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 36% 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?

United Airlines, 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 May 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.

$388 Cheap Flights from St. Louis to Japan in 2026

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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.

3:19 pm - 4:00 pm

STL

NRT

34h 41m

1 stop

3:55 pm - 9:40 am

NRT

STL

31h 45m

2 stops

$1,062Multiple Airlines

Sat, Sep 26 - Fri, Oct 9

6:00 am - 4:00 pm

STL

NRT

20h 00m

1 stop

6:00 pm - 11:59 pm

NRT

STL

19h 59m

1 stop

$1,072Multiple Airlines

Wed, Sep 16 - Fri, Sep 25

5:30 pm - 9:15 pm

STL

HND

37h 45m

1 stop

3:50 pm - 6:39 pm

HND

STL

16h 49m

1 stop

$1,077United Airlines

Sun, Aug 30 - Wed, Sep 2

6:00 am - 4:00 pm

STL

NRT

20h 00m

1 stop

6:00 pm - 2:21 pm

NRT

STL

34h 21m

1 stop

$1,079Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

8:50 am - 3:25 pm

STL

HND

16h 35m

1 stop

6:20 pm - 7:25 pm

HND

STL

16h 05m

1 stop

$1,080ANA

Tue, Aug 11 - Tue, Nov 3

6:54 pm - 9:15 pm

STL

HND

36h 21m

1 stop

3:50 pm - 8:38 pm

HND

STL

18h 48m

2 stops

$1,082United Airlines

Sun, Aug 30 - Wed, Sep 2

6:15 am - 3:25 pm

STL

HND

19h 10m

1 stop

5:15 pm - 12:02 pm

HND

STL

32h 47m

1 stop

$1,086ANA

Wed, Aug 19 - Wed, Aug 26

7:00 am - 2:15 pm

STL

HND

17h 15m

1 stop

8:00 pm - 12:36 am

HND

STL

19h 36m

2 stops

$1,093Delta

Sun, Aug 9 - Wed, Nov 4

2:40 pm - 7:10 pm

STL

OKJ

38h 30m

2 stops

2:15 pm - 2:00 pm

OKJ

STL

37h 45m

2 stops

$1,825Air Canada

Sat, Sep 5 - Wed, Sep 9

2:40 pm - 7:50 pm

STL

FUK

39h 10m

2 stops

12:55 pm - 8:00 pm

FUK

STL

21h 05m

2 stops

$1,889Air Canada

Sun, Sep 6 - Thu, Sep 10

Cathay Pacific flights from St. Louis to Japan

Our best Cathay Pacific deals on St. Louis to Japan flight tickets

Cathay Pacific

Sep 15

STL10:14 amLambert-St Louis

37h 41m

2 stops

HND1:55 pmTokyo Haneda

Sep 29

HND9:55 amTokyo Haneda

26h 05m

2 stops

STL10:00 pmLambert-St Louis

$1,158

Cathay Pacific

Oct 7

STL7:01 amLambert-St Louis

40h 39m

2 stops

NRT1:40 pmTokyo Narita

Oct 21

NRT6:20 pmTokyo Narita

43h 21m

2 stops

STL11:41 pmLambert-St Louis

$1,235

Cathay Pacific

Aug 22

STL9:31 amLambert-St Louis

31h 19m

2 stops

NRT6:50 amTokyo Narita

Sep 5

NRT6:20 pmTokyo Narita

42h 05m

2 stops

STL10:25 pmLambert-St Louis

$1,244

United Airlines flights from St. Louis to Japan

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

United Airlines

Aug 30

STL5:30 pmLambert-St Louis

37h 45m

1 stop

HND9:15 pmTokyo Haneda

Sep 2

HND3:50 pmTokyo Haneda

16h 49m

1 stop

STL6:39 pmLambert-St Louis

$1,077

United Airlines

Aug 30

STL6:54 pmLambert-St Louis

36h 21m

1 stop

HND9:15 pmTokyo Haneda

Sep 2

HND3:50 pmTokyo Haneda

18h 48m

2 stops

STL8:38 pmLambert-St Louis

$1,082

United Airlines

Aug 10

STL5:10 amLambert-St Louis

23h 50m

2 stops

HND7:00 pmTokyo Haneda

Nov 6

HND6:25 pmTokyo Haneda

20h 00m

1 stop

STL11:25 pmLambert-St Louis

$1,083

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sat 9/26

3:19 pm-4:00 pm

1 stop34h 41m

Tokyo Narita

Fri 10/9

3:55 pm-9:40 am

2 stops31h 45m

$1,062

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 9/16

6:00 am-4:00 pm

1 stop20h 00m

Tokyo Narita

Fri 9/25

6:00 pm-11:59 pm

1 stop19h 59m

$1,072

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 8/30

5:30 pm-9:15 pm

1 stop37h 45m

Tokyo Haneda

Wed 9/2

3:50 pm-6:39 pm

1 stop16h 49m

$1,077

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 9/15

6:00 am-4:00 pm

1 stop20h 00m

Tokyo Narita

Tue 9/22

6:00 pm-2:21 pm

1 stop34h 21m

$1,079

Quickest round-trip

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 8/11

8:50 am-3:25 pm

1 stop16h 35m

Tokyo Haneda

Tue 11/3

6:20 pm-7:25 pm

1 stop16h 05m

$1,080

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 8/30

6:54 pm-9:15 pm

1 stop36h 21m

Tokyo Haneda

Wed 9/2

3:50 pm-8:38 pm

2 stops18h 48m

$1,082

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 8/19

6:15 am-3:25 pm

1 stop19h 10m

Tokyo Haneda

Wed 8/26

5:15 pm-12:02 pm

1 stop32h 47m

$1,086

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 8/9

7:00 am-2:15 pm

1 stop17h 15m

Tokyo Haneda

Wed 11/4

8:00 pm-12:36 am

2 stops19h 36m

$1,093

St. LouisOkayama

STL - OKJ

STLOKJ

Lambert-St Louis

Sat 9/5

2:40 pm-7:10 pm

2 stops38h 30m

Okayama

Wed 9/9

2:15 pm-2:00 pm

2 stops37h 45m

$1,825

St. LouisFukuoka

STL - FUK

STLFUK

Lambert-St Louis

Sun 9/6

2:40 pm-7:50 pm

2 stops39h 10m

Fukuoka

Thu 9/10

12:55 pm-8:00 pm

2 stops21h 05m

$1,889

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 March is, on average, the cheapest month to fly to Japan from St. Louis, with most prices found around $349. If you aren’t able to travel to Japan during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $383.

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

You could potentially save up to 11% 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	16h 10m
Direct flights	None

The fastest flight from St. Louis to Japan takes 16h 10m

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

Search flight deals

Frequently asked questions about flying from 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 May 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 7.1 11,644 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 11,066 reviews	Search Air Canada flights
Delta	PriceFrom $733	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights
United Airlines	PriceFrom $747	Free Cancellation	Rating 7.4 9,748 reviews	Search United Airlines flights
ANA	PriceFrom $777	Free Cancellation	Rating 8.3 1,211 reviews	Search ANA flights
Japan Airlines	PriceFrom $846	Free Cancellation	Rating 8.3 1,825 reviews	Search Japan Airlines 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.