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 American Airlines ($446), United Airlines ($460), and Japan Airlines ($460).

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.

How far in advance should I book a flight from St. Louis to Japan?

To save up to 16% on this flight, we recommend booking at least 48 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to Japan from $719 1-2 weeks out and tickets from $834 for flights departing within the next 72 hours.

What is the cheapest month to fly from St. Louis to Japan?

February is one of the best times of the year to fly to Japan from St. Louis. Prices for February average $1,071 per person but you can even find prices for as low as $719. The most expensive prices can be found in the month of July. Opting for a February flight can save you 23% on your journey compared to booking in July

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.

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.

$1,001+ Flights from St. Louis to Japan

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Cheap flight deals from St. Louis to Japan

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$723 (Air Canada)
One-way from	$446 (American Airlines)
Popular in	July
Cheapest in	February
Average price	$1,088

Provider with most accurate pricing for Lambert-St Louis-Tokyo (TYO) flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Tokyo (TYO) flights.

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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. 13% potential increase in price ($163 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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 April 14, 2025.

Mon 7/75:30 pmSTL - KIX

2 stops32h 55mAir Canada

Mon 9/86:05 pmKIX - STL

2 stops39h 52mAir Canada

Deal found 4/13

$723

Thu 7/101:30 pmSTL - NRT

2 stops35h 25mAir Canada

Tue 7/155:35 pmNRT - STL

2 stops36h 12mAir Canada

Deal found 4/14

$844

Thu 10/169:15 amSTL - HND

1 stop16h 35mAir Canada

Sat 11/16:50 pmHND - STL

1 stop35h 36mAir Canada

Deal found 4/13

$849

Thu 9/48:10 amSTL - HND

1 stop17h 45mANA

Tue 9/165:15 pmHND - STL

1 stop14h 58mANA

Deal found 4/12

$857

Fri 10/248:25 amSTL - HND

1 stop17h 00mUnited Airlines

Sat 11/86:20 pmHND - STL

1 stop17h 44mUnited Airlines

Deal found 4/13

$863

Sun 10/58:26 amSTL - OKA

2 stops24h 14mJapan Airlines

Thu 10/1610:05 amOKA - STL

2 stops23h 56mJapan Airlines

Deal found 4/13

$867

Sat 9/65:30 pmSTL - NRT

2 stops31h 10mUnited Airlines

Sun 9/214:40 pmNRT - STL

2 stops18h 52mUnited Airlines

Deal found 4/13

$868

Wed 10/18:25 amSTL - OKA

2 stops24h 10mUnited Airlines

Tue 10/1411:05 amOKA - STL

2 stops24h 27mUnited Airlines

Deal found 4/13

$870

Mon 7/75:30 pmSTL - KIX

2 stops31h 20mUnited Airlines

Mon 9/84:50 pmKIX - STL

1 stop37h 56mUnited Airlines

Deal found 4/13

$879

Sun 10/53:30 pmSTL - OKA

2 stops27h 35mANA

Fri 10/178:00 amOKA - STL

2 stops25h 27mANA

Deal found 4/13

$891

Wed 11/57:20 amSTL - HND

2 stops19h 25mDelta

Fri 11/215:35 pmHND - STL

2 stops18h 00mDelta

Deal found 4/13

$891

Wed 10/19:20 amSTL - FUK

2 stops20h 35mANA

Tue 10/77:15 pmFUK - STL

2 stops36h 58mANA

Deal found 4/13

$902

Best flights from St. Louis to Japan
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 April 14, 2025.

Mon 7/75:30 pmSTL - KIX

2 stops32h 55mAir Canada

Mon 9/86:05 pmKIX - STL

2 stops39h 52mAir Canada

Deal found 4/13

$723

Sun 10/58:26 amSTL - OKA

2 stops24h 14mJapan Airlines

Thu 10/1610:05 amOKA - STL

2 stops23h 56mJapan Airlines

Deal found 4/13

$867

Wed 10/18:25 amSTL - OKA

2 stops24h 10mUnited Airlines

Thu 10/1611:05 amOKA - STL

2 stops22h 22mUnited Airlines

Deal found 4/13

$870

Sun 10/53:30 pmSTL - OKA

2 stops27h 35mANA

Fri 10/178:00 amOKA - STL

2 stops25h 27mANA

Deal found 4/13

$891

Tue 7/86:30 amSTL - HND

1 stop16h 35mDelta

Tue 7/226:25 pmHND - STL

2 stops20h 13mDelta

Deal found 4/13

$1,059

Mon 7/78:26 amSTL - ITM

2 stops21h 24mAmerican Airlines

Mon 9/82:35 pmITM - STL

2 stops19h 48mAmerican Airlines

Deal found 4/14

$1,081

Wed 5/76:30 amSTL - NRT

2 stops23h 30mMultiple Airlines

Thu 5/295:35 pmNRT - STL

1 stop16h 23mMultiple Airlines

Deal found 4/12

$1,188

Mon 4/2810:17 amSTL - NRT

2 stops37h 23mCathay Pacific

Mon 6/29:40 pmNRT - STL

2 stops39h 05mCathay Pacific

Deal found 4/13

$1,260

Sat 5/3112:59 pmSTL - NRT

2 stops37h 26mWestJet

Tue 6/246:30 pmNRT - STL

2 stops32h 05mWestJet

Deal found 4/14

$1,360

Mon 5/126:30 amSTL - OKA

2 stops36h 45mEVA Air

Tue 5/2710:15 amOKA - STL

2 stops45h 07mEVA Air

Deal found 4/12

$1,383

Mon 5/196:00 amSTL - HND

2 stops26h 50mKorean Air

Mon 6/22:00 amHND - STL

2 stops35h 26mKorean Air

Deal found 4/13

$1,612

Thu 7/101:30 pmSTL - NRT

2 stops35h 25mAir Canada

Tue 7/155:35 pmNRT - STL

2 stops36h 12mAir Canada

Deal found 4/14

$844

Last-minute flights from St. Louis to Japan
Discover last-minute flight deals from St. Louis to Japan. Data last updated April 14, 2025 and is based on user searches.

Mon 4/148:48 amSTL - NRT

1 stop15h 57mMultiple Airlines

Sat 4/194:30 pmNRT - STL

1 stop14h 01mMultiple Airlines

Deal found 4/14

$1,025

Thu 4/176:15 amSTL - FUK

2 stops22h 50mJapan Airlines

Sat 4/197:25 amFUK - STL

2 stops29h 51mJapan Airlines

Deal found 4/13

$1,211

Fri 4/1810:40 amSTL - FUK

2 stops19h 15mMultiple Airlines

Sun 4/2010:20 amFUK - STL

2 stops20h 34mMultiple Airlines

Deal found 4/14

$1,050

Sat 4/196:00 pmSTL - HND

2 stops26h 55mBritish Airways

Tue 4/2212:20 amHND - STL

2 stops29h 51mBritish Airways

Deal found 4/13

$9,589

Sun 4/208:00 amSTL - NRT

2 stops41h 25mAir Canada

Wed 4/305:35 pmNRT - STL

2 stops40h 08mAir Canada

Deal found 4/14

$957

Sun 4/209:39 amSTL - HND

1 stop21h 36mANA

Wed 4/305:15 pmHND - STL

1 stop18h 33mANA

Deal found 4/13

$962

Sun 4/203:30 pmSTL - HND

1 stop34h 20mAir Canada

Wed 4/306:10 pmHND - STL

2 stops32h 10mAir Canada

Deal found 4/14

$963

Sun 4/209:39 amSTL - HND

1 stop16h 16mUnited Airlines

Wed 4/3010:40 amHND - STL

1 stop18h 02mUnited Airlines

Deal found 4/14

$967

Sun 4/208:00 amSTL - NRT

1 stop17h 00mUnited Airlines

Wed 4/304:30 pmNRT - STL

1 stop19h 20mUnited Airlines

Deal found 4/14

$968

Wed 4/239:39 amSTL - NRT

1 stop15h 21mANA

Sat 5/35:00 pmNRT - STL

1 stop16h 35mANA

Deal found 4/13

$1,256

Wed 4/236:30 amSTL - HND

2 stops27h 00mMultiple Airlines

Fri 5/21:30 amHND - STL

2 stops36h 29mMultiple Airlines

Deal found 4/14

$2,054

Sun 4/275:35 pmSTL - HND

1 stop32h 20mUnited Airlines

Wed 4/303:45 pmHND - STL

1 stop17h 33mUnited Airlines

Deal found 4/14

$955

One-way flights from St. Louis to Japan
Search for one-way flight options from St. Louis to Japan. Find affordable one-way fares based on user searches. Data last updated April 14, 2025.

Sat 8/238:01 pmSTL - ITM

2 stops22h 34mAmerican Airlines

Deal found 4/13

$446

Sat 8/235:45 pmSTL - ITM

3 stops57h 20mUnited Airlines

Deal found 4/13

$460

Thu 5/16:15 amSTL - HND

1 stop21h 10mJapan Airlines

Deal found 4/14

$460

Thu 5/16:15 amSTL - NRT

1 stop20h 20mJapan Airlines

Deal found 4/14

$460

Sat 5/36:00 amSTL - NRT

1 stop18h 00mANA

Deal found 4/13

$466

Thu 5/14:45 pmSTL - HND

2 stops31h 10mUnited Airlines

Deal found 4/14

$469

Thu 5/16:30 amSTL - NRT

2 stops18h 15mUnited Airlines

Deal found 4/14

$469

Mon 6/308:35 amSTL - ITM

2 stops21h 15mJapan Airlines

Deal found 4/13

$478

Mon 6/308:35 amSTL - KIX

2 stops23h 40mJapan Airlines

Deal found 4/13

$479

Tue 4/225:35 pmSTL - HND

2 stops32h 15mAir Canada

Deal found 4/13

$484

Mon 6/306:28 amSTL - KIX

1 stop22h 17mAmerican Airlines

Deal found 4/13

$487

Tue 6/36:47 pmSTL - HND

2 stops19h 33mAmerican Airlines

Deal found 4/13

$487

Cheapflights Fare Finder

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

Price

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 7/7

5:30 pm-4:25 pm

2 stops32h 55m

Osaka Kansai Intl

Mon 9/8

6:05 pm-7:57 pm

2 stops39h 52m

$723

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Thu 7/10

1:30 pm-2:55 pm

2 stops35h 25m

Tokyo Narita

Tue 7/15

5:35 pm-3:47 pm

2 stops36h 12m

$844

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 10/4

6:35 am-3:50 pm

2 stops19h 15m

Tokyo Haneda

Mon 10/13

6:10 pm-3:16 pm

1 stop35h 06m

$854

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Thu 9/4

8:10 am-3:55 pm

1 stop17h 45m

Tokyo Haneda

Tue 9/16

5:15 pm-6:13 pm

1 stop14h 58m

$857

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 8/26

8:25 am-3:25 pm

1 stop17h 00m

Tokyo Haneda

Wed 9/10

12:30 am-3:44 pm

2 stops29h 14m

$865

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 7/7

5:30 pm-2:50 pm

2 stops31h 20m

Osaka Kansai Intl

Mon 9/8

4:50 pm-4:46 pm

1 stop37h 56m

$879

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sat 9/20

9:15 am-7:10 pm

2 stops19h 55m

Osaka Itami

Sun 9/28

2:05 pm-7:33 pm

2 stops19h 28m

$903

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 8/3

6:00 am-4:15 pm

2 stops20h 15m

Tokyo Haneda

Tue 8/26

3:15 pm-11:01 pm

2 stops21h 46m

$966

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 4/20

8:00 am-3:00 pm

1 stop17h 00m

Tokyo Narita

Wed 4/30

4:30 pm-9:50 pm

1 stop19h 20m

$968

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 5/3

6:00 am-2:00 pm

1 stop18h 00m

Tokyo Narita

Tue 5/13

5:00 pm-9:48 pm

1 stop18h 48m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 54 results

...

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 $866). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,670). 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?

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.

Rainfall in Japan by month

In terms of precipitation, rainfall in Japan ranges from 2.0 - 8.3 inches per month. September is typically the wettest month, when rainfall can reach 8.3 in. January is typically the driest time to visit Japan when rainfall is around 2.0 in.

Temperature in Japan by month

If weather is an important factor for your trip to Japan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Japan

To help decide which airline to fly from St. Louis to Japan, see what other customers have to say about EVA Air, Korean Air and Japan Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air

8.4

Very good

1,176 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Korean Air

8.4

Very good

1,063 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Japan Airlines

8.3

Very good

1,440 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

ANA

8.3

Very good

840 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Asiana Airlines

8.2

Very good

438 reviews

EVA Air

8.4

Very good

1,176 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

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 American Airlines ($446), United Airlines ($460), and Japan Airlines ($460).
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 $866). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,670). 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

Top 6 airlines flying from St. Louis to Japan

Airline	Cheapest	Average	Flexibility	On-time
Japan Airlines	Cheapest$691	Average$987	FlexibilityNo cancel fee	On-time79%
Air Canada	Cheapest$714	Average$997	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$716	Average$1,187	FlexibilityNo cancel fee	On-time71%
ANA	Cheapest$729	Average$1,135	FlexibilityNo cancel fee	On-time80%
United Airlines	Cheapest$738	Average$1,343	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$738	Average$1,376	FlexibilityNo cancel fee	On-timeN/A

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$446+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Japan with Cheapflights

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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 April 14, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Japan

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 April 14, 2025.

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 April 14, 2025.

Cheapflights Fare Finder

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

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.

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?

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 April 14, 2025.

Rainfall in Japan by month

Plan your trip to Japan by taking into account the average rainfall totals by month.

Temperature in Japan by month

Plan your trip to Japan by taking into account the average temperature totals by month.

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 April 14, 2025.

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?

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

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

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

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

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

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

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.

Top 6 airlines flying from St. Louis to Japan

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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 April 14, 2025.