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$370+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
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 August 1, 2026.

This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:55 am
STL
-
NRT
1 stop17h 15m
Air Canada
Wed 9/305:50 pm
NRT
-
STL
1 stop38h 51m
Air Canada
Deal found 7/27$799
This FlightHub deal was found by Cheapflights users on 7/27. 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 9/1512:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
Mon 9/215:50 pm
NRT
-
STL
2 stops32h 07m
Air Canada
Deal found 7/27$819
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:04 pm
STL
-
NRT
2 stops30h 26m
Air Canada
Mon 12/146:45 pm
NRT
-
STL
2 stops34h 45m
Air Canada
Deal found 7/30$823
This Air Canada deal was found by Cheapflights users on 7/27. 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 9/1612:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
Fri 9/255:50 pm
NRT
-
STL
1 stop16h 30m
Air Canada
Deal found 7/27$827
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:05 pm
STL
-
NRT
2 stops33h 35m
Air Canada
Fri 12/46:45 pm
NRT
-
STL
2 stops34h 45m
Air Canada
Deal found 7/28$828
This lol.travel deal was found by Cheapflights users on 7/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:00 am
ORD
-
KIX
2 stops20h 25m
Air Canada
Mon 8/246:00 pm
KIX
-
ORD
1 stop34h 36m
Air Canada
Deal found 7/29$829
This Justfly.com deal was found by Cheapflights users on 7/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
Fri 9/254:50 pm
NRT
-
STL
2 stops35h 10m
Air Canada
Deal found 7/29$837
This SmartFares deal was found by Cheapflights users on 7/30. 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.
Sun 9/208:55 am
STL
-
NRT
1 stop17h 15m
Air Canada
Tue 10/65:50 pm
NRT
-
STL
1 stop16h 10m
Air Canada
Deal found 7/30$838
This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:45 pm
ORD
-
KIX
1 stop42h 10m
Philippine Airlines
Wed 11/2510:05 am
KIX
-
ORD
1 stop21h 50m
Philippine Airlines
Deal found 7/29$872
This FlightHub deal was found by Cheapflights users on 7/29. 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 8/43:40 pm
ORD
-
KIX
1 stop34h 45m
Air Canada
Tue 8/186:00 pm
KIX
-
ORD
2 stops40h 01m
Air Canada
Deal found 7/29$873
This FlightHub deal was found by Cheapflights users on 7/27. 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 9/158:55 am
STL
-
HND
2 stops35h 40m
Air Canada
Mon 9/216:05 pm
HND
-
STL
2 stops35h 33m
Air Canada
Deal found 7/27$883
This Air Canada deal was found by Cheapflights users on 7/30. 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 8/198:50 pm
ORD
-
KIX
1 stop29h 35m
Air Canada
Tue 8/256:00 pm
KIX
-
ORD
1 stop34h 36m
Air Canada
Deal found 7/30$888

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 August 1, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$799
(Trip.com)

One-way from

$370
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,329

Good round-trip deal

$1,038 or less

Good one-way deal

$592 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 ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 1, 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

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Wed 1/13

10:45 pm-7:55 am

1 stop42h 10m

Osaka Kansai Intl

Wed 1/27

10:05 am-4:55 pm

1 stop21h 50m

$1,059

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 9/16

6:00 am-3:25 pm

1 stop19h 25m

Tokyo Haneda

Fri 9/25

3:45 pm-7:21 pm

1 stop17h 36m

$1,108

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 9/16

9:00 am-2:45 pm

1 stop15h 45m

Tokyo Narita

Fri 9/25

5:00 pm-9:21 pm

1 stop18h 21m

$1,108

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 9/16

6:00 am-4:15 pm

2 stops20h 15m

Tokyo Haneda

Fri 9/25

4:05 pm-11:42 pm

2 stops21h 37m

$1,112

ChicagoKobe

ORD - UKB

ORDUKB

Chicago O'Hare Intl

Thu 9/10

12:30 am-6:00 pm

1 stop27h 30m

Kobe

Sun 9/20

7:00 pm-8:45 pm

1 stop39h 45m

$1,146

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 8/31

5:00 am-2:50 pm

2 stops19h 50m

Osaka Kansai Intl

Wed 9/2

9:20 am-3:25 pm

1 stop20h 05m

$1,154

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 8/26

10:33 am-4:15 pm

1 stop15h 42m

Tokyo Haneda

Wed 9/2

4:05 pm-11:21 pm

2 stops21h 16m

$1,163

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

$1,168

ChicagoTokyo

MDW - HND

MDWHND

Chicago Midway

Tue 8/18

9:24 am-4:15 pm

1 stop16h 51m

Tokyo Haneda

Tue 8/25

4:05 pm-10:36 pm

2 stops20h 31m

$1,169

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 8/19

9:30 am-3:25 pm

1 stop15h 55m

Tokyo Haneda

Fri 8/28

5:45 pm-11:38 pm

1 stop19h 53m

$1,169

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, February is the cheapest month in which you can book a flight from Illinois to Japan (average of $1,091). Flying from Illinois to Japan in December is currently the most expensive (average of $1,713). 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 August 1, 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 18% on airfare.

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

Booking 12 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 July 25, 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 at noon 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 19h 25m. Fly via Philippine Airlines, United Airlines, 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 $395 on WestJet. Other airlines that offer cheap prices include Air Canada from $418 and American Airlines from $484 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, February is the cheapest month in which you can book a flight from Illinois to Japan (average of $1,091). Flying from Illinois to Japan in December is currently the most expensive (average of $1,713). 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

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Alternative routes for Illinois to Japan

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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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$355Average$1,116FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$696Average$974FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$861Average$1,272FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$893Average$1,459FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$956Average$1,508FlexibilityNo cancel feeOn-time79%
ANACheapest$962Average$1,608FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$1,001Average$1,386FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$1,008Average$1,177FlexibilityNo cancel feeOn-time74%

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