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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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FUK
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$622
(Air Canada)

One-way from

$336
(Orbitz)

Popular in

June

Cheapest in

September

Average price

$1,167
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. 16% potential increase in price ($195 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

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.
Mon 9/11:30 pmSTL - NRT
1 stop35h 55mAir Canada
Fri 9/125:35 pmNRT - STL
2 stops32h 50mAir Canada
Deal found 7/2$622
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.
Mon 9/19:15 amSTL - HND
1 stop16h 35mAir Canada
Wed 9/106:10 pmHND - STL
2 stops30h 30mAir Canada
Deal found 7/2$634
This Air Canada deal was found by Cheapflights users on 7/1. 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 9/174:05 pmSTL - KIX
1 stop34h 20mAir Canada
Wed 9/246:05 pmKIX - STL
1 stop35h 13mAir Canada
Deal found 7/1$651
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:00 amSTL - NRT
1 stop18h 00mAlaska Airlines
Wed 12/106:25 pmNRT - STL
1 stop20h 31mAlaska Airlines
Deal found 7/2$686
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.
Mon 9/159:15 amSTL - ITM
2 stops21h 00mAir Canada
Mon 9/222:00 pmITM - STL
2 stops39h 18mAir Canada
Deal found 7/2$705
This Air Canada deal was found by Cheapflights users on 7/1. 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.
Mon 12/86:45 pmSTL - HND
2 stops30h 55mMultiple Airlines
Sat 12/206:50 pmHND - STL
1 stop35h 39mMultiple Airlines
Deal found 7/1$712
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:15 amSTL - HND
1 stop18h 05mANA
Wed 11/266:20 pmHND - STL
1 stop16h 05mANA
Deal found 7/3$752
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:30 amSTL - HND
1 stop17h 50mDelta
Wed 12/108:00 pmHND - STL
1 stop16h 59mDelta
Deal found 7/2$760
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.
Tue 11/186:45 amSTL - HND
2 stops23h 25mUnited Airlines
Thu 12/44:25 pmHND - STL
1 stop15h 01mUnited Airlines
Deal found 7/2$763
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:50 amSTL - FUK
2 stops21h 45mAmerican Airlines
Fri 9/262:45 pmFUK - STL
2 stops22h 14mAmerican Airlines
Deal found 7/2$770
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/65:49 pmSTL - OKA
2 stops34h 11mUnited Airlines
Tue 9/1610:55 amOKA - STL
2 stops46h 04mUnited Airlines
Deal found 7/1$772
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/145:49 pmSTL - KIX
1 stop31h 01mUnited Airlines
Thu 9/254:50 pmKIX - STL
1 stop37h 55mUnited Airlines
Deal found 7/1$784

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 3, 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

Mon 9/1

1:30 pm-3:25 pm

1 stop35h 55m

Tokyo Narita

Fri 9/12

5:35 pm-12:25 pm

2 stops32h 50m

$622

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 9/1

9:15 am-3:50 pm

1 stop16h 35m

Tokyo Haneda

Wed 9/10

6:10 pm-10:40 am

2 stops30h 30m

$634

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 9/17

4:05 pm-4:25 pm

1 stop34h 20m

Osaka Kansai Intl

Wed 9/24

6:05 pm-3:18 pm

1 stop35h 13m

$651

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 9/15

9:15 am-8:15 pm

2 stops21h 00m

Osaka Itami

Mon 9/22

2:00 pm-3:18 pm

2 stops39h 18m

$705

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 9/3

6:00 am-4:00 pm

1 stop20h 00m

Tokyo Narita

Mon 9/8

6:25 pm-11:59 pm

1 stop19h 34m

$732

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 8/31

8:20 am-3:25 pm

1 stop17h 05m

Tokyo Haneda

Wed 9/10

5:15 pm-7:27 pm

1 stop16h 12m

$756

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 9/13

6:00 am-2:30 pm

1 stop18h 30m

Tokyo Narita

Sat 9/27

4:30 pm-11:58 pm

1 stop21h 28m

$766

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 8/30

4:40 pm-4:30 am

2 stops21h 50m

Tokyo Haneda

Wed 9/10

5:15 pm-9:32 pm

1 stop18h 17m

$767

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 8/30

3:36 pm-1:05 pm

2 stops31h 29m

Tokyo Haneda

Wed 9/10

4:25 pm-10:02 pm

2 stops19h 37m

$768

St. LouisFukuoka

STL - FUK

STLFUK

Lambert-St Louis

Mon 9/15

8:50 am-8:35 pm

2 stops21h 45m

Fukuoka

Fri 9/26

2:45 pm-10:59 pm

2 stops22h 14m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 60 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 $871). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,624). 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 July 3, 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 July 3, 2025.
Read through reviews of airlines operating flights from St. Louis to Japan, such as ANA, Korean Air, and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
893 reviews

Comfort

8.2

Boarding

8.5

Entertainment

7.9

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.4
Very good
893 reviews
ANA
8.4
Very good
893 reviews

Comfort

8.2

Boarding

8.5

Entertainment

7.9

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Korean Air
8.4
Very good
1,101 reviews
ANA
8.4
Very good
893 reviews

Comfort

8.2

Boarding

8.5

Entertainment

7.9

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Japan Airlines
8.3
Very good
1,503 reviews
ANA
8.4
Very good
893 reviews

Comfort

8.2

Boarding

8.5

Entertainment

7.9

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Asiana Airlines
8.2
Very good
452 reviews
ANA
8.4
Very good
893 reviews

Comfort

8.2

Boarding

8.5

Entertainment

7.9

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Delta
8.0
Very good
7,970 reviews
ANA
8.4
Very good
893 reviews

Comfort

8.2

Boarding

8.5

Entertainment

7.9

Overall

8.4

Crew

8.7

Food

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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 ($336), Japan Airlines ($432), and Alaska Airlines ($438).

  • 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 $871). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,624). 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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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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$629Average$929FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$691Average$939FlexibilityNo cancel feeOn-time79%
ANACheapest$714Average$1,111FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$719Average$1,083FlexibilityNo cancel feeOn-time71%
DeltaCheapest$731Average$1,405FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$738Average$1,133FlexibilityNo cancel feeOn-time69%

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