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Kansai Intl

$413+ Cheap flights from St. Louis (STL) to Kansai Intl (KIX)

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.
STL — KIX
ago. 23 — ago. 301
sáb. 8/23
sáb. 8/30
1 adult, Economy
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Cheap flight deals from St. Louis to Kansai Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Kansai Intl (KIX). 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 agosto 18, 2025.

Round-trip from

$675
(Air Canada)

One-way from

$413
(ANA)

Popular in

August

Cheapest in

September

Average price

$2,889
From Lambert-St Louis to Osaka Kansai Intl
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One-way flight from Lambert-St Louis to Osaka Kansai Intl
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Highest demand for flights based on searches. 14% potential increase in price ($240 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($163 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Kansai Intl

Cheapest flights from St. Louis to Kansai Intl
Explore the most affordable flight options available from St. Louis to Kansai Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. 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.
mar. 9/165:15 amSTL - KIX
2 stops19h 35mUnited Airlines
mié. 10/14:50 pmKIX - STL
2 stops21h 08mUnited Airlines
Deal found 8/17$701
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/194:05 pmSTL - KIX
2 stops58h 35mAir Canada
sáb. 12/63:40 pmKIX - STL
2 stops38h 49mAir Canada
Deal found 8/17$704
This United Airlines deal was found by Cheapflights users on 8/17. 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.
mar. 9/165:49 pmSTL - KIX
1 stop31h 01mUnited Airlines
vie. 10/34:50 pmKIX - STL
2 stops21h 08mUnited Airlines
Deal found 8/17$710
This FlightHub deal was found by Cheapflights users on 8/17. 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.
lun. 9/159:17 amSTL - KIX
2 stops23h 03mANA
vie. 10/36:45 amKIX - STL
2 stops21h 42mANA
Deal found 8/17$728
This United Airlines deal was found by Cheapflights users on 8/17. 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.
sáb. 9/275:28 pmSTL - KIX
2 stops31h 22mUnited Airlines
mié. 10/14:50 pmKIX - STL
2 stops19h 10mUnited Airlines
Deal found 8/17$741
This United Airlines deal was found by Cheapflights users on 8/17. 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.
lun. 9/155:15 amSTL - KIX
2 stops19h 35mUnited Airlines
jue. 10/28:30 amKIX - STL
3 stops27h 30mUnited Airlines
Deal found 8/17$745
This FlightHub deal was found by Cheapflights users on 8/17. 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.
mar. 11/187:00 amSTL - KIX
1 stop20h 50mJapan Airlines
vie. 12/56:45 amKIX - STL
2 stops22h 50mJapan Airlines
Deal found 8/17$746
This FlightHub deal was found by Cheapflights users on 8/17. 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.
mar. 11/187:00 amSTL - KIX
1 stop20h 50mJapan Airlines
sáb. 12/66:45 amKIX - STL
2 stops19h 21mJapan Airlines
Deal found 8/17$747
This United Airlines deal was found by Cheapflights users on 8/17. 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.
sáb. 9/135:49 pmSTL - KIX
1 stop31h 01mUnited Airlines
mar. 9/308:25 amKIX - STL
2 stops23h 53mUnited Airlines
Deal found 8/17$748

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Kansai Intl 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 agosto 18, 2025.
Use the filters below to find and compare flights from St. Louis to Osaka Kansai Intl Airport that are best for you.

Fly from

St. Louis

Fly to

Kansai Intl

Route

Depart

Return

Price

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mar. 9/16

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

jue. 10/2

4:50 pm-8:46 pm

2 stops17h 56m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mié. 9/17

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

jue. 10/2

4:50 pm-8:46 pm

2 stops17h 56m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mar. 9/16

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

vie. 10/3

4:50 pm-3:44 pm

2 stops36h 54m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mié. 9/17

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

mar. 9/30

4:50 pm-10:49 am

2 stops31h 59m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mar. 9/16

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

mié. 10/1

4:50 pm-11:58 pm

2 stops21h 08m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mar. 9/16

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

mar. 9/30

4:50 pm-8:46 pm

2 stops17h 56m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mié. 9/17

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

mié. 10/1

4:50 pm-10:49 am

2 stops31h 59m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

mié. 9/17

5:15 am-2:50 pm

2 stops19h 35m

Osaka Kansai Intl

vie. 10/3

4:50 pm-10:49 am

2 stops31h 59m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

sáb. 8/23

4:40 pm-2:50 pm

2 stops32h 10m

$413

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

sáb. 8/23

3:20 pm-7:30 pm

2 stops38h 10m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 12 results
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Best time to book a flight from St. Louis to Kansai Intl

Have a flexible travel schedule? Discover the best time to fly to Kansai Intl from St. Louis 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.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Kansai Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Osaka Kansai Intl?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Osaka Kansai Intl. On average, Lambert-St Louis has 0 outbound flights to Osaka Kansai Intl per day from 0 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from St. Louis to Osaka Kansai Intl Airport?

    Departing from St. Louis to Osaka Kansai Intl Airport will take you 19h 35m. The distance between St. Louis and Osaka Kansai Intl Airport is about 6595 mi.

  • Can I find deals for flights from St. Louis to Kansai Intl that include hotel bookings?

    Yes. In addition to deals on St. Louis to Kansai Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Kansai Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Kansai Intl.

  • Can I find deals for business class flights from St. Louis to Kansai Intl?

    Yes. Cheapflights offers flight deals from St. Louis to Kansai Intl 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 St. Louis to Osaka Kansai Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Osaka Kansai Intl Airport (average of $873). Flying from St. Louis to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,313). 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 Kansai Intl Airport?

Book flights to Osaka Kansai Intl Airport if you plan to visit one of these locations
Izumisano
Nara
Nishinomiya
Himeji

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