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$345+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
ago 16 — ago 231
sab 8/16
sab 8/23
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 agosto 11, 2025.

Round-trip from

$623
(Delta)

One-way from

$345
(Expedia)

Popular in

June

Cheapest in

September

Average price

$1,574

Good round-trip deal

$779 or less

Good one-way deal

$439 or less
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. 10% potential increase in price ($177 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 11, 2025.

This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 9/96:00 amSTL - HND
1 stop17h 05mDelta
gio 9/183:15 pmHND - STL
1 stop20h 41mDelta
Deal found 8/7$623
This Delta deal was found by Cheapflights users on 8/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 9/96:00 amSTL - HND
2 stops20h 15mDelta
mer 9/174:05 pmHND - STL
2 stops22h 33mDelta
Deal found 8/8$628
This Delta deal was found by Cheapflights users on 8/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 9/65:11 pmSTL - HND
1 stop31h 09mDelta
gio 9/114:35 pmHND - STL
1 stop20h 49mDelta
Deal found 8/8$629
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 10/209:15 amSTL - HND
1 stop16h 35mAir Canada
gio 10/236:10 pmHND - STL
2 stops30h 39mAir Canada
Deal found 8/10$648
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 10/204:05 pmSTL - NRT
1 stop33h 35mAir Canada
gio 10/234:55 pmNRT - STL
2 stops31h 54mAir Canada
Deal found 8/10$650
This FlightHub deal was found by Cheapflights users on 8/9. 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.
mer 10/294:05 pmSTL - NRT
1 stop34h 25mAir Canada
lun 11/106:45 pmNRT - STL
2 stops36h 02mAir Canada
Deal found 8/9$654
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 12/66:42 pmSTL - NRT
2 stops30h 48mAir Canada
sab 12/136:45 pmNRT - STL
2 stops34h 40mAir Canada
Deal found 8/10$655
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 12/66:42 pmSTL - HND
2 stops30h 58mAir Canada
sab 12/136:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 8/10$661
This FlightHub deal was found by Cheapflights users on 8/10. 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.
dom 11/94:05 pmSTL - NRT
2 stops33h 15mAir Canada
mer 11/126:45 pmNRT - STL
2 stops36h 01mAir Canada
Deal found 8/10$661
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 11/164:05 pmSTL - NRT
1 stop33h 25mAir Canada
mer 12/106:15 pmNRT - STL
2 stops36h 14mAir Canada
Deal found 8/10$663
This Expedia deal was found by Cheapflights users on 8/9. 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.
ven 12/55:27 pmSTL - HND
2 stops32h 13mAir Canada
ven 12/196:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 8/9$665
This Air Canada deal was found by Cheapflights users on 8/11. 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.
ven 10/245:28 pmSTL - NRT
2 stops32h 12mAir Canada
gio 11/66:45 pmNRT - STL
2 stops35h 44mAir Canada
Deal found 8/11$667

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 agosto 11, 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

mar 9/9

6:00 am-1:05 pm

1 stop17h 05m

Tokyo Haneda

gio 9/18

3:15 pm-9:56 pm

1 stop20h 41m

$623

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

sab 9/6

5:11 pm-2:20 pm

1 stop31h 09m

Tokyo Haneda

gio 9/11

4:35 pm-11:24 pm

1 stop20h 49m

$629

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

lun 10/20

9:15 am-3:50 pm

1 stop16h 35m

Tokyo Haneda

gio 10/23

6:10 pm-10:49 am

2 stops30h 39m

$648

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

lun 10/20

4:05 pm-3:40 pm

1 stop33h 35m

Tokyo Narita

gio 10/23

4:55 pm-10:49 am

2 stops31h 54m

$650

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

ven 1/30

5:18 pm-4:40 pm

2 stops32h 22m

Tokyo Haneda

ven 2/13

6:50 pm-3:21 pm

2 stops35h 31m

$653

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

mer 10/29

4:05 pm-4:30 pm

1 stop34h 25m

Tokyo Narita

lun 11/10

6:45 pm-3:47 pm

2 stops36h 02m

$654

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

sab 12/6

6:42 pm-4:30 pm

2 stops30h 48m

Tokyo Narita

sab 12/13

6:45 pm-2:25 pm

2 stops34h 40m

$655

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

sab 12/6

6:42 pm-4:40 pm

2 stops30h 58m

Tokyo Haneda

sab 12/13

6:50 pm-3:29 pm

1 stop35h 39m

$661

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

dom 11/9

4:05 pm-4:20 pm

2 stops33h 15m

Tokyo Narita

mer 11/12

6:45 pm-3:46 pm

2 stops36h 01m

$661

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

dom 11/16

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

mer 12/10

6:15 pm-3:29 pm

2 stops36h 14m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/8

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, February is the cheapest month in which you can book a flight from Illinois to Japan (average of $886). Flying from Illinois to Japan in December is currently the most expensive (average of $1,623). 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 agosto 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Japan as you normally would.

Reviews of airlines servicing Japan

Get insights into the airlines that provide service to Japan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Japan. Reviews last updated agosto 11, 2025.
Get a feel of what it's like to fly with EVA Air, ANA, and Korean Air from Illinois to Japan by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,228 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,228 reviews
EVA Air
8.4
Very good
1,228 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.4
Very good
929 reviews
EVA Air
8.4
Very good
1,228 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,126 reviews
EVA Air
8.4
Very good
1,228 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,545 reviews
EVA Air
8.4
Very good
1,228 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
760 reviews
EVA Air
8.4
Very good
1,228 reviews

Comfort

8.3

Overall

8.4

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

  • 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 $886). Flying from Illinois to Japan in December is currently the most expensive (average of $1,623). 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 agosto 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$491Average$1,698FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$757Average$1,592FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$775Average$962FlexibilityNo cancel feeOn-time72%
DeltaCheapest$820Average$1,146FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$827Average$1,216FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$880Average$891FlexibilityNo cancel feeOn-time85%
ANACheapest$983Average$1,728FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,005Average$1,325FlexibilityNo cancel feeOn-time74%
Japan AirlinesCheapest$1,079Average$1,712FlexibilityNo cancel feeOn-time79%

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