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$356+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Mar 20 — Mar 271
Fri 3/20
Fri 3/27
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 February 18, 2026.

This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:05 pm
STL
-
NRT
1 stop33h 45m
Air Canada
Fri 5/85:35 pm
NRT
-
STL
1 stop16h 30m
Air Canada
Deal found 2/17$767
This Air Canada deal was found by Cheapflights users on 2/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 pm
STL
-
NRT
1 stop37h 30m
Air Canada
Tue 9/295:25 pm
NRT
-
STL
1 stop16h 35m
Air Canada
Deal found 2/16$768
This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:05 pm
STL
-
NRT
1 stop33h 45m
Air Canada
Thu 4/305:25 pm
NRT
-
STL
1 stop32h 41m
Air Canada
Deal found 2/17$771
This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:15 pm
STL
-
NRT
2 stops34h 00m
Air Canada
Wed 11/116:45 pm
NRT
-
STL
1 stop35h 45m
Air Canada
Deal found 2/17$772
This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm
STL
-
NRT
2 stops34h 15m
Air Canada
Wed 10/75:25 pm
NRT
-
STL
1 stop34h 35m
Air Canada
Deal found 2/17$774
This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:40 pm
STL
-
NRT
2 stops34h 15m
Air Canada
Tue 10/135:40 pm
NRT
-
STL
2 stops34h 20m
Air Canada
Deal found 2/17$776
This BusinessClass deal was found by Cheapflights users on 2/16. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 pm
STL
-
NRT
2 stops36h 45m
ANA
Tue 9/294:55 pm
NRT
-
STL
2 stops35h 05m
ANA
Deal found 2/16$781
This BusinessClass deal was found by Cheapflights users on 2/16. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 pm
STL
-
NRT
2 stops36h 45m
ANA
Wed 9/235:40 pm
NRT
-
STL
2 stops34h 20m
ANA
Deal found 2/16$784
This BusinessClass deal was found by Cheapflights users on 2/16. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:40 pm
STL
-
NRT
2 stops34h 15m
ANA
Tue 9/225:25 pm
NRT
-
STL
1 stop16h 35m
ANA
Deal found 2/16$785
This BusinessClass deal was found by Cheapflights users on 2/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:05 pm
STL
-
NRT
2 stops33h 20m
ANA
Thu 4/305:25 pm
NRT
-
STL
1 stop32h 41m
ANA
Deal found 2/17$788
This Air Canada deal was found by Cheapflights users on 2/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:40 pm
ORD
-
KIX
1 stop29h 45m
Air Canada
Fri 10/236:00 pm
KIX
-
ORD
1 stop15h 48m
Air Canada
Deal found 2/17$869
This BusinessClass deal was found by Cheapflights users on 2/14. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:14 am
STL
-
HND
1 stop16h 31m
Vietnam Airlines
Fri 2/205:20 pm
HND
-
STL
1 stop14h 25m
Vietnam Airlines
Deal found 2/14$870

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 February 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$767
(Air Canada)

One-way from

$356
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,070

Good round-trip deal

$969 or less

Good one-way deal

$510 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. 15% potential increase in price ($241 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 18, 2026.
Use the filters below to find and compare flights from Illinois to Japan that are best for you.

Fly from

Illinois

Fly to

Japan

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 4/20

4:05 pm-3:50 pm

1 stop33h 45m

Tokyo Narita

Thu 4/30

5:25 pm-12:06 pm

1 stop32h 41m

$771

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 4/20

4:05 pm-3:25 pm

2 stops33h 20m

Tokyo Narita

Thu 4/30

5:25 pm-12:06 pm

1 stop32h 41m

$788

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 5/4

5:45 pm-9:15 am

1 stop25h 30m

Osaka Kansai Intl

Tue 5/12

9:00 pm-5:50 am

2 stops46h 50m

$885

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 2/28

5:50 pm-3:20 pm

2 stops30h 30m

Tokyo Haneda

Tue 3/10

4:25 pm-8:42 pm

1 stop18h 17m

$891

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 3/1

6:40 pm-2:05 pm

2 stops28h 25m

Tokyo Haneda

Wed 3/4

5:20 pm-8:43 pm

2 stops18h 23m

$891

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 3/3

7:41 am-4:30 pm

2 stops41h 49m

Tokyo Narita

Thu 3/12

6:45 pm-3:29 pm

2 stops34h 44m

$899

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 4/20

11:50 am-9:00 pm

1 stop19h 10m

Osaka Kansai Intl

Tue 4/28

9:00 pm-3:17 pm

2 stops32h 17m

$917

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 4/20

8:50 am-4:25 pm

1 stop17h 35m

Osaka Kansai Intl

Tue 5/12

6:00 pm-2:45 pm

1 stop34h 45m

$920

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 4/18

8:54 am-1:25 pm

1 stop38h 31m

Tokyo Narita

Wed 4/29

9:45 am-11:45 am

1 stop16h 00m

$932

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 4/15

7:45 am-9:00 pm

2 stops23h 15m

Tokyo Haneda

Fri 4/24

9:15 pm-5:50 am

2 stops22h 35m

$945

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 60 results
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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, August is the cheapest month in which you can book a flight from Illinois to Japan (average of $610). Flying from Illinois to Japan in June is currently the most expensive (average of $1,052). 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 February 18, 2026.

One of the essential ways to save on airfare from Illinois to Japan is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 49% on airfare.

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 February 17, 2026.

Travelers seeking maximum savings on their Illinois to Japan flight should consider departing on Monday 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 30h 30m. Fly via Air Canada, ANA, or Delta to get the fastest option. Illinois and Japan are separated by a distance of 6383 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 $95 on Frontier. Other airlines that offer cheap prices include American Airlines from $125 and Southwest from $130 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, August is the cheapest month in which you can book a flight from Illinois to Japan (average of $610). Flying from Illinois to Japan in June is currently the most expensive (average of $1,052). 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 9 airlines flying from Illinois to Japan

Discover the top 9 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 February 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$613Average$1,224FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$709Average$930FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$767Average$1,260FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$781Average$1,408FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$880Average$965FlexibilityNo cancel feeOn-time85%
ANACheapest$915Average$1,610FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$939Average$1,568FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$1,001Average$1,676FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$1,008Average$1,358FlexibilityNo cancel feeOn-time74%

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