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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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSA
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$785
(Justfly.com)

One-way from

$441
(FlightHub)

Popular in

April

Cheapest in

September

Average price

$1,694
Provider with most accurate pricing for Chicago (CHI)-Osaka (OSA) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Osaka (OSA) flights.
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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. 8% potential increase in price ($129 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 30, 2025.

This Justfly.com deal was found by Cheapflights users on 4/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/201:30 pmSTL - KIX
2 stops36h 55mAir Canada
Sun 9/286:05 pmKIX - STL
2 stops35h 33mAir Canada
Deal found 4/29$785
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:00 pmORD - KIX
1 stop24h 40mCathay Pacific
Fri 5/167:35 pmKIX - ORD
1 stop32h 50mCathay Pacific
Deal found 4/29$871
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:20 amSTL - ITM
2 stops19h 50mANA
Sun 9/2810:00 amITM - STL
2 stops22h 13mANA
Deal found 4/29$933
This ANA deal was found by Cheapflights users on 4/29. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:49 pmSTL - KIX
1 stop31h 01mMultiple Airlines
Sun 9/284:50 pmKIX - STL
1 stop37h 52mMultiple Airlines
Deal found 4/29$941
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/78:26 amSTL - KIX
2 stops33h 59mJapan Airlines
Mon 9/85:55 pmKIX - STL
1 stop19h 04mJapan Airlines
Deal found 4/29$985
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/308:35 amSTL - ITM
2 stops21h 15mJapan Airlines
Mon 8/111:25 pmITM - STL
2 stops37h 23mJapan Airlines
Deal found 4/29$1,033
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:00 amSTL - KIX
2 stops21h 30mUnited Airlines
Mon 5/58:25 amKIX - STL
2 stops28h 20mUnited Airlines
Deal found 4/29$1,057
This Travelocity deal was found by Cheapflights users on 4/29. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/810:00 amORD - KIX
2 stops32h 40mMultiple Airlines
Sun 11/169:00 amKIX - ORD
2 stops29h 59mMultiple Airlines
Deal found 4/29$1,085
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/512:30 amORD - KIX
1 stop19h 40mEVA Air
Tue 5/2011:10 amKIX - ORD
1 stop23h 50mEVA Air
Deal found 4/29$1,094
This American Airlines deal was found by Cheapflights users on 4/29. 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 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 4/29$1,155
This EVA Air deal was found by Cheapflights users on 4/29. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2012:30 amORD - UKB
1 stop19h 30mEVA Air
Fri 10/311:00 amUKB - ORD
1 stop23h 45mEVA Air
Deal found 4/29$1,213
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:08 pmORD - KIX
2 stops30h 17mAir Canada
Thu 10/26:05 pmKIX - ORD
2 stops27h 53mAir Canada
Deal found 4/29$1,231

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 April 30, 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

Mon 9/15

4:00 pm-6:40 am

1 stop24h 40m

Osaka Kansai Intl

Mon 9/22

7:35 pm-2:25 pm

1 stop32h 50m

$900

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 7/7

1:30 pm-4:25 pm

2 stops36h 55m

Osaka Kansai Intl

Mon 9/8

6:05 pm-7:57 pm

2 stops39h 52m

$908

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 7/7

8:26 am-8:25 am

2 stops33h 59m

Osaka Kansai Intl

Mon 9/8

5:55 pm-10:59 pm

1 stop19h 04m

$985

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 6/30

8:35 am-7:50 pm

2 stops21h 15m

Osaka Itami

Mon 8/11

1:25 pm-12:48 pm

2 stops37h 23m

$1,033

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sat 5/3

6:00 am-6:10 pm

2 stops22h 10m

Osaka Itami

Mon 5/5

7:05 am-12:19 pm

2 stops19h 14m

$1,040

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 5/3

8:00 am-7:30 pm

2 stops21h 30m

Osaka Kansai Intl

Mon 5/5

8:25 am-10:45 pm

2 stops28h 20m

$1,057

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sun 9/14

12:30 am-5:15 pm

1 stop26h 45m

Osaka Kansai Intl

Mon 9/22

1:10 pm-8:45 pm

1 stop21h 35m

$1,094

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sat 10/25

10:00 am-8:55 pm

2 stops20h 55m

Osaka Kansai Intl

Sat 11/1

9:00 am-11:59 pm

2 stops28h 59m

$1,148

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

$1,155

ChicagoKobe

ORD - UKB

ORDUKB

Chicago O'Hare Intl

Sat 9/20

12:30 am-10:00 am

1 stop19h 30m

Kobe

Fri 10/3

11:00 am-8:45 pm

1 stop23h 45m

$1,213

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 52 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 $898). Flying from Illinois to Osaka in December is currently the most expensive (average of $1,350). 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 April 30, 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 April 30, 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
1,186 reviews

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,459 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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?

    $441 is the cheapest one-way deal found within the past few days, from Japan Airlines. You may also be able to find cheap deals on Cathay Pacific and American Airlines, with prices starting from $467 and $535, 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 $898). Flying from Illinois to Osaka in December is currently the most expensive (average of $1,350). 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 5 airlines flying from Illinois to Osaka

Discover the top 5 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$983Average$1,604FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$1,022Average$1,208FlexibilityNo cancel feeOn-time67%
EVA AirCheapest$1,097Average$1,293FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,099Average$1,581FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,318Average$1,440FlexibilityNo cancel feeOn-time79%

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