How long does it take to fly to Cheongju?

Flight times from Illinois to Cheongju vary, but if you’re flying out of Chicago and flying into Incheon Intl Airport (one of the most popular routes), then the duration is 20h 30m on average. Another popular route from Illinois to Cheongju is flying from Moline to Incheon Intl Airport, which will take roughly 29h 15m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Illinois to Cheongju Airport?

Prices for flights from Illinois to Cheongju Airport are refreshed on a daily basis.

How old do you have to be to fly from Illinois to Cheongju 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 Cheongju Airport.

What documentation or ID do you need to fly to Cheongju Airport?

The travel and health documents you'll need for your trip to Cheongju Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cheongju Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$584 Cheap Flights from Illinois to Cheongju in 2026/27

Find the cheapest flights from Illinois to Seoul

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:30 am - 4:40 pmORD Chicago O'Hare Intl-CJJ Cheongju

26h 10m1 stop Taipei City Taiwan Taoyuan Intl

10:30 am - 8:45 pmCJJ Cheongju-ORD Chicago O'Hare Intl

24h 15m1 stop Taipei City Taiwan Taoyuan Intl

$1,669Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

12:30 am - 4:40 pmORD Chicago O'Hare Intl-CJJ Cheongju

26h 10m1 stop Taipei City Taiwan Taoyuan Intl

12:10 pm - 8:45 pmCJJ Cheongju-ORD Chicago O'Hare Intl

22h 35m2 stops Shanghai Pu Dong Taipei City Taiwan Taoyuan Intl

$1,748Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

11:30 pm - 6:05 amORD Chicago O'Hare Intl-CJJ Cheongju

39h 35m1 stop Taipei City Taiwan Taoyuan Intl

11:55 pm - 11:59 pmCJJ Cheongju-ORD Chicago O'Hare Intl

39h 04m2 stops Taipei City Taiwan Taoyuan Intl Seattle/Tacoma Intl

$1,787Multiple Airlines

Fri, Nov 13 - Fri, Nov 20

12:30 am - 4:40 pmORD Chicago O'Hare Intl-CJJ Cheongju

26h 10m1 stop Taipei City Taiwan Taoyuan Intl

12:10 pm - 6:34 amCJJ Cheongju-ORD Chicago O'Hare Intl

32h 24m3 stops Shanghai Pu Dong Incheon Intl Los Angeles

$1,846Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

11:30 pm - 6:05 amORD Chicago O'Hare Intl-CJJ Cheongju

39h 35m1 stop Taipei City Taiwan Taoyuan Intl

11:55 pm - 12:30 pmCJJ Cheongju-ORD Chicago O'Hare Intl

27h 35m2 stops Taipei City Taiwan Taoyuan Intl Hong Kong Intl

$1,887Multiple Airlines

Fri, Nov 13 - Fri, Nov 20

10:25 am - 9:30 pmORD Chicago O'Hare Intl-CJJ Cheongju

20h 05m1 stop Tokyo Narita

3:50 pm - 6:15 amCJJ Cheongju-ORD Chicago O'Hare Intl

29h 25m3 stops Tokyo Narita San Francisco Los Angeles

$1,905Multiple Airlines

Fri, Nov 13 - Fri, Nov 20

10:25 am - 12:25 pmORD Chicago O'Hare Intl-CJJ Cheongju

35h 00m3 stops Tokyo Narita Incheon Intl Jeju City

7:25 am - 6:15 amCJJ Cheongju-ORD Chicago O'Hare Intl

37h 50m3 stops Tokyo Narita San Francisco Los Angeles

$1,924Multiple Airlines

Fri, Nov 13 - Fri, Nov 20

12:30 am - 9:55 pmORD Chicago O'Hare Intl-CJJ Cheongju

31h 25m2 stops Taipei City Taiwan Taoyuan Intl Tokyo Narita

9:30 am - 8:45 pmCJJ Cheongju-ORD Chicago O'Hare Intl

25h 15m2 stops Tokyo Narita Taipei City Taiwan Taoyuan Intl

$1,971Multiple Airlines

Sun, Oct 11 - Thu, Oct 15

12:30 am - 10:40 pmORD Chicago O'Hare Intl-CJJ Cheongju

32h 10m2 stops Taipei City Taiwan Taoyuan Intl Osaka Kansai Intl

12:10 pm - 6:34 amCJJ Cheongju-ORD Chicago O'Hare Intl

32h 24m3 stops Shanghai Pu Dong Incheon Intl Los Angeles

$1,972Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

7:05 am - 9:30 pmORD Chicago O'Hare Intl-CJJ Cheongju

23h 25m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita

3:50 pm - 6:15 amCJJ Cheongju-ORD Chicago O'Hare Intl

29h 25m3 stops Tokyo Narita San Francisco Los Angeles

$2,026Multiple Airlines

Fri, Nov 13 - Fri, Nov 20

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Sat 10/10

12:30 am-4:40 pm

1 stop26h 10m

Cheongju

Wed 10/14

10:30 am-8:45 pm

1 stop24h 15m

$1,669

Quickest round-trip

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Sat 10/10

12:30 am-4:40 pm

1 stop26h 10m

Cheongju

Wed 10/14

12:10 pm-8:45 pm

2 stops22h 35m

$1,748

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Fri 11/13

11:30 pm-6:05 am

1 stop39h 35m

Cheongju

Fri 11/20

11:55 pm-11:59 pm

2 stops39h 04m

$1,787

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Sat 10/10

12:30 am-4:40 pm

1 stop26h 10m

Cheongju

Wed 10/14

12:10 pm-6:34 am

3 stops32h 24m

$1,846

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Fri 11/13

11:30 pm-6:05 am

1 stop39h 35m

Cheongju

Fri 11/20

11:55 pm-12:30 pm

2 stops27h 35m

$1,887

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Fri 11/13

10:25 am-9:30 pm

1 stop20h 05m

Cheongju

Fri 11/20

3:50 pm-6:15 am

3 stops29h 25m

$1,905

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Fri 11/13

10:25 am-12:25 pm

3 stops35h 00m

Cheongju

Fri 11/20

7:25 am-6:15 am

3 stops37h 50m

$1,924

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Sun 10/11

12:30 am-9:55 pm

2 stops31h 25m

Cheongju

Thu 10/15

9:30 am-8:45 pm

2 stops25h 15m

$1,971

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Sat 10/10

12:30 am-10:40 pm

2 stops32h 10m

Cheongju

Wed 10/14

12:10 pm-6:34 am

3 stops32h 24m

$1,972

ChicagoCheongju

ORD Chicago O'Hare Intl - CJJ Cheongju

ORDCJJ

Chicago O'Hare Intl

Fri 11/13

7:05 am-9:30 pm

2 stops23h 25m

Cheongju

Fri 11/20

3:50 pm-6:15 am

3 stops29h 25m

$2,026

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Cheongju

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

Airlines

Other information

What airlines fly to Cheongju?

Korean Air, EVA Air and Delta are the top three most popular airlines that fly to Cheongju from Illinois according to our data. Korean Air is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Cheongju. Keep in mind that there are 11 different airlines that fly to Cheongju on a routine basis, so you have a few additional options to choose from.

Cheap Illinois to Cheongju flight deals and tips

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

Best Price Found	$584
Fastest flight time	21h 40m
Direct flights	None

The best one-way flight to Cheongju from Illinois in the past 72 hours is $584. The best round-trip flight deal from Illinois to Cheongju found on momondo in the last 72 hours is $1,669.

The fastest flight from Illinois to Cheongju takes 21h 40m

There are no direct flights from Illinois to Cheongju. There are no popular flight routes from Illinois to Cheongju.

Search flight deals

Frequently asked questions about flying from Illinois to Cheongju

When did momondo last update prices for flights from Illinois to Cheongju Airport?
Prices for flights from Illinois to Cheongju Airport are refreshed on a daily basis.
How old do you have to be to fly from Illinois to Cheongju 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 Cheongju Airport.
What documentation or ID do you need to fly to Cheongju Airport?
The travel and health documents you'll need for your trip to Cheongju Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cheongju Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Cheongju for you.

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

Yes. momondo allows you to filter the results for Illinois to Cheongju flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Cheongju 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 Cheongju right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Cheongju flights. All you need is a valid email address and we will do the rest; it is that quick and easy.