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$327+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Illinois to Japan

Keep the following information in mind while searching for Illinois to Japan flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$774
(United Airlines)

One-way from

$327
(Alaska Airlines)

Popular in

June

Cheapest in

September

Average price

$1,259

Good round-trip deal

$806 or less

Good one-way deal

$495 or less
Provider with most accurate pricing for Chicago (CHI)-Tokyo (TYO) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Tokyo (TYO) flights.
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From Illinois to Japan
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One-way flight from Illinois to Japan
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Highest demand for flights based on searches. 12% potential increase in price ($197 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Illinois to Japan.
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Price to beat on a one-way flight from Illinois to Japan.
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Find 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 October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:00 amSTL - HND
1 stop16h 45mUnited Airlines
Wed 11/54:25 pmHND - STL
2 stops20h 29mUnited Airlines
Deal found 10/30$772
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:24 pmSTL - HND
1 stop33h 21mUnited Airlines
Wed 11/124:25 pmHND - STL
1 stop15h 02mUnited Airlines
Deal found 10/30$774
This FlightHub deal was found by Cheapflights users on 10/30. 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.
Sun 11/25:30 amSTL - HND
1 stop20h 15mANA
Tue 11/46:20 pmHND - STL
1 stop16h 19mANA
Deal found 10/30$778
This Air Canada deal was found by Cheapflights users on 10/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:42 pmSTL - HND
2 stops30h 58mAir Canada
Fri 12/196:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 10/29$779
This Air Canada deal was found by Cheapflights users on 10/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/74:05 pmSTL - HND
1 stop33h 35mAir Canada
Sun 12/146:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 10/29$780
This FlightHub deal was found by Cheapflights users on 10/30. 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.
Mon 12/14:05 pmSTL - NRT
2 stops33h 15mAir Canada
Mon 12/86:45 pmNRT - STL
2 stops35h 44mAir Canada
Deal found 10/30$780
This FlightHub deal was found by Cheapflights users on 10/27. 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 10/288:00 amSTL - HND
1 stop19h 45mANA
Tue 11/46:20 pmHND - STL
1 stop31h 31mANA
Deal found 10/27$783
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:05 amSTL - HND
1 stop16h 40mUnited Airlines
Tue 11/46:20 pmHND - STL
1 stop19h 25mUnited Airlines
Deal found 10/28$784
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:20 amSTL - NRT
1 stop17h 10mUnited Airlines
Wed 11/55:35 pmNRT - STL
1 stop19h 19mUnited Airlines
Deal found 10/28$785
This Gotogate deal was found by Cheapflights users on 10/30. 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.
Mon 11/36:30 amSTL - HND
1 stop20h 15mANA
Wed 11/56:20 pmHND - STL
1 stop33h 08mANA
Deal found 10/30$786
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:30 amSTL - NRT
2 stops18h 10mUnited Airlines
Tue 11/45:45 pmNRT - STL
1 stop16h 02mUnited Airlines
Deal found 10/30$786
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:05 amSTL - HND
1 stop16h 40mUnited Airlines
Tue 11/412:50 amHND - STL
2 stops24h 49mUnited Airlines
Deal found 10/28$789

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 October 30, 2025.
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 - HND

STLHND

Lambert-St Louis

Sun 11/9

5:24 pm-5:45 pm

1 stop33h 21m

Tokyo Haneda

Wed 11/12

4:25 pm-4:27 pm

1 stop15h 02m

$774

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 11/4

8:00 am-5:45 pm

1 stop18h 45m

Tokyo Haneda

Wed 11/12

4:50 pm-7:16 pm

1 stop17h 26m

$784

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 11/16

6:15 am-3:30 pm

1 stop18h 15m

Tokyo Narita

Wed 12/10

5:45 pm-9:58 pm

1 stop19h 13m

$785

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 11/4

9:00 am-3:40 pm

1 stop15h 40m

Tokyo Narita

Wed 11/12

5:35 pm-9:54 pm

1 stop19h 19m

$785

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 11/12

9:00 am-3:40 pm

1 stop15h 40m

Tokyo Narita

Wed 11/26

5:05 pm-5:39 pm

1 stop15h 34m

$785

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 11/2

5:30 am-2:40 pm

2 stops18h 10m

Tokyo Narita

Tue 11/4

5:45 pm-6:47 pm

1 stop16h 02m

$786

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 11/3

9:00 am-3:40 pm

1 stop15h 40m

Tokyo Narita

Wed 11/5

5:35 pm-4:28 pm

1 stop13h 53m

$786

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 12/8

4:05 pm-4:40 pm

1 stop33h 35m

Tokyo Haneda

Sat 12/20

6:50 pm-10:43 pm

2 stops18h 53m

$790

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Thu 1/15

6:55 pm-3:20 pm

2 stops29h 25m

Tokyo Haneda

Fri 1/30

4:25 pm-8:39 pm

2 stops19h 14m

$800

ChicagoNagoya

ORD - NGO

ORDNGO

Chicago O'Hare Intl

Wed 2/25

2:35 pm-2:10 pm

1 stop32h 35m

Nagoya Chubu Centrair Intl

Wed 3/11

3:15 pm-1:55 pm

1 stop36h 40m

$868

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 $644). Flying from Illinois to Japan in July is currently the most expensive (average of $984). 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 October 30, 2025.

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 19% 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 December 16, 2024.

Travelers seeking maximum savings on their Illinois to Japan flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday mornings 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 24h 35m. Fly via United Airlines, Cathay Pacific, or ANA to get the fastest option. Illinois and Japan are separated by a distance of 6476 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 $327 on Alaska Airlines. Other airlines that offer cheap prices include Air Canada from $364 and ANA from $514 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 $644). Flying from Illinois to Japan in July is currently the most expensive (average of $984). 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 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$491Average$1,676FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$709Average$943FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$781Average$1,590FlexibilityNo cancel feeOn-time69%
DeltaCheapest$820Average$1,197FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$826Average$1,204FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$880Average$891FlexibilityNo cancel feeOn-time85%
EVA AirCheapest$978Average$1,325FlexibilityNo cancel feeOn-time74%
ANACheapest$1,102Average$1,715FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$1,109Average$1,647FlexibilityNo cancel feeOn-time79%

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