HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Osaka

$479+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Osaka with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$753
(American Airlines)

One-way from

$479
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,357
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. 11% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 9/27:15 amSTL - KIX
1 stop17h 35mUnited Airlines
Fri 10/34:50 pmKIX - STL
1 stop21h 37mUnited Airlines
Deal found 2/19$738
This FlightHub deal was found by Cheapflights users on 2/19. 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 9/27:00 amSTL - KIX
1 stop21h 45mJapan Airlines
Fri 10/38:55 pmKIX - STL
2 stops36h 59mJapan Airlines
Deal found 2/19$740
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 7/297:33 amSTL - ITM
2 stops21h 32mAmerican Airlines
Fri 8/82:35 pmITM - STL
2 stops19h 12mAmerican Airlines
Deal found 2/20$753
This Justfly.com deal was found by Cheapflights users on 2/19. 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 9/26:45 amSTL - ITM
2 stops22h 25mANA
Fri 10/38:00 amITM - STL
2 stops20h 18mANA
Deal found 2/19$783
This Gotogate deal was found by Cheapflights users on 2/20. 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.
Sun 4/64:00 pmORD - KIX
1 stop24h 40mCathay Pacific
Sun 4/1310:00 amKIX - ORD
1 stop42h 25mCathay Pacific
Deal found 2/20$1,017
This Air Canada deal was found by Cheapflights users on 2/20. 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.
Wed 11/127:20 amORD - ITM
2 stops21h 30mMultiple Airlines
Wed 12/32:05 pmITM - ORD
2 stops39h 34mMultiple Airlines
Deal found 2/20$1,052
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Fri 4/43:16 pmORD - KIX
3 stops34h 04mMultiple Airlines
Fri 4/112:00 pmKIX - ORD
3 stops32h 35mMultiple Airlines
Deal found 2/20$1,072
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:15 amSTL - ITM
2 stops20h 55mUnited Airlines
Sat 12/61:00 pmITM - STL
2 stops23h 10mUnited Airlines
Deal found 2/19$1,092
This SmartFares deal was found by Cheapflights users on 2/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/125:55 amSTL - ITM
2 stops21h 35mJapan Airlines
Mon 3/174:25 pmITM - STL
2 stops44h 44mJapan Airlines
Deal found 2/20$1,127
This oojo deal was found by Cheapflights users on 2/20. 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 4/712:30 amORD - KIX
1 stop21h 40mEVA Air
Tue 4/151:10 pmKIX - ORD
1 stop21h 50mEVA Air
Deal found 2/20$1,156
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:50 pmORD - KIX
2 stops33h 55mAlaska Airlines
Mon 10/208:45 pmKIX - ORD
2 stops30h 19mAlaska Airlines
Deal found 2/20$1,171
This EVA Air deal was found by Cheapflights users on 2/20. 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.
Wed 10/812:30 amORD - UKB
1 stop19h 30mEVA Air
Mon 10/2011:00 amUKB - ORD
1 stop23h 45mEVA Air
Deal found 2/20$1,273

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 February 20, 2025.

Fly from

Illinois

Fly to

Osaka

Route

Depart

Return

Price

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 7/29

7:33 am-7:05 pm

2 stops21h 32m

Osaka Itami

Fri 8/8

2:35 pm-7:47 pm

2 stops19h 12m

$753

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 3/11

7:00 am-4:35 pm

1 stop19h 35m

Osaka Kansai Intl

Tue 3/18

6:30 pm-9:51 am

2 stops29h 21m

$848

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 3/11

5:55 am-10:15 pm

2 stops26h 20m

Osaka Kansai Intl

Sun 3/16

5:50 pm-11:09 pm

1 stop19h 19m

$965

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Sun 4/6

4:00 pm-6:40 am

1 stop24h 40m

Osaka Kansai Intl

Sun 4/13

10:00 am-2:25 pm

1 stop42h 25m

$1,017

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Fri 4/4

3:16 pm-3:20 pm

3 stops34h 04m

Osaka Kansai Intl

Fri 4/11

2:00 pm-8:35 am

3 stops32h 35m

$1,072

ChicagoOsaka

ORD - ITM

ORDITM

Chicago O'Hare Intl

Tue 2/25

7:20 am-7:55 pm

2 stops21h 35m

Osaka Itami

Mon 3/3

2:50 pm-7:55 pm

2 stops20h 05m

$1,115

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 5/19

7:00 am-5:05 pm

2 stops20h 05m

Osaka Itami

Tue 6/3

12:00 pm-10:15 pm

3 stops48h 15m

$1,124

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Wed 3/12

5:55 am-5:30 pm

2 stops21h 35m

Osaka Itami

Mon 3/17

4:25 pm-11:09 pm

2 stops44h 44m

$1,127

ChicagoOsaka

ORD - KIX

ORDKIX

Chicago O'Hare Intl

Mon 4/7

12:30 am-12:10 pm

1 stop21h 40m

Osaka Kansai Intl

Tue 4/15

1:10 pm-9:00 pm

1 stop21h 50m

$1,156

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 4/6

9:39 am-7:25 am

2 stops31h 46m

Osaka Itami

Sun 4/13

6:00 pm-12:20 pm

2 stops32h 20m

$1,158

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 40 results
1
2
3
4

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, February is the cheapest month in which you can book a flight from Illinois to Osaka (average of $912). 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 February 20, 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 February 20, 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. 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
1,200 reviews

Food

8.0

Boarding

8.4

Overall

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

EVA Air
8.4
Very good
1,200 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Overall

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

ANA
8.4
Very good
842 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Overall

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Korean Air
8.4
Very good
1,037 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Overall

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Overall

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Delta
8.0
Very good
8,219 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Overall

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

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?

    $566 is the cheapest one-way deal found within the past few days, from Cathay Pacific. You may also be able to find cheap deals on EVA Air and Air Canada, with prices starting from $645 and $922, 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 $912). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Kansai Intl flights
San Francisco to Kansai Intl flights
Los Angeles to Itami flights
Honolulu to Kansai Intl flights
San Francisco to Itami flights
John F Kennedy Intl to Kansai Intl flights
Ontario to Kansai Intl flights
John F Kennedy Intl to Itami flights
Hobby to Kansai Intl flights
Seattle to Kansai Intl flights
Newark to Kansai Intl flights
LaGuardia to Kansai Intl flights
Seattle to Itami flights
Newark to Itami flights
O'Hare Intl to Kansai Intl flights
George Bush Intcntl to Kansai Intl flights
Dallas/Fort Worth to Kansai Intl flights
O'Hare Intl to Itami flights
George Bush Intcntl to Itami flights
Boston to Kansai Intl flights
San Diego to Kansai Intl flights
LaGuardia to Itami flights
Honolulu to Itami flights
Santa Ana to Kansai Intl flights
Dulles Intl to Itami flights
Boston to Itami flights
San Diego to Itami flights
Dulles Intl to Kansai Intl flights
Oakland to Kansai Intl flights
Portland to Kansai Intl flights
Denver to Kansai Intl flights
San Jose to Kansai Intl flights
Denver to Itami flights
Atlanta to Kansai Intl flights
Portland to Itami flights
Orlando to Kansai Intl flights
Orlando to Itami flights
Midway to Kansai Intl flights
Austin to Itami flights
Atlanta to Itami flights
Reagan-National to Kansai Intl flights
Austin to Kansai Intl flights
Baltimore to Kansai Intl flights
Baltimore to Itami flights
Dallas/Fort Worth to Itami flights
Reagan-National to Itami flights
Sky Harbor Intl to Kansai Intl flights
Kansas City to Kansai Intl flights

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$868Average$1,174FlexibilityNo cancel feeOn-time67%
ANACheapest$984Average$1,626FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,086Average$1,291FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,099Average$1,581FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,318Average$1,440FlexibilityNo cancel feeOn-time79%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.