$423+ Cheap flights from St. Louis (STL) to Japan
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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
Sep 22 — Sep 291
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Japan 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
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Cheapest flights from St. Louis to JapanExplore the most affordable flight options available from St. Louis to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 23, 2026.
Explore the most affordable flight options available from St. Louis to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 23, 2026.
This Gotogate deal was found by Cheapflights users on 8/23. 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 8/3012:10 pm -
1 stop37h 15m
Tue 9/155:50 pm -
1 stop38h 51m
Deal found 8/23![Air Canada logo]()
$798
This Justfly.com deal was found by Cheapflights users on 8/23. 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 9/78:00 am -
2 stops40h 55m
Mon 9/285:50 pm -
2 stops41h 31m
Deal found 8/23![Air Canada logo]()
$813
This Orbitz deal was found by Cheapflights users on 8/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:54 pm -
2 stops30h 31m
Thu 9/105:50 pm -
2 stops32h 07m
Deal found 8/22![Air Canada logo]()
$816
This Air Canada deal was found by Cheapflights users on 8/19. 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 12/17:04 pm -
2 stops30h 26m
Wed 12/96:15 pm -
2 stops41h 58m
Deal found 8/19![Air Canada logo]()
$819
This Air Canada deal was found by Cheapflights users on 8/22. 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 9/2012:10 pm -
1 stop37h 15m
Wed 9/305:50 pm -
1 stop38h 51m
Deal found 8/22![Air Canada logo]()
$823
This Air Canada deal was found by Cheapflights users on 8/22. 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 8/22![Air Canada logo]()
$826
This Air Canada deal was found by Cheapflights users on 8/21. 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 9/712:10 pm -
1 stop37h 15m
Mon 9/145:50 pm -
1 stop34h 10m
Deal found 8/21![Air Canada logo]()
$828
This CheapOair deal was found by Cheapflights users on 8/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/72:40 pm -
1 stop35h 45m
Mon 9/146:00 pm -
2 stops62h 41m
Deal found 8/22![Air Canada logo]()
$833
This Air Canada deal was found by Cheapflights users on 8/23. 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 8/3112:10 pm -
2 stops38h 15m
Mon 9/146:00 pm -
2 stops34h 00m
Deal found 8/23![Air Canada logo]()
$839
This FlightHub deal was found by Cheapflights users on 8/23. 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.
Mon 9/72:40 pm -
2 stops41h 50m
Mon 9/286:05 pm -
2 stops34h 12m
Deal found 8/23![Multiple Airlines logo]()
$882
This Air Canada deal was found by Cheapflights users on 8/19. 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 9/1312:10 pm -
2 stops38h 15m
Sun 9/276:00 pm -
2 stops38h 41m
Deal found 8/19![Air Canada logo]()
$888
This Gotogate deal was found by Cheapflights users on 8/23. 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 8/308:55 am -
1 stop16h 45m
Tue 9/156:05 pm -
1 stop16h 15m
Deal found 8/23![Air Canada logo]()
$901
Best flights from St. Louis to JapanDiscover carefully curated flight deals from St. Louis to Japan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
Discover carefully curated flight deals from St. Louis to Japan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
This Air Canada deal was found by Cheapflights users on 8/22. 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 8/22![Air Canada logo]()
$826
This Gotogate deal was found by Cheapflights users on 8/22. 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.
Mon 9/78:55 am -
2 stops19h 45m
Mon 9/1412:50 pm -
2 stops21h 30m
Deal found 8/22![Multiple Airlines logo]()
$968
This Justfly.com deal was found by Cheapflights users on 8/20. 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.
Tue 9/158:30 am -
2 stops20h 25m
Tue 9/227:05 am -
2 stops18h 52m
Deal found 8/20![ANA logo]()
$1,098
This Delta deal was found by Cheapflights users on 8/22. 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.
Mon 9/76:00 am -
1 stop18h 15m
Mon 9/144:05 pm -
2 stops18h 30m
Deal found 8/22![Delta logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 8/19. 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 2/16:15 am -
1 stop18h 15m
Fri 2/126:00 pm -
1 stop15h 06m
Deal found 8/19![United Airlines logo]()
$1,109
This Cathay Pacific deal was found by Cheapflights users on 8/22. 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 10/111:01 am -
2 stops37h 29m
Sun 10/1110:00 pm -
2 stops39h 59m
Deal found 8/22![Cathay Pacific logo]()
$1,223
This Japan Airlines deal was found by Cheapflights users on 8/22. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/131:06 pm -
2 stops52h 59m
Wed 2/171:35 pm -
2 stops25h 13m
Deal found 8/22![Japan Airlines logo]()
$1,852
This Air Canada deal was found by Cheapflights users on 8/22. 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 2/144:05 pm -
2 stops37h 15m
Thu 2/182:30 pm -
2 stops39h 56m
Deal found 8/22![Air Canada logo]()
$1,061
This FlightHub deal was found by Cheapflights users on 8/22. 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.
Wed 11/186:00 am -
2 stops26h 30m
Thu 12/39:15 pm -
2 stops32h 11m
Deal found 8/22![ANA logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 8/18. 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 2/11:08 pm -
3 stops24h 42m
Wed 2/176:25 pm -
2 stops17h 34m
Deal found 8/18![United Airlines logo]()
$1,113
This Cathay Pacific deal was found by Cheapflights users on 8/19. 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 11/256:00 am -
2 stops39h 40m
Mon 11/303:00 pm -
2 stops42h 22m
Deal found 8/19![Multiple Airlines logo]()
$1,129
This Delta deal was found by Cheapflights users on 8/20. 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.
Thu 9/177:05 am -
2 stops19h 10m
Thu 9/244:05 pm -
2 stops18h 30m
Deal found 8/20![Delta logo]()
$1,169
This Air Canada deal was found by Cheapflights users on 8/22. 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 8/22![Air Canada logo]()
$1,064
This United Airlines deal was found by Cheapflights users on 8/22. 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 11/174:39 pm -
2 stops31h 21m
Tue 12/15:15 pm -
1 stop20h 00m
Deal found 8/22![United Airlines logo]()
$1,114
This FlightHub deal was found by Cheapflights users on 8/19. 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 9/138:30 am -
2 stops22h 05m
Sun 9/2711:00 am -
2 stops22h 41m
Deal found 8/19![ANA logo]()
$1,123
This Cathay Pacific deal was found by Cheapflights users on 8/22. 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 11/1711:32 am -
2 stops27h 58m
Tue 12/13:30 pm -
3 stops47h 29m
Deal found 8/22![Cathay Pacific logo]()
$1,238
This Cathay Pacific deal was found by Cheapflights users on 8/20. 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 10/211:06 pm -
2 stops36h 24m
Wed 10/284:30 pm -
2 stops43h 29m
Deal found 8/20![Multiple Airlines logo]()
$1,129
This Delta deal was found by Cheapflights users on 8/20. 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.
Sun 9/66:00 am -
2 stops20h 15m
Sun 9/136:25 pm -
2 stops18h 51m
Deal found 8/20![Delta logo]()
$1,173
This CheapOair deal was found by Cheapflights users on 8/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:55 am -
2 stops19h 15m
Mon 9/142:00 pm -
2 stops20h 20m
Deal found 8/19![Air Canada logo]()
$1,088
This Cathay Pacific deal was found by Cheapflights users on 8/22. 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.
Mon 10/196:04 am -
2 stops41h 36m
Mon 10/263:30 pm -
3 stops46h 29m
Deal found 8/22![Cathay Pacific logo]()
$1,238
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/138:42 am -
1 stop40h 08m
Sun 9/274:55 pm -
1 stop15h 48m
Deal found 8/19![United Airlines logo]()
$1,134
This FlightHub deal was found by Cheapflights users on 8/18. 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.
Tue 11/247:30 am -
2 stops20h 25m
Sat 12/57:30 am -
2 stops25h 36m
Deal found 8/18![ANA logo]()
$1,162
This Delta deal was found by Cheapflights users on 8/18. 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.
Fri 2/56:00 am -
2 stops20h 45m
Sun 2/145:15 pm -
2 stops18h 34m
Deal found 8/18![Delta logo]()
$1,225
This Cathay Pacific deal was found by Cheapflights users on 8/21. 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.
Mon 10/196:04 am -
2 stops34h 46m
Fri 10/309:00 am -
2 stops28h 42m
Deal found 8/21![Multiple Airlines logo]()
$1,228
This Cathay Pacific deal was found by Cheapflights users on 8/19. 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 10/71:06 pm -
2 stops34h 49m
Mon 10/194:20 pm -
2 stops45h 39m
Deal found 8/19![Cathay Pacific logo]()
$1,276
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Fri 9/258:00 am -
1 stop23h 15m
Fri 10/95:15 pm -
1 stop35h 01m
Deal found 8/22![United Airlines logo]()
$1,161
This Air Canada deal was found by Cheapflights users on 8/22. 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 2/144:05 pm -
2 stops36h 15m
Thu 2/182:05 pm -
2 stops40h 21m
Deal found 8/22![Air Canada logo]()
$1,184
This Cathay Pacific deal was found by Cheapflights users on 8/18. 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.
Fri 10/27:21 am -
2 stops39h 24m
Fri 10/94:40 pm -
2 stops45h 02m
Deal found 8/18![Multiple Airlines logo]()
$1,229
This Delta deal was found by Cheapflights users on 8/20. 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.
Mon 10/197:20 pm -
2 stops27h 45m
Fri 10/305:15 pm -
2 stops20h 39m
Deal found 8/20![Delta logo]()
$1,237
This Cathay Pacific deal was found by Cheapflights users on 8/23. 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.
Mon 10/51:06 pm -
2 stops41h 19m
Mon 10/194:20 pm -
2 stops45h 39m
Deal found 8/23![Cathay Pacific logo]()
$1,277
Last-minute flights from St. Louis to JapanDiscover last-minute flight deals from St. Louis to Japan. Data last updated August 23, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Japan. Data last updated August 23, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 8/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:54 pm -
2 stops30h 31m
Thu 9/105:50 pm -
2 stops32h 07m
Deal found 8/22![Air Canada logo]()
$816
This Gotogate deal was found by Cheapflights users on 8/23. 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 8/3012:10 pm -
1 stop37h 15m
Tue 9/155:50 pm -
1 stop38h 51m
Deal found 8/23![Air Canada logo]()
$798
This Gotogate deal was found by Cheapflights users on 8/23. 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 8/308:55 am -
1 stop16h 45m
Tue 9/156:05 pm -
1 stop16h 15m
Deal found 8/23![Air Canada logo]()
$901
This Air Canada deal was found by Cheapflights users on 8/23. 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 8/3112:10 pm -
2 stops38h 15m
Mon 9/146:00 pm -
2 stops34h 00m
Deal found 8/23![Air Canada logo]()
$839
This Justfly.com deal was found by Cheapflights users on 8/23. 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 9/78:00 am -
2 stops40h 55m
Mon 9/285:50 pm -
2 stops41h 31m
Deal found 8/23![Air Canada logo]()
$813
This Air Canada deal was found by Cheapflights users on 8/21. 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 9/712:10 pm -
1 stop37h 15m
Mon 9/145:50 pm -
1 stop34h 10m
Deal found 8/21![Air Canada logo]()
$828
This CheapOair deal was found by Cheapflights users on 8/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/72:40 pm -
1 stop35h 45m
Mon 9/146:00 pm -
2 stops62h 41m
Deal found 8/22![Air Canada logo]()
$833
This FlightHub deal was found by Cheapflights users on 8/23. 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.
Mon 9/72:40 pm -
2 stops41h 50m
Mon 9/286:05 pm -
2 stops34h 12m
Deal found 8/23![Multiple Airlines logo]()
$882
This Air Canada deal was found by Cheapflights users on 8/19. 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 9/1312:10 pm -
2 stops38h 15m
Sun 9/276:00 pm -
2 stops38h 41m
Deal found 8/19![Air Canada logo]()
$888
This Air Canada deal was found by Cheapflights users on 8/22. 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 8/22![Air Canada logo]()
$826
This CheapOair deal was found by Cheapflights users on 8/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:55 am -
1 stop17h 15m
Thu 9/245:50 pm -
2 stops34h 10m
Deal found 8/21![Air Canada logo]()
$838
This Air Canada deal was found by Cheapflights users on 8/22. 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 9/2012:10 pm -
1 stop37h 15m
Wed 9/305:50 pm -
1 stop38h 51m
Deal found 8/22![Air Canada logo]()
$823
One-way flights from St. Louis to JapanSearch for one-way flight options from St. Louis to Japan. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
Search for one-way flight options from St. Louis to Japan. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:10 pm -
2 stops33h 00m
Deal found 8/21![Multiple Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm -
2 stops56h 06m
Deal found 8/21![Multiple Airlines logo]()
$453
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm -
3 stops36h 11m
Deal found 8/19![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:44 pm -
2 stops29h 21m
Deal found 8/22![Multiple Airlines logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:59 pm -
3 stops34h 11m
Deal found 8/22![Multiple Airlines logo]()
$514
This Thrive Travel deal was found by Cheapflights users on 8/19. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:35 am -
1 stop19h 25m
Deal found 8/19![Multiple Airlines logo]()
$523
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:59 pm -
2 stops51h 56m
Deal found 8/20![Multiple Airlines logo]()
$526
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:02 am -
1 stop21h 58m
Deal found 8/21![Multiple Airlines logo]()
$529
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:05 pm -
3 stops53h 50m
Deal found 8/18![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:59 pm -
2 stops34h 11m
Deal found 8/20![Multiple Airlines logo]()
$547
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:05 pm -
2 stops54h 00m
Deal found 8/18![Multiple Airlines logo]()
$548
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:16 pm -
2 stops40h 44m
Deal found 8/20![Multiple Airlines logo]()
$549
Find flight deals from St. Louis to Japan
Keep the following information in mind while searching for St. Louis to Japan flight deals. Data was last updated August 23, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $812 (Justfly.com) |
One-way from | $423 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,088 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Japan 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 August 23, 2026.
Use the filters below to find and compare flights from St. Louis to Japan 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
Tue 9/15
12:10 pm-4:25 pm
2 stops38h 15m
Osaka Kansai Intl
Tue 9/22
6:00 pm-6:41 pm
2 stops38h 41m
$826
St. LouisOsaka
STL Lambert-St Louis - ITM Osaka Itami
STLITM
Lambert-St Louis
Mon 9/7
8:55 am-6:40 pm
2 stops19h 45m
Osaka Itami
Mon 9/14
12:50 pm-8:20 pm
2 stops21h 30m
$968
St. LouisOsaka
STL Lambert-St Louis - ITM Osaka Itami
STLITM
Lambert-St Louis
Sun 2/14
4:05 pm-8:20 pm
2 stops37h 15m
Osaka Itami
Thu 2/18
2:30 pm-3:26 pm
2 stops39h 56m
$1,061
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
$1,064
St. LouisOsaka
STL Lambert-St Louis - ITM Osaka Itami
STLITM
Lambert-St Louis
Fri 9/11
8:55 am-6:10 pm
2 stops19h 15m
Osaka Itami
Mon 9/14
2:00 pm-8:20 pm
2 stops20h 20m
$1,088
St. LouisOsaka
STL Lambert-St Louis - ITM Osaka Itami
STLITM
Lambert-St Louis
Tue 9/15
8:30 am-6:55 pm
2 stops20h 25m
Osaka Itami
Tue 9/22
7:05 am-11:57 am
2 stops18h 52m
$1,098
St. LouisOkinawa
STL Lambert-St Louis - OKA Okinawa Naha
STLOKA
Lambert-St Louis
Wed 11/18
6:00 am-11:30 pm
2 stops26h 30m
Okinawa Naha
Thu 12/3
9:15 pm-2:26 pm
2 stops32h 11m
$1,105
St. LouisTokyo
STL Lambert-St Louis - HND Tokyo Haneda
STLHND
Lambert-St Louis
Mon 9/7
6:00 am-2:15 pm
1 stop18h 15m
Tokyo Haneda
Mon 9/14
4:05 pm-8:35 pm
2 stops18h 30m
$1,106
Quickest round-trip
St. LouisTokyo
STL Lambert-St Louis - NRT Tokyo Narita
STLNRT
Lambert-St Louis
Mon 2/1
6:15 am-3:30 pm
1 stop18h 15m
Tokyo Narita
Fri 2/12
6:00 pm-6:06 pm
1 stop15h 06m
$1,109
St. LouisTokyo
STL Lambert-St Louis - HND Tokyo Haneda
STLHND
Lambert-St Louis
Mon 2/1
1:08 pm-4:50 am
3 stops24h 42m
Tokyo Haneda
Wed 2/17
6:25 pm-8:59 pm
2 stops17h 34m
$1,113
Showing 1-10 of 54 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Japan
Have a flexible travel schedule? Discover the best time to fly to Japan from St. Louis with our price prediction graph.
STL-KIX
STL-ITM
STL-HND
STL-NRT
STL-TAK
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.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Japan
STL-JP0
STL-KIX
STL-ITM
STL-HND
STL-NRT
What is the cheapest month to book a flight from St. Louis to Japan?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Japan (average of $833). Flying from St. Louis to Japan in June is currently the most expensive (average of $1,403). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from St. Louis to Japan?
The price you pay for your flight from St. Louis to Japan may vary depending on when you book. For the best chance of a lower fare, look to book 35 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Japan
Get insights into the airlines that provide service to Japan. 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 Japan. Reviews last updated August 23, 2026.
Read through reviews of airlines operating flights from St. Louis to Japan, such as Japan Airlines,ANA, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Food
7.7
Boarding
8.4
Overall
8.3
Crew
8.7
Comfort
8.2
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Entertainment
7.8
Food
7.7
Boarding
8.4
Overall
8.3
Crew
8.7
Comfort
8.2
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Entertainment
7.8
Food
7.7
Boarding
8.4
Overall
8.3
Crew
8.7
Comfort
8.2
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Entertainment
7.8
Food
7.7
Boarding
8.4
Overall
8.3
Crew
8.7
Comfort
8.2
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Entertainment
7.8
Food
7.7
Boarding
8.4
Overall
8.3
Crew
8.7
Comfort
8.2
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Entertainment
7.8
Food
7.7
Boarding
8.4
Overall
8.3
Crew
8.7
Comfort
8.2
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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St. Louis and Japan flights
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Top 6 airlines flying from St. Louis to Japan
Discover the top 6 airlines that operate flights from St. Louis to Japan. 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 7,457,451 searches. Data last updated August 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$593 | Average$1,190 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$667 | Average$1,194 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$697 | Average$1,174 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$739 | Average$1,148 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$785 | Average$1,253 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$846 | Average$1,277 | FlexibilityNo cancel fee | On-time79% |