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Cheap flights from Illinois to Osaka from $354

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 2/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Osaka

Cheap round-trip flights

Enter your travel dates to find the best prices.
ANA Logo
11:20 am - 6:55 pm
STL
-
ITM
40h 35m2 stops
ANA Logo
1:00 pm - 7:14 pm
ITM
-
STL
21h 14m2 stops
$735ANA
Tue, Feb 3 - Thu, Feb 19
American Airlines Logo
7:04 am - 6:45 pm
STL
-
ITM
20h 41m2 stops
American Airlines Logo
1:40 pm - 7:25 pm
ITM
-
STL
20h 45m2 stops
$748American Airlines
Tue, Feb 3 - Thu, Feb 19
Japan Airlines Logo
8:31 am - 7:55 pm
STL
-
ITM
20h 24m2 stops
Japan Airlines Logo
7:05 am - 1:54 pm
ITM
-
STL
21h 49m2 stops
$829Japan Airlines
Mon, Feb 2 - Wed, Feb 18
Japan Airlines Logo
8:31 am - 7:55 pm
STL
-
ITM
20h 24m2 stops
Japan Airlines Logo
2:40 pm - 6:02 pm
ITM
-
STL
18h 22m2 stops
$831Japan Airlines
Mon, Feb 2 - Thu, Feb 19
Multiple Airlines Logo
8:00 am - 8:05 pm
ORD
-
ITM
21h 05m2 stops
Multiple Airlines Logo
4:00 pm - 7:45 pm
ITM
-
ORD
18h 45m2 stops
$938Multiple Airlines
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
7:10 am - 8:20 pm
ORD
-
ITM
22h 10m2 stops
Multiple Airlines Logo
11:30 am - 7:45 pm
ITM
-
ORD
23h 15m2 stops
$956Multiple Airlines
Sun, Jan 25 - Sun, Feb 1
Air Canada Logo
3:35 pm - 6:55 pm
ORD
-
ITM
36h 20m2 stops
Air Canada Logo
4:00 pm - 7:40 pm
ITM
-
ORD
18h 40m2 stops
$966Air Canada
Sat, Jan 24 - Sat, Jan 31
Air Canada Logo
8:00 am - 7:10 pm
ORD
-
ITM
20h 10m2 stops
Air Canada Logo
4:00 pm - 7:45 pm
ITM
-
ORD
18h 45m2 stops
$972Air Canada
Fri, Jan 23 - Mon, Feb 16
United Airlines Logo
6:30 am - 6:10 pm
STL
-
ITM
44h 40m2 stops
United Airlines Logo
1:00 pm - 3:38 pm
ITM
-
STL
41h 38m2 stops
$1,046United Airlines
Tue, Feb 10 - Tue, Feb 17
United Airlines Logo
7:06 pm - 5:05 pm
STL
-
ITM
31h 59m2 stops
United Airlines Logo
12:00 pm - 8:21 pm
ITM
-
STL
46h 21m2 stops
$1,221United Airlines
Mon, Jun 1 - Mon, Jun 15

American Airlines flights from Illinois to Osaka Itami Airport

Our best American Airlines deals on Illinois to Osaka Itami Airport flight tickets
American Airlines
Feb 3
STL7:04 amLambert-St Louis
20h 41m
2 stops
ITM6:45 pmOsaka Itami
Feb 19
ITM1:40 pmOsaka Itami
20h 45m
2 stops
STL7:25 pmLambert-St Louis
$748
Find similar
American Airlines
Feb 9
STL7:04 amLambert-St Louis
20h 41m
2 stops
ITM6:45 pmOsaka Itami
Feb 16
ITM2:40 pmOsaka Itami
18h 18m
2 stops
STL5:58 pmLambert-St Louis
$853
Find similar
American Airlines
Jan 21
ORD7:00 amChicago O'Hare Intl
21h 55m
2 stops
ITM7:55 pmOsaka Itami
Feb 4
ITM3:25 pmOsaka Itami
19h 04m
2 stops
ORD7:29 pmChicago O'Hare Intl
$975
Find similar

Japan Airlines flights from Illinois to Osaka Itami Airport

Our best Japan Airlines deals on Illinois to Osaka Itami Airport flight tickets
Japan Airlines
Feb 2
STL8:31 amLambert-St Louis
20h 24m
2 stops
ITM7:55 pmOsaka Itami
Feb 18
ITM7:05 amOsaka Itami
21h 49m
2 stops
STL1:54 pmLambert-St Louis
$829
Find similar
Japan Airlines
Feb 2
STL8:31 amLambert-St Louis
20h 24m
2 stops
ITM7:55 pmOsaka Itami
Feb 19
ITM2:40 pmOsaka Itami
18h 22m
2 stops
STL6:02 pmLambert-St Louis
$831
Find similar
Japan Airlines
Feb 15
STL6:00 amLambert-St Louis
22h 55m
2 stops
ITM7:55 pmOsaka Itami
Feb 28
ITM7:05 amOsaka Itami
25h 57m
2 stops
STL6:02 pmLambert-St Louis
$864
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 December 28, 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

Tue 2/3

11:20 am-6:55 pm

2 stops40h 35m

Osaka Itami

Thu 2/19

1:00 pm-7:14 pm

2 stops21h 14m

$735

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 2/3

7:04 am-6:45 pm

2 stops20h 41m

Osaka Itami

Thu 2/19

1:40 pm-7:25 pm

2 stops20h 45m

$748

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 2/2

8:31 am-7:55 pm

2 stops20h 24m

Osaka Itami

Wed 2/18

7:05 am-1:54 pm

2 stops21h 49m

$829

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 2/2

8:31 am-7:55 pm

2 stops20h 24m

Osaka Itami

Thu 2/19

2:40 pm-6:02 pm

2 stops18h 22m

$831

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Mon 2/9

8:00 am-8:05 pm

2 stops21h 05m

Osaka Itami

Mon 2/16

4:00 pm-7:45 pm

2 stops18h 45m

$938

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Sun 1/25

7:10 am-8:20 pm

2 stops22h 10m

Osaka Itami

Sun 2/1

11:30 am-7:45 pm

2 stops23h 15m

$956

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Sat 1/24

3:35 pm-6:55 pm

2 stops36h 20m

Osaka Itami

Sat 1/31

4:00 pm-7:40 pm

2 stops18h 40m

$966

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Fri 1/23

8:00 am-7:10 pm

2 stops20h 10m

Osaka Itami

Mon 2/16

4:00 pm-7:45 pm

2 stops18h 45m

$972

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 2/10

6:30 am-6:10 pm

2 stops44h 40m

Osaka Itami

Tue 2/17

1:00 pm-3:38 pm

2 stops41h 38m

$1,046

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 6/1

7:06 pm-5:05 pm

2 stops31h 59m

Osaka Itami

Mon 6/15

12:00 pm-8:21 pm

2 stops46h 21m

$1,221

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 airline that flies from Illinois to Osaka Itami?

WestJet is the most popular carrier operating from Illinois to Osaka Itami

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

Fastest flight time

17h 20m

Direct flights

None
The fastest flight from Illinois to Osaka Itami Airport takes 17h 20m
There are no direct flights from Illinois to Osaka Itami Airport. There are no popular flight routes from Illinois to 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
Air CanadaPriceFrom $1,025Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
ANAPriceFrom $1,174Free CancellationRating
8.4
1,049 reviews
Search ANA 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.

An easier way to manage your Osaka Itami Airport trip

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