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$458+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HND
Jul 14 — Jul 211
Tue 7/14
Tue 7/21
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 June 14, 2026.

This SmartFares deal was found by Cheapflights users on 6/10. 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.
Tue 9/13:04 pm
STL
-
NRT
1 stop34h 56m
Multiple Airlines
Thu 9/106:00 pm
NRT
-
STL
1 stop19h 59m
Multiple Airlines
Deal found 6/10$887
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Tue 9/112:59 pm
STL
-
HND
1 stop18h 16m
ANA
Thu 9/1010:40 am
HND
-
STL
1 stop15h 17m
ANA
Deal found 6/10$890
This Justfly.com deal was found by Cheapflights users on 6/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:59 pm
STL
-
HND
1 stop36h 26m
ANA
Wed 10/75:15 pm
HND
-
STL
1 stop15h 01m
ANA
Deal found 6/10$895
This Justfly.com deal was found by Cheapflights users on 6/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:15 am
STL
-
NRT
1 stop17h 45m
ANA
Tue 10/135:00 pm
NRT
-
STL
1 stop33h 13m
ANA
Deal found 6/10$896
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
STL
-
HND
1 stop19h 50m
American Airlines
Thu 9/104:30 pm
HND
-
STL
1 stop19h 27m
American Airlines
Deal found 6/10$897
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:05 pm
STL
-
HND
1 stop28h 00m
Delta
Thu 11/125:35 pm
HND
-
STL
1 stop18h 02m
Delta
Deal found 6/10$898
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:43 am
STL
-
NRT
1 stop19h 17m
American Airlines
Wed 10/76:30 pm
NRT
-
STL
1 stop19h 11m
American Airlines
Deal found 6/11$898
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:40 pm
STL
-
HND
2 stops21h 45m
United Airlines
Wed 10/73:50 pm
HND
-
STL
2 stops19h 31m
United Airlines
Deal found 6/11$903
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:30 pm
STL
-
NRT
2 stops30h 30m
United Airlines
Wed 10/75:05 pm
NRT
-
STL
1 stop15h 38m
United Airlines
Deal found 6/11$903
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:15 pm
STL
-
NRT
1 stop28h 00m
United Airlines
Tue 11/106:00 pm
NRT
-
STL
1 stop21h 34m
United Airlines
Deal found 6/10$904
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:36 pm
STL
-
NRT
1 stop35h 09m
ANA
Wed 10/75:25 pm
NRT
-
STL
1 stop17h 44m
ANA
Deal found 6/12$920
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
STL
-
HND
1 stop19h 50m
American Airlines
Sun 9/137:45 pm
HND
-
STL
1 stop17h 55m
American Airlines
Deal found 6/10$947

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 June 14, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$887
(SmartFares)

One-way from

$458
(Air Canada)

Popular in

December

Cheapest in

January

Average price

$1,515

Good round-trip deal

$1,112 or less

Good one-way deal

$609 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 ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 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 June 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 - HND

STLHND

Lambert-St Louis

Tue 9/1

6:00 am-4:15 pm

2 stops20h 15m

Tokyo Haneda

Thu 9/10

4:05 pm-8:31 pm

2 stops18h 26m

$903

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 11/1

8:15 pm-3:20 pm

2 stops28h 05m

Tokyo Narita

Thu 11/12

4:45 pm-5:53 pm

1 stop16h 08m

$903

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 9/6

8:42 am-3:25 pm

1 stop16h 43m

Tokyo Narita

Sun 9/13

4:30 pm-11:40 pm

1 stop21h 10m

$998

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 9/7

6:00 am-4:15 pm

2 stops20h 15m

Tokyo Haneda

Mon 9/14

6:25 pm-11:36 pm

2 stops19h 11m

$1,003

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 9/6

10:33 am-4:15 pm

1 stop15h 42m

Tokyo Haneda

Sun 9/13

4:05 pm-8:31 pm

2 stops18h 26m

$1,003

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Fri 9/4

8:42 am-3:00 pm

1 stop16h 18m

Tokyo Narita

Tue 9/15

4:30 pm-10:10 am

2 stops31h 40m

$1,003

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 10/17

12:10 pm-2:55 pm

2 stops36h 45m

Tokyo Narita

Thu 10/29

6:45 pm-3:30 pm

2 stops34h 45m

$1,042
Quickest round-trip

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 8/23

6:20 am-1:05 pm

1 stop16h 45m

Tokyo Haneda

Wed 9/9

4:05 pm-4:45 pm

1 stop14h 40m

$1,088

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Tue 9/1

12:10 pm-8:45 pm

1 stop18h 35m

Osaka Kansai Intl

Tue 9/29

2:15 am-9:30 am

1 stop21h 15m

$1,103

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 9/19

5:10 am-3:00 pm

2 stops19h 50m

Tokyo Narita

Sat 10/3

5:00 pm-9:21 pm

1 stop18h 21m

$1,103

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

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 $1,994). 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 June 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 21% on airfare.

Weekly flight availability from Illinois to Japan

Explore weekly flight availability from Illinois to Japan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 14, 2026.

The most flights from USIL to JP0 are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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 June 13, 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 20h 15m. Fly via Delta, United Airlines, or Air Canada 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 $468 on Air Canada. Other airlines that offer cheap prices include ANA from $486 and Korean Air from $509 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 $1,994). 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 June 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$355Average$1,116FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$696Average$917FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$861Average$1,232FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$893Average$1,452FlexibilityNo cancel feeOn-time69%
ANACheapest$915Average$1,610FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$956Average$1,497FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$978Average$1,265FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,001Average$1,416FlexibilityNo cancel feeOn-time71%

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