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Kansai Intl

$424+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KIX
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
1 adult, Economy
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Cheap 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 July 12, 2026.

This Air Canada deal was found by Cheapflights users on 7/8. 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.
Tue 9/1512:10 pm
STL
-
KIX
2 stops38h 15m
Air Canada
Tue 9/226:00 pm
KIX
-
STL
2 stops38h 41m
Air Canada
Deal found 7/8$914
This CheapOair deal was found by Cheapflights users on 7/8. 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.
Sun 11/17:33 am
STL
-
KIX
2 stops43h 07m
Air Canada
Thu 11/127:25 pm
KIX
-
STL
2 stops37h 41m
Air Canada
Deal found 7/8$920
This Air Canada deal was found by Cheapflights users on 7/7. 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.
Sun 10/1112:10 pm
STL
-
KIX
2 stops38h 15m
Air Canada
Thu 10/297:25 pm
KIX
-
STL
2 stops34h 01m
Air Canada
Deal found 7/7$1,000
This FlightHub deal was found by Cheapflights users on 7/9. 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 11/236:00 am
STL
-
KIX
2 stops20h 40m
Air Canada
Mon 11/307:25 pm
KIX
-
STL
2 stops35h 01m
Air Canada
Deal found 7/9$1,047
This Air Canada deal was found by Cheapflights users on 7/11. 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.
Wed 10/286:00 am
STL
-
KIX
2 stops21h 40m
Multiple Airlines
Wed 11/117:35 am
KIX
-
STL
2 stops46h 51m
Multiple Airlines
Deal found 7/11$1,056
This Air Canada deal was found by Cheapflights users on 7/9. 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 10/2112:10 pm
STL
-
KIX
2 stops38h 15m
Multiple Airlines
Wed 10/287:35 am
KIX
-
STL
2 stops45h 51m
Multiple Airlines
Deal found 7/9$1,074
This Expedia deal was found by Cheapflights users on 7/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:02 am
STL
-
KIX
2 stops34h 38m
Multiple Airlines
Mon 9/287:25 pm
KIX
-
STL
2 stops37h 13m
Multiple Airlines
Deal found 7/10$1,168
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:28 am
STL
-
KIX
1 stop18h 17m
United Airlines
Wed 11/118:20 am
KIX
-
STL
2 stops20h 53m
United Airlines
Deal found 7/11$1,173

Find 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 July 12, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$914
(Air Canada)

One-way from

$424
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,375
Provider with most accurate pricing for Lambert-St Louis-Osaka Kansai Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Osaka Kansai Intl flights.
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From Lambert-St Louis to Osaka Kansai Intl
Search Deals
One-way flight from Lambert-St Louis to Osaka Kansai Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($203 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($84 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 12, 2026.
Use the filters below to find and compare flights from St. Louis to Osaka Kansai Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 10/28

6:00 am-5:40 pm

2 stops21h 40m

Osaka Kansai Intl

Wed 11/11

7:35 am-3:26 pm

2 stops46h 51m

$1,056

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 8/4

5:10 am-2:50 pm

2 stops19h 40m

Osaka Kansai Intl

Tue 8/11

9:20 am-11:38 pm

2 stops28h 18m

$1,221

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 9/15

5:00 pm-2:50 pm

3 stops31h 50m

Osaka Kansai Intl

Tue 9/22

9:45 am-11:43 pm

2 stops27h 58m

$1,224
Quickest round-trip

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 10/11

7:08 am-2:50 pm

1 stop17h 42m

Osaka Kansai Intl

Thu 10/29

6:35 pm-10:10 pm

1 stop17h 35m

$1,235

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 10/18

7:08 am-2:50 pm

1 stop17h 42m

Osaka Kansai Intl

Mon 10/26

6:35 pm-10:10 pm

1 stop17h 35m

$1,285

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 8/11

5:10 am-2:50 pm

2 stops19h 40m

Osaka Kansai Intl

Mon 9/28

4:55 pm-6:43 pm

1 stop15h 48m

$1,313
Cheapest one-way

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 9/10

8:10 pm-9:15 am

3 stops47h 05m

$424

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 9/12

10:35 am-9:15 am

3 stops56h 40m

$439

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 8/13

6:00 am-4:25 pm

2 stops20h 25m

$477

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 8/13

6:34 pm-9:15 am

3 stops48h 41m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 13 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on St. Louis-Osaka Kansai Intl Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on St. Louis-Osaka Kansai Intl Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from St. Louis-Osaka Kansai Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Osaka Kansai Intl Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Osaka Kansai Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 40m. 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.

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
Nara
Izumisano
Himeji

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