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Osaka

$441+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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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 July 31, 2025.

Round-trip from

$743
(oojo)

One-way from

$441
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$1,388
From Illinois to Osaka (OSA)
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One-way flight from Illinois to Osaka (OSA)
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Highest demand for flights based on searches. 0% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 31, 2025.

This oojo deal was found by Cheapflights users on 7/30. 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.
Tue 10/283:40 pmORD - KIX
1 stop24h 40mCathay Pacific
Tue 11/46:05 pmKIX - ORD
1 stop33h 55mCathay Pacific
Deal found 7/30$743
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 9/275:11 pmSTL - KIX
2 stops31h 39mUnited Airlines
Wed 10/14:50 pmKIX - STL
2 stops17h 56mUnited Airlines
Deal found 7/31$852
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:40 amSTL - KIX
2 stops38h 40mDelta
Sun 9/2112:35 pmKIX - STL
2 stops24h 39mDelta
Deal found 7/31$873
This Trip.com deal was found by Cheapflights users on 7/30. 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.
Sun 8/317:05 amORD - KIX
2 stops24h 00mMultiple Airlines
Sat 9/69:10 amKIX - ORD
2 stops23h 01mMultiple Airlines
Deal found 7/30$874
This Trip.com deal was found by Cheapflights users on 7/29. 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.
Tue 8/267:05 amORD - UKB
2 stops37h 05mMultiple Airlines
Tue 9/211:10 amUKB - ORD
2 stops32h 30mMultiple Airlines
Deal found 7/29$894
This Air Canada deal was found by Cheapflights users on 7/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/141:30 pmSTL - KIX
2 stops36h 55mAir Canada
Sun 9/216:05 pmKIX - STL
1 stop35h 13mAir Canada
Deal found 7/31$909
This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/149:56 amSTL - ITM
2 stops19h 49mAmerican Airlines
Sun 9/212:35 pmITM - STL
2 stops18h 35mAmerican Airlines
Deal found 7/31$913
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/225:49 pmSTL - ITM
2 stops33h 16mUnited Airlines
Fri 10/312:00 pmITM - STL
2 stops23h 37mUnited Airlines
Deal found 7/31$914
This KAYAK deal was found by Cheapflights users on 7/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:20 amSTL - ITM
2 stops19h 50mANA
Mon 10/68:20 pmITM - STL
2 stops32h 07mANA
Deal found 7/31$940
This Gurufare deal was found by Cheapflights users on 7/31. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:56 amSTL - KIX
2 stops19h 34mJapan Airlines
Sun 10/55:55 pmKIX - STL
1 stop19h 04mJapan Airlines
Deal found 7/31$955
This Gurufare deal was found by Cheapflights users on 7/31. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:50 amSTL - ITM
2 stops20h 15mJapan Airlines
Sat 10/47:05 amITM - STL
2 stops20h 26mJapan Airlines
Deal found 7/31$972
This Orbitz deal was found by Cheapflights users on 7/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:25 pmORD - ITM
2 stops32h 15mMultiple Airlines
Wed 9/243:00 pmITM - ORD
2 stops36h 13mMultiple Airlines
Deal found 7/28$981

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 July 31, 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

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Tue 10/28

3:40 pm-12:45 pm

1 stop31h 05m

Osaka Kansai Intl

Tue 11/4

6:05 pm-1:00 pm

1 stop33h 55m

$743

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 9/27

5:11 pm-2:50 pm

2 stops31h 39m

Osaka Kansai Intl

Wed 10/1

4:50 pm-8:46 pm

2 stops17h 56m

$852

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 9/14

6:40 am-11:20 am

2 stops38h 40m

Osaka Kansai Intl

Sun 9/21

12:35 pm-11:14 pm

2 stops24h 39m

$873

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sun 8/31

7:05 am-9:05 pm

2 stops24h 00m

Osaka Kansai Intl

Sat 9/6

9:10 am-6:11 pm

2 stops23h 01m

$874

ChicagoKobe

ORD - UKB

ORDUKB

Chicago O'Hare Intl

Tue 8/26

7:05 am-10:10 am

2 stops37h 05m

Kobe

Tue 9/2

11:10 am-5:40 am

2 stops32h 30m

$894

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 9/14

1:30 pm-4:25 pm

2 stops36h 55m

Osaka Kansai Intl

Sun 9/21

6:05 pm-3:18 pm

1 stop35h 13m

$909

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 9/14

9:56 am-7:45 pm

2 stops19h 49m

Osaka Itami

Sun 9/21

2:35 pm-7:10 pm

2 stops18h 35m

$913

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 9/22

5:49 pm-5:05 pm

2 stops33h 16m

Osaka Itami

Fri 10/3

12:00 pm-9:37 pm

2 stops23h 37m

$914

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 9/21

8:20 am-6:10 pm

2 stops19h 50m

Osaka Itami

Mon 10/6

8:20 pm-2:27 pm

2 stops32h 07m

$940

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 9/23

9:56 am-7:30 pm

2 stops19h 34m

Osaka Kansai Intl

Sun 10/5

5:55 pm-10:59 pm

1 stop19h 04m

$955

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 55 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, February is the cheapest month in which you can book a flight from Illinois to Osaka (average of $877). Flying from Illinois to Osaka in June is currently the most expensive (average of $1,312). 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 July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Osaka as you normally would.

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Osaka. Reviews last updated July 31, 2025.
Get a feel of what it's like to fly with EVA Air, ANA, and Korean Air from Illinois to Osaka by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.4
Very good
922 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,536 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
754 reviews
EVA Air
8.4
Very good
1,220 reviews

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

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

    $507 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Cathay Pacific, with prices starting from $512 and $528, 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, February is the cheapest month in which you can book a flight from Illinois to Osaka (average of $877). Flying from Illinois to Osaka in June is currently the most expensive (average of $1,312). 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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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$983Average$1,698FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$1,025Average$1,391FlexibilityNo cancel feeOn-time67%
EVA AirCheapest$1,097Average$1,293FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,099Average$1,691FlexibilityNo cancel feeOn-time69%

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