 25
Multiple Airlines Logo
11:45 am - 11:50 amORD-PUS
33h 05m3 stops
Multiple Airlines Logo
3:00 pm - 6:05 amPUS-ORD
30h 05m3 stops
$2,050Multiple Airlines
Find Deal
Thu, Dec 18 - Thu, Dec 25
EVA Air Logo
3:46 pm - 5:40 pmORD-PUS
34h 54m2 stops
EVA Air Logo
6:55 pm - 7:35 pmPUS-ORD
39h 40m1 stop
$2,084EVA Air
Find Deal
Wed, Dec 17 - Wed, Dec 24
Multiple Airlines Logo
8:15 pm - 7:55 pmORD-PUS
32h 40m2 stops
Multiple Airlines Logo
1:25 pm - 9:13 amPUS-ORD
34h 48m3 stops
$2,097Multiple Airlines
Find Deal
Wed, Dec 17 - Wed, Dec 24
Delta Logo
6:00 am - 7:35 pmORD-PUS
22h 35m2 stops
Delta Logo
7:55 am - 9:52 pmPUS-ORD
28h 57m2 stops
$2,106Delta
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Sat, Dec 27 - Tue, Jan 13
Delta Logo
6:00 am - 8:45 pmMDW-PUS
23h 45m2 stops
Delta Logo
12:00 pm - 10:22 pmPUS-MDW
25h 22m2 stops
$2,771Delta
Find Deal
Wed, Dec 17 - Wed, Dec 24

EVA Air flights from Illinois to Busan

Our best EVA Air deals on Illinois to Busan flight tickets
EVA Air
Dec 27
ORD11:30 pmChicago O'Hare Intl
27h 10m
1 stop
PUS5:40 pmBusan Gimhae
Jan 13
PUS6:55 pmBusan Gimhae
37h 07m
2 stops
ORD5:02 pmChicago O'Hare Intl
$1,750
Find similar
EVA Air
Dec 27
ORD11:30 pmChicago O'Hare Intl
27h 10m
1 stop
PUS5:40 pmBusan Gimhae
Jan 13
PUS6:55 pmBusan Gimhae
39h 40m
1 stop
ORD7:35 pmChicago O'Hare Intl
$1,766
Find similar
EVA Air
Dec 27
ORD11:30 pmChicago O'Hare Intl
27h 10m
1 stop
PUS5:40 pmBusan Gimhae
Jan 13
PUS6:55 pmBusan Gimhae
39h 40m
1 stop
ORD7:35 pmChicago O'Hare Intl
$1,813
Find similar

Delta flights from Illinois to Busan

Our best Delta deals on Illinois to Busan flight tickets
Delta
Dec 27
ORD6:00 amChicago O'Hare Intl
22h 35m
2 stops
PUS7:35 pmBusan Gimhae
Jan 13
PUS7:55 amBusan Gimhae
28h 57m
2 stops
ORD9:52 pmChicago O'Hare Intl
$2,106
Find similar
Delta
Dec 17
MDW6:00 amChicago Midway
23h 45m
2 stops
PUS8:45 pmBusan Gimhae
Dec 24
PUS12:00 pmBusan Gimhae
25h 22m
2 stops
MDW10:22 pmChicago Midway
$2,771
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 4, 2025.
Use the filters below to find and compare flights from Illinois to Busan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Thu 2/26

6:00 am-8:45 pm

2 stops23h 45m

Busan Gimhae

Mon 3/2

4:10 pm-11:25 pm

2 stops22h 15m

$1,222

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

$1,750

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-7:35 pm

1 stop39h 40m

$1,766

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-7:35 pm

1 stop39h 40m

$1,813

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Thu 12/18

11:45 am-11:50 am

3 stops33h 05m

Busan Gimhae

Thu 12/25

9:50 pm-6:05 am

3 stops47h 15m

$1,987

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Thu 12/18

11:45 am-11:50 am

3 stops33h 05m

Busan Gimhae

Thu 12/25

3:00 pm-6:05 am

3 stops30h 05m

$2,050

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Wed 12/17

3:46 pm-5:40 pm

2 stops34h 54m

Busan Gimhae

Wed 12/24

6:55 pm-7:35 pm

1 stop39h 40m

$2,084

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Wed 12/17

8:15 pm-7:55 pm

2 stops32h 40m

Busan Gimhae

Wed 12/24

1:25 pm-9:13 am

3 stops34h 48m

$2,097

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sat 12/27

6:00 am-7:35 pm

2 stops22h 35m

Busan Gimhae

Tue 1/13

7:55 am-9:52 pm

2 stops28h 57m

$2,106

ChicagoBusan

MDW - PUS

MDWPUS

Chicago Midway

Wed 12/17

6:00 am-8:45 pm

2 stops23h 45m

Busan Gimhae

Wed 12/24

12:00 pm-10:22 pm

2 stops25h 22m

$2,771

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Busan from

How to get the cheapest flight ticket from Illinois to Busan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Busan?

Our data shows that Thursday is the least expensive day to fly to Busan. Tickets to fly out on this day can be as low as $1,908. Flights from Illinois to Busan on a Monday will generally be more expensive and average around $3,569. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Can stopping save me money on Illinois to Busan flights?

You could potentially save up to 10% on your flight if you consider stops on a Illinois to Busan flight.

Cheap Illinois to Busan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Busan

Direct flights

None
There are no direct flights from Illinois to Busan. There are no popular flight routes from Illinois to Busan.
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  • When did momondo last update prices for flights from Illinois to Busan Gimhae Airport?

    Prices for flights from Illinois to Busan Gimhae Airport are updated daily.

  • How many operators does momondo search for flights from Illinois to Busan Gimhae Airport?

  • How old do you have to be to fly from Illinois to Busan Gimhae Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Busan Gimhae Airport.

  • What documentation or ID do you need to fly to Busan Gimhae Airport?

    The required travel and health documents for your Busan Gimhae Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Busan Gimhae Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Busan

Compare and see reviews for airlines that fly from Illinois to Busan with momondo
Airline
Rating
Free Cancellation
Price
Korean AirPriceFrom $1,708Free CancellationRating
8.4
1,160 reviews
Search Korean Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Busan?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Busan. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Busan with flexible booking policies on momondo?

Yes. All flights to Busan from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Busan?

Once you have performed a search for Illinois to Busan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to Busan right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Busan from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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