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Kansai Intl

$437+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KIX
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Air Canada deal was found by Cheapflights users on 1/25. 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 9/304:05 pm
STL
-
KIX
1 stop34h 20m
Air Canada
Wed 10/76:05 pm
KIX
-
STL
1 stop35h 11m
Air Canada
Deal found 1/25$776
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/244:30 pm
STL
-
KIX
2 stops33h 10m
United Airlines
Tue 3/36:35 pm
KIX
-
STL
2 stops29h 48m
United Airlines
Deal found 1/26$793
This Air Canada deal was found by Cheapflights users on 1/24. 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 8/2312:10 pm
STL
-
KIX
2 stops38h 15m
Air Canada
Tue 9/86:05 pm
KIX
-
STL
2 stops38h 12m
Air Canada
Deal found 1/24$837
This Air Canada deal was found by Cheapflights users on 1/24. 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 8/242:40 pm
STL
-
KIX
2 stops59h 45m
Air Canada
Tue 9/86:05 pm
KIX
-
STL
2 stops38h 12m
Air Canada
Deal found 1/24$842
This FlightHub deal was found by Cheapflights users on 1/24. 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 8/239:30 am
STL
-
KIX
2 stops22h 20m
ANA
Fri 9/47:00 am
KIX
-
STL
2 stops21h 18m
ANA
Deal found 1/24$846
This FlightHub deal was found by Cheapflights users on 1/24. 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 8/239:30 am
STL
-
KIX
2 stops22h 20m
ANA
Sat 9/53:50 pm
KIX
-
STL
2 stops36h 29m
ANA
Deal found 1/24$847
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 2/196:00 pm
STL
-
KIX
2 stops31h 40m
United Airlines
Mon 2/236:35 pm
KIX
-
STL
2 stops29h 48m
United Airlines
Deal found 1/25$856
This United Airlines deal was found by Cheapflights users on 1/24. 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 8/195:20 am
STL
-
KIX
2 stops19h 30m
United Airlines
Fri 9/44:55 pm
KIX
-
STL
2 stops35h 24m
United Airlines
Deal found 1/24$860
This United Airlines deal was found by Cheapflights users on 1/26. 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 8/224:30 pm
STL
-
KIX
2 stops32h 20m
United Airlines
Sat 9/54:55 pm
KIX
-
STL
2 stops20h 48m
United Airlines
Deal found 1/26$861

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$793
(United Airlines)

One-way from

$437
(United Airlines)

Popular in

May

Cheapest in

February
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.
Search Deals
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. 17% potential increase in price ($253 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($56 potential savings vs. average RT price).
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 January 27, 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

St. Louis

Fly to

Kansai Intl

Route

Depart

Return

Price

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/24

4:30 pm-4:40 pm

2 stops33h 10m

Osaka Kansai Intl

Tue 3/3

6:35 pm-9:23 am

2 stops29h 48m

$793

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 2/19

1:11 pm-4:40 pm

2 stops36h 29m

Osaka Kansai Intl

Mon 2/23

6:35 pm-9:23 am

2 stops29h 48m

$856

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/3

6:00 am-6:15 pm

2 stops21h 15m

Osaka Kansai Intl

Thu 2/19

9:10 pm-10:36 am

2 stops28h 26m

$867

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/3

8:31 am-8:25 am

2 stops32h 54m

Osaka Kansai Intl

Thu 2/19

5:50 pm-11:59 pm

1 stop21h 09m

$882

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 3/9

6:51 am-4:40 pm

1 stop19h 49m

Osaka Kansai Intl

Wed 3/25

8:20 am-11:51 pm

2 stops29h 31m

$889

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 3/9

6:51 am-4:40 pm

1 stop19h 49m

Osaka Kansai Intl

Tue 3/24

6:35 pm-9:07 pm

2 stops40h 32m

$909

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 3/8

7:41 am-4:40 pm

2 stops42h 59m

Osaka Kansai Intl

Tue 3/24

6:35 pm-2:42 pm

2 stops34h 07m

$912

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 3/7

5:00 am-4:40 pm

2 stops44h 40m

$437

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 2/18

8:17 am-8:35 am

2 stops33h 18m

$438

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 2/15

8:17 am-8:35 am

2 stops33h 18m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 14 results
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Compare providers for flights from St. Louis to Kansai Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Kansai Intl in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Osaka Kansai Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Osaka Kansai Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 21h 15m. The distance between St. Louis and Osaka Kansai Intl Airport is about 6595 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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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