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$350+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
jul. 5 — jul. 121
dom. 7/5
dom. 7/12
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 junio 5, 2026.

This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1512:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
lun. 9/215:50 pm
NRT
-
STL
2 stops32h 07m
Air Canada
Deal found 5/30$957
This Air Canada deal was found by Cheapflights users on 6/2. 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.
mar. 9/15:30 pm
STL
-
NRT
2 stops31h 25m
Air Canada
lun. 9/75:35 pm
NRT
-
STL
2 stops32h 22m
Air Canada
Deal found 6/2$958
This Air Canada deal was found by Cheapflights users on 5/30. 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.
mié. 9/912:10 pm
STL
-
NRT
1 stop37h 15m
Air Canada
mié. 9/235:50 pm
NRT
-
STL
1 stop38h 51m
Air Canada
Deal found 5/30$960
This FlightHub deal was found by Cheapflights users on 6/4. 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.
lun. 9/1412:10 pm
STL
-
NRT
2 stops36h 45m
Air Canada
lun. 9/285:25 pm
NRT
-
STL
2 stops32h 48m
Air Canada
Deal found 6/4$962
This Expedia deal was found by Cheapflights users on 6/4. 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.
mié. 9/162:40 pm
STL
-
NRT
2 stops34h 15m
Air Canada
mié. 12/96:45 pm
NRT
-
STL
2 stops32h 35m
Air Canada
Deal found 6/4$967
This Air Canada deal was found by Cheapflights users on 6/4. 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.
lun. 9/78:55 am
STL
-
NRT
1 stop16h 55m
Air Canada
lun. 9/145:25 pm
NRT
-
STL
1 stop34h 35m
Air Canada
Deal found 6/4$970
This Air Canada deal was found by Cheapflights users on 6/4. 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.
lun. 9/78:55 am
STL
-
NRT
1 stop16h 55m
Air Canada
lun. 9/285:50 pm
NRT
-
STL
2 stops34h 10m
Air Canada
Deal found 6/4$973
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/812:10 pm
STL
-
NRT
2 stops36h 45m
Air Canada
jue. 9/175:25 pm
NRT
-
STL
1 stop34h 35m
Air Canada
Deal found 5/30$975
This Orbitz deal was found by Cheapflights users on 5/31. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/52:40 pm
STL
-
NRT
2 stops34h 45m
Air Canada
lun. 10/195:50 pm
NRT
-
STL
2 stops34h 10m
Air Canada
Deal found 5/31$977
This FlightHub deal was found by Cheapflights users on 5/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/292:40 pm
STL
-
NRT
2 stops34h 45m
Air Canada
mar. 10/134:50 pm
NRT
-
STL
2 stops39h 51m
Air Canada
Deal found 5/30$979
This FlightHub deal was found by Cheapflights users on 6/1. 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.
mar. 9/18:55 am
STL
-
HND
2 stops22h 40m
Multiple Airlines
jue. 9/105:00 pm
HND
-
STL
2 stops41h 00m
Multiple Airlines
Deal found 6/1$1,023
This Gotogate deal was found by Cheapflights users on 5/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/158:55 am
STL
-
HND
2 stops23h 35m
Multiple Airlines
lun. 9/216:05 pm
HND
-
STL
1 stop15h 55m
Multiple Airlines
Deal found 5/30$1,028

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 junio 5, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$957
(FlightHub)

One-way from

$350
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,544

Good round-trip deal

$1,197 or less

Good one-way deal

$616 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 ($9 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 junio 5, 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

lun. 8/24

5:10 am-2:30 pm

1 stop19h 20m

Tokyo Narita

mié. 9/2

5:05 pm-6:39 pm

1 stop15h 34m

$1,088
Quickest round-trip

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

mar. 8/25

9:00 am-2:30 pm

1 stop15h 30m

Tokyo Narita

vie. 8/28

5:05 pm-6:39 pm

1 stop15h 34m

$1,088

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

mié. 8/12

8:40 am-3:55 pm

1 stop17h 15m

Tokyo Haneda

mar. 8/18

12:30 am-8:39 am

2 stops22h 09m

$1,092

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

mié. 8/19

10:33 am-4:15 pm

1 stop15h 42m

Tokyo Haneda

mié. 8/26

4:35 pm-12:41 am

2 stops22h 06m

$1,093

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

lun. 8/24

2:32 pm-2:00 pm

2 stops33h 28m

Tokyo Haneda

mié. 11/18

5:15 pm-4:54 pm

1 stop14h 39m

$1,093

ChicagoNagoya

ORD - NGO

ORDNGO

Chicago O'Hare Intl

lun. 9/28

4:15 pm-3:30 pm

2 stops33h 15m

Nagoya Chubu Centrair Intl

vie. 10/2

10:00 am-1:55 pm

1 stop41h 55m

$1,158

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

dom. 8/16

5:10 am-2:30 pm

1 stop19h 20m

Tokyo Narita

dom. 8/23

5:25 pm-11:38 pm

1 stop20h 13m

$1,188

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

sáb. 8/22

5:30 pm-4:25 am

2 stops20h 55m

Tokyo Haneda

sáb. 9/5

10:55 pm-8:39 am

2 stops23h 44m

$1,192

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

dom. 8/16

6:30 am-4:15 pm

1 stop19h 45m

Tokyo Haneda

lun. 8/24

4:35 pm-12:41 am

2 stops22h 06m

$1,193

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

sáb. 8/22

6:54 pm-3:10 pm

1 stop30h 16m

Tokyo Narita

sáb. 11/21

6:00 pm-6:09 pm

1 stop15h 09m

$1,194

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/31

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, August is the cheapest month in which you can book a flight from Illinois to Japan (average of $137). Flying from Illinois to Japan in December is currently the most expensive (average of $2,000). 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 junio 5, 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 May 30, 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 15h 42m. Fly via United Airlines, Delta, or Cathay Pacific 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 $133 on United Airlines. Other airlines that offer cheap prices include American Airlines from $133 and Southwest from $144 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 $137). Flying from Illinois to Japan in December is currently the most expensive (average of $2,000). 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

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 junio 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$355Average$1,116FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$696Average$917FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$861Average$1,230FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$893Average$1,452FlexibilityNo cancel feeOn-time69%
ANACheapest$915Average$1,640FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$940Average$1,499FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$978Average$1,263FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,001Average$1,443FlexibilityNo cancel feeOn-time71%

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