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Osaka

$360+ Cheap flights from Illinois to Osaka (OSA)

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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSA
dez 3 — dez 101
qua 12/3
qua 12/10
1 adult, Economy
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Find flight deals from Illinois to Osaka

Cheapest flights from Illinois to Osaka
Explore the most affordable flight options available from Illinois to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on novembro 3, 2025.

This United Airlines deal was found by Cheapflights users on 11/2. 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.
seg 12/86:42 pmSTL - KIX
2 stops30h 58mUnited Airlines
sex 12/126:35 pmKIX - STL
2 stops32h 40mUnited Airlines
Deal found 11/2$793
This United Airlines deal was found by Cheapflights users on 10/31. 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.
dom 11/25:29 pmSTL - KIX
1 stop32h 11mUnited Airlines
qui 11/68:20 amKIX - STL
2 stops29h 25mUnited Airlines
Deal found 10/31$800
This Mytrip deal was found by Cheapflights users on 11/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 12/69:06 pmORD - KIX
2 stops32h 49mMultiple Airlines
sáb 12/1310:30 amKIX - ORD
2 stops34h 35mMultiple Airlines
Deal found 11/1$810
This United Airlines deal was found by Cheapflights users on 11/1. 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.
seg 12/86:42 pmSTL - KIX
2 stops30h 58mUnited Airlines
sáb 12/206:35 pmKIX - STL
2 stops33h 45mUnited Airlines
Deal found 11/1$816
This Trip.com deal was found by Cheapflights users on 11/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/18:18 pmORD - KIX
2 stops33h 37mMultiple Airlines
seg 12/89:00 amKIX - ORD
2 stops36h 05mMultiple Airlines
Deal found 11/3$884
This Trip.com deal was found by Cheapflights users on 11/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/18:18 pmORD - ITM
2 stops44h 12mMultiple Airlines
seg 12/84:50 pmITM - ORD
2 stops28h 15mMultiple Airlines
Deal found 11/3$931
This Japan Airlines deal was found by Cheapflights users on 11/2. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/86:55 amSTL - KIX
1 stop20h 55mJapan Airlines
sex 12/123:00 pmKIX - STL
2 stops37h 29mJapan Airlines
Deal found 11/2$933
This oojo deal was found by Cheapflights users on 11/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/252:35 pmORD - KIX
1 stop36h 15mCathay Pacific
ter 12/29:25 amKIX - ORD
1 stop42h 30mCathay Pacific
Deal found 11/1$945
This Trip.com deal was found by Cheapflights users on 11/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/18:18 pmORD - UKB
2 stops44h 42mMultiple Airlines
seg 12/87:05 amUKB - ORD
2 stops38h 00mMultiple Airlines
Deal found 11/1$952
This American Airlines deal was found by Cheapflights users on 11/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/86:55 amSTL - KIX
1 stop20h 55mAmerican Airlines
sáb 12/205:50 pmKIX - STL
1 stop21h 01mAmerican Airlines
Deal found 11/2$957
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
qua 12/34:25 pmORD - KIX
1 stop25h 20mMultiple Airlines
qua 12/108:00 amKIX - ORD
2 stops37h 05mMultiple Airlines
Deal found 11/1$957
This Japan Airlines deal was found by Cheapflights users on 10/31. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 11/23:23 pmSTL - ITM
2 stops27h 22mJapan Airlines
qui 11/64:45 pmITM - STL
2 stops35h 55mJapan Airlines
Deal found 10/31$961

Cheap flight deals from Illinois to Osaka

Keep the following information in mind while searching for Illinois to Osaka flight deals. Data was last updated novembro 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$673
(Air Canada)

One-way from

$360
(Air Canada)

Popular in

December

Cheapest in

September

Average price

$1,372
Provider with most accurate pricing for Chicago (CHI)-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Osaka (OSA) flights.
Search Deals
From Illinois to Osaka (OSA)
Search Deals
One-way flight from Illinois to Osaka (OSA)
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Osaka 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 novembro 3, 2025.
Use the filters below to find and compare flights from Illinois to Osaka that are best for you.

Fly from

Illinois

Fly to

Osaka

Route

Depart

Return

Price

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

seg 12/8

4:45 pm-4:40 pm

2 stops32h 55m

Osaka Kansai Intl

sex 12/12

6:35 pm-9:58 pm

2 stops18h 23m

$793

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

seg 12/8

6:42 pm-4:40 pm

2 stops30h 58m

Osaka Kansai Intl

sáb 12/20

6:35 pm-1:20 pm

2 stops33h 45m

$816

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

qua 1/28

2:35 pm-6:20 am

1 stop24h 45m

Osaka Kansai Intl

seg 2/16

7:05 pm-12:55 pm

1 stop32h 50m

$889

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

qua 1/28

2:35 pm-6:20 am

1 stop24h 45m

Osaka Kansai Intl

qua 2/18

7:05 pm-12:55 pm

1 stop32h 50m

$894

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

qui 1/29

2:35 pm-6:20 am

1 stop24h 45m

Osaka Kansai Intl

seg 2/16

7:05 pm-12:55 pm

1 stop32h 50m

$894

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

qua 1/28

2:35 pm-6:20 am

1 stop24h 45m

Osaka Kansai Intl

dom 2/15

6:05 pm-12:55 pm

1 stop33h 50m

$894

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

qua 1/28

2:35 pm-12:45 pm

1 stop31h 10m

Osaka Kansai Intl

ter 2/17

4:15 pm-12:55 pm

2 stops35h 40m

$906

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

seg 1/12

9:15 pm-7:25 pm

2 stops31h 10m

Osaka Kansai Intl

seg 1/19

3:45 pm-7:30 pm

2 stops18h 45m

$911

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

qui 1/29

2:35 pm-2:55 pm

2 stops33h 20m

Osaka Kansai Intl

ter 2/17

6:05 pm-12:55 pm

1 stop33h 50m

$911

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

seg 12/1

8:18 pm-8:55 pm

2 stops33h 37m

Osaka Kansai Intl

seg 12/8

10:30 am-6:05 am

2 stops34h 35m

$915

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 48 results
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Best time to book a flight from Illinois to Osaka

Have a flexible travel schedule? Discover the best time to fly to Osaka 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 Osaka

What is the cheapest month to book a flight from Illinois to Osaka?

Currently, December is the cheapest month in which you can book a flight from Illinois to Osaka (average of $756). Flying from Illinois to Osaka in August is currently the most expensive (average of $1,691). 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 OSA?

Find hourly flight availability from Illinois to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated novembro 3, 2025.

It’s typically best to fly out from Illinois to Osaka in the afternoon. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Osaka. 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 Osaka?

    United Airlines, Cathay Pacific, and Japan Airlines can get you from Illinois to Osaka in just under 24h 45m. Your travel time can differ by up to 13h 48m. The distance from Illinois to Osaka is about 6488 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Osaka one-way?

    $496 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on ANA and Japan Airlines, with prices starting from $575 and $729, respectively.

  • What are the most popular routes from Illinois to Osaka?

    The most popular route from Illinois to Osaka is Chicago O'Hare Intl - Osaka Itami. You may also consider Chicago O'Hare Intl - Osaka Kansai Intl or Chicago O'Hare Intl - Kobe.

  • Can I find deals for flights from Illinois to Osaka that include hotel bookings?

    Yes. In addition to deals on Illinois to Osaka flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Osaka?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Osaka.

  • Can I find deals for business class flights from Illinois to Osaka?

    Yes. Cheapflights offers flight deals from Illinois to Osaka 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 Osaka?

    Currently, December is the cheapest month in which you can book a flight from Illinois to Osaka (average of $756). Flying from Illinois to Osaka in August is currently the most expensive (average of $1,691). 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

Traveling to a place near Osaka?

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

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Alternative routes for Illinois to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
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Reagan-National to Kansai Intl flights
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George Bush Intcntl to Osaka Itami flights
Cleveland to Osaka Itami flights

Top 4 airlines flying from Illinois to Osaka

Discover the top 4 airlines that operate flights from Illinois to Osaka. 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 novembro 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,025Average$1,391FlexibilityNo cancel feeOn-time67%
EVA AirCheapest$1,097Average$1,293FlexibilityNo cancel feeOn-time74%
ANACheapest$1,173Average$1,695FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,570Average$1,996FlexibilityNo cancel feeOn-time69%

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