$458+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
Jul 5 — Jul 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Japan
Cheapest
Best
Last-minute
One-way
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 June 5, 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 June 5, 2026.
This Air Canada deal was found by Cheapflights users on 6/2. 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 9/112:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Mon 9/75:35 pm
NRT
- STL
2 stops32h 22m
Air Canada
Deal found 6/2![Air Canada logo]()
$957
This Air Canada deal was found by Cheapflights users on 6/5. 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 9/712:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Tue 9/155:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 6/5![Air Canada logo]()
$960
This FlightHub deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:10 pm
STL
- NRT
2 stops36h 45m
Air Canada
Mon 9/285:25 pm
NRT
- STL
2 stops32h 48m
Air Canada
Deal found 6/4![Air Canada logo]()
$962
This Air Canada deal was found by Cheapflights users on 6/3. 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 6/3![Air Canada logo]()
$963
This Expedia deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:40 pm
STL
- NRT
2 stops34h 15m
Air Canada
Wed 12/96:45 pm
NRT
- STL
2 stops32h 35m
Air Canada
Deal found 6/4![Air Canada logo]()
$967
This Air Canada deal was found by Cheapflights users on 6/5. 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 9/712:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Mon 9/285:50 pm
NRT
- STL
2 stops34h 10m
Air Canada
Deal found 6/5![Air Canada logo]()
$968
This Air Canada deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:55 am
STL
- NRT
1 stop16h 55m
Air Canada
Mon 9/145:25 pm
NRT
- STL
1 stop34h 35m
Air Canada
Deal found 6/4![Air Canada logo]()
$970
This Air Canada deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm
STL
- NRT
2 stops34h 15m
Air Canada
Wed 10/75:50 pm
NRT
- STL
2 stops34h 10m
Air Canada
Deal found 6/4![Air Canada logo]()
$973
This FlightHub deal was found by Cheapflights users on 6/1. 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 10/58:55 am
STL
- NRT
2 stops40h 30m
Air Canada
Mon 10/194:50 pm
NRT
- STL
2 stops39h 51m
Air Canada
Deal found 6/1![Air Canada logo]()
$979
This FlightHub deal was found by Cheapflights users on 6/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:55 am
STL
- HND
2 stops35h 40m
Multiple Airlines
Wed 10/71:40 pm
HND
- STL
2 stops20h 20m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$995
This FlightHub deal was found by Cheapflights users on 6/2. 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 9/12:40 pm
STL
- KIX
2 stops35h 45m
Air Canada
Mon 9/76:00 pm
KIX
- STL
2 stops40h 00m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,013
This Air Canada deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:00 am
STL
- KIX
2 stops42h 25m
Air Canada
Wed 9/166:00 pm
KIX
- STL
2 stops38h 41m
Air Canada
Deal found 6/3![Air Canada logo]()
$1,023
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 June 5, 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 June 5, 2026.
This FlightHub deal was found by Cheapflights users on 6/2. 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 9/12:40 pm
STL
- KIX
2 stops35h 45m
Air Canada
Mon 9/76:00 pm
KIX
- STL
2 stops40h 00m
Air Canada
Deal found 6/2![Air Canada logo]()
$1,013
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:32 pm
STL
- HND
2 stops33h 28m
Delta
Wed 11/185:15 pm
HND
- STL
1 stop14h 39m
Delta
Deal found 6/4![Delta logo]()
$1,093
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/246:54 pm
STL
- KIX
2 stops29h 56m
United Airlines
Fri 8/284:55 pm
KIX
- STL
1 stop15h 44m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,096
This American Airlines deal was found by Cheapflights users on 6/3. 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 8/306:00 am
STL
- OKA
2 stops26h 30m
American Airlines
Sun 9/610:50 am
OKA
- STL
2 stops21h 23m
American Airlines
Deal found 6/3![American Airlines logo]()
$1,146
This Cathay Pacific deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:00 am
STL
- NRT
2 stops42h 30m
Multiple Airlines
Mon 8/249:25 am
NRT
- STL
2 stops28h 17m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,247
This Justfly.com deal was found by Cheapflights users on 6/3. 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 9/38:50 am
STL
- OKA
2 stops20h 35m
ANA
Sun 9/2012:35 pm
OKA
- STL
2 stops20h 52m
ANA
Deal found 6/3![ANA logo]()
$1,262
This Cathay Pacific deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
STL
- NRT
2 stops43h 55m
Cathay Pacific
Sun 9/136:30 pm
NRT
- STL
2 stops43h 13m
Cathay Pacific
Deal found 6/1![Cathay Pacific logo]()
$1,291
This Japan Airlines deal was found by Cheapflights users on 6/2. 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.
Tue 8/256:00 am
STL
- ITM
2 stops36h 30m
Japan Airlines
Fri 8/287:25 am
ITM
- STL
2 stops29h 34m
Japan Airlines
Deal found 6/2![Japan Airlines logo]()
$1,345
This Qatar Airways deal was found by Cheapflights users on 6/2. 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.
Tue 9/16:00 am
STL
- FUK
3 stops60h 50m
Qatar Airways
Mon 9/77:10 pm
FUK
- STL
3 stops41h 30m
Qatar Airways
Deal found 6/2![Qatar Airways logo]()
$1,901
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:29 am
STL
- HND
1 stop15h 46m
Delta
Thu 12/104:25 pm
HND
- STL
1 stop19h 24m
Delta
Deal found 6/4![Delta logo]()
$1,173
This United Airlines deal was found by Cheapflights users on 6/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am
STL
- HND
1 stop23h 15m
United Airlines
Sat 10/316:25 pm
HND
- STL
1 stop19h 00m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,223
This American Airlines deal was found by Cheapflights users on 6/1. 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.
Wed 8/58:36 am
STL
- ITM
2 stops21h 14m
American Airlines
Fri 8/148:20 am
ITM
- STL
2 stops22h 04m
American Airlines
Deal found 6/1![American Airlines logo]()
$1,257
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
STL
- HND
2 stops20h 15m
Delta
Wed 12/95:35 pm
HND
- STL
2 stops21h 04m
Delta
Deal found 6/4![Delta logo]()
$1,178
This Alaska Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:36 pm
STL
- NRT
1 stop30h 24m
Multiple Airlines
Mon 11/166:25 pm
NRT
- STL
1 stop20h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,298
This Cathay Pacific deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:00 am
STL
- NRT
2 stops41h 40m
Cathay Pacific
Mon 8/243:45 pm
NRT
- STL
3 stops45h 57m
Cathay Pacific
Deal found 6/4![Cathay Pacific logo]()
$1,307
This KAYAK deal was found by Cheapflights users on 6/2. 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.
Tue 9/18:50 am
STL
- ITM
2 stops19h 20m
ANA
Mon 9/78:20 pm
ITM
- STL
2 stops29h 37m
ANA
Deal found 6/2![ANA logo]()
$1,365
This KAYAK deal was found by Cheapflights users on 6/3. 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.
Mon 7/206:37 am
STL
- KIX
1 stop22h 08m
Japan Airlines
Mon 7/277:50 pm
KIX
- STL
2 stops31h 01m
Japan Airlines
Deal found 6/3![Japan Airlines logo]()
$1,407
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Thu 9/36:00 am
STL
- OKA
2 stops23h 25m
United Airlines
Sun 9/2012:35 pm
OKA
- STL
2 stops23h 01m
United Airlines
Deal found 6/1![United Airlines logo]()
$1,281
This American Airlines deal was found by Cheapflights users on 6/2. 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 9/36:36 am
STL
- OKA
2 stops21h 49m
American Airlines
Sun 9/2011:40 am
OKA
- STL
2 stops24h 17m
American Airlines
Deal found 6/2![American Airlines logo]()
$1,281
This Cathay Pacific deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:51 pm
STL
- HND
2 stops29h 04m
Multiple Airlines
Wed 11/44:00 pm
HND
- STL
2 stops45h 29m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,323
This Air Canada deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/712:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Tue 7/216:00 pm
KIX
- STL
2 stops34h 02m
Air Canada
Deal found 6/4![Air Canada logo]()
$1,478
This Delta deal was found by Cheapflights users on 6/1. 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
STL
- HND
2 stops20h 15m
Delta
Sun 9/134:05 pm
HND
- STL
2 stops18h 45m
Delta
Deal found 6/1![Delta logo]()
$1,228
This KAYAK deal was found by Cheapflights users on 6/1. 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.
Tue 9/19:32 am
STL
- KIX
2 stops39h 38m
Cathay Pacific
Mon 11/309:25 am
KIX
- STL
2 stops40h 48m
Cathay Pacific
Deal found 6/1![Cathay Pacific logo]()
$1,361
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:25 am
STL
- FUK
2 stops44h 05m
United Airlines
Wed 8/2612:15 pm
FUK
- STL
3 stops41h 23m
United Airlines
Deal found 6/4![United Airlines logo]()
$1,289
This KAYAK deal was found by Cheapflights users on 6/3. 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.
Mon 7/208:38 am
STL
- ITM
2 stops21h 12m
Japan Airlines
Mon 7/272:30 pm
ITM
- STL
2 stops32h 39m
Japan Airlines
Deal found 6/3![Japan Airlines logo]()
$1,430
This KAYAK deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:20 am
STL
- ITM
2 stops20h 50m
ANA
Mon 7/2712:50 pm
ITM
- STL
2 stops19h 27m
ANA
Deal found 6/4![ANA logo]()
$1,475
This Air Canada deal was found by Cheapflights users on 6/1. 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.
Wed 8/52:40 pm
STL
- KIX
1 stop35h 45m
Air Canada
Fri 8/146:00 pm
KIX
- STL
1 stop34h 02m
Air Canada
Deal found 6/1![Air Canada logo]()
$1,483
This Cathay Pacific deal was found by Cheapflights users on 6/3. 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
STL
- HND
2 stops44h 34m
Cathay Pacific
Thu 10/159:55 am
HND
- STL
2 stops26h 05m
Cathay Pacific
Deal found 6/3![Cathay Pacific logo]()
$1,368
This United Airlines deal was found by Cheapflights users on 6/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:01 am
STL
- NRT
1 stop18h 29m
United Airlines
Thu 7/305:25 pm
NRT
- STL
1 stop20h 19m
United Airlines
Deal found 6/5![United Airlines logo]()
$1,296
This American Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:08 am
STL
- ITM
2 stops21h 12m
American Airlines
Tue 7/218:20 am
ITM
- STL
2 stops22h 20m
American Airlines
Deal found 6/4![American Airlines logo]()
$1,513
Last-minute flights from St. Louis to JapanDiscover last-minute flight deals from St. Louis to Japan. Data last updated June 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Japan. Data last updated June 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/195:10 am
STL
- HND
2 stops18h 45m
United Airlines
Tue 8/1812:30 am
HND
- STL
2 stops30h 04m
United Airlines
Deal found 6/1![United Airlines logo]()
$1,092
This FlightHub deal was found by Cheapflights users on 6/1. 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 7/199:20 am
STL
- HND
1 stop16h 05m
ANA
Wed 8/195:15 pm
HND
- STL
1 stop32h 47m
ANA
Deal found 6/1![ANA logo]()
$1,263
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/199:20 am
STL
- HND
1 stop16h 05m
United Airlines
Thu 7/305:45 pm
HND
- STL
1 stop19h 59m
United Airlines
Deal found 6/1![United Airlines logo]()
$1,264
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/197:05 pm
STL
- NRT
2 stops29h 05m
United Airlines
Thu 7/305:25 pm
NRT
- STL
1 stop20h 19m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,270
This American Airlines deal was found by Cheapflights users on 6/5. 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 7/206:37 am
STL
- HND
1 stop19h 13m
American Airlines
Fri 7/247:45 pm
HND
- STL
1 stop18h 14m
American Airlines
Deal found 6/5![American Airlines logo]()
$1,247
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/205:10 am
STL
- HND
2 stops23h 50m
United Airlines
Thu 7/305:45 pm
HND
- STL
1 stop19h 59m
United Airlines
Deal found 6/1![United Airlines logo]()
$1,260
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/206:01 am
STL
- NRT
1 stop18h 29m
United Airlines
Thu 7/305:25 pm
NRT
- STL
1 stop20h 19m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,265
This American Airlines deal was found by Cheapflights users on 5/31. 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.
Tue 7/218:38 am
STL
- NRT
1 stop16h 22m
American Airlines
Tue 8/46:55 pm
NRT
- STL
2 stops19h 21m
American Airlines
Deal found 5/31![American Airlines logo]()
$1,248
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:45 pm
STL
- NRT
2 stops31h 25m
United Airlines
Sun 8/25:25 pm
NRT
- STL
1 stop20h 19m
United Airlines
Deal found 6/4![United Airlines logo]()
$1,193
This American Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:55 am
STL
- HND
2 stops18h 55m
American Airlines
Wed 8/121:00 pm
HND
- STL
1 stop17h 24m
American Airlines
Deal found 6/4![American Airlines logo]()
$1,236
This American Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:07 am
STL
- NRT
2 stops19h 23m
American Airlines
Wed 8/126:30 pm
NRT
- STL
1 stop15h 56m
American Airlines
Deal found 6/4![American Airlines logo]()
$1,237
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:14 am
STL
- NRT
1 stop17h 46m
United Airlines
Wed 8/125:25 pm
NRT
- STL
1 stop20h 13m
United Airlines
Deal found 6/4![United Airlines logo]()
$1,254
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 June 5, 2026.
Search for one-way flight options from St. Louis to Japan. Find affordable one-way fares based on user searches. Data last updated June 5, 2026.
This Air Canada deal was found by Cheapflights users on 6/5. 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.
Tue 7/712:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Deal found 6/5![Air Canada logo]()
$458
This Air Canada deal was found by Cheapflights users on 6/5. 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.
Tue 7/216:00 am
STL
- NRT
2 stops19h 25m
Air Canada
Deal found 6/5![Air Canada logo]()
$473
This FlightHub deal was found by Cheapflights users on 6/3. 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 8/39:20 am
STL
- OKA
2 stops23h 55m
ANA
Deal found 6/3![ANA logo]()
$520
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/285:10 am
STL
- HND
2 stops23h 50m
United Airlines
Deal found 6/2![United Airlines logo]()
$520
This FlightHub deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:20 am
STL
- HND
1 stop16h 05m
ANA
Deal found 6/4![ANA logo]()
$521
This FlightHub deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:14 am
STL
- NRT
1 stop17h 46m
ANA
Deal found 6/4![ANA logo]()
$521
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/215:10 am
STL
- HND
2 stops19h 55m
United Airlines
Deal found 6/2![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/216:00 am
STL
- NRT
2 stops18h 30m
United Airlines
Deal found 6/2![United Airlines logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 8/38:08 pm
STL
- OKA
3 stops33h 07m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$535
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:42 pm
STL
- HND
1 stop29h 23m
Delta
Deal found 6/1![Delta logo]()
$535
This United Airlines deal was found by Cheapflights users on 6/1. 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 8/151:36 pm
STL
- NRT
1 stop34h 54m
United Airlines
Deal found 6/1![United Airlines logo]()
$536
This FlightHub deal was found by Cheapflights users on 6/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:40 pm
STL
- ITM
2 stops38h 15m
Air Canada
Deal found 6/5![Air Canada logo]()
$542
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 June 5, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $957 (Air Canada) |
One-way from | $458 (Air Canada) |
Popular in | June |
Cheapest in | February |
Average price | $1,313 |
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 June 5, 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 - KIX
STLKIX
Lambert-St Louis
Tue 9/1
2:40 pm-4:25 pm
2 stops35h 45m
Osaka Kansai Intl
Mon 9/7
6:00 pm-8:00 pm
2 stops40h 00m
$1,013
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Mon 8/24
2:32 pm-2:00 pm
2 stops33h 28m
Tokyo Haneda
Wed 11/18
5:15 pm-4:54 pm
1 stop14h 39m
$1,093
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Mon 8/24
6:54 pm-2:50 pm
2 stops29h 56m
Osaka Kansai Intl
Fri 8/28
4:55 pm-6:39 pm
1 stop15h 44m
$1,096
St. LouisOkinawa
STL - OKA
STLOKA
Lambert-St Louis
Sun 8/30
6:00 am-10:30 pm
2 stops26h 30m
Okinawa Naha
Sun 9/6
10:50 am-6:13 pm
2 stops21h 23m
$1,146
Quickest round-trip
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Wed 9/16
10:29 am-4:15 pm
1 stop15h 46m
Tokyo Haneda
Thu 12/10
4:25 pm-8:49 pm
1 stop19h 24m
$1,173
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Wed 9/16
6:00 am-4:15 pm
2 stops20h 15m
Tokyo Haneda
Wed 12/9
5:35 pm-11:39 pm
2 stops21h 04m
$1,178
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Wed 9/30
8:00 am-9:15 pm
1 stop23h 15m
Tokyo Haneda
Sat 10/31
6:25 pm-11:25 pm
1 stop19h 00m
$1,223
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Sun 9/6
6:00 am-4:15 pm
2 stops20h 15m
Tokyo Haneda
Sun 9/13
4:05 pm-8:50 pm
2 stops18h 45m
$1,228
St. LouisTokyo
STL - NRT
STLNRT
Lambert-St Louis
Sun 8/16
6:00 am-2:30 pm
2 stops42h 30m
Tokyo Narita
Mon 8/24
9:25 am-11:42 pm
2 stops28h 17m
$1,247
St. LouisOsaka
STL - ITM
STLITM
Lambert-St Louis
Wed 8/5
8:36 am-7:50 pm
2 stops21h 14m
Osaka Itami
Fri 8/14
8:20 am-4:24 pm
2 stops22h 04m
$1,257
Showing 1-10 of 58 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-OKA
STL-HND
STL-ITM
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.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Japan
STL-JP0
STL-NRT
STL-OKA
STL-HND
STL-ITM
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.
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 4 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 June 5, 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.
Boarding
8.4
Entertainment
7.8
Comfort
8.2
Overall
8.3
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
Boarding
8.4
Entertainment
7.8
Comfort
8.2
Overall
8.3
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
Boarding
8.4
Entertainment
7.8
Comfort
8.2
Overall
8.3
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
Boarding
8.4
Entertainment
7.8
Comfort
8.2
Overall
8.3
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
Boarding
8.4
Entertainment
7.8
Comfort
8.2
Overall
8.3
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Nov 2025
BKK - NRT
Boarding
8.4
Entertainment
7.8
Comfort
8.2
Overall
8.3
Crew
8.7
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 Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
Alternative routes for St. Louis to Japan
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Japan by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Japan by cabin class
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 June 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Japan flights
Consider these flights traveling from St. Louis to Japan.
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 June 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$593 | Average$1,161 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$629 | Average$1,114 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$708 | Average$1,087 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$739 | Average$1,024 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$777 | Average$1,140 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$813 | Average$1,172 | FlexibilityNo cancel fee | On-time79% |