What airlines fly to Japan?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Japan from St. Louis according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Japan. Keep in mind that there are 6 different airlines that fly to Japan on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Japan?

Air Canada, ANA, and Delta are the most popular carriers operating from Lambert-St Louis to Japan

When did momondo last update prices for flights from Lambert-St Louis Airport to Japan?

Prices for flights from Lambert-St Louis Airport to Japan were last updated today.

How many operators does momondo search for flights from Lambert-St Louis Airport to Japan?

There are 6 operators available for flights from Lambert-St Louis Airport to Japan as of February 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Japan?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Japan.

What documentation or ID do you need to fly to Japan?

The necessary travel and health documents for your Japan trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$315 Cheap Flights from St. Louis to Japan in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Japan

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 4:00 pm

STL

NRT

18h 00m

1 stop

6:30 pm - 11:59 pm

NRT

STL

19h 29m

1 stop

$739Multiple Airlines

Fri, Feb 27 - Sun, Mar 8

7:00 am - 4:00 pm

STL

NRT

18h 00m

1 stop

6:30 pm - 1:51 pm

NRT

STL

33h 21m

1 stop

$747Multiple Airlines

Fri, Feb 27 - Sun, Mar 8

7:00 am - 4:00 pm

STL

NRT

18h 00m

1 stop

6:30 pm - 11:59 pm

NRT

STL

20h 29m

1 stop

$762Multiple Airlines

Sun, Feb 22 - Thu, Feb 26

4:05 pm - 3:50 pm

STL

NRT

33h 45m

1 stop

5:35 pm - 8:05 pm

NRT

STL

16h 30m

1 stop

$766Air Canada

Sat, Apr 25 - Fri, May 8

4:05 pm - 3:25 pm

STL

NRT

33h 20m

2 stops

5:35 pm - 8:05 pm

NRT

STL

16h 30m

1 stop

$769Air Canada

Sat, Apr 25 - Fri, May 8

8:30 am - 4:50 pm

STL

HND

17h 20m

1 stop

6:20 pm - 7:14 pm

HND

STL

15h 54m

1 stop

$834United Airlines

Sun, Feb 22 - Thu, Feb 26

7:41 am - 9:05 pm

STL

HND

22h 24m

1 stop

4:50 pm - 8:23 pm

HND

STL

18h 33m

1 stop

$835United Airlines

Sun, Feb 22 - Thu, Feb 26

10:14 am - 5:45 pm

STL

HND

16h 31m

1 stop

8:00 pm - 11:58 pm

HND

STL

17h 58m

1 stop

$836Delta

Mon, Mar 2 - Wed, Mar 18

8:00 am - 8:25 am

STL

KIX

34h 25m

2 stops

9:00 pm - 2:07 pm

KIX

STL

31h 07m

2 stops

$917Japan Airlines

Mon, Mar 9 - Mon, Mar 16

7:00 am - 6:45 pm

STL

ITM

21h 45m

2 stops

8:05 pm - 2:07 pm

ITM

STL

32h 02m

2 stops

$934Japan Airlines

Mon, Mar 9 - Mon, Mar 16

ANA flights from St. Louis to Japan

Our best ANA deals on St. Louis to Japan flight tickets

ANA

Feb 21

STL1:11 pmLambert-St Louis

37h 34m

1 stop

HND5:45 pmTokyo Haneda

Mar 4

HND6:20 pmTokyo Haneda

15h 54m

1 stop

STL7:14 pmLambert-St Louis

$803

ANA

Feb 23

STL8:17 amLambert-St Louis

18h 28m

1 stop

HND5:45 pmTokyo Haneda

Mar 5

HND6:20 pmTokyo Haneda

15h 54m

1 stop

STL7:14 pmLambert-St Louis

$809

ANA

Feb 9

STL8:05 amLambert-St Louis

18h 40m

1 stop

HND5:45 pmTokyo Haneda

Feb 11

HND6:20 pmTokyo Haneda

16h 07m

1 stop

STL7:27 pmLambert-St Louis

$814

American Airlines flights from St. Louis to Japan

Our best American Airlines deals on St. Louis to Japan flight tickets

American Airlines

Feb 23

STL5:12 amLambert-St Louis

19h 18m

1 stop

NRT3:30 pmTokyo Narita

Mar 5

NRT5:30 pmTokyo Narita

16h 59m

1 stop

STL7:29 pmLambert-St Louis

$817

American Airlines

Feb 23

STL6:36 pmLambert-St Louis

19h 29m

2 stops

HND5:05 amTokyo Haneda

Mar 5

HND8:25 pmTokyo Haneda

18h 23m

2 stops

STL11:48 pmLambert-St Louis

$820

American Airlines

Feb 25

STL9:37 amLambert-St Louis

21h 23m

1 stop

HND10:00 pmTokyo Haneda

Mar 5

HND5:55 pmTokyo Haneda

16h 34m

1 stop

STL7:29 pmLambert-St Louis

$888

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Fri 2/27

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Sun 3/8

6:30 pm-11:59 pm

1 stop19h 29m

$739

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Fri 2/27

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Sun 3/8

6:30 pm-1:51 pm

1 stop33h 21m

$747

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 2/22

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 2/26

6:30 pm-11:59 pm

1 stop20h 29m

$762

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 4/25

4:05 pm-3:50 pm

1 stop33h 45m

Tokyo Narita

Fri 5/8

5:35 pm-8:05 pm

1 stop16h 30m

$766

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 4/25

4:05 pm-3:25 pm

2 stops33h 20m

Tokyo Narita

Fri 5/8

5:35 pm-8:05 pm

1 stop16h 30m

$769

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/22

8:30 am-4:50 pm

1 stop17h 20m

Tokyo Haneda

Thu 2/26

6:20 pm-7:14 pm

1 stop15h 54m

$834

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/22

7:41 am-9:05 pm

1 stop22h 24m

Tokyo Haneda

Thu 2/26

4:50 pm-8:23 pm

1 stop18h 33m

$835

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 3/2

10:14 am-5:45 pm

1 stop16h 31m

Tokyo Haneda

Wed 3/18

8:00 pm-11:58 pm

1 stop17h 58m

$836

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 3/9

8:00 am-8:25 am

2 stops34h 25m

Osaka Kansai Intl

Mon 3/16

9:00 pm-2:07 pm

2 stops31h 07m

$917

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 3/9

7:00 am-6:45 pm

2 stops21h 45m

Osaka Itami

Mon 3/16

8:05 pm-2:07 pm

2 stops32h 02m

$934

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Japan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Japan?

The month of January is, on average, the cheapest month to fly to Japan from St. Louis, with most prices found around $725. If you aren’t able to travel to Japan during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $750.

Can stopping save me money on St. Louis to Japan flights?

You could potentially save up to 28% on your flight if you consider stops on a St. Louis to Japan flight.

Cheap St. Louis to Japan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Japan

Fastest flight time	15h 25m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 25m

There are no direct flights from St. Louis to Japan. There are no popular flight routes from St. Louis to Japan.

Search flight deals

When did momondo last update prices for flights from Lambert-St Louis Airport to Japan?
Prices for flights from Lambert-St Louis Airport to Japan were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Japan?
There are 6 operators available for flights from Lambert-St Louis Airport to Japan as of February 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Japan?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Japan.
What documentation or ID do you need to fly to Japan?
The necessary travel and health documents for your Japan trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Japan

Compare and see reviews for airlines that fly from St. Louis to Japan with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $593	Free Cancellation	Rating 7.2 11,257 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,698 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $691	Free Cancellation	Rating 8.3 1,702 reviews	Search Japan Airlines flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,089 reviews	Search ANA flights
United Airlines	PriceFrom $738	Free Cancellation	Rating 7.4 9,259 reviews	Search United Airlines flights
Delta	PriceFrom $738	Free Cancellation	Rating 7.9 8,174 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Japan?

Finding the right flight to Japan from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Japan quick and easy, saving you time and money.

Can I find flights from St. Louis to Japan with flexible booking policies on momondo?

momondo does allow users to show only those flights to Japan from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Japan?

Once you have performed a search for St. Louis to Japan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Japan right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Japan from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Japan trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 3/10

Tue 3/17

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Japan

Popular cities

Other flights from St. Louis

Other flights to Japan

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Japan

Flights to Tokyofrom $378

Flights to Osakafrom $532

Flights to Okinawafrom $532

Flights to Fukuokafrom $535

Flights to Nagoyafrom $530

Flights to Hiroshimafrom $642

Flights to Kagoshimafrom $1,156

Flights to Ishigakifrom $1,429

Flights to Hakodatefrom $1,115

Flights to Sendaifrom $854

Flights to Miyakojimafrom $2,836

Flights to Iwakunifrom $1,232

Cheap flights from St. Louis to Japan from $315

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Japan departing on 2/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Japan

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

ANA flights from St. Louis to Japan

Our best ANA deals on St. Louis to Japan flight tickets

American Airlines flights from St. Louis to Japan

Our best American Airlines deals on St. Louis to Japan flight tickets

momondo Fare Finder

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

See travel insights to Japan from

How to get the cheapest flight ticket from St. Louis to Japan

What is the cheapest month to fly to Japan?

Can stopping save me money on St. Louis to Japan flights?

You could potentially save up to 28% on your flight if you consider stops on a St. Louis to Japan flight.

What is the cheapest airline that flies from Lambert-St Louis to Japan?

Air Canada, ANA, and Delta are the most popular carriers operating from Lambert-St Louis to Japan

What airlines fly to Japan?

Cheap St. Louis to Japan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Japan

Fastest flight time

Direct flights

When did momondo last update prices for flights from Lambert-St Louis Airport to Japan?

How many operators does momondo search for flights from Lambert-St Louis Airport to Japan?

How old do you have to be to fly from Lambert-St Louis Airport to Japan?

What documentation or ID do you need to fly to Japan?

Best airlines flying from St. Louis to Japan

Compare and see reviews for airlines that fly from St. Louis to Japan with momondo

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Japan?

Can I find flights from St. Louis to Japan with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Japan?

I’m not ready to book a flight from St. Louis to Japan right now. Can momondo alert me if prices change?

An easier way to manage your Japan trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Japan

Popular cities in Japan

Popular flights according to clicks in the last 7 days on momondo

St. Louis flight routes

According to popular flight searches on momondo this year

Japan flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Japan

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Japan

List of cabin classes available on flights landing in Japan. Availability may vary depending on flight origin and airline.

Complete your trip to Japan

Explore popular destinations other users love

According to popular flight searches on momondo this year