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Cheap flights from Illinois to Busan from $425

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 10/1. 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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Cheap round-trip flights

China Airlines Logo
6:00 am - 6:50 pmORD-PUS
46h 50m2 stops
China Airlines Logo
11:50 am - 6:22 amPUS-ORD
32h 32m2 stops
$1,095China Airlines
Find Deal
Mon, Oct 27 - Thu, Oct 30
EVA Air Logo
12:30 am - 5:40 pmORD-PUS
27h 10m1 stop
EVA Air Logo
6:55 pm - 8:35 pmPUS-ORD
39h 40m1 stop
$1,119EVA Air
Find Deal
Sun, Oct 26 - Thu, Oct 30
EVA Air Logo
12:30 am - 5:40 pmORD-PUS
27h 10m1 stop
EVA Air Logo
6:55 pm - 6:22 amPUS-ORD
25h 27m2 stops
$1,142EVA Air
Find Deal
Sun, Oct 26 - Thu, Oct 30
Cathay Pacific Logo
4:00 pm - 1:35 pmORD-PUS
31h 35m1 stop
Cathay Pacific Logo
2:05 pm - 1:00 pmPUS-ORD
37h 55m1 stop
$1,158Cathay Pacific
Find Deal
Mon, Sep 1 - Sun, Nov 30
Cathay Pacific Logo
4:00 pm - 7:00 amORD-PUS
25h 00m1 stop
Cathay Pacific Logo
2:05 pm - 1:00 pmPUS-ORD
37h 55m1 stop
$1,266Cathay Pacific
Find Deal
Mon, Sep 1 - Sun, Nov 30
Logo
11:30 pm - 5:40 pmORD-PUS
27h 10m1 stop
Logo
7:40 am - 7:35 pmPUS-ORD
26h 55m2 stops
$1,383
Find Deal
Tue, Nov 11 - Wed, Nov 26
Logo
11:50 am - 4:35 pmORD-PUS
38h 45m1 stop
Logo
8:20 am - 11:00 pmPUS-ORD
29h 40m2 stops
$1,394
Find Deal
Wed, Oct 15 - Sat, Nov 15
Korean Air Logo
7:20 am - 8:45 pmSTL-PUS
22h 25m2 stops
Korean Air Logo
4:10 pm - 11:39 pmPUS-STL
22h 29m2 stops
$1,526Korean Air
Find Deal
Sun, Nov 23 - Sun, Dec 28
Delta Logo
6:00 pm - 7:45 amORD-PUS
23h 45m2 stops
Delta Logo
12:00 pm - 8:30 amPUS-ORD
35h 30m1 stop
$1,712Delta
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Mon, Sep 1 - Sun, Nov 30
Korean Air Logo
9:20 am - 7:35 pmMDW-PUS
20h 15m2 stops
Korean Air Logo
7:00 am - 12:28 pmPUS-MDW
19h 28m2 stops
$1,917Korean Air
Find Deal
Wed, Oct 1 - Wed, Oct 8

Cathay Pacific flights from Illinois to Busan

Our best Cathay Pacific deals on Illinois to Busan flight tickets
Cathay Pacific
Sep 1
ORD4:00 pmChicago O'Hare Intl
31h 35m
1 stop
PUS1:35 pmBusan Gimhae
Nov 30
PUS2:05 pmBusan Gimhae
37h 55m
1 stop
ORD1:00 pmChicago O'Hare Intl
$1,158
Find similar
Cathay Pacific
Sep 1
ORD4:00 pmChicago O'Hare Intl
25h 00m
1 stop
PUS7:00 amBusan Gimhae
Nov 30
PUS2:05 pmBusan Gimhae
37h 55m
1 stop
ORD1:00 pmChicago O'Hare Intl
$1,266
Find similar
Cathay Pacific
Nov 12
ORD2:40 pmChicago O'Hare Intl
31h 25m
1 stop
PUS1:05 pmBusan Gimhae
Nov 26
PUS7:40 amBusan Gimhae
20h 20m
1 stop
ORD1:00 pmChicago O'Hare Intl
$1,279
Find similar

China Airlines flights from Illinois to Busan

Our best China Airlines deals on Illinois to Busan flight tickets
China Airlines
Oct 27
ORD6:00 amChicago O'Hare Intl
46h 50m
2 stops
PUS6:50 pmBusan Gimhae
Oct 30
PUS11:50 amBusan Gimhae
32h 32m
2 stops
ORD6:22 amChicago O'Hare Intl
$1,095
Find similar
China Airlines
Sep 1
ORD6:20 amChicago O'Hare Intl
38h 55m
2 stops
PUS11:15 amBusan Gimhae
Nov 30
PUS10:10 amBusan Gimhae
35h 18m
2 stops
ORD6:28 amChicago O'Hare Intl
$1,453
Find similar
China Airlines
Sep 1
ORD8:00 amChicago O'Hare Intl
45h 00m
2 stops
PUS7:00 pmBusan Gimhae
Nov 30
PUS11:50 amBusan Gimhae
33h 38m
2 stops
ORD6:28 amChicago O'Hare Intl
$1,476
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 August 17, 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

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Mon 10/27

6:00 am-6:50 pm

2 stops46h 50m

Busan Gimhae

Thu 10/30

11:50 am-6:22 am

2 stops32h 32m

$1,095

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sun 10/26

12:30 am-5:40 pm

1 stop27h 10m

Busan Gimhae

Thu 10/30

6:55 pm-8:35 pm

1 stop39h 40m

$1,119

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Sun 10/26

12:30 am-5:40 pm

1 stop27h 10m

Busan Gimhae

Thu 10/30

6:55 pm-6:22 am

2 stops25h 27m

$1,142

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Mon 9/1

4:00 pm-1:35 pm

1 stop31h 35m

Busan Gimhae

Sun 11/30

2:05 pm-1:00 pm

1 stop37h 55m

$1,158

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Mon 9/1

4:00 pm-7:00 am

1 stop25h 00m

Busan Gimhae

Sun 11/30

2:05 pm-1:00 pm

1 stop37h 55m

$1,266

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Tue 11/11

11:30 pm-5:40 pm

1 stop27h 10m

Busan Gimhae

Wed 11/26

7:40 am-7:35 pm

2 stops26h 55m

$1,383

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Wed 10/15

11:50 am-4:35 pm

1 stop38h 45m

Busan Gimhae

Sat 11/15

8:20 am-11:00 pm

2 stops29h 40m

$1,394

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Sun 11/23

7:20 am-8:45 pm

2 stops22h 25m

Busan Gimhae

Sun 12/28

4:10 pm-11:39 pm

2 stops22h 29m

$1,526

ChicagoBusan

ORD - PUS

ORDPUS

Chicago O'Hare Intl

Mon 9/1

6:00 pm-7:45 am

2 stops23h 45m

Busan Gimhae

Sun 11/30

12:00 pm-8:30 am

1 stop35h 30m

$1,712

ChicagoBusan

MDW - PUS

MDWPUS

Chicago Midway

Wed 10/1

9:20 am-7:35 pm

2 stops20h 15m

Busan Gimhae

Wed 10/8

7:00 am-12:28 pm

2 stops19h 28m

$1,917

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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.

Cheap Illinois to Busan flight deals and tips

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

Best Price Found

$425

Fastest flight time

20h 15m

Direct flights

None

Airports in Busan

1 airport
The best one-way flight to Busan from Illinois in the past 72 hours is $425. The best round-trip flight deal from Illinois to Busan found on momondo in the last 72 hours is $1,095.
The fastest flight from Illinois to Busan takes 20h 15m
There are no direct flights from Illinois to Busan. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Busan Gimhae Airport, Chicago Midway Airport - Busan Gimhae Airport and Lambert-St Louis Airport - Busan Gimhae Airport.
There is 1 airport near Busan: Busan Gimhae (PUS)
Search flight deals

  • 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 $1,782Free CancellationRating
8.4
1,131 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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