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Cheap flights from Illinois to Osaka from $301

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 12/5. 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

Enter your travel dates to find the best prices.
Air Canada Logo
4:05 pm - 7:25 pmSTL-KIX
36h 20m2 stops
Air Canada Logo
3:45 pm - 3:29 pmKIX-STL
38h 44m2 stops
$687Air Canada
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Tue, Feb 3 - Thu, Feb 19
United Airlines Logo
6:42 pm - 4:40 pmSTL-KIX
30h 58m2 stops
United Airlines Logo
6:35 pm - 12:15 pmKIX-STL
32h 40m2 stops
$793United Airlines
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Mon, Dec 8 - Fri, Dec 12
Multiple Airlines Logo
4:05 pm - 10:20 pmSTL-KIX
39h 15m2 stops
Multiple Airlines Logo
3:00 pm - 3:29 pmKIX-STL
39h 29m2 stops
$804Multiple Airlines
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Mon, Dec 8 - Sat, Dec 20
ANA Logo
7:41 am - 10:20 pmSTL-KIX
23h 39m2 stops
ANA Logo
2:05 pm - 7:19 pmKIX-STL
20h 14m2 stops
$813ANA
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Sun, Feb 15 - Sat, Feb 28
Multiple Airlines Logo
6:50 am - 8:55 pmORD-KIX
47h 05m2 stops
Multiple Airlines Logo
9:00 am - 12:13 amKIX-ORD
30h 13m2 stops
$830Multiple Airlines
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Thu, Dec 4 - Mon, Dec 15
American Airlines Logo
6:30 am - 6:50 pmSTL-KIX
21h 20m1 stop
American Airlines Logo
5:50 pm - 11:48 pmKIX-STL
20h 58m1 stop
$850American Airlines
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Sun, Feb 15 - Sat, Feb 28
Japan Airlines Logo
6:00 am - 8:25 amSTL-KIX
35h 25m2 stops
Japan Airlines Logo
5:50 pm - 11:48 pmKIX-STL
20h 58m1 stop
$852Japan Airlines
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Sun, Feb 15 - Sat, Feb 28
American Airlines Logo
5:04 pm - 6:50 pmSTL-KIX
34h 46m2 stops
American Airlines Logo
5:50 pm - 11:48 pmKIX-STL
20h 58m1 stop
$855American Airlines
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Tue, Feb 3 - Thu, Feb 19
Japan Airlines Logo
6:05 am - 10:15 pmSTL-KIX
26h 10m2 stops
Japan Airlines Logo
9:10 pm - 2:32 pmKIX-STL
31h 22m2 stops
$876Japan Airlines
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Tue, Mar 24 - Mon, Mar 30
ANA Logo
8:00 am - 7:30 pmSTL-KIX
21h 30m2 stops
ANA Logo
6:45 am - 12:20 pmKIX-STL
19h 35m2 stops
$1,074ANA
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Fri, Apr 10 - Thu, Apr 16

EVA Air flights from Illinois to Osaka Kansai Intl Airport

Our best EVA Air deals on Illinois to Osaka Kansai Intl Airport flight tickets
EVA Air
Nov 12
ORD11:30 pmChicago O'Hare Intl
21h 25m
1 stop
KIX11:55 amOsaka Kansai Intl
Nov 16
KIX6:10 pmOsaka Kansai Intl
40h 25m
1 stop
ORD7:35 pmChicago O'Hare Intl
$974
Find similar
EVA Air
Mar 30
ORD12:30 amChicago O'Hare Intl
26h 45m
1 stop
KIX5:15 pmOsaka Kansai Intl
Apr 14
KIX1:10 pmOsaka Kansai Intl
21h 50m
1 stop
ORD9:00 pmChicago O'Hare Intl
$978
Find similar
EVA Air
Nov 16
ORD11:30 pmChicago O'Hare Intl
19h 25m
1 stop
KIX9:55 amOsaka Kansai Intl
Nov 26
KIX12:55 pmOsaka Kansai Intl
21h 40m
1 stop
ORD7:35 pmChicago O'Hare Intl
$1,012
Find similar

Cathay Pacific flights from Illinois to Osaka Kansai Intl Airport

Our best Cathay Pacific deals on Illinois to Osaka Kansai Intl Airport flight tickets
Cathay Pacific
Feb 24
ORD2:35 pmChicago O'Hare Intl
31h 10m
1 stop
KIX12:45 pmOsaka Kansai Intl
Mar 4
KIX6:05 pmOsaka Kansai Intl
33h 50m
1 stop
ORD12:55 pmChicago O'Hare Intl
$870
Find similar
Cathay Pacific
Feb 24
ORD2:35 pmChicago O'Hare Intl
39h 30m
1 stop
KIX9:05 pmOsaka Kansai Intl
Mar 4
KIX9:25 amOsaka Kansai Intl
42h 30m
1 stop
ORD12:55 pmChicago O'Hare Intl
$877
Find similar
Cathay Pacific
Feb 24
ORD2:35 pmChicago O'Hare Intl
33h 20m
2 stops
KIX2:55 pmOsaka Kansai Intl
Mar 4
KIX6:05 pmOsaka Kansai Intl
33h 50m
1 stop
ORD12:55 pmChicago O'Hare Intl
$887
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Osaka Kansai Intl 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 November 6, 2025.
Use the filters below to find and compare flights from Illinois to Osaka Kansai Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/3

4:05 pm-7:25 pm

2 stops36h 20m

Osaka Kansai Intl

Thu 2/19

3:45 pm-3:29 pm

2 stops38h 44m

$687

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 12/8

6:42 pm-4:40 pm

2 stops30h 58m

Osaka Kansai Intl

Fri 12/12

6:35 pm-12:15 pm

2 stops32h 40m

$793

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 12/8

4:05 pm-10:20 pm

2 stops39h 15m

Osaka Kansai Intl

Sat 12/20

3:00 pm-3:29 pm

2 stops39h 29m

$804

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 2/15

7:41 am-10:20 pm

2 stops23h 39m

Osaka Kansai Intl

Sat 2/28

2:05 pm-7:19 pm

2 stops20h 14m

$813

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Thu 12/4

6:50 am-8:55 pm

2 stops47h 05m

Osaka Kansai Intl

Mon 12/15

9:00 am-12:13 am

2 stops30h 13m

$830

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 2/15

6:30 am-6:50 pm

1 stop21h 20m

Osaka Kansai Intl

Sat 2/28

5:50 pm-11:48 pm

1 stop20h 58m

$850

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 2/15

6:00 am-8:25 am

2 stops35h 25m

Osaka Kansai Intl

Sat 2/28

5:50 pm-11:48 pm

1 stop20h 58m

$852

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/3

5:04 pm-6:50 pm

2 stops34h 46m

Osaka Kansai Intl

Thu 2/19

5:50 pm-11:48 pm

1 stop20h 58m

$855

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 3/24

6:05 am-10:15 pm

2 stops26h 10m

Osaka Kansai Intl

Mon 3/30

9:10 pm-2:32 pm

2 stops31h 22m

$876

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Fri 4/10

8:00 am-7:30 pm

2 stops21h 30m

Osaka Kansai Intl

Thu 4/16

6:45 am-12:20 pm

2 stops19h 35m

$1,074

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 Kansai Intl 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 month to fly to Osaka Kansai Intl Airport?

In general, January is the cheapest month to fly from Illinois to Osaka Kansai Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $803. If you aren’t able to travel during the month of January, then book flights to Osaka Kansai Intl Airport from Illinois during October instead. Flights to Osaka Kansai Intl Airport in October, while not as cheap as those in January, still average around $911.

What is the cheapest day to depart on your flight to Osaka Kansai Intl Airport?

The cheapest day to depart from Illinois to Osaka Kansai Intl Airport is on a Monday. Travelers who choose to depart for Osaka Kansai Intl Airport on a Monday will often find tickets for as low as $1,100. Flights from Illinois to Osaka Kansai Intl Airport on a Thursday will generally be more expensive and average around $1,623. 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 Osaka Kansai Intl Airport?

Our data shows that the cheapest Illinois to Osaka Kansai Intl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Osaka Kansai Intl Airport in the afternoon for as low as $1,213. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,689 on average. Flights to Osaka Kansai Intl Airport from Illinois at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Illinois to Osaka Kansai Intl Airport flights?

You could potentially save up to 49% on your flight if you consider stops on a Illinois to Osaka Kansai Intl Airport flight.

Cheap Illinois to Osaka Kansai Intl Airport flight deals and tips

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

Direct flights

None
There are no direct flights from Illinois to Osaka Kansai Intl Airport. There are no popular flight routes from Illinois to Osaka Kansai Intl Airport.
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  • When did momondo last update prices for flights from Illinois to Osaka Kansai Intl Airport?

    Prices for flights from Illinois to Osaka Kansai Intl Airport were last updated today.

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

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

    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 Osaka Kansai Intl Airport.

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

    The travel and health documents you'll need for your trip to Osaka Kansai Intl Airport 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 Osaka Kansai Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Osaka Kansai Intl Airport

Compare and see reviews for airlines that fly from Illinois to Osaka Kansai Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
EVA AirPriceFrom $1,097Free CancellationRating
8.4
1,270 reviews
Search EVA Air flights
ANAPriceFrom $1,173Free CancellationRating
8.4
1,003 reviews
Search ANA flights
United AirlinesPriceFrom $1,570Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights

Traveling to a place near Osaka?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Osaka. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Osaka from Illinois with this policy.

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

momondo provides multiple filters to help you find the best flight to Osaka 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 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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