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Kansai Intl

$611+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KIX
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
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 May 9, 2026.

This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:42 pm
STL
-
KIX
2 stops29h 38m
Delta
Tue 9/229:05 am
KIX
-
STL
2 stops25h 45m
Delta
Deal found 5/8$1,241
This Delta deal was found by Cheapflights users on 5/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:20 am
STL
-
KIX
2 stops24h 25m
Delta
Sat 8/152:15 am
KIX
-
STL
2 stops36h 26m
Delta
Deal found 5/8$1,319
This oojo deal was found by Cheapflights users on 5/5. 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.
Tue 9/153:17 pm
STL
-
KIX
2 stops28h 53m
EVA Air
Tue 9/226:30 pm
KIX
-
STL
2 stops33h 51m
EVA Air
Deal found 5/5$1,344
This Cathay Pacific deal was found by Cheapflights users on 5/7. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:51 pm
STL
-
KIX
2 stops30h 19m
Multiple Airlines
Tue 9/229:45 am
KIX
-
STL
2 stops26h 15m
Multiple Airlines
Deal found 5/7$1,355
This Cathay Pacific deal was found by Cheapflights users on 5/4. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am
STL
-
KIX
2 stops30h 40m
Multiple Airlines
Mon 11/164:55 pm
KIX
-
STL
2 stops44h 34m
Multiple Airlines
Deal found 5/4$1,405
This Cathay Pacific deal was found by Cheapflights users on 5/5. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:54 pm
STL
-
KIX
2 stops28h 01m
Multiple Airlines
Sat 8/159:05 am
KIX
-
STL
2 stops28h 37m
Multiple Airlines
Deal found 5/5$1,406
This Expedia deal was found by Cheapflights users on 5/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/243:24 pm
STL
-
KIX
2 stops29h 31m
Multiple Airlines
Thu 1/2810:55 am
KIX
-
STL
2 stops42h 31m
Multiple Airlines
Deal found 5/7$1,409
This oojo deal was found by Cheapflights users on 5/6. 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.
Sun 10/44:40 pm
STL
-
KIX
2 stops27h 30m
EVA Air
Wed 12/96:10 pm
KIX
-
STL
2 stops35h 16m
EVA Air
Deal found 5/6$1,417

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 May 9, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,241
(Delta)

One-way from

$611
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,775
Provider with most accurate pricing for Lambert-St Louis-Osaka Kansai Intl flight deals.
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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 ($206 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 May 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 May 9, 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

Tue 9/15

3:42 pm-11:20 am

2 stops29h 38m

Osaka Kansai Intl

Tue 9/22

9:05 am-8:50 pm

2 stops25h 45m

$1,241

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 9/15

6:51 pm-3:10 pm

2 stops30h 19m

Osaka Kansai Intl

Tue 9/22

9:45 am-10:00 pm

2 stops26h 15m

$1,355

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 9/15

8:55 am-4:25 pm

1 stop17h 30m

Osaka Kansai Intl

Tue 9/22

6:00 pm-6:41 pm

2 stops38h 41m

$1,466

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 8/6

9:31 am-12:55 pm

2 stops37h 24m

Osaka Kansai Intl

Sat 8/15

9:05 am-11:42 pm

2 stops28h 37m

$1,474
Quickest round-trip

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 8/6

6:00 am-6:45 pm

1 stop22h 45m

Osaka Kansai Intl

Sat 8/15

5:45 pm-11:42 pm

2 stops19h 57m

$1,522
Cheapest one-way

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 7/29

7:03 pm-10:05 am

3 stops49h 02m

$611

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 7/29

6:37 am-6:45 pm

1 stop22h 08m

$705
Quickest one-way

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 7/29

5:10 am-2:50 pm

2 stops19h 40m

$715

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Sorted by cheapest first
  • 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 29h 38m. 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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