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$336+ Cheap flights from St. Louis (STL) to Japan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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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 septiembre 11, 2025.

Round-trip from

$649
(Expedia)

One-way from

$336
(SmartFares)

Popular in

June

Cheapest in

September

Average price

$792
From Lambert-St Louis to Japan
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One-way flight from Lambert-St Louis to Japan
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Highest demand for flights based on searches. 18% potential increase in price ($218 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 septiembre 11, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/136:00 amSTL - NRT
1 stop20h 00mHawaiian Airlines
lun. 9/156:25 pmNRT - STL
1 stop19h 34mHawaiian Airlines
Deal found 9/9$643
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/16:30 amSTL - NRT
2 stops43h 00mAir Canada
mar. 2/106:45 pmNRT - STL
2 stops43h 13mAir Canada
Deal found 9/10$652
This Air Canada deal was found by Cheapflights users on 9/11. 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 stops31h 01mAir Canada
Deal found 9/11$655
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/136:00 amSTL - NRT
1 stop20h 00mAlaska Airlines
lun. 9/156:25 pmNRT - STL
1 stop19h 34mAlaska Airlines
Deal found 9/10$657
This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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.
mar. 12/96:30 amSTL - HND
1 stop20h 15mANA
mar. 12/1610:25 amHND - STL
1 stop16h 50mANA
Deal found 9/9$659
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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.
dom. 11/1610:00 amSTL - NRT
2 stops39h 20mAir Canada
mié. 12/106:15 pmNRT - STL
2 stops36h 14mAir Canada
Deal found 9/9$660
This Air Canada deal was found by Cheapflights users on 9/10. 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. 12/14:05 pmSTL - HND
1 stop33h 35mAir Canada
mar. 2/106:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 9/10$661
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/187:16 amSTL - NRT
1 stop17h 44mAmerican Airlines
mié. 10/86:30 pmNRT - STL
1 stop18h 48mAmerican Airlines
Deal found 9/11$661
This Air Canada deal was found by Cheapflights users on 9/10. 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.
sáb. 12/64:05 pmSTL - HND
1 stop33h 35mAir Canada
sáb. 12/136:50 pmHND - STL
1 stop35h 39mAir Canada
Deal found 9/10$662
This Air Canada deal was found by Cheapflights users on 9/10. 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.
vie. 12/54:05 pmSTL - NRT
1 stop33h 25mAir Canada
vie. 12/196:45 pmNRT - STL
1 stop35h 44mAir Canada
Deal found 9/10$663
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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.
mar. 12/97:00 amSTL - NRT
1 stop17h 30mAmerican Airlines
mar. 12/165:30 pmNRT - STL
1 stop20h 17mAmerican Airlines
Deal found 9/9$667
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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.
mar. 12/98:30 amSTL - HND
1 stop17h 20mUnited Airlines
mar. 12/164:25 pmHND - STL
2 stops19h 32mUnited Airlines
Deal found 9/9$670

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 septiembre 11, 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

sáb. 12/6

6:42 pm-4:30 pm

2 stops30h 48m

Tokyo Narita

sáb. 12/13

6:45 pm-10:46 am

2 stops31h 01m

$655

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

jue. 1/15

4:05 pm-4:20 pm

2 stops33h 15m

Tokyo Narita

vie. 1/30

6:15 pm-3:29 pm

2 stops36h 14m

$663

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

dom. 11/16

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

mié. 12/10

6:15 pm-3:29 pm

2 stops36h 14m

$663

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

dom. 2/8

6:30 am-5:45 pm

1 stop20h 15m

Tokyo Haneda

vie. 2/27

10:25 am-2:18 pm

1 stop18h 53m

$666

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

lun. 2/9

6:00 am-3:30 pm

1 stop18h 30m

Tokyo Narita

vie. 2/27

5:15 pm-9:10 pm

1 stop18h 55m

$667

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

lun. 2/9

6:00 pm-4:50 am

2 stops19h 50m

Tokyo Haneda

jue. 2/26

6:20 pm-7:25 pm

1 stop16h 05m

$670

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

lun. 2/9

9:57 am-5:45 pm

1 stop16h 48m

Tokyo Haneda

jue. 2/26

12:50 am-12:20 pm

2 stops26h 30m

$670

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

mar. 2/10

8:25 am-4:50 pm

1 stop17h 25m

Tokyo Haneda

lun. 2/23

12:50 am-9:42 am

2 stops23h 52m

$670

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

mié. 2/11

8:25 am-4:50 pm

1 stop17h 25m

Tokyo Haneda

jue. 2/26

4:25 pm-10:06 pm

2 stops20h 41m

$670

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

lun. 2/9

6:59 pm-3:05 pm

2 stops29h 06m

Tokyo Haneda

vie. 2/27

4:25 pm-8:39 pm

2 stops19h 14m

$672

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 56 results
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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 $902). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,502). 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 septiembre 11, 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 septiembre 11, 2025.
Read through reviews of airlines operating flights from St. Louis to Japan, such as ANA, Japan Airlines, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
961 reviews

Crew

8.7

Boarding

8.6

Entertainment

7.9

Overall

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
ANA
8.4
Very good
961 reviews
ANA
8.4
Very good
961 reviews

Crew

8.7

Boarding

8.6

Entertainment

7.9

Overall

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Japan Airlines
8.3
Very good
1,559 reviews
ANA
8.4
Very good
961 reviews

Crew

8.7

Boarding

8.6

Entertainment

7.9

Overall

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Delta
8.0
Very good
7,960 reviews
ANA
8.4
Very good
961 reviews

Crew

8.7

Boarding

8.6

Entertainment

7.9

Overall

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
United Airlines
7.4
Good
8,937 reviews
ANA
8.4
Very good
961 reviews

Crew

8.7

Boarding

8.6

Entertainment

7.9

Overall

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Air Canada
7.1
Good
10,000 reviews
ANA
8.4
Very good
961 reviews

Crew

8.7

Boarding

8.6

Entertainment

7.9

Overall

8.4

Food

7.7

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me

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.

  • How long is the flight from St. Louis to Japan?

    Airlines like Air Canada, United Airlines, and American Airlines fly from St. Louis to Japan in about 20h 15m. The time it takes to get you to your destination can typically vary by up to 10h 33m. St. Louis and Japan are separated by a distance of 6383 mi. This flight may include one or multiple stops.

  • 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 Alaska Airlines ($336), Air Canada ($339), and ANA ($408).

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

    While some choose either Lambert-St Louis - Tokyo Haneda or Lambert-St Louis - Okinawa Naha, 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 $902). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,502). 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

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Alternative routes for St. Louis to Japan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from St. Louis to Japan

Discover the top 6 airlines that operate flights from St. Louis to Japan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$593Average$988FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$629Average$886FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$691Average$928FlexibilityNo cancel feeOn-time79%
ANACheapest$703Average$1,083FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$716Average$1,130FlexibilityNo cancel feeOn-time69%
DeltaCheapest$723Average$1,105FlexibilityNo cancel feeOn-timeN/A

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