HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Japan

$345+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
ago. 18 — ago. 251
lun. 8/18
lun. 8/25
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

Keep the following information in mind while searching for St. Louis to Japan flight deals. Data was last updated agosto 13, 2025.

Round-trip from

$641
(Air Canada)

One-way from

$345
(Orbitz)

Popular in

June

Cheapest in

September

Average price

$833
From Lambert-St Louis to Japan
Search Deals
One-way flight from Lambert-St Louis to Japan
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from St. Louis to Japan

Cheapest flights from St. Louis to Japan
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 agosto 13, 2025.

This Air Canada deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
lun. 11/246:43 pmSTL - NRT
2 stops30h 47mAir Canada
lun. 12/86:45 pmNRT - STL
2 stops34h 40mAir Canada
Deal found 8/12$641
This Travelocity deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/255:30 pmSTL - HND
2 stops32h 10mAir Canada
mar. 12/96:50 pmHND - STL
2 stops34h 35mAir Canada
Deal found 8/12$643
This Air Canada deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
mar. 11/254:05 pmSTL - NRT
2 stops33h 25mAir Canada
mar. 12/96:45 pmNRT - STL
2 stops34h 40mAir Canada
Deal found 8/12$643
This Air Canada deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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.
vie. 10/244:05 pmSTL - NRT
1 stop33h 35mAir Canada
sáb. 11/86:45 pmNRT - STL
2 stops34h 40mAir Canada
Deal found 8/11$644
This Air Canada deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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.
mar. 10/215:28 pmSTL - NRT
2 stops31h 57mAir Canada
lun. 10/276:45 pmNRT - STL
2 stops33h 40mAir Canada
Deal found 8/11$647
This Air Canada deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/209:15 amSTL - HND
1 stop16h 35mAir Canada
jue. 10/236:10 pmHND - STL
2 stops30h 39mAir Canada
Deal found 8/10$648
This Orbitz deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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.
mar. 10/219:15 amSTL - HND
1 stop16h 35mAir Canada
lun. 10/276:50 pmHND - STL
2 stops33h 35mAir Canada
Deal found 8/11$649
This Air Canada deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/204:05 pmSTL - NRT
1 stop33h 35mAir Canada
jue. 10/234:55 pmNRT - STL
2 stops31h 54mAir Canada
Deal found 8/10$650
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
mié. 10/294:05 pmSTL - NRT
1 stop34h 25mAir Canada
lun. 11/106:45 pmNRT - STL
2 stops36h 02mAir Canada
Deal found 8/12$654
This Expedia deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
lun. 11/246:43 pmSTL - HND
2 stops30h 57mAir Canada
lun. 12/86:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 8/12$655
This Air Canada deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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.
sáb. 12/66:42 pmSTL - NRT
2 stops30h 48mAir Canada
sáb. 12/136:45 pmNRT - STL
2 stops34h 40mAir Canada
Deal found 8/11$655
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” 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.
vie. 11/2810:00 amSTL - NRT
2 stops39h 20mAir Canada
vie. 12/126:45 pmNRT - STL
2 stops32h 30mAir Canada
Deal found 8/12$659

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 agosto 13, 2025.
Use the filters below to find and compare flights from St. Louis to Japan that are best for you.

Fly from

St. Louis

Fly to

Japan

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

mar. 10/21

9:15 am-3:40 pm

1 stop16h 25m

Tokyo Narita

lun. 10/27

6:45 pm-2:25 pm

2 stops33h 40m

$643

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

vie. 10/24

4:05 pm-3:40 pm

1 stop33h 35m

Tokyo Narita

sáb. 11/8

6:45 pm-2:25 pm

2 stops34h 40m

$644

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

lun. 10/20

9:15 am-3:50 pm

1 stop16h 35m

Tokyo Haneda

jue. 10/23

6:10 pm-10:49 am

2 stops30h 39m

$648

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

mar. 10/21

9:15 am-3:50 pm

1 stop16h 35m

Tokyo Haneda

lun. 10/27

6:50 pm-2:25 pm

2 stops33h 35m

$649

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

lun. 10/20

4:05 pm-3:40 pm

1 stop33h 35m

Tokyo Narita

jue. 10/23

4:55 pm-10:49 am

2 stops31h 54m

$650

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

mié. 10/29

4:05 pm-4:30 pm

1 stop34h 25m

Tokyo Narita

lun. 11/10

6:45 pm-3:47 pm

2 stops36h 02m

$654

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

mié. 10/29

4:05 pm-4:40 pm

1 stop34h 35m

Tokyo Haneda

lun. 11/10

6:50 pm-3:29 pm

1 stop35h 39m

$661

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

dom. 11/9

4:05 pm-4:20 pm

2 stops33h 15m

Tokyo Narita

mié. 11/12

6:45 pm-3:46 pm

2 stops36h 01m

$661

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

sáb. 11/8

4:05 pm-4:40 pm

1 stop33h 35m

Tokyo Haneda

vie. 11/14

6:50 pm-10:51 am

2 stops31h 01m

$720

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

mié. 10/22

7:16 am-10:40 pm

2 stops25h 24m

Okinawa Naha

lun. 11/3

6:00 pm-4:47 pm

2 stops37h 47m

$744

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 60 results
1
2
3
...
6

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.
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

What is the cheapest month to book a flight from St. Louis to Japan?

Currently, February is the cheapest month in which you can book a flight from St. Louis to Japan (average of $889). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,619). 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.

What is the cheapest time of day to fly from STL to JP?

Find hourly flight availability from St. Louis to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 13, 2025.

When flying from St. Louis to Japan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 agosto 13, 2025.
Read through reviews of airlines operating flights from St. Louis to Japan, such as Japan Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,545 reviews

Crew

8.7

Entertainment

7.8

Overall

8.3

Boarding

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Japan Airlines
8.3
Very good
1,545 reviews
Japan Airlines
8.3
Very good
1,545 reviews

Crew

8.7

Entertainment

7.8

Overall

8.3

Boarding

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Delta
8.0
Very good
7,979 reviews
Japan Airlines
8.3
Very good
1,545 reviews

Crew

8.7

Entertainment

7.8

Overall

8.3

Boarding

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
United Airlines
7.4
Good
8,920 reviews
Japan Airlines
8.3
Very good
1,545 reviews

Crew

8.7

Entertainment

7.8

Overall

8.3

Boarding

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very good
1,545 reviews

Crew

8.7

Entertainment

7.8

Overall

8.3

Boarding

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Air Canada
7.1
Good
9,943 reviews
Japan Airlines
8.3
Very good
1,545 reviews

Crew

8.7

Entertainment

7.8

Overall

8.3

Boarding

8.4

Comfort

8.2

Food

7.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

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.

  • What airport do you fly from for flights from St. Louis to Japan?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Japan. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the cheapest airlines to fly from St. Louis to Japan one-way?

    The cheapest airlines for a one-way flight from St. Louis to Japan are Air Canada ($345), Hawaiian Airlines ($374), and Alaska Airlines ($388).

  • What are the most popular routes from St. Louis to Japan?

    While some choose either Lambert-St Louis - Tokyo Haneda or Lambert-St Louis - Osaka Kansai Intl, Lambert-St Louis - Tokyo Narita is the most popular route from St. Louis to Japan.

  • Can I find deals for flights from St. Louis to Japan that include hotel bookings?

    Yes. In addition to deals on St. Louis to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Japan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Japan.

  • Can I find deals for business class flights from St. Louis to Japan?

    Yes. Cheapflights offers flight deals from St. Louis to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Japan?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Japan (average of $889). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,619). 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.

See more FAQs

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 for St. Louis to Japan

See prices for flight routes from nearby airports that may be better suited for you.
Springfield to Haneda flights
Springfield to Narita flights
St. Louis to Narita flights
St. Louis to Haneda flights
Kansas City to Suvarnabhumi flights
Kansas City to Manila flights
Kansas City to Narita flights
St. Louis to Suvarnabhumi flights
Kansas City to Haneda flights
St. Louis to Cebu City flights
St. Louis to Manila flights
St. Louis to New Delhi flights
St. Louis to Ho Chi Minh City flights
Kansas City to Hyderabad flights
Kansas City to Mumbai flights
St. Louis to Incheon Intl flights
St. Louis to Hyderabad flights
St. Louis to Mumbai flights
St. Louis to Hongqiao Intl flights
Kansas City to Ho Chi Minh City flights
St. Louis to Pu Dong flights
Kansas City to New Delhi flights
Kansas City to Incheon Intl flights
St. Louis to Bangalore flights
St. Louis to Denpasar flights
St. Louis to Taiwan Taoyuan Intl flights
St. Louis to Kolkata flights
St. Louis to Singapore flights
St. Louis to Sung Shan flights
Kansas City to Soekarno-Hatta Intl flights
Kansas City to Phuket City flights
Kansas City to Denpasar flights
Kansas City to Kuala Lumpur Intl flights
St. Louis to Kansai Intl flights
St. Louis to Kuala Lumpur Intl flights
St. Louis to Chennai flights
Kansas City to Cebu City flights
Kansas City to Lahore flights
St. Louis to Gimpo Intl flights
Kansas City to Hong Kong flights
Kansas City to Singapore flights
St. Louis to Ahmedabad flights
Kansas City to Kathmandu flights
Springfield to Suvarnabhumi flights
Springfield to Manila flights
St. Louis to Phuket City flights
Kansas City to Angeles City flights
Kansas City to Fukuoka flights

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 agosto 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$629Average$886FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$691Average$932FlexibilityNo cancel feeOn-time79%
ANACheapest$703Average$1,083FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$716Average$1,107FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$716Average$1,072FlexibilityNo cancel feeOn-time71%
DeltaCheapest$723Average$1,158FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.