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$363+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
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 21, 2026.

This Air Canada deal was found by Cheapflights users on 2/18. 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 2/18$766
This Air Canada deal was found by Cheapflights users on 2/19. 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 4/274:05 pm
STL
-
NRT
1 stop33h 45m
Air Canada
Tue 5/55:35 pm
NRT
-
STL
1 stop16h 30m
Air Canada
Deal found 2/19$767
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 9/2812:10 pm
STL
-
NRT
1 stop37h 30m
Air Canada
Tue 10/135:25 pm
NRT
-
STL
1 stop16h 35m
Air Canada
Deal found 2/17$768
This Air Canada deal was found by Cheapflights users on 2/20. 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 stop16h 35m
Air Canada
Deal found 2/20$772
This Air Canada deal was found by Cheapflights users on 2/18. 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 10/1912:10 pm
STL
-
NRT
1 stop37h 30m
Air Canada
Thu 10/296:45 pm
NRT
-
STL
2 stops34h 45m
Air Canada
Deal found 2/18$777
This BusinessClass deal was found by Cheapflights users on 2/19. 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 4/284:05 pm
STL
-
NRT
1 stop33h 45m
ANA
Thu 5/75:35 pm
NRT
-
STL
1 stop16h 30m
ANA
Deal found 2/19$780
This BusinessClass deal was found by Cheapflights users on 2/19. 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 9/228:55 am
STL
-
HND
2 stops35h 40m
ANA
Wed 10/76:05 pm
HND
-
STL
1 stop15h 55m
ANA
Deal found 2/19$841
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:45 pm
ORD
-
KIX
1 stop25h 30m
Multiple Airlines
Wed 5/137:35 am
KIX
-
ORD
2 stops36h 15m
Multiple Airlines
Deal found 2/20$858
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:50 am
ORD
-
KIX
1 stop31h 25m
Multiple Airlines
Tue 5/127:35 am
KIX
-
ORD
2 stops36h 15m
Multiple Airlines
Deal found 2/19$863
This Air Canada deal was found by Cheapflights users on 2/20. 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 9/238:40 pm
ORD
-
KIX
1 stop29h 45m
Air Canada
Wed 10/146:00 pm
KIX
-
ORD
1 stop15h 48m
Air Canada
Deal found 2/20$868
This Ovago deal was found by Cheapflights users on 2/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:55 am
STL
-
HND
1 stop16h 50m
ANA
Wed 2/254:25 pm
HND
-
STL
1 stop15h 19m
ANA
Deal found 2/19$868
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

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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$766
(Air Canada)

One-way from

$363
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,093

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. 14% potential increase in price ($230 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 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 21, 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

Sat 4/25

4:05 pm-3:50 pm

1 stop33h 45m

Tokyo Narita

Sat 5/2

5:35 pm-8:05 pm

1 stop16h 30m

$803

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/23

6:00 am-3:30 pm

1 stop18h 30m

Tokyo Narita

Wed 2/25

5:35 pm-8:26 pm

1 stop17h 51m

$883

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 2/25

6:10 am-3:20 pm

1 stop18h 10m

Tokyo Haneda

Wed 3/4

8:00 pm-11:36 pm

1 stop18h 36m

$886

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/23

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 3/5

6:30 pm-11:59 pm

1 stop20h 29m

$886

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 3/9

7:03 am-2:35 pm

1 stop17h 32m

Tokyo Haneda

Wed 3/18

4:25 pm-8:42 pm

1 stop18h 17m

$886

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-11:58 pm

2 stops21h 33m

$891

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 3/8

6:12 pm-2:05 pm

2 stops29h 53m

Tokyo Haneda

Wed 3/18

4:25 pm-11:58 pm

2 stops21h 33m

$891

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

$919

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-8:00 am

2 stops28h 00m

$923

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sun 4/26

3:40 pm-4:25 pm

1 stop34h 45m

Osaka Kansai Intl

Sat 5/2

6:00 pm-2:45 pm

1 stop34h 45m

$936

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 $1,055). 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 21, 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 18h 10m. 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 $154 on United Airlines. Other airlines that offer cheap prices include Air Canada from $412 and Cathay Pacific from $422 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 $1,055). 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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$613Average$1,224FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$709Average$930FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$781Average$1,385FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$849Average$1,227FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$880Average$965FlexibilityNo cancel feeOn-time85%
ANACheapest$915Average$1,477FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$939Average$1,535FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$1,001Average$1,563FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$1,008Average$1,330FlexibilityNo cancel feeOn-time74%

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