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Osaka

$438+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$769
(Air Canada)

One-way from

$438
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$1,734
From Illinois to Osaka (OSA)
Search Deals
One-way flight from Illinois to Osaka (OSA)
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Highest demand for flights based on searches. 10% potential increase in price ($156 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 June 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/12. 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.
Sat 9/209:15 amSTL - KIX
1 stop17h 10mAir Canada
Sun 9/286:05 pmKIX - STL
2 stops30h 44mAir Canada
Deal found 6/12$624
This United Airlines deal was found by Cheapflights users on 6/12. 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 10/205:47 pmSTL - KIX
1 stop31h 03mUnited Airlines
Tue 10/288:25 amKIX - STL
2 stops29h 19mUnited Airlines
Deal found 6/12$709
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Mon 12/84:15 pmSTL - KIX
2 stops39h 05mMultiple Airlines
Sat 12/203:40 pmKIX - STL
2 stops38h 46mMultiple Airlines
Deal found 6/11$756
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:15 amSTL - ITM
2 stops19h 55mAir Canada
Sun 9/282:05 pmITM - STL
2 stops19h 33mAir Canada
Deal found 6/10$850
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate 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 11/49:50 amKIX - ORD
1 stop42h 10mCathay Pacific
Deal found 6/12$892
This Ovago deal was found by Cheapflights users on 6/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:15 amSTL - ITM
2 stops23h 05mANA
Sat 11/227:05 amITM - STL
2 stops23h 45mANA
Deal found 6/11$900
This Trip.com deal was found by Cheapflights users on 6/12. 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 10/1912:25 pmSTL - ITM
2 stops40h 30mMultiple Airlines
Tue 10/282:00 pmITM - STL
2 stops23h 44mMultiple Airlines
Deal found 6/12$904
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 7/78:50 amSTL - KIX
1 stop19h 55mAmerican Airlines
Mon 9/85:55 pmKIX - STL
1 stop19h 04mAmerican Airlines
Deal found 6/12$953
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Sat 9/133:35 pmORD - KIX
1 stop34h 50mAir Canada
Thu 9/186:05 pmKIX - ORD
1 stop34h 50mAir Canada
Deal found 6/12$965
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Mon 9/83:21 pmORD - KIX
2 stops28h 19mMultiple Airlines
Mon 9/157:35 amKIX - ORD
3 stops44h 41mMultiple Airlines
Deal found 6/10$971
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/76:00 amSTL - ITM
2 stops21h 05mUnited Airlines
Mon 9/812:00 pmITM - STL
2 stops40h 19mUnited Airlines
Deal found 6/10$989
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Mon 7/148:00 amORD - UKB
2 stops36h 00mMultiple Airlines
Mon 7/2111:00 amUKB - ORD
2 stops26h 59mMultiple Airlines
Deal found 6/11$1,053

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 June 12, 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

Mon 7/7

5:00 am-4:25 pm

2 stops21h 25m

Osaka Kansai Intl

Mon 9/8

6:05 pm-7:57 pm

2 stops39h 52m

$769

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 9/8

4:00 pm-6:40 am

1 stop24h 40m

Osaka Kansai Intl

Mon 9/15

5:45 pm-2:25 pm

1 stop34h 40m

$893

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 7/7

8:50 am-6:45 pm

1 stop19h 55m

Osaka Kansai Intl

Mon 9/8

5:55 pm-10:59 pm

1 stop19h 04m

$953

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 9/8

3:21 pm-9:40 am

2 stops28h 19m

Osaka Kansai Intl

Mon 9/15

7:35 am-2:16 pm

3 stops44h 41m

$971

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 7/7

6:00 am-5:05 pm

2 stops21h 05m

Osaka Itami

Mon 9/8

12:00 pm-2:19 pm

2 stops40h 19m

$989

ChicagoKobe

ORD - UKB

ORDUKB

Chicago O'Hare Intl

Mon 7/14

8:00 am-10:00 am

2 stops36h 00m

Kobe

Mon 7/21

11:00 am-11:59 pm

2 stops26h 59m

$1,053

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 7/29

4:45 pm-2:50 pm

2 stops32h 05m

Osaka Kansai Intl

Fri 8/8

4:55 pm-12:46 pm

2 stops33h 51m

$1,061

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sun 9/7

12:30 am-5:15 pm

1 stop26h 45m

Osaka Kansai Intl

Mon 9/15

11:10 am-8:45 pm

1 stop23h 35m

$1,100

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Mon 6/23

10:15 pm-8:25 pm

3 stops32h 10m

Osaka Itami

Thu 6/26

2:25 pm-6:12 am

3 stops29h 47m

$1,142

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sun 9/7

8:08 pm-4:25 pm

2 stops30h 17m

Osaka Kansai Intl

Sun 9/14

6:05 pm-8:01 am

2 stops27h 56m

$1,159

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 54 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 $888). Flying from Illinois to Osaka in June is currently the most expensive (average of $1,324). 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 June 12, 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.

Rainfall in Osaka by month

Plan your trip to Osaka by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Osaka ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka when rainfall is around 1.6 in.

Temperature in Osaka by month

Plan your trip to Osaka by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Osaka, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 June 12, 2025.
Get a feel of what it's like to fly with EVA Air, Korean Air and Japan Airlines from Illinois to Osaka by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.6

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
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.6

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
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.6

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
1,489 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.6

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
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.6

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
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Overall

8.4

Crew

8.6

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?

    $438 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and Japan Airlines, with prices starting from $438 and $452, 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 Kansai Intl. You may also consider Chicago O'Hare Intl - Osaka Itami 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 $888). Flying from Illinois to Osaka in June is currently the most expensive (average of $1,324). 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 Illinois?

Book flights to Illinois 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$983Average$1,604FlexibilityNo 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$1,581FlexibilityNo cancel feeOn-time69%

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