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Kansai Intl

$410+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KIX
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 February 11, 2026.

This Air Canada deal was found by Cheapflights users on 2/10. 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 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 2/10$821
This Air Canada deal was found by Cheapflights users on 2/8. 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.
Wed 9/1612:10 pm
STL
-
KIX
2 stops38h 15m
Air Canada
Tue 9/226:00 pm
KIX
-
STL
2 stops38h 41m
Air Canada
Deal found 2/8$829
This Air Canada deal was found by Cheapflights users on 2/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:40 pm
STL
-
KIX
1 stop35h 45m
Air Canada
Wed 10/76:00 pm
KIX
-
STL
1 stop34h 00m
Air Canada
Deal found 2/10$831
This Air Canada deal was found by Cheapflights users on 2/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm
STL
-
KIX
2 stops35h 45m
Air Canada
Sat 10/106:00 pm
KIX
-
STL
2 stops34h 00m
Air Canada
Deal found 2/10$879
This KAYAK deal was found by Cheapflights users on 2/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:30 am
STL
-
KIX
1 stop22h 15m
Japan Airlines
Thu 9/35:45 pm
KIX
-
STL
1 stop19h 23m
Japan Airlines
Deal found 2/9$881
This KAYAK deal was found by Cheapflights users on 2/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:30 am
STL
-
KIX
1 stop22h 15m
Japan Airlines
Tue 9/86:40 am
KIX
-
STL
2 stops23h 08m
Japan Airlines
Deal found 2/9$884
This KAYAK deal was found by Cheapflights users on 2/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:35 am
STL
-
KIX
2 stops34h 00m
Japan Airlines
Thu 9/35:45 pm
KIX
-
STL
1 stop19h 23m
Japan Airlines
Deal found 2/9$888
This FlightHub deal was found by Cheapflights users on 2/9. 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.
Sun 8/239:23 am
STL
-
KIX
2 stops22h 27m
ANA
Sat 9/57:00 am
KIX
-
STL
2 stops19h 20m
ANA
Deal found 2/9$891

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$917
(KAYAK)

One-way from

$410
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$819
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. 21% potential increase in price ($320 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 11, 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 3/10

8:00 am-8:25 am

2 stops34h 25m

Osaka Kansai Intl

Tue 3/17

7:00 am-2:07 pm

2 stops21h 07m

$917

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 5/26

2:20 pm-4:25 pm

2 stops36h 05m

Osaka Kansai Intl

Thu 6/11

6:00 pm-12:06 pm

2 stops32h 06m

$1,016

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 3/10

6:51 am-4:40 pm

1 stop19h 49m

Osaka Kansai Intl

Tue 3/17

6:35 pm-9:21 am

2 stops28h 46m

$1,081

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 5/18

7:30 am-9:05 am

2 stops35h 35m

Osaka Kansai Intl

Mon 6/1

7:35 am-8:05 pm

2 stops26h 30m

$1,094

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 5/23

7:30 am-4:25 pm

2 stops42h 55m

Osaka Kansai Intl

Thu 6/11

7:50 pm-8:05 pm

2 stops38h 15m

$1,133

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 5/18

2:20 pm-4:25 pm

2 stops60h 05m

Osaka Kansai Intl

Mon 6/1

6:00 pm-12:06 pm

2 stops56h 06m

$1,192

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 3/30

6:50 pm-2:50 pm

3 stops30h 00m

Osaka Kansai Intl

Fri 4/10

5:35 pm-8:54 am

2 stops53h 19m

$1,199

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 5/17

8:03 pm-10:00 pm

2 stops35h 57m

Osaka Kansai Intl

Mon 6/1

5:45 pm-11:59 pm

1 stop20h 14m

$1,306

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 5/18

10:00 am-2:50 pm

2 stops38h 50m

Osaka Kansai Intl

Mon 6/1

9:20 am-3:46 pm

3 stops44h 26m

$1,311

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 5/11

8:12 pm-9:00 pm

3 stops58h 48m

$410

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 16 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 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.

Reviews of airlines servicing Kansai Intl

Get insights into the airlines that provide service to Kansai Intl. 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 Kansai Intl. Reviews last updated February 11, 2026.
Peruse reviews from past customers who have flown with Japan Airlines from St. Louis to Osaka Kansai Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,704 reviews

Comfort

8.2

Entertainment

7.8

Overall

8.3

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

BKK - NRT

Everything was was a great experience, the staff was very friendly and always had a smile on the face.
Japan Airlines
8.3
Very good
1,704 reviews
Japan Airlines
8.3
Very good
1,704 reviews

Comfort

8.2

Entertainment

7.8

Overall

8.3

Crew

8.7

Boarding

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

BKK - NRT

Everything was was a great experience, the staff was very friendly and always had a smile on the face.

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 1 airline. 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 49m. 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.

  • What is the cheapest airline to fly from St. Louis to Osaka Kansai Intl Airport round-trip?

    According to our current data, Japan Airlines ($751), offers the cheapest pricing from St. Louis to Osaka Kansai Intl Airport.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Kansai Intl

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Osaka Itami flights
Kansas City to Kansai Intl flights

Top airline flying from St. Louis to Kansai Intl

Discover the top airline that operate flights from St. Louis to Kansai Intl. 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 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$751Average$1,060FlexibilityNo cancel feeOn-time79%

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