HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Japan

$349+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FUK
Mar 2 — Mar 91
Mon 3/2
Mon 3/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Japan with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 31, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:51 pm
STL
-
NRT
2 stops32h 34m
Multiple Airlines
Thu 3/52:30 pm
NRT
-
STL
1 stop31h 32m
Multiple Airlines
Deal found 1/31$738
This FlightHub deal was found by Cheapflights users on 1/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/177:41 am
STL
-
HND
1 stop22h 24m
ANA
Wed 2/256:20 pm
HND
-
STL
1 stop15h 54m
ANA
Deal found 1/31$739
This KAYAK deal was found by Cheapflights users on 1/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:41 am
STL
-
NRT
1 stop15h 59m
ANA
Wed 2/254:45 pm
NRT
-
STL
1 stop14h 59m
ANA
Deal found 1/31$742
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:05 am
STL
-
HND
1 stop18h 40m
ANA
Wed 2/410:50 am
HND
-
STL
1 stop20h 02m
ANA
Deal found 1/29$743
This United Airlines deal was found by Cheapflights users on 1/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:41 am
STL
-
NRT
1 stop15h 59m
United Airlines
Wed 2/255:35 pm
NRT
-
STL
2 stops19h 39m
United Airlines
Deal found 1/31$747
This United Airlines deal was found by Cheapflights users on 1/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/179:55 am
STL
-
HND
1 stop16h 50m
United Airlines
Wed 2/257:40 pm
HND
-
STL
2 stops18h 19m
United Airlines
Deal found 1/31$751
This Delta deal was found by Cheapflights users on 1/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:50 pm
STL
-
HND
2 stops30h 30m
Delta
Wed 2/255:20 pm
HND
-
STL
2 stops21h 16m
Delta
Deal found 1/31$752
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:51 pm
STL
-
NRT
2 stops32h 34m
Multiple Airlines
Tue 3/102:30 pm
NRT
-
STL
1 stop22h 49m
Multiple Airlines
Deal found 1/31$752
This KAYAK deal was found by Cheapflights users on 1/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/38:05 am
STL
-
HND
1 stop18h 40m
ANA
Thu 2/54:50 pm
HND
-
STL
1 stop17h 37m
ANA
Deal found 1/30$764
This FlightHub deal was found by Cheapflights users on 1/30. 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 2/238:17 am
STL
-
HND
1 stop18h 28m
ANA
Thu 3/56:20 pm
HND
-
STL
1 stop31h 16m
ANA
Deal found 1/30$765
This Air Canada deal was found by Cheapflights users on 1/30. 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.
Tue 2/34:05 pm
STL
-
NRT
2 stops33h 15m
Air Canada
Wed 2/116:45 pm
NRT
-
STL
1 stop35h 44m
Air Canada
Deal found 1/30$765
This United Airlines deal was found by Cheapflights users on 1/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/215:29 pm
STL
-
HND
1 stop20h 21m
United Airlines
Tue 3/106:20 pm
HND
-
STL
1 stop16h 47m
United Airlines
Deal found 1/31$766

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 January 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$739
(FlightHub)

One-way from

$349
(Air Canada)

Popular in

June

Cheapest in

September

Average price

$1,006

Good round-trip deal

$969 or less

Good one-way deal

$528 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. 15% potential increase in price ($235 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 31, 2026.
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 - NRT

STLNRT

Lambert-St Louis

Tue 2/17

8:41 am-3:40 pm

1 stop15h 59m

Tokyo Narita

Wed 2/25

5:35 pm-10:14 pm

2 stops19h 39m

$747

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 2/17

5:50 pm-3:20 pm

2 stops30h 30m

Tokyo Haneda

Wed 2/25

5:20 pm-11:36 pm

2 stops21h 16m

$752

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 2/21

2:51 pm-2:25 pm

2 stops32h 34m

Tokyo Narita

Tue 3/10

2:30 pm-11:19 pm

1 stop22h 49m

$752

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 2/24

8:30 am-4:50 pm

1 stop17h 20m

Tokyo Haneda

Tue 3/10

6:20 pm-9:07 pm

1 stop16h 47m

$766

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 2/23

8:30 am-4:50 pm

1 stop17h 20m

Tokyo Haneda

Tue 3/10

6:20 pm-9:07 pm

1 stop16h 47m

$766

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/22

8:30 am-4:50 pm

1 stop17h 20m

Tokyo Haneda

Thu 3/5

6:20 pm-10:59 pm

1 stop19h 39m

$766

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 2/22

8:41 am-3:40 pm

1 stop15h 59m

Tokyo Narita

Fri 3/6

4:45 pm-10:25 pm

1 stop20h 40m

$767

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/23

7:41 am-3:00 pm

1 stop16h 19m

Tokyo Narita

Fri 3/6

4:45 pm-10:25 pm

1 stop20h 40m

$767

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/23

8:17 am-3:00 pm

1 stop15h 43m

Tokyo Narita

Tue 3/10

5:45 pm-10:16 pm

1 stop18h 31m

$767

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 2/10

6:00 am-3:30 pm

1 stop18h 30m

Tokyo Narita

Thu 2/19

4:45 pm-4:44 pm

1 stop14h 59m

$781

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 60 results
1
2
3
...
6

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 June is currently the most expensive (average of $1,025). 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 January 31, 2026.

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 49% 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 January 24, 2026.

Travelers seeking maximum savings on their Illinois to Japan flight should consider departing on Monday 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 59m. Fly via United Airlines, ANA, or Air Canada 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 $154 on United Airlines. Other airlines that offer cheap prices include Air Canada from $412 and Cathay Pacific from $422 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 June is currently the most expensive (average of $1,025). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Japan

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Haneda flights
John F Kennedy Intl to Haneda flights
Los Angeles to Narita flights
Newark to Narita flights
Seattle to Narita flights
Newark to Haneda flights
San Francisco to Haneda flights
John F Kennedy Intl to Narita flights
Dallas/Fort Worth to Narita flights
San Francisco to Narita flights
Los Angeles to Manila flights
Dallas/Fort Worth to Haneda flights
Seattle to Haneda flights
O'Hare Intl to Narita flights
San Francisco to New Delhi flights
LaGuardia to Haneda flights
LaGuardia to Narita flights
Dulles Intl to Haneda flights
Los Angeles to Suvarnabhumi flights
O'Hare Intl to Haneda flights
Hobby to Haneda flights
San Francisco to Manila flights
John F Kennedy Intl to Suvarnabhumi flights
Los Angeles to Incheon Intl flights
Denver to Narita flights
Boston to Narita flights
John F Kennedy Intl to New Delhi flights
John F Kennedy Intl to Incheon Intl flights
Seattle to Suvarnabhumi flights
Ontario to Narita flights
Honolulu to Haneda flights
Newark to New Delhi flights
George Bush Intcntl to Haneda flights
San Francisco to Taiwan Taoyuan Intl flights
Atlanta to Haneda flights
Dulles Intl to Narita flights
Los Angeles to Ho Chi Minh City flights
Seattle to Incheon Intl flights
San Francisco to Hong Kong flights
Newark to Suvarnabhumi flights
John F Kennedy Intl to Hong Kong flights
San Francisco to Ho Chi Minh City flights
Los Angeles to Taiwan Taoyuan Intl flights
Newark to Mumbai flights
San Francisco to Suvarnabhumi flights
Honolulu to Narita flights
Dallas/Fort Worth to Incheon Intl flights
Dulles Intl to Suvarnabhumi flights
Dallas/Fort Worth to Suvarnabhumi flights
Dallas/Fort Worth to Hyderabad flights

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 January 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$613Average$1,325FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$709Average$930FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$781Average$1,412FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$804Average$1,249FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$880Average$965FlexibilityNo cancel feeOn-time85%
ANACheapest$915Average$1,612FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$939Average$1,579FlexibilityNo cancel feeOn-time79%
EVA AirCheapest$978Average$1,334FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,001Average$1,676FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.