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 United Airlines ($408), American Airlines ($426), and Air Canada ($448).

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

While some choose either Lambert-St Louis - Tokyo Haneda or Lambert-St Louis - Fukuoka, 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 $799 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 $1,106 per person but you can even find prices for as low as $719. The most expensive prices can be found in the month of June. Opting for a February flight can save you 21% on your journey compared to booking in June

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.

$969+ Flights from St. Louis to Japan

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Cheap flight deals from St. Louis to Japan

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$731 (Justfly.com)
One-way from	$408 (United Airlines)
Popular in	June
Cheapest in	February
Average price	$1,072

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

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One-way flight from Lambert-St Louis to Japan

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($171 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 March 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 March 25, 2025.

Mon 7/78:00 amSTL - ITM

2 stops33h 25mANA

Mon 9/87:00 pmITM - STL

2 stops33h 26mANA

Deal found 3/24

$731

Fri 8/298:20 amSTL - HND

1 stop17h 05mANA

Mon 9/85:15 pmHND - STL

1 stop16h 12mANA

Deal found 3/24

$733

Sun 11/28:25 amSTL - HND

1 stop17h 25mUnited Airlines

Thu 11/209:55 pmHND - STL

2 stops17h 32mUnited Airlines

Deal found 3/24

$738

Sun 11/25:15 amSTL - NRT

1 stop17h 55mUnited Airlines

Wed 11/195:00 pmNRT - STL

1 stop15h 03mUnited Airlines

Deal found 3/24

$739

Fri 9/127:44 amSTL - KIX

2 stops34h 41mJapan Airlines

Fri 9/265:55 pmKIX - STL

1 stop19h 04mJapan Airlines

Deal found 3/23

$740

Thu 10/3010:45 amSTL - HND

1 stop17h 00mDelta

Fri 11/215:35 pmHND - STL

1 stop20h 26mDelta

Deal found 3/24

$741

Wed 9/105:30 amSTL - KIX

2 stops19h 20mUnited Airlines

Fri 9/264:50 pmKIX - STL

1 stop21h 37mUnited Airlines

Deal found 3/23

$743

Wed 11/52:55 pmSTL - NRT

1 stop34h 05mAlaska Airlines

Tue 11/186:25 pmNRT - STL

1 stop20h 31mAlaska Airlines

Deal found 3/24

$744

Tue 10/147:00 amSTL - HND

1 stop17h 20mAmerican Airlines

Wed 10/224:30 pmHND - STL

1 stop15h 48mAmerican Airlines

Deal found 3/23

$759

Mon 7/78:00 amSTL - KIX

2 stops23h 50mANA

Mon 9/86:45 amKIX - STL

2 stops26h 42mANA

Deal found 3/23

$764

Tue 9/25:30 pmSTL - NRT

2 stops32h 15mAir Canada

Tue 9/95:25 pmNRT - STL

1 stop35h 51mAir Canada

Deal found 3/24

$802

Sun 11/25:15 amSTL - NRT

1 stop17h 55mANA

Thu 11/205:05 pmNRT - STL

1 stop34h 15mANA

Deal found 3/24

$817

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 March 25, 2025.

Mon 7/78:00 amSTL - ITM

2 stops33h 25mANA

Mon 9/87:00 pmITM - STL

2 stops33h 26mANA

Deal found 3/24

$731

Fri 9/127:44 amSTL - KIX

2 stops34h 41mJapan Airlines

Fri 9/265:55 pmKIX - STL

1 stop19h 04mJapan Airlines

Deal found 3/23

$740

Wed 9/105:30 amSTL - KIX

2 stops19h 20mUnited Airlines

Tue 9/304:50 pmKIX - STL

1 stop21h 37mUnited Airlines

Deal found 3/23

$743

Sat 5/35:29 pmSTL - NRT

2 stops31h 56mAir Canada

Tue 5/135:35 pmNRT - STL

2 stops32h 44mAir Canada

Deal found 3/24

$836

Mon 4/285:26 amSTL - NRT

1 stop19h 34mAmerican Airlines

Mon 6/26:15 pmNRT - STL

1 stop17h 40mAmerican Airlines

Deal found 3/24

$888

Fri 4/257:04 amSTL - NRT

1 stop17h 56mMultiple Airlines

Fri 5/26:30 pmNRT - STL

1 stop28h 31mMultiple Airlines

Deal found 3/24

$1,043

Sun 3/307:10 pmSTL - HND

2 stops27h 55mDelta

Tue 4/84:20 pmHND - STL

2 stops21h 09mDelta

Deal found 3/24

$1,190

Wed 6/116:30 amSTL - NRT

2 stops19h 55mWestJet

Sat 6/216:30 pmNRT - STL

2 stops29h 09mWestJet

Deal found 3/24

$1,432

Sat 9/207:59 pmSTL - KIX

2 stops35h 16mCathay Pacific

Sun 9/284:20 pmKIX - STL

3 stops44h 07mCathay Pacific

Deal found 3/23

$1,504

Mon 7/78:00 amSTL - KIX

2 stops23h 50mANA

Mon 9/86:45 amKIX - STL

2 stops26h 42mANA

Deal found 3/23

$764

Sat 9/139:50 amSTL - ITM

2 stops20h 35mJapan Airlines

Fri 9/264:30 pmITM - STL

2 stops20h 29mJapan Airlines

Deal found 3/23

$823

Sun 4/275:35 pmSTL - HND

2 stops30h 20mUnited Airlines

Wed 4/3010:40 amHND - STL

1 stop15h 40mUnited Airlines

Deal found 3/24

$831

Last-minute flights from St. Louis to Japan
Discover last-minute flight deals from St. Louis to Japan. Data last updated March 25, 2025 and is based on user searches.

Sun 3/309:39 amSTL - HND

1 stop16h 16mANA

Tue 4/85:15 pmHND - STL

1 stop16h 49mANA

Deal found 3/24

$937

Sun 3/308:42 amSTL - NRT

1 stop16h 03mUnited Airlines

Wed 4/95:15 pmNRT - STL

1 stop20h 00mUnited Airlines

Deal found 3/24

$945

Sun 3/307:10 pmSTL - HND

2 stops27h 55mDelta

Tue 4/84:20 pmHND - STL

2 stops21h 09mDelta

Deal found 3/24

$1,190

Mon 3/311:12 pmSTL - NRT

2 stops36h 13mAir Canada

Wed 4/95:35 pmNRT - STL

2 stops35h 14mAir Canada

Deal found 3/24

$861

Mon 3/316:44 amSTL - HND

2 stops26h 46mMultiple Airlines

Tue 4/81:30 amHND - STL

2 stops36h 29mMultiple Airlines

Deal found 3/24

$1,987

Tue 4/16:15 amSTL - HND

1 stop18h 05mJapan Airlines

Sun 4/611:55 amHND - STL

1 stop25h 21mJapan Airlines

Deal found 3/24

$1,194

Tue 4/112:15 pmSTL - NRT

3 stops34h 10mMultiple Airlines

Sun 4/66:30 pmNRT - STL

3 stops34h 16mMultiple Airlines

Deal found 3/24

$1,891

Tue 4/13:40 pmSTL - HND

2 stops40h 45mEmirates

Sat 4/512:05 amHND - STL

2 stops33h 59mEmirates

Deal found 3/24

$7,639

Wed 4/26:30 amSTL - HND

1 stop19h 25mUnited Airlines

Wed 4/1610:40 amHND - STL

1 stop19h 07mUnited Airlines

Deal found 3/24

$944

Wed 4/211:55 amSTL - HND

2 stops29h 05mBritish Airways

Tue 4/1512:20 amHND - STL

2 stops34h 38mBritish Airways

Deal found 3/24

$3,630

Sun 4/67:04 amSTL - HND

1 stop18h 51mJapan Airlines

Wed 4/167:45 pmHND - STL

1 stop17h 31mJapan Airlines

Deal found 3/24

$1,023

Mon 4/73:40 pmSTL - OKA

2 stops27h 45mANA

Wed 5/79:05 pmOKA - STL

2 stops29h 14mANA

Deal found 3/24

$835

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 March 25, 2025.

Thu 5/15:20 amSTL - NRT

2 stops19h 20mUnited Airlines

Deal found 3/24

$408

Mon 6/96:00 amSTL - NRT

2 stops19h 15mAmerican Airlines

Deal found 3/24

$426

Tue 4/223:30 pmSTL - HND

1 stop34h 20mAir Canada

Deal found 3/24

$448

Tue 4/225:35 pmSTL - NRT

2 stops31h 50mAir Canada

Deal found 3/24

$457

Tue 4/226:15 amSTL - NRT

1 stop17h 45mANA

Deal found 3/24

$463

Tue 4/224:45 pmSTL - HND

3 stops36h 15mUnited Airlines

Deal found 3/24

$472

Thu 4/246:15 amSTL - FUK

2 stops48h 55mJapan Airlines

Deal found 3/24

$489

Tue 6/310:36 amSTL - HND

2 stops28h 04mAmerican Airlines

Deal found 3/23

$506

Wed 6/47:00 amSTL - NRT

1 stop18h 00mMultiple Airlines

Deal found 3/23

$510

Tue 5/271:30 pmSTL - KIX

2 stops36h 55mAir Canada

Deal found 3/23

$523

Wed 4/96:00 amSTL - HND

1 stop18h 20mDelta

Deal found 3/23

$581

Tue 4/13:40 pmSTL - OKA

2 stops60h 30mUnited Airlines

Deal found 3/24

$582

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 - ITM

STLITM

Lambert-St Louis

Mon 7/7

8:00 am-7:25 am

2 stops33h 25m

Osaka Itami

Mon 9/8

7:00 pm-2:26 pm

2 stops33h 26m

$731

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Fri 9/12

7:44 am-8:25 am

2 stops34h 41m

Osaka Kansai Intl

Fri 9/26

5:55 pm-10:59 pm

1 stop19h 04m

$740

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 9/10

5:30 am-2:50 pm

2 stops19h 20m

Osaka Kansai Intl

Fri 9/26

4:50 pm-12:27 am

1 stop21h 37m

$743

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 7/7

8:00 am-9:50 pm

2 stops23h 50m

Osaka Kansai Intl

Mon 9/8

6:45 am-7:27 pm

2 stops26h 42m

$764

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sat 9/13

9:50 am-8:25 pm

2 stops20h 35m

Osaka Itami

Fri 9/26

4:30 pm-10:59 pm

2 stops20h 29m

$823

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 4/27

5:35 pm-1:55 pm

2 stops30h 20m

Tokyo Haneda

Wed 4/30

10:40 am-12:20 pm

1 stop15h 40m

$831

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Mon 4/7

3:40 pm-9:25 am

2 stops27h 45m

Okinawa Naha

Wed 5/7

9:05 pm-12:19 pm

2 stops29h 14m

$835

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 5/3

5:29 pm-3:25 pm

2 stops31h 56m

Tokyo Narita

Tue 5/13

5:35 pm-12:19 pm

2 stops32h 44m

$836

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Fri 9/12

5:30 pm-4:25 pm

2 stops32h 55m

Osaka Kansai Intl

Sat 9/27

6:05 pm-7:57 pm

2 stops39h 52m

$849

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 4/28

5:54 pm-2:20 pm

2 stops30h 26m

Tokyo Narita

Mon 6/2

5:00 pm-10:39 am

2 stops31h 39m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 53 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 $867). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,682). 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, Japan Airlines and ANA. 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

1,169 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

1,169 reviews

EVA Air

8.4

Very good

1,169 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

1,169 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

825 reviews

EVA Air

8.4

Very good

1,169 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

442 reviews

EVA Air

8.4

Very good

1,169 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.

Delta

8.0

Very good

7,890 reviews

EVA Air

8.4

Very good

1,169 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 United Airlines ($408), American Airlines ($426), and Air Canada ($448).
What are the most popular routes from St. Louis to Japan?
While some choose either Lambert-St Louis - Tokyo Haneda or Lambert-St Louis - Fukuoka, 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 $867). Flying from St. Louis to Japan in December is currently the most expensive (average of $1,682). 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
American Airlines	Cheapest$408	Average$1,225	FlexibilityNo cancel fee	On-time71%
Japan Airlines	Cheapest$691	Average$999	FlexibilityNo cancel fee	On-time79%
ANA	Cheapest$729	Average$1,143	FlexibilityNo cancel fee	On-time80%
United Airlines	Cheapest$738	Average$1,338	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$738	Average$1,386	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$858	Average$1,202	FlexibilityNo cancel fee	On-time67%

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$408+ 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 5/1. 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 March 25, 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 March 25, 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 March 25, 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 March 25, 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 March 25, 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 March 25, 2025.