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Cheap flights from Illinois to Osaka from $455

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 Osaka departing on 8/23. 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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0 bags

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Find the cheapest flights from Illinois to Osaka

Cheap round-trip flights

Air Canada Logo
4:05 pm - 8:20 pmSTL-ITM
37h 15m2 stops
Air Canada Logo
4:00 pm - 3:29 pmITM-STL
38h 29m2 stops
$715Air Canada
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Fri, Dec 5 - Thu, Dec 11
Japan Airlines Logo
7:23 am - 8:35 amSTL-ITM
35h 12m2 stops
Japan Airlines Logo
8:30 am - 1:31 pmITM-STL
19h 01m2 stops
$887Japan Airlines
Find Deal
Sat, Sep 20 - Wed, Sep 24
Japan Airlines Logo
7:23 am - 8:35 amSTL-ITM
35h 12m2 stops
Japan Airlines Logo
8:30 am - 1:31 pmITM-STL
19h 01m2 stops
$888Japan Airlines
Find Deal
Sat, Sep 20 - Wed, Sep 24
Logo
10:00 am - 7:25 amORD-ITM
31h 25m2 stops
Logo
3:00 pm - 12:03 amITM-ORD
23h 03m2 stops
$896
Find Deal
Sat, Sep 20 - Sat, Sep 27
ANA Logo
12:40 pm - 7:10 pmORD-ITM
16h 30m1 stop
ANA Logo
6:00 pm - 5:00 amITM-ORD
25h 00m2 stops
$1,092ANA
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Mon, Sep 15 - Wed, Sep 24
ANA Logo
11:50 am - 6:55 pmORD-ITM
17h 05m1 stop
ANA Logo
8:20 pm - 5:00 amITM-ORD
22h 40m2 stops
$1,093ANA
Find Deal
Mon, Sep 15 - Wed, Sep 24
United Airlines Logo
5:45 pm - 5:05 pmORD-ITM
33h 20m1 stop
United Airlines Logo
12:00 pm - 8:40 amITM-ORD
34h 40m1 stop
$1,112United Airlines
Find Deal
Tue, Oct 7 - Thu, Oct 16
United Airlines Logo
6:00 am - 5:05 pmORD-ITM
21h 05m2 stops
United Airlines Logo
12:00 pm - 8:40 amITM-ORD
34h 40m1 stop
$1,116United Airlines
Find Deal
Tue, Oct 7 - Thu, Oct 16
American Airlines Logo
1:05 am - 6:40 pmORD-ITM
27h 35m1 stop
American Airlines Logo
8:30 am - 1:44 pmITM-ORD
19h 14m2 stops
$1,122American Airlines
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Sun, Aug 31 - Tue, Sep 30
American Airlines Logo
7:18 am - 7:55 pmORD-ITM
21h 37m2 stops
American Airlines Logo
8:30 am - 7:35 amITM-ORD
14h 05m1 stop
$1,216American Airlines
Find Deal
Fri, Jan 23 - Sun, Feb 8

Air Canada flights from Illinois to Osaka Itami Airport

Our best Air Canada deals on Illinois to Osaka Itami Airport flight tickets
Air Canada
Dec 5
STL4:05 pmLambert-St Louis
37h 15m
2 stops
ITM8:20 pmOsaka Itami
Dec 11
ITM4:00 pmOsaka Itami
38h 29m
2 stops
STL3:29 pmLambert-St Louis
$715
Find similar
Air Canada
Oct 28
ORD8:00 amChicago O'Hare Intl
21h 10m
2 stops
ITM7:10 pmOsaka Itami
Nov 4
ITM3:00 pmOsaka Itami
19h 30m
2 stops
ORD7:30 pmChicago O'Hare Intl
$1,017
Find similar
Air Canada
Oct 28
ORD8:00 amChicago O'Hare Intl
21h 10m
2 stops
ITM7:10 pmOsaka Itami
Nov 4
ITM3:00 pmOsaka Itami
19h 30m
2 stops
ORD7:30 pmChicago O'Hare Intl
$1,065
Find similar

American Airlines flights from Illinois to Osaka Itami Airport

Our best American Airlines deals on Illinois to Osaka Itami Airport flight tickets
American Airlines
Aug 31
ORD1:05 amChicago O'Hare Intl
27h 35m
1 stop
ITM6:40 pmOsaka Itami
Sep 30
ITM8:30 amOsaka Itami
19h 14m
2 stops
ORD1:44 pmChicago O'Hare Intl
$1,122
Find similar
American Airlines
Jan 23
ORD7:18 amChicago O'Hare Intl
21h 37m
2 stops
ITM7:55 pmOsaka Itami
Feb 8
ITM8:30 amOsaka Itami
14h 05m
1 stop
ORD7:35 amChicago O'Hare Intl
$1,216
Find similar
American Airlines
Sep 24
ORD1:05 amChicago O'Hare Intl
27h 35m
1 stop
ITM6:40 pmOsaka Itami
Oct 6
ITM1:30 pmOsaka Itami
20h 15m
2 stops
ORD7:45 pmChicago O'Hare Intl
$1,222
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Osaka Itami Airport 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 7, 2025.
Use the filters below to find and compare flights from Illinois to Osaka Itami Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Fri 12/5

4:05 pm-8:20 pm

2 stops37h 15m

Osaka Itami

Thu 12/11

4:00 pm-3:29 pm

2 stops38h 29m

$715

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sat 9/20

7:23 am-8:35 am

2 stops35h 12m

Osaka Itami

Wed 9/24

8:30 am-1:31 pm

2 stops19h 01m

$887

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sat 9/20

7:23 am-8:35 am

2 stops35h 12m

Osaka Itami

Wed 9/24

8:30 am-1:31 pm

2 stops19h 01m

$888

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Sat 9/20

10:00 am-7:25 am

2 stops31h 25m

Osaka Itami

Sat 9/27

3:00 pm-12:03 am

2 stops23h 03m

$896

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Mon 9/15

12:40 pm-7:10 pm

1 stop16h 30m

Osaka Itami

Wed 9/24

6:00 pm-5:00 am

2 stops25h 00m

$1,092

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Mon 9/15

11:50 am-6:55 pm

1 stop17h 05m

Osaka Itami

Wed 9/24

8:20 pm-5:00 am

2 stops22h 40m

$1,093

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Tue 10/7

5:45 pm-5:05 pm

1 stop33h 20m

Osaka Itami

Thu 10/16

12:00 pm-8:40 am

1 stop34h 40m

$1,112

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Tue 10/7

6:00 am-5:05 pm

2 stops21h 05m

Osaka Itami

Thu 10/16

12:00 pm-8:40 am

1 stop34h 40m

$1,116

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Sun 8/31

1:05 am-6:40 pm

1 stop27h 35m

Osaka Itami

Tue 9/30

8:30 am-1:44 pm

2 stops19h 14m

$1,122

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Fri 1/23

7:18 am-7:55 pm

2 stops21h 37m

Osaka Itami

Sun 2/8

8:30 am-7:35 am

1 stop14h 05m

$1,216

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 Osaka from

How to get the cheapest flight ticket from Illinois to Osaka Itami Airport

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 day to depart on your flight to Osaka Itami Airport?

The cheapest day to depart on your flight to Osaka Itami Airport is on a Wednesday when prices can be found for as low as $1,227. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Osaka Itami Airport is Saturday, with ticket prices averaging around $2,151.

What is the cheapest time of day to depart on your flight to Osaka Itami Airport?

Flying to Osaka Itami Airport from Illinois in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,224 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $1,679.

Cheap Illinois to Osaka Itami Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Osaka Itami Airport

Best Price Found

$455

Fastest flight time

16h 05m

Direct flights

None
The best one-way flight to Osaka Itami Airport from Illinois in the past 72 hours is $455. The best round-trip flight deal from Illinois to Osaka Itami Airport found on momondo in the last 72 hours is $715.
The fastest flight from Illinois to Osaka Itami Airport takes 16h 05m
There are no direct flights from Illinois to Osaka Itami Airport. Popular non-direct routes for this connection are Lambert-St Louis Airport - Osaka Itami Airport and Chicago O'Hare Intl Airport - Osaka Itami Airport.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Osaka Itami Airport?

    Prices for flights from Illinois to Osaka Itami Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Osaka Itami Airport?

  • How old do you have to be to fly from Illinois to Osaka Itami Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Osaka Itami Airport.

  • What documentation or ID do you need to fly to Osaka Itami Airport?

    The travel and health documents required for your trip to Osaka Itami Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Osaka Itami Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Illinois to Osaka Itami Airport

Compare and see reviews for airlines that fly from Illinois to Osaka Itami Airport with momondo
Airline
Rating
Free Cancellation
Price
ANAPriceFrom $983Free CancellationRating
8.4
926 reviews
Search ANA flights
Air CanadaPriceFrom $1,025Free CancellationRating
7.1
9,893 reviews
Search Air Canada flights

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Nishinomiya

Why use momondo?

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

It is quick and easy to find Illinois to Osaka 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 Osaka that suits you.

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

momondo does allow users to show only those flights to Osaka from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Illinois to Osaka flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Osaka from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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