Cheap flights from Illinois to Japan from $329

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Japan departing on 9/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

American Airlines Logo
8:50 am - 3:00 pmSTL-NRT
16h 10m1 stop
American Airlines Logo
6:30 pm - 10:50 pmNRT-STL
18h 20m1 stop
$593American Airlines
Find Deal
Tue, Sep 16 - Fri, Oct 3
American Airlines Logo
5:15 am - 3:00 pmSTL-NRT
19h 45m1 stop
American Airlines Logo
6:30 pm - 10:50 pmNRT-STL
18h 20m1 stop
$633American Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 12
American Airlines Logo
6:10 am - 3:00 pmSTL-NRT
18h 50m2 stops
American Airlines Logo
6:30 pm - 10:50 pmNRT-STL
18h 20m1 stop
$638American Airlines
Find Deal
Tue, Sep 9 - Wed, Sep 17
Air Canada Logo
5:18 pm - 4:40 pmSTL-HND
32h 22m2 stops
Air Canada Logo
6:50 pm - 12:20 pmHND-STL
32h 30m2 stops
$643Air Canada
Find Deal
Wed, Jan 7 - Sat, Jan 17
Air Canada Logo
5:24 pm - 4:30 pmSTL-NRT
32h 06m2 stops
Air Canada Logo
6:45 pm - 10:51 amNRT-STL
31h 06m2 stops
$647Air Canada
Find Deal
Tue, Nov 4 - Sat, Nov 22
Hawaiian Airlines Logo
6:00 am - 4:00 pmSTL-NRT
20h 00m1 stop
Hawaiian Airlines Logo
6:30 pm - 11:59 pmNRT-STL
19h 29m1 stop
$652Hawaiian Airlines
Find Deal
Sat, Sep 20 - Mon, Oct 27
Alaska Airlines Logo
6:00 am - 4:00 pmSTL-NRT
20h 00m1 stop
Alaska Airlines Logo
6:25 pm - 12:03 amNRT-STL
19h 38m1 stop
$657Alaska Airlines
Find Deal
Sat, Sep 13 - Sun, Oct 5
Alaska Airlines Logo
6:30 pm - 4:00 pmSTL-NRT
31h 30m1 stop
Alaska Airlines Logo
6:25 pm - 11:59 pmNRT-STL
19h 34m1 stop
$666Alaska Airlines
Find Deal
Thu, Sep 4 - Thu, Sep 11
Cathay Pacific Logo
4:00 pm - 3:30 pmORD-FUK
33h 30m1 stop
Cathay Pacific Logo
4:40 pm - 2:25 pmFUK-ORD
35h 45m1 stop
$668Cathay Pacific
Find Deal
Wed, Oct 1 - Tue, Oct 14
Cathay Pacific Logo
4:00 pm - 3:30 pmORD-FUK
33h 30m1 stop
Cathay Pacific Logo
4:40 pm - 2:25 pmFUK-ORD
35h 45m1 stop
$669Cathay Pacific
Find Deal
Wed, Oct 1 - Tue, Oct 14

Cathay Pacific flights from Illinois to Japan

Our best Cathay Pacific deals on Illinois to Japan flight tickets
Cathay Pacific
Oct 1
ORD4:00 pmChicago O'Hare Intl
33h 30m
1 stop
FUK3:30 pmFukuoka
Oct 14
FUK4:40 pmFukuoka
35h 45m
1 stop
ORD2:25 pmChicago O'Hare Intl
Cathay Pacific
Oct 1
ORD4:00 pmChicago O'Hare Intl
33h 30m
1 stop
FUK3:30 pmFukuoka
Oct 14
FUK4:40 pmFukuoka
35h 45m
1 stop
ORD2:25 pmChicago O'Hare Intl
Cathay Pacific
Nov 3
ORD2:40 pmChicago O'Hare Intl
39h 25m
1 stop
KIX9:05 pmOsaka Kansai Intl
Nov 24
KIX4:55 pmOsaka Kansai Intl
35h 05m
1 stop
ORD1:00 pmChicago O'Hare Intl

EVA Air flights from Illinois to Japan

Our best EVA Air deals on Illinois to Japan flight tickets
EVA Air
Aug 26
ORD12:30 amChicago O'Hare Intl
29h 35m
1 stop
HND8:05 pmTokyo Haneda
Sep 3
HND10:50 amTokyo Haneda
23h 55m
1 stop
ORD8:45 pmChicago O'Hare Intl
EVA Air
Sep 16
ORD12:30 amChicago O'Hare Intl
27h 50m
1 stop
FUK6:20 pmFukuoka
Sep 24
FUK12:20 pmFukuoka
22h 25m
1 stop
ORD8:45 pmChicago O'Hare Intl
EVA Air
Aug 25
ORD12:30 amChicago O'Hare Intl
21h 40m
1 stop
KIX12:10 pmOsaka Kansai Intl
Sep 9
KIX11:10 amOsaka Kansai Intl
23h 35m
1 stop
ORD8:45 pmChicago O'Hare Intl

momondo 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
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

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 9/16

8:50 am-3:00 pm

1 stop16h 10m

Tokyo Narita

Fri 10/3

6:30 pm-10:50 pm

1 stop18h 20m

$593

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 9/1

5:15 am-3:00 pm

1 stop19h 45m

Tokyo Narita

Fri 9/12

6:30 pm-10:50 pm

1 stop18h 20m

$633

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 9/9

6:10 am-3:00 pm

2 stops18h 50m

Tokyo Narita

Wed 9/17

6:30 pm-10:50 pm

1 stop18h 20m

$638

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 1/7

5:18 pm-4:40 pm

2 stops32h 22m

Tokyo Haneda

Sat 1/17

6:50 pm-12:20 pm

2 stops32h 30m

$643

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 11/4

5:24 pm-4:30 pm

2 stops32h 06m

Tokyo Narita

Sat 11/22

6:45 pm-10:51 am

2 stops31h 06m

$647

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 9/20

6:00 am-4:00 pm

1 stop20h 00m

Tokyo Narita

Mon 10/27

6:30 pm-11:59 pm

1 stop19h 29m

$652

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 9/13

6:00 am-4:00 pm

1 stop20h 00m

Tokyo Narita

Sun 10/5

6:25 pm-12:03 am

1 stop19h 38m

$657

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Thu 9/4

6:30 pm-4:00 pm

1 stop31h 30m

Tokyo Narita

Thu 9/11

6:25 pm-11:59 pm

1 stop19h 34m

$666

ChicagoFukuoka

ORD - FUK

ORDFUK

Chicago O'Hare Intl

Wed 10/1

4:00 pm-3:30 pm

1 stop33h 30m

Fukuoka

Tue 10/14

4:40 pm-2:25 pm

1 stop35h 45m

$668

ChicagoFukuoka

ORD - FUK

ORDFUK

Chicago O'Hare Intl

Wed 10/1

4:00 pm-3:30 pm

1 stop33h 30m

Fukuoka

Tue 10/14

4:40 pm-2:25 pm

1 stop35h 45m

$669

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Japan from

How to get the cheapest flight ticket from Illinois to Japan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Japan?

The month of September is, on average, the cheapest month to fly to Japan from Illinois, with most prices found around $1,118. If you aren’t able to travel to Japan during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,188.

What is the cheapest day to depart on your flight to Japan?

On average, the least expensive day to fly to Japan from Illinois is on a Monday. momondo users have found tickets for Monday departures for as low as $1,159. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Illinois to Japan on a Saturday will generally be more expensive and average around $1,706. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Japan?

Flying to Japan from Illinois in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,223 when looking at flights departing in the afternoon. In the evening is when there is more demand to fly to Japan, so prices are often more expensive at around $1,700 per ticket.

What is the cheapest Illinois to Japan flight route?

Fly from Chicago O'Hare Intl to Tokyo Haneda for the best Illinois - Japan flight prices

How far in advance should I book a flight to Japan?

You are more likely to see cheaper flights to Japan from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Japan for around $1,306 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Japan from Illinois for as low as $1,073 on momondo.

What cabin class options are available on Illinois to Japan flights?

There are 4 cabin classes available to choose from on Illinois to Japan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Japan flights?

You could potentially save up to 13% on your flight if you consider stops on a Illinois to Japan flight.

Cheap Illinois to Japan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Japan

Best Price Found

$329

Fastest flight time

13h 05m

Direct flights

Every day

Airports in Japan

5 airports
The best one-way flight to Japan from Illinois in the past 72 hours is $329. The best round-trip flight deal from Illinois to Japan found on momondo in the last 72 hours is $593.
The fastest flight from Illinois to Japan takes 13h 05m
Direct flights go from Illinois to Japan every day.
There are 5 airports near Japan: Tokyo Narita (NRT), Osaka Itami (ITM), Osaka Kansai Intl (KIX), Fukuoka (FUK), Tokyo Haneda (HND)
  • When did momondo last update prices for flights from Illinois to Japan?

    Prices for flights from Illinois to Japan are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Japan?

  • How old do you have to be to fly from Illinois to Japan?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Japan.

  • What documentation or ID do you need to fly to Japan?

    The travel and health documents you'll need for your trip to Japan may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Japan. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Japan?

Best airlines flying from Illinois to Japan

Compare and see reviews for airlines that fly from Illinois to Japan with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $491Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Cathay PacificPriceFrom $740Free CancellationRating
7.6
969 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $817Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
DeltaPriceFrom $820Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Air CanadaPriceFrom $826Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights
Hawaiian AirlinesPriceFrom $880Free CancellationRating
7.8
2,665 reviews
Search Hawaiian Airlines flights
ANAPriceFrom $983Free CancellationRating
8.4
933 reviews
Search ANA flights
EVA AirPriceFrom $1,005Free CancellationRating
8.4
1,232 reviews
Search EVA Air flights
Japan AirlinesPriceFrom $1,079Free CancellationRating
8.3
1,549 reviews
Search Japan Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Japan?

It is quick and easy to find Illinois to Japan flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Japan that suits you.

Can I find flights from Illinois to Japan with flexible booking policies on momondo?

Flights from Illinois to Japan with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Illinois to Japan?

momondo provides multiple filters to help you find the best flight to Japan from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Illinois to Japan right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Japan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Sat 8/23
Sat 8/30

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