$579+ Cheap flights from St. Louis (STL) to Kansai Intl (KIX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KIX
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Kansai Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Kansai Intl
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Cheapest flights from St. Louis to Kansai IntlExplore 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 September 10, 2026.
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 September 10, 2026.
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Tue 9/1512:10 pm -
2 stops38h 15m
Tue 9/226:00 pm -
2 stops38h 41m
Deal found 9/9![Air Canada logo]()
$901
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:50 pm -
2 stops31h 50m
Sun 12/69:00 pm -
2 stops57h 26m
Deal found 9/8![Multiple Airlines logo]()
$1,014
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:30 pm -
2 stops31h 20m
Tue 9/224:55 pm -
2 stops17h 43m
Deal found 9/8![United Airlines logo]()
$1,059
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:00 am -
2 stops24h 40m
Mon 9/212:15 am -
2 stops35h 27m
Deal found 9/6![Delta logo]()
$1,069
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 10/2412:10 pm -
2 stops39h 30m
Sat 10/317:25 pm -
2 stops36h 32m
Deal found 9/9![Air Canada logo]()
$1,096
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Fri 10/162:40 pm -
1 stop35h 45m
Mon 10/196:00 pm -
2 stops38h 41m
Deal found 9/8![Air Canada logo]()
$1,107
This Justfly.com deal was found by Cheapflights users on 9/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:30 am -
2 stops40h 10m
Mon 11/303:20 pm -
2 stops35h 50m
Deal found 9/8![ANA logo]()
$1,112
This Justfly.com deal was found by Cheapflights users on 9/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/221:08 pm -
2 stops41h 42m
Mon 11/303:20 pm -
2 stops41h 56m
Deal found 9/8![ANA logo]()
$1,118
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/151:08 pm -
2 stops36h 37m
Wed 12/23:20 pm -
2 stops35h 50m
Deal found 9/8![United Airlines logo]()
$1,122
Best flights from St. Louis to Kansai IntlDiscover carefully curated flight deals from St. Louis to Kansai Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from St. Louis to Kansai Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This oojo deal was found by Cheapflights users on 9/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:29 am -
2 stops35h 06m
Thu 10/296:00 pm -
1 stop19h 46m
Deal found 9/9![Japan Airlines logo]()
$1,176
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:05 pm -
1 stop30h 40m
Sat 12/56:35 pm -
2 stops30h 14m
Deal found 9/8![United Airlines logo]()
$1,181
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Mon 2/14:05 pm -
2 stops36h 25m
Fri 2/53:20 pm -
2 stops39h 06m
Deal found 9/9![Air Canada logo]()
$1,185
This Cathay Pacific deal was found by Cheapflights users on 9/5. 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.
Sun 10/1111:31 am -
2 stops29h 09m
Thu 10/294:15 pm -
3 stops42h 42m
Deal found 9/5![Multiple Airlines logo]()
$1,239
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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.
Thu 10/226:04 am -
3 stops42h 46m
Thu 10/296:05 pm -
2 stops40h 52m
Deal found 9/7![Multiple Airlines logo]()
$1,287
Last-minute flights from St. Louis to Kansai IntlDiscover last-minute flight deals from St. Louis to Kansai Intl. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Kansai Intl. Data last updated September 10, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Tue 9/1512:10 pm -
2 stops38h 15m
Tue 9/226:00 pm -
2 stops38h 41m
Deal found 9/9![Air Canada logo]()
$901
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:30 pm -
2 stops31h 20m
Tue 9/224:55 pm -
2 stops17h 43m
Deal found 9/8![United Airlines logo]()
$1,059
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:00 am -
2 stops24h 40m
Mon 9/212:15 am -
2 stops35h 27m
Deal found 9/6![Delta logo]()
$1,069
This oojo deal was found by Cheapflights users on 9/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:30 am -
1 stop22h 15m
Tue 9/226:40 am -
2 stops30h 50m
Deal found 9/7![Japan Airlines logo]()
$1,154
This oojo deal was found by Cheapflights users on 9/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:29 am -
2 stops35h 06m
Thu 10/296:50 am -
2 stops24h 03m
Deal found 9/7![Japan Airlines logo]()
$1,171
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Fri 10/162:40 pm -
1 stop35h 45m
Mon 10/196:00 pm -
2 stops38h 41m
Deal found 9/8![Air Canada logo]()
$1,107
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 10/2412:10 pm -
2 stops39h 30m
Sat 10/317:25 pm -
2 stops36h 32m
Deal found 9/9![Air Canada logo]()
$1,096
One-way flights from St. Louis to Kansai IntlSearch for one-way flight options from St. Louis to Kansai Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from St. Louis to Kansai Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Air Canada deal was found by Cheapflights users on 9/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:10 pm -
2 stops38h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Air Canada logo]()
$579
This Justfly.com deal was found by Cheapflights users on 9/5. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:01 am -
3 stops37h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Cathay Pacific logo]()
$634
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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.
Sat 9/195:00 pm -
3 stops31h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$644
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 September 10, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,014 (Expedia) |
One-way from | $579 (Air Canada) |
Popular in | December |
Cheapest in | May |
Average price | $1,023 |
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 7,457,451 searches. Data last updated September 10, 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
Cheapest round-trip
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Sat 9/19
12:10 pm-4:25 pm
2 stops38h 15m
Osaka Kansai Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$579
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Sat 9/19
11:01 am-2:50 pm
3 stops37h 49m
Osaka Kansai Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$634
Quickest round-trip
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Sat 9/19
5:00 pm-2:50 pm
3 stops31h 50m
Osaka Kansai Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$644
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Sun 10/11
7:29 am-8:35 am
2 stops35h 06m
Osaka Kansai Intl
Thu 10/29
6:00 pm-11:46 pm
1 stop19h 46m
$1,176
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Tue 11/24
7:05 pm-4:45 pm
1 stop30h 40m
Osaka Kansai Intl
Sat 12/5
6:35 pm-9:49 am
2 stops30h 14m
$1,181
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Mon 2/1
4:05 pm-7:30 pm
2 stops36h 25m
Osaka Kansai Intl
Fri 2/5
3:20 pm-3:26 pm
2 stops39h 06m
$1,185
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Sun 10/11
11:31 am-6:40 am
2 stops29h 09m
Osaka Kansai Intl
Thu 10/29
4:15 pm-8:57 pm
3 stops42h 42m
$1,239
St. LouisOsaka
STL Lambert-St Louis - KIX Osaka Kansai Intl
STLKIX
Lambert-St Louis
Thu 10/22
6:04 am-2:50 pm
3 stops42h 46m
Osaka Kansai Intl
Thu 10/29
6:05 pm-8:57 pm
2 stops40h 52m
$1,287
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.
STL-KIX
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.
Traveling to a place near Osaka Kansai Intl Airport?
Book flights to Osaka Kansai Intl Airport if you plan to visit one of these locationsNara
Izumisano
Himeji
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