$679+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KIX
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Kansai Intl with Cheapflights
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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
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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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Last-minute
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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 March 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 March 10, 2026.
This Air Canada deal was found by Cheapflights users on 3/9. 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
STL
- KIX
2 stops38h 15m
Air Canada
Tue 9/226:00 pm
KIX
- STL
2 stops38h 41m
Air Canada
Deal found 3/9![Air Canada logo]()
$853
This Air Canada deal was found by Cheapflights users on 3/8. 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 9/292:40 pm
STL
- KIX
2 stops35h 45m
Air Canada
Wed 10/76:00 pm
KIX
- STL
1 stop16h 00m
Air Canada
Deal found 3/8![Air Canada logo]()
$863
This Air Canada deal was found by Cheapflights users on 3/10. 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.
Thu 10/12:40 pm
STL
- KIX
2 stops35h 45m
Air Canada
Tue 10/206:00 pm
KIX
- STL
2 stops38h 41m
Air Canada
Deal found 3/10![Air Canada logo]()
$907
This Air Canada deal was found by Cheapflights users on 3/5. 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.
Sun 9/2712:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Thu 10/16:00 pm
KIX
- STL
2 stops38h 41m
Air Canada
Deal found 3/5![Air Canada logo]()
$938
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 March 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 March 10, 2026.
This lastminute.com deal was found by Cheapflights users on 3/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:21 am
STL
- KIX
1 stop22h 24m
Japan Airlines
Wed 4/296:45 am
KIX
- STL
2 stops21h 18m
Japan Airlines
Deal found 3/8![Japan Airlines logo]()
$1,223
This Air Canada deal was found by Cheapflights users on 3/9. 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 6/27:05 am
STL
- KIX
2 stops43h 20m
Air Canada
Wed 6/176:00 pm
KIX
- STL
2 stops40h 25m
Air Canada
Deal found 3/9![Air Canada logo]()
$1,279
This Gotogate deal was found by Cheapflights users on 3/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:05 pm
STL
- KIX
2 stops39h 10m
Multiple Airlines
Sun 4/269:00 pm
KIX
- STL
2 stops56h 25m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$1,281
This American Airlines deal was found by Cheapflights users on 3/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:21 am
STL
- KIX
1 stop22h 24m
American Airlines
Sat 5/25:45 pm
KIX
- STL
1 stop20h 12m
American Airlines
Deal found 3/7![American Airlines logo]()
$1,333
This United Airlines deal was found by Cheapflights users on 3/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:30 am
STL
- KIX
2 stops21h 20m
United Airlines
Mon 4/274:55 pm
KIX
- STL
1 stop26h 55m
United Airlines
Deal found 3/6![United Airlines logo]()
$1,334
This oojo deal was found by Cheapflights users on 3/5. 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.
Fri 4/176:11 pm
STL
- KIX
3 stops30h 39m
Cathay Pacific
Fri 4/249:05 am
KIX
- STL
2 stops37h 49m
Cathay Pacific
Deal found 3/5![Cathay Pacific logo]()
$1,465
This China Airlines deal was found by Cheapflights users on 3/5. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:05 pm
STL
- KIX
2 stops27h 55m
Multiple Airlines
Fri 8/72:00 pm
KIX
- STL
2 stops35h 40m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$1,439
This Air Canada deal was found by Cheapflights users on 3/9. 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 6/131:00 pm
STL
- KIX
2 stops40h 50m
Air Canada
Sun 6/216:00 pm
KIX
- STL
2 stops41h 16m
Air Canada
Deal found 3/9![Air Canada logo]()
$1,474
This Cathay Pacific deal was found by Cheapflights users on 3/8. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:11 pm
STL
- KIX
2 stops30h 59m
Multiple Airlines
Wed 4/294:15 pm
KIX
- STL
3 stops44h 44m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$1,443
This Travelocity deal was found by Cheapflights users on 3/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:21 am
STL
- KIX
3 stops42h 29m
Multiple Airlines
Wed 6/109:05 am
KIX
- STL
2 stops23h 55m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,516
This China Airlines deal was found by Cheapflights users on 3/5. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:20 pm
STL
- KIX
2 stops30h 30m
Multiple Airlines
Mon 4/277:05 pm
KIX
- STL
3 stops33h 45m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$1,531
Last-minute flights from St. Louis to Kansai IntlDiscover last-minute flight deals from St. Louis to Kansai Intl. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Kansai Intl. Data last updated March 10, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 3/7. 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 4/197:05 am
STL
- KIX
2 stops35h 30m
Japan Airlines
Sat 5/22:50 pm
KIX
- STL
2 stops37h 13m
Japan Airlines
Deal found 3/7![Japan Airlines logo]()
$1,140
This flugladen.de deal was found by Cheapflights users on 3/5. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:05 pm
STL
- KIX
2 stops38h 55m
Multiple Airlines
Sun 4/269:00 pm
KIX
- STL
2 stops56h 25m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$1,237
This Air Canada deal was found by Cheapflights users on 3/5. 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.
Mon 4/204:05 pm
STL
- KIX
2 stops38h 55m
Multiple Airlines
Mon 4/276:00 pm
KIX
- STL
2 stops35h 25m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$968
This American Airlines deal was found by Cheapflights users on 3/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:21 am
STL
- KIX
1 stop22h 24m
American Airlines
Mon 4/275:45 pm
KIX
- STL
1 stop20h 12m
American Airlines
Deal found 3/5![American Airlines logo]()
$1,314
This Air Canada deal was found by Cheapflights users on 3/7. 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.
Tue 4/214:05 pm
STL
- KIX
2 stops34h 20m
Air Canada
Tue 4/286:00 pm
KIX
- STL
2 stops35h 25m
Air Canada
Deal found 3/7![Air Canada logo]()
$1,016
This Priceline deal was found by Cheapflights users on 3/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:27 pm
STL
- KIX
2 stops28h 13m
Cathay Pacific
Tue 4/284:15 pm
KIX
- STL
3 stops41h 18m
Cathay Pacific
Deal found 3/7![Cathay Pacific logo]()
$1,213
This Gurufare deal was found by Cheapflights users on 3/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:05 am
STL
- KIX
2 stops23h 55m
Japan Airlines
Tue 4/285:45 pm
KIX
- STL
1 stop20h 12m
Japan Airlines
Deal found 3/7![Japan Airlines logo]()
$1,256
This lastminute.com deal was found by Cheapflights users on 3/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:21 am
STL
- KIX
1 stop22h 24m
Japan Airlines
Wed 4/296:45 am
KIX
- STL
2 stops21h 18m
Japan Airlines
Deal found 3/8![Japan Airlines logo]()
$1,223
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 March 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 March 10, 2026.
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:15 am
STL
- KIX
2 stops25h 25m
Delta
Deal found 3/9![Delta logo]()
$679
This KAYAK deal was found by Cheapflights users on 3/9. 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 5/136:21 am
STL
- KIX
3 stops42h 29m
Cathay Pacific
Deal found 3/9![Cathay Pacific logo]()
$906
This oojo deal was found by Cheapflights users on 3/9. 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.
Wed 5/136:21 am
STL
- KIX
1 stop22h 24m
Japan Airlines
Deal found 3/9![Japan Airlines logo]()
$1,236
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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $968 (Air Canada) |
One-way from | $679 (Delta) |
Popular in | May |
Cheapest in | February |
Average price | $1,387 |
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 March 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 - KIX
STLKIX
Lambert-St Louis
Wed 4/22
6:21 am-6:45 pm
1 stop22h 24m
Osaka Kansai Intl
Wed 4/29
6:45 am-2:03 pm
2 stops21h 18m
$1,223
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Tue 6/2
7:05 am-4:25 pm
2 stops43h 20m
Osaka Kansai Intl
Wed 6/17
6:00 pm-8:25 pm
2 stops40h 25m
$1,279
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sun 4/19
4:05 pm-9:15 pm
2 stops39h 10m
Osaka Kansai Intl
Sun 4/26
9:00 pm-3:25 pm
2 stops56h 25m
$1,281
Quickest round-trip
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sun 4/19
6:21 am-6:45 pm
1 stop22h 24m
Osaka Kansai Intl
Sat 5/2
5:45 pm-11:57 pm
1 stop20h 12m
$1,333
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Mon 4/20
8:30 am-7:50 pm
2 stops21h 20m
Osaka Kansai Intl
Mon 4/27
4:55 pm-5:50 am
1 stop26h 55m
$1,334
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sun 8/2
6:05 pm-12:00 pm
2 stops27h 55m
Osaka Kansai Intl
Fri 8/7
2:00 pm-11:40 am
2 stops35h 40m
$1,439
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Wed 4/22
6:11 pm-3:10 pm
2 stops30h 59m
Osaka Kansai Intl
Wed 4/29
4:15 pm-10:59 pm
3 stops44h 44m
$1,443
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Fri 4/17
6:11 pm-2:50 pm
3 stops30h 39m
Osaka Kansai Intl
Fri 4/24
9:05 am-8:54 am
2 stops37h 49m
$1,465
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sat 6/13
1:00 pm-7:50 pm
2 stops40h 50m
Osaka Kansai Intl
Sun 6/21
6:00 pm-9:16 pm
2 stops41h 16m
$1,474
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Wed 5/13
6:21 am-2:50 pm
3 stops42h 29m
Osaka Kansai Intl
Wed 6/10
9:05 am-7:00 pm
2 stops23h 55m
$1,516
Showing 1-10 of 13 resultsSorted by cheapest first
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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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.
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.
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 March 10, 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.
Crew
8.7
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Overall
8.3
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
Crew
8.7
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Overall
8.3
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
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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St. Louis and Kansai Intl flights
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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 March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$751 | Average$1,060 | FlexibilityNo cancel fee | On-time79% |