$431+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
Aug 7 — Aug 141
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 July 8, 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 July 8, 2026.
This Orbitz deal was found by Cheapflights users on 7/5. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:30 pm
STL
- NRT
2 stops31h 25m
Air Canada
Tue 9/295:50 pm
NRT
- STL
2 stops32h 23m
Air Canada
Deal found 7/5![Air Canada logo]()
$909
This Air Canada deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Mon 9/145:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 7/7![Air Canada logo]()
$911
This Air Canada deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 7/6![Air Canada logo]()
$914
This Air Canada deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Mon 9/285:50 pm
NRT
- STL
1 stop16h 30m
Air Canada
Deal found 7/7![Air Canada logo]()
$916
This Air Canada deal was found by Cheapflights users on 7/4. 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.
Sat 9/125:30 pm
STL
- KIX
2 stops32h 55m
Air Canada
Mon 9/216:00 pm
KIX
- STL
2 stops42h 00m
Air Canada
Deal found 7/4![Air Canada logo]()
$920
This Air Canada deal was found by Cheapflights users on 7/4. 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 9/142:40 pm
STL
- KIX
1 stop35h 45m
Air Canada
Mon 9/216:00 pm
KIX
- STL
2 stops42h 00m
Air Canada
Deal found 7/4![Air Canada logo]()
$923
This FlightHub deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:05 pm
STL
- NRT
2 stops57h 25m
Air Canada
Thu 11/126:45 pm
NRT
- STL
2 stops34h 45m
Air Canada
Deal found 7/7![Air Canada logo]()
$924
This Air Canada deal was found by Cheapflights users on 7/4. 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 9/145:30 pm
STL
- KIX
2 stops56h 55m
Air Canada
Thu 9/246:00 pm
KIX
- STL
2 stops41h 21m
Air Canada
Deal found 7/4![Air Canada logo]()
$925
This Justfly.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Wed 9/305:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 7/5![Air Canada logo]()
$927
This Air Canada deal was found by Cheapflights users on 7/4. 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.
Wed 9/1612:59 pm
STL
- KIX
2 stops37h 26m
Air Canada
Tue 9/226:00 pm
KIX
- STL
2 stops42h 59m
Air Canada
Deal found 7/4![Air Canada logo]()
$928
This Air Canada deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/64:05 pm
STL
- NRT
2 stops33h 25m
Air Canada
Mon 12/146:45 pm
NRT
- STL
2 stops35h 41m
Air Canada
Deal found 7/7![Air Canada logo]()
$930
This Air Canada deal was found by Cheapflights users on 7/4. 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 9/142:40 pm
STL
- KIX
1 stop35h 45m
Air Canada
Fri 9/256:00 pm
KIX
- STL
2 stops41h 21m
Air Canada
Deal found 7/4![Air Canada logo]()
$931
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 July 8, 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 July 8, 2026.
This Air Canada deal was found by Cheapflights users on 7/2. 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 9/1512:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Tue 9/226:00 pm
KIX
- STL
2 stops38h 41m
Air Canada
Deal found 7/2![Air Canada logo]()
$914
This FlightHub deal was found by Cheapflights users on 7/4. 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 9/158:55 am
STL
- ITM
2 stops19h 15m
Multiple Airlines
Tue 9/228:00 am
ITM
- STL
2 stops26h 20m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$1,045
This FlightHub deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:15 am
STL
- ITM
2 stops22h 55m
ANA
Tue 9/227:30 am
ITM
- STL
2 stops18h 27m
ANA
Deal found 7/6![ANA logo]()
$1,093
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
STL
- HND
2 stops20h 15m
Delta
Sun 9/134:05 pm
HND
- STL
2 stops21h 37m
Delta
Deal found 7/6![Delta logo]()
$1,125
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:08 am
STL
- HND
1 stop16h 47m
United Airlines
Fri 10/95:15 pm
HND
- STL
1 stop16h 26m
United Airlines
Deal found 7/7![United Airlines logo]()
$1,227
This oojo deal was found by Cheapflights users on 7/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:40 am
STL
- FUK
2 stops39h 40m
Cathay Pacific
Mon 11/304:30 pm
FUK
- STL
2 stops41h 57m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$1,252
This Air Canada deal was found by Cheapflights users on 7/4. 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.
Sun 10/1112:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Thu 10/297:25 pm
KIX
- STL
2 stops34h 01m
Air Canada
Deal found 7/4![Air Canada logo]()
$1,000
This FlightHub deal was found by Cheapflights users on 7/4. 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 9/148:00 am
STL
- ITM
2 stops20h 10m
ANA
Tue 9/228:00 am
ITM
- STL
2 stops17h 57m
ANA
Deal found 7/4![ANA logo]()
$1,093
This Japan Airlines deal was found by Cheapflights users on 7/5. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:27 am
STL
- TAK
2 stops22h 23m
Japan Airlines
Thu 9/179:45 am
TAK
- STL
2 stops21h 03m
Japan Airlines
Deal found 7/5![Japan Airlines logo]()
$2,199
This Delta deal was found by Cheapflights users on 7/4. 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 9/306:40 am
STL
- HND
1 stop19h 35m
Delta
Wed 10/74:20 pm
HND
- STL
2 stops22h 14m
Delta
Deal found 7/4![Delta logo]()
$1,131
This FlightHub deal was found by Cheapflights users on 7/2. 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 8/188:55 am
STL
- HND
2 stops21h 00m
Multiple Airlines
Thu 8/208:30 pm
HND
- STL
2 stops37h 54m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$1,142
This Air Canada deal was found by Cheapflights users on 7/2. 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 8/188:55 am
STL
- NRT
1 stop16h 55m
Air Canada
Thu 8/205:25 pm
NRT
- STL
1 stop16h 59m
Air Canada
Deal found 7/2![Air Canada logo]()
$1,069
This United Airlines deal was found by Cheapflights users on 7/2. 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.
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 7/2![United Airlines logo]()
$1,228
This CheapOair deal was found by Cheapflights users on 7/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:10 pm
STL
- ITM
2 stops40h 45m
Multiple Airlines
Fri 8/142:00 pm
ITM
- STL
2 stops20h 24m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$1,147
This Cathay Pacific deal was found by Cheapflights users on 7/3. 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.
Sun 9/66:00 am
STL
- NRT
2 stops42h 30m
Cathay Pacific
Sun 9/133:45 pm
NRT
- STL
3 stops45h 58m
Cathay Pacific
Deal found 7/3![Cathay Pacific logo]()
$1,307
This FlightHub deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:50 am
STL
- OKA
2 stops23h 55m
ANA
Sun 9/208:40 pm
OKA
- STL
2 stops29h 22m
ANA
Deal found 7/6![ANA logo]()
$1,212
This Delta deal was found by Cheapflights users on 7/4. 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 8/196:00 am
STL
- HND
2 stops20h 15m
Delta
Wed 8/264:35 pm
HND
- STL
2 stops22h 06m
Delta
Deal found 7/4![Delta logo]()
$1,215
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:00 am
STL
- KIX
2 stops40h 50m
United Airlines
Thu 10/296:35 pm
KIX
- STL
1 stop17h 35m
United Airlines
Deal found 7/7![United Airlines logo]()
$1,252
This Air Canada deal was found by Cheapflights users on 7/5. 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 10/138:55 am
STL
- ITM
2 stops19h 15m
Air Canada
Mon 10/192:00 pm
ITM
- STL
2 stops20h 00m
Air Canada
Deal found 7/5![Air Canada logo]()
$1,151
This Cathay Pacific deal was found by Cheapflights users on 7/4. 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.
Tue 9/156:30 am
STL
- KIX
3 stops42h 20m
Cathay Pacific
Mon 9/219:05 am
KIX
- STL
2 stops28h 38m
Cathay Pacific
Deal found 7/4![Cathay Pacific logo]()
$1,311
This Cathay Pacific deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:10 pm
STL
- FUK
2 stops27h 35m
Multiple Airlines
Wed 10/212:00 pm
FUK
- STL
2 stops45h 08m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$1,202
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 am
STL
- HND
2 stops20h 15m
Delta
Fri 10/166:25 pm
HND
- STL
2 stops19h 23m
Delta
Deal found 7/6![Delta logo]()
$1,237
This Air Canada deal was found by Cheapflights users on 7/2. 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 8/188:55 am
STL
- HND
1 stop16h 45m
Air Canada
Thu 8/206:05 pm
HND
- STL
1 stop16h 19m
Air Canada
Deal found 7/2![Air Canada logo]()
$1,168
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/199:06 am
STL
- NRT
1 stop15h 24m
United Airlines
Thu 7/305:25 pm
NRT
- STL
1 stop20h 19m
United Airlines
Deal found 7/6![United Airlines logo]()
$1,298
This Air Canada deal was found by Cheapflights users on 7/4. 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.
Sun 8/3012:10 pm
STL
- OKA
2 stops44h 00m
Multiple Airlines
Sun 9/612:15 pm
OKA
- STL
2 stops44h 27m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$1,209
This KAYAK deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:10 pm
STL
- KIX
3 stops29h 40m
Cathay Pacific
Thu 10/2910:00 am
KIX
- STL
2 stops25h 59m
Cathay Pacific
Deal found 7/7![Cathay Pacific logo]()
$1,346
This Justfly.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:30 am
STL
- ITM
2 stops19h 25m
ANA
Fri 8/143:00 pm
ITM
- STL
2 stops34h 57m
ANA
Deal found 7/6![ANA logo]()
$1,392
This United Airlines deal was found by Cheapflights users on 7/5. 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 7/225:10 am
STL
- NRT
1 stop19h 20m
United Airlines
Thu 7/305:25 pm
NRT
- STL
1 stop20h 19m
United Airlines
Deal found 7/5![United Airlines logo]()
$1,298
This Cathay Pacific deal was found by Cheapflights users on 7/3. 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.
Tue 10/207:10 pm
STL
- KIX
3 stops29h 40m
Multiple Airlines
Wed 10/289:25 am
KIX
- STL
2 stops26h 34m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,224
This FlightHub deal was found by Cheapflights users on 7/5. 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.
Wed 10/148:55 am
STL
- ITM
2 stops19h 15m
Air Canada
Mon 10/192:00 pm
ITM
- STL
2 stops20h 00m
Air Canada
Deal found 7/5![Air Canada logo]()
$1,251
Last-minute flights from St. Louis to JapanDiscover last-minute flight deals from St. Louis to Japan. Data last updated July 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Japan. Data last updated July 8, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 7/5. 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 8/412:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Tue 8/116:00 pm
KIX
- STL
2 stops34h 04m
Air Canada
Deal found 7/5![Air Canada logo]()
$1,068
This Air Canada deal was found by Cheapflights users on 7/3. 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.
Wed 8/52:40 pm
STL
- KIX
1 stop35h 45m
Air Canada
Fri 8/146:00 pm
KIX
- STL
1 stop34h 04m
Air Canada
Deal found 7/3![Air Canada logo]()
$1,072
This Air Canada deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Wed 8/265:35 pm
NRT
- STL
1 stop39h 07m
Air Canada
Deal found 7/6![Air Canada logo]()
$1,060
This Gotogate deal was found by Cheapflights users on 7/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Tue 9/85:50 pm
NRT
- STL
1 stop38h 51m
Air Canada
Deal found 7/3![Air Canada logo]()
$938
This Gotogate deal was found by Cheapflights users on 7/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:55 am
STL
- HND
1 stop16h 45m
Air Canada
Tue 9/86:05 pm
HND
- STL
1 stop16h 15m
Air Canada
Deal found 7/3![Air Canada logo]()
$1,047
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:00 am
STL
- HND
1 stop18h 15m
Delta
Tue 9/86:25 pm
HND
- STL
2 stops19h 17m
Delta
Deal found 7/3![Delta logo]()
$1,120
This Air Canada deal was found by Cheapflights users on 7/4. 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 8/2412:10 pm
STL
- KIX
2 stops38h 15m
Air Canada
Thu 8/276:00 pm
KIX
- STL
2 stops38h 42m
Air Canada
Deal found 7/4![Air Canada logo]()
$1,071
This Air Canada deal was found by Cheapflights users on 7/3. 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 8/2512:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Tue 9/15:35 pm
NRT
- STL
1 stop39h 07m
Air Canada
Deal found 7/3![Air Canada logo]()
$942
This American Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:42 am
STL
- HND
1 stop18h 38m
American Airlines
Tue 9/14:30 pm
HND
- STL
1 stop17h 56m
American Airlines
Deal found 7/6![American Airlines logo]()
$1,114
This Air Canada deal was found by Cheapflights users on 7/4. 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.
Wed 8/2612:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Wed 9/95:50 pm
NRT
- STL
2 stops32h 07m
Air Canada
Deal found 7/4![Air Canada logo]()
$944
This Justfly.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Tue 9/154:50 pm
NRT
- STL
2 stops35h 10m
Air Canada
Deal found 7/5![Air Canada logo]()
$974
This FlightHub deal was found by Cheapflights users on 7/5. 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.
Sun 8/302:40 pm
STL
- HND
1 stop35h 00m
Air Canada
Tue 9/156:05 pm
HND
- STL
1 stop16h 15m
Air Canada
Deal found 7/5![Air Canada logo]()
$1,078
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 July 8, 2026.
Search for one-way flight options from St. Louis to Japan. Find affordable one-way fares based on user searches. Data last updated July 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:34 pm
STL
- NRT
2 stops29h 51m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$431
This Air Canada deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:10 pm
STL
- NRT
1 stop37h 15m
Air Canada
Deal found 7/6![Air Canada logo]()
$458
This Expedia deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:55 am
STL
- KIX
1 stop17h 30m
Air Canada
Deal found 7/7![Air Canada logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:08 pm
STL
- NRT
2 stops33h 02m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Tue 7/216:34 pm
STL
- NRT
2 stops29h 51m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$482
This Mytrip deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:55 am
STL
- HND
2 stops23h 25m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 7/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:03 pm
STL
- NRT
2 stops34h 27m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$496
This Orbitz deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:55 am
STL
- HND
1 stop16h 45m
Air Canada
Deal found 7/7![Air Canada logo]()
$513
This Kiwi.com deal was found by Cheapflights users on 7/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:08 pm
STL
- NRT
2 stops33h 02m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$515
This Kiwi.com deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:34 pm
STL
- KIX
3 stops48h 41m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$525
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Sun 9/1310:35 am
STL
- NRT
2 stops38h 50m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$537
This CheapOair deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:10 pm
STL
- HND
2 stops37h 30m
Air Canada
Deal found 7/6![Air Canada logo]()
$546
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 July 8, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $909 (Orbitz) |
One-way from | $431 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,278 |
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 July 8, 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 9/15
12:10 pm-4:25 pm
2 stops38h 15m
Osaka Kansai Intl
Tue 9/22
6:00 pm-6:41 pm
2 stops38h 41m
$914
St. LouisOsaka
STL - KIX
STLKIX
Lambert-St Louis
Sun 10/11
12:10 pm-4:25 pm
2 stops38h 15m
Osaka Kansai Intl
Thu 10/29
7:25 pm-3:26 pm
2 stops34h 01m
$1,000
St. LouisOsaka
STL - ITM
STLITM
Lambert-St Louis
Tue 9/15
8:55 am-6:10 pm
2 stops19h 15m
Osaka Itami
Tue 9/22
8:00 am-8:20 pm
2 stops26h 20m
$1,045
St. LouisTokyo
STL - NRT
STLNRT
Lambert-St Louis
Tue 8/18
8:55 am-3:50 pm
1 stop16h 55m
Tokyo Narita
Thu 8/20
5:25 pm-8:24 pm
1 stop16h 59m
$1,069
St. LouisOsaka
STL - ITM
STLITM
Lambert-St Louis
Tue 9/15
6:15 am-7:10 pm
2 stops22h 55m
Osaka Itami
Tue 9/22
7:30 am-11:57 am
2 stops18h 27m
$1,093
St. LouisOsaka
STL - ITM
STLITM
Lambert-St Louis
Mon 9/14
8:00 am-6:10 pm
2 stops20h 10m
Osaka Itami
Tue 9/22
8:00 am-11:57 am
2 stops17h 57m
$1,093
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-11:42 pm
2 stops21h 37m
$1,125
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Wed 9/30
6:40 am-4:15 pm
1 stop19h 35m
Tokyo Haneda
Wed 10/7
4:20 pm-12:34 am
2 stops22h 14m
$1,131
St. LouisTokyo
STL - HND
STLHND
Lambert-St Louis
Tue 8/18
8:55 am-7:55 pm
2 stops21h 00m
Tokyo Haneda
Thu 8/20
8:30 pm-8:24 pm
2 stops37h 54m
$1,142
St. LouisOsaka
STL - ITM
STLITM
Lambert-St Louis
Wed 8/5
12:10 pm-6:55 pm
2 stops40h 45m
Osaka Itami
Fri 8/14
2:00 pm-8:24 pm
2 stops20h 24m
$1,147
Showing 1-10 of 53 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-HND
STL-NRT
STL-ITM
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-KIX
STL-HND
STL-NRT
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 July is currently the most expensive (average of $812). 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 July 8, 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
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
HNL - KIX
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
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.
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 July 8, 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 July 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$593 | Average$1,186 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$667 | Average$1,194 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$739 | Average$1,087 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$759 | Average$1,151 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$785 | Average$1,158 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$846 | Average$1,237 | FlexibilityNo cancel fee | On-time79% |