$400+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
May 18 — May 251
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Japan 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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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 April 18, 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 April 18, 2026.
This Air Canada deal was found by Cheapflights users on 4/14. 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 4/14![Air Canada logo]()
$947
This Air Canada deal was found by Cheapflights users on 4/13. 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 9/612:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Sat 9/126:00 pm
KIX
- STL
2 stops34h 00m
Air Canada
Deal found 4/13![Air Canada logo]()
$989
This Air Canada deal was found by Cheapflights users on 4/16. 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 9/2812:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Tue 10/66:00 pm
KIX
- STL
2 stops38h 41m
Air Canada
Deal found 4/16![Air Canada logo]()
$1,028
This Air Canada deal was found by Cheapflights users on 4/14. 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
STL
- NRT
1 stop37h 30m
Air Canada
Mon 9/145:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 4/14![Air Canada logo]()
$1,083
This Air Canada deal was found by Cheapflights users on 4/14. 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 9/228:55 am
STL
- NRT
1 stop16h 55m
Air Canada
Wed 10/75:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 4/14![Air Canada logo]()
$1,085
This Justfly.com deal was found by Cheapflights users on 4/13. 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.
Thu 4/164:05 pm
STL
- NRT
2 stops33h 20m
Air Canada
Tue 5/55:35 pm
NRT
- STL
2 stops40h 34m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,089
This Air Canada deal was found by Cheapflights users on 4/14. 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 9/68:55 am
STL
- HND
1 stop16h 45m
Air Canada
Sun 9/136:05 pm
HND
- STL
1 stop15h 55m
Air Canada
Deal found 4/14![Air Canada logo]()
$1,090
This FlightHub deal was found by Cheapflights users on 4/13. 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 9/212:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Wed 9/165:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,092
This FlightHub deal was found by Cheapflights users on 4/13. 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 9/228:55 am
STL
- HND
1 stop16h 45m
Multiple Airlines
Wed 10/71:40 pm
HND
- STL
2 stops20h 20m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,098
This FlightHub deal was found by Cheapflights users on 4/14. 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 9/88:55 am
STL
- NRT
2 stops40h 00m
Air Canada
Tue 9/155:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 4/14![Air Canada logo]()
$1,098
This Air Canada deal was found by Cheapflights users on 4/14. 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 10/1212:10 pm
STL
- NRT
1 stop37h 30m
Air Canada
Thu 10/225:25 pm
NRT
- STL
1 stop34h 35m
Air Canada
Deal found 4/14![Air Canada logo]()
$1,104
This Air Canada deal was found by Cheapflights users on 4/13. 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 4/274:05 pm
STL
- HND
1 stop33h 35m
Air Canada
Mon 5/46:05 pm
HND
- STL
1 stop16h 04m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,105
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 April 18, 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 April 18, 2026.
This Delta deal was found by Cheapflights users on 4/17. 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 9/2210:45 am
STL
- HND
1 stop15h 30m
Delta
Wed 10/74:35 pm
HND
- STL
1 stop18h 14m
Delta
Deal found 4/17![Delta logo]()
$1,153
This lol.travel deal was found by Cheapflights users on 4/15. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:54 am
STL
- ITM
2 stops21h 36m
Japan Airlines
Wed 5/139:25 am
ITM
- STL
2 stops18h 38m
Japan Airlines
Deal found 4/15![Japan Airlines logo]()
$1,235
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 8/55:10 am
STL
- KIX
2 stops19h 40m
United Airlines
Fri 8/144:55 pm
KIX
- STL
2 stops29h 42m
United Airlines
Deal found 4/15![United Airlines logo]()
$1,273
This ANA deal was found by Cheapflights users on 4/17. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:52 am
STL
- KIX
1 stop39h 58m
Multiple Airlines
Sun 9/64:55 pm
KIX
- STL
1 stop15h 29m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,321
This American Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 8/68:00 am
STL
- KIX
2 stops20h 45m
American Airlines
Fri 8/145:45 pm
KIX
- STL
1 stop19h 10m
American Airlines
Deal found 4/15![American Airlines logo]()
$1,323
This oojo deal was found by Cheapflights users on 4/17. 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 9/156:51 pm
STL
- KIX
3 stops29h 59m
Cathay Pacific
Tue 9/224:15 pm
KIX
- STL
3 stops43h 45m
Cathay Pacific
Deal found 4/17![Cathay Pacific logo]()
$1,452
This Air Canada deal was found by Cheapflights users on 4/16. 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 9/68:55 am
STL
- HIJ
2 stops20h 45m
Air Canada
Thu 9/1012:35 pm
HIJ
- STL
2 stops39h 25m
Air Canada
Deal found 4/16![Air Canada logo]()
$1,556
This Qatar Airways deal was found by Cheapflights users on 4/15. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:06 am
STL
- HND
2 stops46h 49m
Qatar Airways
Tue 6/210:50 pm
HND
- STL
2 stops39h 04m
Qatar Airways
Deal found 4/15![Qatar Airways logo]()
$1,626
This KAYAK deal was found by Cheapflights users on 4/14. 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.
Sun 5/317:23 pm
STL
- ITM
2 stops31h 42m
ANA
Fri 6/1912:50 pm
ITM
- STL
2 stops24h 45m
ANA
Deal found 4/14![ANA logo]()
$1,823
This Delta deal was found by Cheapflights users on 4/14. 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 9/86:30 am
STL
- HND
2 stops17h 50m
Delta
Wed 9/236:25 pm
HND
- STL
2 stops19h 12m
Delta
Deal found 4/14![Delta logo]()
$1,157
This United Airlines deal was found by Cheapflights users on 4/13. 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 9/85:10 am
STL
- HND
2 stops23h 50m
United Airlines
Thu 9/105:15 pm
HND
- STL
1 stop16h 16m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,297
This Japan Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 8/66:00 am
STL
- KIX
1 stop22h 45m
Multiple Airlines
Fri 8/145:45 pm
KIX
- STL
1 stop19h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,326
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Sat 8/294:40 pm
STL
- KIX
2 stops32h 10m
United Airlines
Sun 9/64:55 pm
KIX
- STL
1 stop15h 29m
United Airlines
Deal found 4/14![United Airlines logo]()
$1,298
This Delta deal was found by Cheapflights users on 4/17. 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 8/147:05 pm
STL
- HND
2 stops28h 00m
Delta
Thu 8/204:20 pm
HND
- STL
2 stops21h 17m
Delta
Deal found 4/17![Delta logo]()
$1,300
This ANA deal was found by Cheapflights users on 4/17. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:52 am
STL
- KIX
1 stop39h 58m
Multiple Airlines
Tue 9/224:55 pm
KIX
- STL
1 stop15h 29m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,350
This Japan Airlines deal was found by Cheapflights users on 4/13. 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.
Mon 8/316:00 am
STL
- TAK
2 stops23h 50m
Japan Airlines
Wed 9/28:30 pm
TAK
- STL
2 stops30h 36m
Japan Airlines
Deal found 4/13![Japan Airlines logo]()
$1,493
This United Airlines deal was found by Cheapflights users on 4/13. 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 9/68:00 am
STL
- HIJ
2 stops21h 40m
United Airlines
Thu 9/1012:35 pm
HIJ
- STL
2 stops24h 25m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,327
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
STL
- NRT
1 stop19h 00m
Multiple Airlines
Thu 5/216:00 pm
NRT
- STL
2 stops36h 37m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,436
This Qatar Airways deal was found by Cheapflights users on 4/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
STL
- NRT
2 stops47h 35m
Qatar Airways
Sun 6/710:25 pm
NRT
- STL
2 stops39h 29m
Qatar Airways
Deal found 4/13![Qatar Airways logo]()
$1,768
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Sat 5/94:15 pm
STL
- NRT
2 stops32h 45m
United Airlines
Fri 5/225:00 pm
NRT
- STL
1 stop31h 07m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,346
This Delta deal was found by Cheapflights users on 4/14. 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 5/66:00 am
STL
- HND
1 stop18h 20m
Delta
Wed 6/174:20 pm
HND
- STL
1 stop14h 32m
Delta
Deal found 4/14![Delta logo]()
$1,515
This Cathay Pacific deal was found by Cheapflights users on 4/17. 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 10/35:11 pm
STL
- HND
2 stops38h 24m
Multiple Airlines
Sun 10/1810:05 am
HND
- STL
2 stops27h 36m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,452
This KAYAK deal was found by Cheapflights users on 4/14. 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.
Fri 6/126:00 am
STL
- FUK
2 stops21h 35m
ANA
Sat 6/202:10 pm
FUK
- STL
2 stops23h 25m
ANA
Deal found 4/14![ANA logo]()
$1,983
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/16:30 am
STL
- NRT
2 stops18h 15m
United Airlines
Sun 5/104:45 pm
NRT
- STL
2 stops17h 58m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,395
This Bravofly deal was found by Cheapflights users on 4/13. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:36 am
STL
- ITM
2 stops20h 04m
Japan Airlines
Thu 6/42:35 pm
ITM
- STL
2 stops18h 10m
Japan Airlines
Deal found 4/13![Japan Airlines logo]()
$1,991
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/105:59 pm
STL
- NRT
2 stops31h 01m
United Airlines
Tue 6/25:00 pm
NRT
- STL
2 stops33h 42m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,455
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:02 am
STL
- ITM
2 stops23h 48m
Multiple Airlines
Fri 7/172:30 pm
ITM
- STL
2 stops23h 29m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,708
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 7/85:10 am
STL
- NRT
2 stops19h 00m
United Airlines
Wed 7/225:00 pm
NRT
- STL
2 stops29h 41m
United Airlines
Deal found 4/15![United Airlines logo]()
$1,455
This Japan Airlines deal was found by Cheapflights users on 4/14. 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.
Fri 5/298:36 am
STL
- ITM
2 stops20h 34m
Japan Airlines
Fri 6/52:35 pm
ITM
- STL
2 stops18h 10m
Japan Airlines
Deal found 4/14![Japan Airlines logo]()
$2,249
This Qatar Airways deal was found by Cheapflights users on 4/14. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:04 am
STL
- FUK
3 stops55h 46m
Qatar Airways
Fri 6/56:20 pm
FUK
- STL
3 stops42h 38m
Qatar Airways
Deal found 4/14![Qatar Airways logo]()
$2,501
Last-minute flights from St. Louis to JapanDiscover last-minute flight deals from St. Louis to Japan. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Japan. Data last updated April 18, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 4/13. 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.
Thu 4/164:05 pm
STL
- NRT
2 stops33h 20m
Air Canada
Tue 5/55:35 pm
NRT
- STL
2 stops40h 34m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,089
This FlightHub deal was found by Cheapflights users on 4/13. 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.
Sat 4/254:05 pm
STL
- NRT
2 stops33h 20m
Air Canada
Fri 5/85:35 pm
NRT
- STL
2 stops32h 31m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,121
This Air Canada deal was found by Cheapflights users on 4/16. 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 4/254:05 pm
STL
- HND
1 stop33h 35m
Air Canada
Fri 5/86:05 pm
HND
- STL
1 stop32h 01m
Air Canada
Deal found 4/16![Air Canada logo]()
$1,138
This Air Canada deal was found by Cheapflights users on 4/13. 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 4/274:05 pm
STL
- HND
1 stop33h 35m
Air Canada
Mon 5/46:05 pm
HND
- STL
1 stop16h 04m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,105
This Justfly.com deal was found by Cheapflights users on 4/13. 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 4/274:05 pm
STL
- NRT
2 stops32h 50m
Air Canada
Mon 5/45:25 pm
NRT
- STL
2 stops41h 00m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,172
This lol.travel deal was found by Cheapflights users on 4/15. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:54 am
STL
- ITM
2 stops21h 36m
Japan Airlines
Wed 5/139:25 am
ITM
- STL
2 stops18h 38m
Japan Airlines
Deal found 4/15![Japan Airlines logo]()
$1,235
This lastminute.com deal was found by Cheapflights users on 4/15. 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.
Mon 4/276:21 am
STL
- KIX
1 stop22h 24m
Japan Airlines
Wed 5/139:15 pm
KIX
- STL
2 stops28h 32m
Japan Airlines
Deal found 4/15![Japan Airlines logo]()
$1,243
This oojo deal was found by Cheapflights users on 4/13. 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.
Mon 4/277:05 am
STL
- HND
1 stop20h 25m
Japan Airlines
Mon 5/48:40 pm
HND
- STL
2 stops41h 17m
Japan Airlines
Deal found 4/13![Japan Airlines logo]()
$1,251
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/18:06 pm
STL
- NRT
2 stops33h 54m
Multiple Airlines
Sun 5/106:00 pm
NRT
- STL
1 stop19h 59m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,214
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Mon 5/44:46 pm
STL
- NRT
1 stop33h 14m
Multiple Airlines
Sat 5/164:25 pm
NRT
- STL
2 stops21h 29m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,252
This BusinessClass deal was found by Cheapflights users on 4/13. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:21 am
STL
- FUK
2 stops19h 44m
ANA
Wed 5/131:05 pm
FUK
- STL
2 stops19h 48m
ANA
Deal found 4/13![ANA logo]()
$1,282
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/98:08 pm
STL
- NRT
2 stops28h 42m
Multiple Airlines
Wed 6/102:35 pm
NRT
- STL
1 stop23h 21m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,248
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 April 18, 2026.
Search for one-way flight options from St. Louis to Japan. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Mon 5/49:55 pm
STL
- NRT
2 stops50h 55m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$400
This Trip.com deal was found by Cheapflights users on 4/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:17 pm
STL
- NRT
2 stops33h 43m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$409
This Trip.com deal was found by Cheapflights users on 4/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:55 pm
STL
- NRT
2 stops32h 05m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Mon 5/118:08 pm
STL
- NRT
2 stops28h 42m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 4/294:59 pm
STL
- NRT
2 stops55h 26m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/64:46 pm
STL
- NRT
2 stops32h 04m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$527
This FlightHub deal was found by Cheapflights users on 4/13. 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 4/264:05 pm
STL
- NRT
2 stops57h 20m
Air Canada
Deal found 4/13![Air Canada logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 7/73:33 pm
STL
- NRT
2 stops38h 27m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$589
This Air Canada deal was found by Cheapflights users on 4/13. 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 4/266:30 am
STL
- HND
2 stops19h 10m
Air Canada
Deal found 4/13![Air Canada logo]()
$625
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Mon 5/119:18 pm
STL
- KIX
3 stops45h 57m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$643
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/66:51 pm
STL
- HND
3 stops34h 09m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$659
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Sun 4/269:55 pm
STL
- HND
3 stops50h 00m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$676
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 April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $947 (Air Canada) |
One-way from | $400 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $999 |
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 2,558,603 searches. Data last updated April 18, 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. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Tue 9/22
10:45 am-4:15 pm
1 stop15h 30m
Tokyo Haneda
Wed 10/7
4:35 pm-8:49 pm
1 stop18h 14m
$1,153
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Tue 9/8
6:30 am-2:20 pm
2 stops17h 50m
Tokyo Haneda
Wed 9/23
6:25 pm-11:37 pm
2 stops19h 12m
$1,157
St. LouisOsaka
STL - ITM
STLITM
Lambert-St Louis
Mon 4/27
8:54 am-8:30 pm
2 stops21h 36m
Osaka Itami
Wed 5/13
9:25 am-2:03 pm
2 stops18h 38m
$1,235
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Wed 8/5
5:10 am-2:50 pm
2 stops19h 40m
Osaka Kansai Intl
Fri 8/14
4:55 pm-8:37 am
2 stops29h 42m
$1,273
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Tue 9/8
5:10 am-7:00 pm
2 stops23h 50m
Tokyo Haneda
Thu 9/10
5:15 pm-7:31 pm
1 stop16h 16m
$1,297
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sat 8/29
4:40 pm-2:50 pm
2 stops32h 10m
Osaka Kansai Intl
Sun 9/6
4:55 pm-6:24 pm
1 stop15h 29m
$1,298
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Fri 8/14
7:05 pm-1:05 pm
2 stops28h 00m
Tokyo Haneda
Thu 8/20
4:20 pm-11:37 pm
2 stops21h 17m
$1,300
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sat 8/29
8:52 am-2:50 pm
1 stop39h 58m
Osaka Kansai Intl
Sun 9/6
4:55 pm-6:24 pm
1 stop15h 29m
$1,321
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Thu 8/6
8:00 am-6:45 pm
2 stops20h 45m
Osaka Kansai Intl
Fri 8/14
5:45 pm-10:55 pm
1 stop19h 10m
$1,323
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Thu 8/6
6:00 am-6:45 pm
1 stop22h 45m
Osaka Kansai Intl
Fri 8/14
5:45 pm-10:55 pm
1 stop19h 10m
$1,326
Showing 1-10 of 56 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-NRT
STL-HND
STL-ITM
STL-KIX
STL-FUK
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-NRT
STL-HND
STL-ITM
STL-KIX
What is the cheapest month to book a flight from St. Louis to Japan?
Currently, March is the cheapest month in which you can book a flight from St. Louis to Japan (average of $349). Flying from St. Louis to Japan in January is currently the most expensive (average of $616). 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.
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 April 18, 2026.
Read through reviews of airlines operating flights from St. Louis to Japan, such as ANA,Japan Airlines, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.2
Food
7.8
Overall
8.4
Boarding
8.6
Entertainment
8.0
Crew
8.7
Reviews
1 / 20
8.0
ExcellentAlejandro,Apr 2026
SFO - HND
Comfort
8.2
Food
7.8
Overall
8.4
Boarding
8.6
Entertainment
8.0
Crew
8.7
Reviews
1 / 20
8.0
ExcellentAlejandro,Apr 2026
SFO - HND
Comfort
8.2
Food
7.8
Overall
8.4
Boarding
8.6
Entertainment
8.0
Crew
8.7
Reviews
1 / 20
8.0
ExcellentAlejandro,Apr 2026
SFO - HND
Comfort
8.2
Food
7.8
Overall
8.4
Boarding
8.6
Entertainment
8.0
Crew
8.7
Reviews
1 / 20
8.0
ExcellentAlejandro,Apr 2026
SFO - HND
Comfort
8.2
Food
7.8
Overall
8.4
Boarding
8.6
Entertainment
8.0
Crew
8.7
Reviews
1 / 20
8.0
ExcellentAlejandro,Apr 2026
SFO - HND
Comfort
8.2
Food
7.8
Overall
8.4
Boarding
8.6
Entertainment
8.0
Crew
8.7
Reviews
1 / 20
8.0
ExcellentAlejandro,Apr 2026
SFO - HND
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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Alternative routes for St. Louis to Japan
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Complete your trip
Complete your trip to Japan by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Japan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Japan flights
Browse other St. Louis and Japan flight options. Last updated on April 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Japan flights
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Fly to Japan regions
Consider these flights traveling to Japan regions.
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 2,558,603 searches. Data last updated April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$593 | Average$1,254 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$629 | Average$884 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$703 | Average$1,060 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$727 | Average$1,012 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$747 | Average$1,087 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$846 | Average$1,168 | FlexibilityNo cancel fee | On-time79% |