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$379+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Aug 13 — Aug 201
Thu 8/13
Thu 8/20
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 July 14, 2026.

This FlightHub deal was found by Cheapflights users on 7/10. 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 11/1110:45 pm
ORD
-
KIX
1 stop29h 25m
Philippine Airlines
Wed 11/1810:05 am
KIX
-
ORD
1 stop21h 50m
Philippine Airlines
Deal found 7/10$882
This Mytrip deal was found by Cheapflights users on 7/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:40 am
ORD
-
KIX
1 stop20h 10m
Multiple Airlines
Mon 8/319:00 pm
KIX
-
ORD
1 stop24h 20m
Multiple Airlines
Deal found 7/10$963
This SmartFares deal was found by Cheapflights users on 7/10. 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.
Mon 8/245:55 am
ORD
-
KIX
2 stops20h 30m
Air Canada
Mon 8/316:00 pm
KIX
-
ORD
1 stop34h 36m
Air Canada
Deal found 7/10$975
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Thu 8/278:55 am
STL
-
NRT
1 stop16h 55m
Air Canada
Thu 9/35:35 pm
NRT
-
STL
1 stop39h 07m
Air Canada
Deal found 7/13$977
This Air Canada deal was found by Cheapflights users on 7/8. 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 8/183:40 pm
ORD
-
KIX
1 stop34h 45m
Air Canada
Tue 8/256:00 pm
KIX
-
ORD
1 stop34h 36m
Air Canada
Deal found 7/8$980
This Air Canada deal was found by Cheapflights users on 7/11. 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.
Sun 8/23:40 pm
ORD
-
KIX
1 stop34h 45m
Air Canada
Mon 8/176:00 pm
KIX
-
ORD
1 stop34h 36m
Air Canada
Deal found 7/11$983
This Air Canada deal was found by Cheapflights users on 7/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
Mon 9/285:50 pm
NRT
-
STL
1 stop38h 51m
Air Canada
Deal found 7/14$992
This Gotogate deal was found by Cheapflights users on 7/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:10 pm
STL
-
NRT
2 stops36h 45m
Air Canada
Tue 9/154:50 pm
NRT
-
STL
2 stops39h 51m
Air Canada
Deal found 7/14$999
This Air Canada deal was found by Cheapflights users on 7/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
Mon 9/145:50 pm
NRT
-
STL
2 stops34h 10m
Air Canada
Deal found 7/14$1,000
This FlightHub deal was found by Cheapflights users on 7/13. 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 11/114:05 pm
STL
-
NRT
1 stop33h 25m
Air Canada
Tue 12/16:45 pm
NRT
-
STL
2 stops34h 45m
Air Canada
Deal found 7/13$1,004
This FlightHub deal was found by Cheapflights users on 7/13. 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.
Thu 11/124:05 pm
STL
-
NRT
2 stops33h 25m
Air Canada
Tue 12/16:45 pm
NRT
-
STL
2 stops34h 45m
Air Canada
Deal found 7/13$1,008
This Booking.com deal was found by Cheapflights users on 7/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:29 am
STL
-
NRT
1 stop19h 31m
Multiple Airlines
Wed 9/236:00 pm
NRT
-
STL
1 stop34h 21m
Multiple Airlines
Deal found 7/10$1,011

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 July 14, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$882
(FlightHub)

One-way from

$379
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,574

Good round-trip deal

$1,152 or less

Good one-way deal

$599 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 ($8 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 July 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 July 14, 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 11/17

7:33 am-3:00 pm

1 stop16h 27m

Tokyo Narita

Tue 12/1

6:00 pm-2:30 pm

1 stop35h 30m

$1,099

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 11/9

6:15 am-3:30 pm

1 stop18h 15m

Tokyo Narita

Thu 11/19

5:40 pm-4:43 pm

1 stop14h 03m

$1,099

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 9/1

7:00 am-4:15 pm

2 stops19h 15m

Tokyo Haneda

Tue 9/8

4:05 pm-11:42 pm

2 stops21h 37m

$1,113

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 11/15

6:59 pm-2:35 pm

2 stops28h 36m

Tokyo Haneda

Thu 12/3

5:15 pm-11:39 pm

2 stops21h 24m

$1,113

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 9/7

6:00 am-2:15 pm

1 stop18h 15m

Tokyo Haneda

Mon 9/14

4:05 pm-8:35 pm

2 stops18h 30m

$1,125

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

$1,125

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 10/28

7:10 am-5:45 pm

2 stops20h 35m

Tokyo Haneda

Wed 11/11

5:15 pm-11:18 pm

1 stop21h 03m

$1,131

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 7/29

6:00 am-3:25 pm

1 stop19h 25m

Tokyo Haneda

Wed 8/12

5:15 pm-10:00 pm

1 stop18h 45m

$1,210

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 8/4

6:01 am-1:35 pm

1 stop17h 34m

Tokyo Haneda

Thu 8/13

10:40 am-12:02 pm

1 stop15h 22m

$1,210
Quickest round-trip

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 8/19

7:25 am-3:10 pm

1 stop17h 45m

Tokyo Narita

Wed 8/26

4:30 pm-4:34 pm

1 stop14h 04m

$1,210

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

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 $2,027). 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 July 14, 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 19% 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 11, 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 16h 27m. Fly via United Airlines, Delta, or EVA Air 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 $395 on WestJet. Other airlines that offer cheap prices include Air Canada from $468 and ANA from $486 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 $2,027). 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 July 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$355Average$1,116FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$696Average$974FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$861Average$1,270FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$893Average$1,455FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$956Average$1,506FlexibilityNo cancel feeOn-time79%
ANACheapest$962Average$1,601FlexibilityNo 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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