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$378+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSA
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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Cheap flight deals from Illinois to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Osaka (OSA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 17, 2025.

Round-trip from

$707
(Justfly.com)

One-way from

$378
(Kiwi.com)
From Illinois to Osaka (OSA)
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One-way flight from Illinois to Osaka (OSA)
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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 January 17, 2025.

This Justfly.com deal was found by Cheapflights users on 1/15. 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.
Sun 4/279:39 amSTL - ITM
2 stops19h 31mANA
Fri 5/92:00 pmITM - STL
2 stops19h 49mANA
Deal found 1/15$707
This FlightHub deal was found by Cheapflights users on 1/15. 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.
Sun 4/276:15 amSTL - KIX
1 stop22h 40mJapan Airlines
Sat 5/105:45 pmKIX - STL
1 stop19h 26mJapan Airlines
Deal found 1/15$708
This American Airlines deal was found by Cheapflights users on 1/15. 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 4/286:15 amSTL - KIX
1 stop22h 40mAmerican Airlines
Sat 5/105:45 pmKIX - STL
1 stop19h 26mAmerican Airlines
Deal found 1/15$713
This FlightHub deal was found by Cheapflights users on 1/15. 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.
Sun 4/277:35 amSTL - ITM
2 stops22h 20mJapan Airlines
Fri 5/98:30 amITM - STL
2 stops21h 45mJapan Airlines
Deal found 1/15$714
This United Airlines deal was found by Cheapflights users on 1/15. 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 4/264:45 pmSTL - KIX
2 stops32h 05mUnited Airlines
Tue 5/134:50 pmKIX - STL
1 stop19h 51mUnited Airlines
Deal found 1/15$720
This American Airlines deal was found by Cheapflights users on 1/15. 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 4/287:35 amSTL - ITM
2 stops21h 00mAmerican Airlines
Sat 5/108:30 amITM - STL
2 stops19h 39mAmerican Airlines
Deal found 1/15$721
This Trip.com deal was found by Cheapflights users on 1/15. 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.
Sat 2/17:30 amMDW - KIX
2 stops44h 20mMultiple Airlines
Mon 2/105:50 pmKIX - MDW
2 stops21h 27mMultiple Airlines
Deal found 1/15$827
This Air Canada deal was found by Cheapflights users on 1/15. 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 11/243:40 pmORD - ITM
2 stops36h 15mAir Canada
Tue 12/22:05 pmITM - ORD
2 stops21h 20mAir Canada
Deal found 1/15$830
This Justfly.com deal was found by Cheapflights users on 1/15. 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.
Tue 4/223:40 pmORD - KIX
1 stop34h 45mAir Canada
Tue 4/296:05 pmKIX - ORD
1 stop34h 34mAir Canada
Deal found 1/15$830
This Mytrip deal was found by Cheapflights users on 1/15. 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.
Sun 2/29:18 pmORD - KIX
2 stops34h 02mMultiple Airlines
Tue 2/187:30 amKIX - ORD
3 stops37h 37mMultiple Airlines
Deal found 1/15$846
This Orbitz deal was found by Cheapflights users on 1/16. 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 3/37:12 amORD - UKB
2 stops33h 48mMultiple Airlines
Wed 3/127:05 amUKB - ORD
2 stops38h 56mMultiple Airlines
Deal found 1/16$890
This FlightHub deal was found by Cheapflights users on 1/15. 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.
Tue 1/282:40 pmORD - KIX
1 stop24h 40mCathay Pacific
Wed 2/129:25 amKIX - ORD
1 stop42h 35mCathay Pacific
Deal found 1/15$914

Find flights from Illinois to Osaka within your budget

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 4/27

9:39 am-7:10 pm

2 stops19h 31m

Osaka Itami

Fri 5/9

2:00 pm-7:49 pm

2 stops19h 49m

$707

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 4/27

6:15 am-6:55 pm

1 stop22h 40m

Osaka Kansai Intl

Sat 5/10

5:45 pm-11:11 pm

1 stop19h 26m

$708

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 4/28

6:15 am-6:55 pm

1 stop22h 40m

Osaka Kansai Intl

Sat 5/10

5:45 pm-11:11 pm

1 stop19h 26m

$713

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 4/27

7:35 am-7:55 pm

2 stops22h 20m

Osaka Itami

Fri 5/9

8:30 am-4:15 pm

2 stops21h 45m

$714

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 4/26

4:45 pm-2:50 pm

2 stops32h 05m

Osaka Kansai Intl

Tue 5/13

4:50 pm-10:41 pm

1 stop19h 51m

$720

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 4/28

7:35 am-6:35 pm

2 stops21h 00m

Osaka Itami

Sat 5/10

8:30 am-2:09 pm

2 stops19h 39m

$721

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sat 2/1

9:00 am-6:50 pm

1 stop18h 50m

Osaka Kansai Intl

Wed 2/12

7:30 am-6:07 am

3 stops37h 37m

$875

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Tue 3/4

7:20 am-7:50 pm

2 stops21h 30m

Osaka Itami

Tue 3/18

3:20 pm-10:06 pm

2 stops20h 46m

$889

ChicagoKobe

ORD - UKB

ORDUKB

Chicago O'Hare Intl

Mon 3/3

7:12 am-8:00 am

2 stops33h 48m

Kobe

Wed 3/12

7:05 am-8:01 am

2 stops38h 56m

$890

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Tue 3/11

3:40 pm-6:20 am

1 stop24h 40m

Osaka Kansai Intl

Wed 3/19

4:55 pm-2:00 pm

1 stop35h 05m

$897

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

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.

Travel insights for flights from Illinois to Osaka

Get recent, data-driven insights about flights from Illinois to Osaka including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Osaka (average of $950). Flying from Illinois to Osaka in December is currently the most expensive (average of $1,366). 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 January 17, 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 January 17, 2025.
Get a feel of what it's like to fly with Air Canada, Cathay Pacific and Air France 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.
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,034 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

EVA Air
8.4
Very good
1,248 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

ANA
8.4
Very good
847 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,448 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,511 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

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?

    $454 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 Cathay Pacific and EVA Air, with prices starting from $566 and $643, 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, November is the cheapest month in which you can book a flight from Illinois to Osaka (average of $950). Flying from Illinois to Osaka in December is currently the most expensive (average of $1,366). 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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$868Average$1,168FlexibilityNo cancel feeOn-time67%
ANACheapest$983Average$1,604FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,086Average$1,284FlexibilityNo 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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