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$458+ Cheap flights from Illinois to Japan

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
1 adult, Economy
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Cheap flight deals from Illinois to Japan

Cheapest flights from Illinois to Japan
Explore the most affordable flight options available from Illinois to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:45 pm
ORD
-
KIX
1 stop29h 50m
Philippine Airlines
Mon 11/1610:25 am
KIX
-
ORD
1 stop21h 30m
Philippine Airlines
Deal found 6/25$852
This SmartFares deal was found by Cheapflights users on 6/28. 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.
Wed 11/1110:45 pm
ORD
-
KIX
1 stop29h 50m
Philippine Airlines
Wed 11/1810:25 am
KIX
-
ORD
1 stop21h 30m
Philippine Airlines
Deal found 6/28$876
This SmartFares deal was found by Cheapflights users on 6/24. 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 9/13:04 pm
STL
-
NRT
1 stop34h 56m
Multiple Airlines
Thu 9/106:00 pm
NRT
-
STL
1 stop19h 59m
Multiple Airlines
Deal found 6/24$887
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:15 am
STL
-
HND
1 stop18h 10m
ANA
Thu 12/1010:25 am
HND
-
STL
1 stop16h 41m
ANA
Deal found 6/24$890
This FlightHub deal was found by Cheapflights users on 6/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:00 am
STL
-
HND
1 stop23h 15m
ANA
Wed 9/165:15 pm
HND
-
STL
1 stop16h 16m
ANA
Deal found 6/25$892
This FlightHub deal was found by Cheapflights users on 6/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:45 pm
ORD
-
KIX
1 stop29h 50m
Philippine Airlines
Wed 12/910:25 am
KIX
-
ORD
1 stop21h 30m
Philippine Airlines
Deal found 6/25$893
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/81:08 pm
STL
-
HND
1 stop37h 37m
ANA
Thu 11/196:20 pm
HND
-
STL
1 stop14h 46m
ANA
Deal found 6/24$895
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:33 am
STL
-
NRT
1 stop16h 27m
ANA
Thu 12/105:05 pm
NRT
-
STL
1 stop32h 36m
ANA
Deal found 6/24$896
This FlightHub deal was found by Cheapflights users on 6/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:59 pm
STL
-
HND
1 stop36h 26m
ANA
Thu 9/1710:40 am
HND
-
STL
1 stop15h 17m
ANA
Deal found 6/25$897
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:59 pm
STL
-
HND
1 stop18h 16m
United Airlines
Tue 9/2912:30 am
HND
-
STL
2 stops26h 10m
United Airlines
Deal found 6/24$898
This United Airlines deal was found by Cheapflights users on 6/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:33 am
STL
-
NRT
1 stop16h 42m
United Airlines
Tue 11/106:00 pm
NRT
-
STL
1 stop15h 06m
United Airlines
Deal found 6/23$898
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:43 am
STL
-
HND
2 stops20h 07m
American Airlines
Wed 9/2311:55 am
HND
-
STL
2 stops18h 45m
American Airlines
Deal found 6/24$901

Find flight deals from Illinois to Japan

Keep the following information in mind while searching for Illinois to Japan flight deals. Data was last updated June 28, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$852
(Cheapflightsfares)

One-way from

$458
(Air Canada)

Popular in

December

Cheapest in

January

Average price

$1,509

Good round-trip deal

$1,134 or less

Good one-way deal

$611 or less
Provider with most accurate pricing for Chicago (CHI)-Tokyo (TYO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Tokyo (TYO) flights.
Search Deals
From Illinois to Japan
Search Deals
One-way flight from Illinois to Japan
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Japan.
Search Deals
Price to beat on a one-way flight from Illinois to Japan.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Japan 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 June 28, 2026.
Use the filters below to find and compare flights from Illinois to Japan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 11/3

6:00 am-3:15 pm

1 stop18h 15m

Tokyo Narita

Thu 11/12

4:45 pm-6:03 pm

1 stop16h 18m

$898

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 11/8

7:04 pm-3:15 pm

1 stop29h 11m

Tokyo Narita

Tue 11/17

5:00 pm-6:03 pm

1 stop16h 03m

$903

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 8/17

4:50 pm-2:30 pm

1 stop31h 40m

Tokyo Narita

Tue 9/1

4:30 pm-4:34 pm

1 stop14h 04m

$986

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 9/6

9:00 am-2:30 pm

1 stop15h 30m

Tokyo Narita

Sun 9/13

4:45 pm-11:40 pm

2 stops20h 55m

$1,002

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 9/7

6:30 am-4:15 pm

1 stop19h 45m

Tokyo Haneda

Mon 9/14

6:25 pm-11:42 pm

2 stops19h 17m

$1,003

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 9/6

6:00 am-4:15 pm

2 stops20h 15m

Tokyo Haneda

Sun 9/13

4:05 pm-11:42 pm

2 stops21h 37m

$1,003

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 10/25

7:30 am-3:15 pm

1 stop17h 45m

Tokyo Narita

Wed 11/25

5:30 pm-10:20 pm

2 stops19h 50m

$1,008

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 9/30

5:10 am-3:25 pm

2 stops20h 15m

Tokyo Narita

Wed 10/7

4:30 pm-8:16 pm

2 stops17h 46m

$1,008

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 9/22

10:29 am-4:15 pm

1 stop15h 46m

Tokyo Haneda

Fri 10/9

6:25 pm-8:12 am

2 stops27h 47m

$1,009

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 9/20

5:59 pm-1:05 pm

2 stops29h 06m

Tokyo Haneda

Tue 10/6

6:25 pm-8:37 pm

1 stop16h 12m

$1,009

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Illinois with our price prediction graph.
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 Japan

What is the cheapest month to book a flight from Illinois to Japan?

Currently, January is the cheapest month in which you can book a flight from Illinois to Japan (average of $162). Flying from Illinois to Japan in December is currently the most expensive (average of $1,995). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to JP?

Find hourly flight availability from Illinois to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 28, 2026.

One of the essential ways to save on airfare from Illinois to Japan is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 21% on airfare.

How far ahead should I book a flight from Illinois to Japan?

Booking 24 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Japan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest day to fly from Illinois to Japan?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Japan. Price data was last updated on June 27, 2026.

Travelers seeking maximum savings on their Illinois to Japan flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Japan?

    There are many flights that can get you from Illinois to Japan in 18h 15m. Fly via United Airlines, Delta, or Cathay Pacific to get the fastest option. Illinois and Japan are separated by a distance of 6350 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Japan one-way?

    One-way options have recently been found by users for as low as $468 on Air Canada. Other airlines that offer cheap prices include ANA from $486 and Korean Air from $509 one-way.

  • Can I find deals for flights from Illinois to Japan that include hotel bookings?

    Yes. In addition to deals on Illinois to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Japan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Japan.

  • Can I find deals for business class flights from Illinois to Japan?

    Yes. Cheapflights offers flight deals from Illinois to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Japan?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Japan (average of $162). Flying from Illinois to Japan in December is currently the most expensive (average of $1,995). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Japan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Illinois to Japan

Discover the top 8 airlines that operate flights from Illinois to Japan. 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 June 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$355Average$1,116FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$696Average$914FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$861Average$1,195FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$893Average$1,452FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$956Average$1,509FlexibilityNo cancel feeOn-time79%
ANACheapest$962Average$1,598FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$978Average$1,151FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,001Average$1,421FlexibilityNo cancel feeOn-time71%

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