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Cheap flights from Illinois to Seoul from $643

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 Seoul departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Illinois to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Japan Airlines Logo
10:15 am - 9:15 pm
ORD
-
GMP
21h 00m
1 stop
Japan Airlines Logo
8:00 am - 10:45 am
GMP
-
ORD
16h 45m
1 stop
$1,209Japan Airlines
Mon, Sep 21 - Wed, Sep 30
Japan Airlines Logo
6:59 am - 9:15 pm
ORD
-
GMP
24h 16m
2 stops
Japan Airlines Logo
8:00 am - 11:30 pm
GMP
-
ORD
29h 30m
2 stops
$1,231Japan Airlines
Sat, Aug 29 - Mon, Sep 7
Japan Airlines Logo
9:00 am - 9:15 pm
ORD
-
GMP
22h 15m
2 stops
Japan Airlines Logo
12:05 pm - 12:30 am
GMP
-
ORD
26h 25m
2 stops
$1,240Japan Airlines
Sun, Aug 30 - Thu, Sep 10
EVA Air Logo
12:30 am - 6:10 pm
ORD
-
GMP
27h 40m
1 stop
EVA Air Logo
7:00 pm - 7:35 pm
GMP
-
ORD
39h 35m
1 stop
$1,241EVA Air
Sun, Sep 27 - Tue, Nov 3
Japan Airlines Logo
2:30 pm - 9:15 pm
ORD
-
GMP
16h 45m
1 stop
Japan Airlines Logo
8:00 am - 10:45 am
GMP
-
ORD
16h 45m
1 stop
$1,247Japan Airlines
Fri, Aug 21 - Wed, Sep 2
Japan Airlines Logo
2:30 pm - 9:15 pm
ORD
-
GMP
16h 45m
1 stop
Japan Airlines Logo
8:00 am - 10:45 am
GMP
-
ORD
16h 45m
1 stop
$1,256Japan Airlines
Thu, Aug 20 - Wed, Sep 2
Japan Airlines Logo
10:40 am - 9:15 pm
ORD
-
GMP
20h 35m
1 stop
Japan Airlines Logo
8:00 am - 11:00 am
GMP
-
ORD
17h 00m
1 stop
$1,257Japan Airlines
Fri, Aug 14 - Wed, Aug 26
Japan Airlines Logo
2:30 pm - 9:15 pm
ORD
-
GMP
16h 45m
1 stop
Japan Airlines Logo
7:15 pm - 7:45 am
GMP
-
ORD
26h 30m
1 stop
$1,258Japan Airlines
Mon, Aug 17 - Sat, Aug 29
EVA Air Logo
12:30 am - 6:10 pm
ORD
-
GMP
27h 40m
1 stop
EVA Air Logo
1:50 pm - 7:35 pm
GMP
-
ORD
20h 45m
1 stop
$1,262EVA Air
Sun, Aug 23 - Fri, Dec 11
Multiple Airlines Logo
8:55 am - 9:15 pm
STL
-
GMP
22h 20m
2 stops
Multiple Airlines Logo
8:10 am - 8:20 pm
GMP
-
STL
26h 10m
2 stops
$1,325Multiple Airlines
Sat, Sep 5 - Fri, Sep 11

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Japan Airlines flights from Illinois to Seoul Gimpo Intl Airport

Our best Japan Airlines deals on Illinois to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Sep 21
ORD10:15 amChicago O'Hare Intl
21h 00m
1 stop
GMP9:15 pmSeoul Gimpo Intl
Sep 30
GMP8:00 amSeoul Gimpo Intl
16h 45m
1 stop
ORD10:45 amChicago O'Hare Intl
$1,209
Japan Airlines
Aug 29
ORD6:59 amChicago O'Hare Intl
24h 16m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 7
GMP8:00 amSeoul Gimpo Intl
29h 30m
2 stops
ORD11:30 pmChicago O'Hare Intl
$1,231
Japan Airlines
Aug 30
ORD9:00 amChicago O'Hare Intl
22h 15m
2 stops
GMP9:15 pmSeoul Gimpo Intl
Sep 10
GMP12:05 pmSeoul Gimpo Intl
26h 25m
2 stops
ORD12:30 amChicago O'Hare Intl
$1,240

EVA Air flights from Illinois to Seoul Gimpo Intl Airport

Our best EVA Air deals on Illinois to Seoul Gimpo Intl Airport flight tickets
EVA Air
Sep 27
ORD12:30 amChicago O'Hare Intl
27h 40m
1 stop
GMP6:10 pmSeoul Gimpo Intl
Nov 3
GMP7:00 pmSeoul Gimpo Intl
39h 35m
1 stop
ORD7:35 pmChicago O'Hare Intl
$1,241
EVA Air
Aug 23
ORD12:30 amChicago O'Hare Intl
27h 40m
1 stop
GMP6:10 pmSeoul Gimpo Intl
Dec 11
GMP1:50 pmSeoul Gimpo Intl
20h 45m
1 stop
ORD7:35 pmChicago O'Hare Intl
$1,262
EVA Air
Aug 24
ORD12:30 amChicago O'Hare Intl
28h 45m
1 stop
GMP7:15 pmSeoul Gimpo Intl
Dec 12
GMP1:50 pmSeoul Gimpo Intl
20h 45m
1 stop
ORD7:35 pmChicago O'Hare Intl
$1,276

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Seoul Gimpo Intl Airport 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 June 30, 2026.
Use the filters below to find and compare flights from Illinois to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Mon 9/21

10:15 am-9:15 pm

1 stop21h 00m

Seoul Gimpo Intl

Wed 9/30

8:00 am-10:45 am

1 stop16h 45m

$1,209

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Sat 8/29

6:59 am-9:15 pm

2 stops24h 16m

Seoul Gimpo Intl

Mon 9/7

8:00 am-11:30 pm

2 stops29h 30m

$1,231

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Sun 8/30

9:00 am-9:15 pm

2 stops22h 15m

Seoul Gimpo Intl

Thu 9/10

12:05 pm-12:30 am

2 stops26h 25m

$1,240

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Sun 9/27

12:30 am-6:10 pm

1 stop27h 40m

Seoul Gimpo Intl

Tue 11/3

7:00 pm-7:35 pm

1 stop39h 35m

$1,241
Quickest round-trip

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Fri 8/21

2:30 pm-9:15 pm

1 stop16h 45m

Seoul Gimpo Intl

Wed 9/2

8:00 am-10:45 am

1 stop16h 45m

$1,247

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Thu 8/20

2:30 pm-9:15 pm

1 stop16h 45m

Seoul Gimpo Intl

Wed 9/2

8:00 am-10:45 am

1 stop16h 45m

$1,256

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Fri 8/14

10:40 am-9:15 pm

1 stop20h 35m

Seoul Gimpo Intl

Wed 8/26

8:00 am-11:00 am

1 stop17h 00m

$1,257

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Mon 8/17

2:30 pm-9:15 pm

1 stop16h 45m

Seoul Gimpo Intl

Sat 8/29

7:15 pm-7:45 am

1 stop26h 30m

$1,258

ChicagoSeoul

ORD - GMP

ORDGMP

Chicago O'Hare Intl

Sun 8/23

12:30 am-6:10 pm

1 stop27h 40m

Seoul Gimpo Intl

Fri 12/11

1:50 pm-7:35 pm

1 stop20h 45m

$1,262

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sat 9/5

8:55 am-9:15 pm

2 stops22h 20m

Seoul Gimpo Intl

Fri 9/11

8:10 am-8:20 pm

2 stops26h 10m

$1,325

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 Seoul from

How to get the cheapest flight ticket from Illinois to Seoul Gimpo Intl Airport

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

Can stopping save me money on Illinois to Seoul Gimpo Intl Airport flights?

You could potentially save up to 8% on your flight if you consider stops on a Illinois to Seoul Gimpo Intl Airport flight.

Cheap Illinois to Seoul Gimpo Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Seoul Gimpo Intl Airport

Fastest flight time

16h 45m

Direct flights

None
The fastest flight from Illinois to Seoul Gimpo Intl Airport takes 16h 45m
There are no direct flights from Illinois to Seoul Gimpo Intl Airport. There are no popular flight routes from Illinois to Seoul Gimpo Intl Airport.
Search flight deals

Frequently asked questions about flying from Illinois to Seoul Gimpo Intl Airport

  • When did momondo last update prices for flights from Illinois to Seoul Gimpo Intl Airport?

    Prices for flights from Illinois to Seoul Gimpo Intl Airport are updated daily.

  • How many operators does momondo search for flights from Illinois to Seoul Gimpo Intl Airport?

  • How old do you have to be to fly from Illinois to Seoul Gimpo Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Seoul Gimpo Intl Airport.

  • What documentation or ID do you need to fly to Seoul Gimpo Intl Airport?

    The required travel and health documents for your Seoul Gimpo Intl 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 Seoul Gimpo Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Seoul Gimpo Intl Airport

Compare and see reviews for airlines that fly from Illinois to Seoul Gimpo Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Japan AirlinesPriceFrom $1,098Free CancellationRating
8.3
1,852 reviews
Search Japan Airlines flights

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to Seoul from Illinois with this policy.

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

momondo provides multiple filters to help you find the best flight to Seoul from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Illinois and alert you when they change.

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