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 42% 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?

Japan Airlines, Air Canada, 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 April 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.

$414 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.

12:10 pm - 4:25 pm

STL

KIX

38h 15m

2 stops

6:00 pm - 6:41 pm

KIX

STL

38h 41m

2 stops

$947Air Canada

Tue, Sep 15 - Tue, Sep 22

8:55 am - 4:25 pm

STL

KIX

17h 30m

1 stop

6:00 pm - 6:41 pm

KIX

STL

38h 41m

2 stops

$952Air Canada

Tue, Sep 15 - Tue, Sep 22

2:40 pm - 2:55 pm

STL

NRT

34h 15m

2 stops

5:40 pm - 2:00 pm

NRT

STL

34h 20m

2 stops

$967Air Canada

Tue, Sep 22 - Wed, Oct 7

8:35 am - 7:50 pm

STL

ITM

21h 15m

2 stops

7:25 am - 3:48 pm

ITM

STL

22h 23m

2 stops

$1,143Japan Airlines

Wed, Aug 5 - Fri, Aug 14

7:44 am - 7:50 pm

STL

ITM

22h 06m

2 stops

7:05 am - 2:25 pm

ITM

STL

21h 20m

2 stops

$1,144Japan Airlines

Tue, Sep 15 - Tue, Sep 22

5:10 am - 2:50 pm

STL

KIX

19h 40m

2 stops

4:55 pm - 10:09 am

KIX

STL

31h 14m

2 stops

$1,198United Airlines

Wed, Aug 5 - Fri, Aug 14

9:16 am - 5:05 pm

STL

ITM

41h 49m

2 stops

12:50 pm - 7:31 pm

ITM

STL

20h 41m

2 stops

$1,199United Airlines

Sun, Aug 30 - Wed, Sep 2

8:00 am - 10:45 pm

STL

OKA

24h 45m

2 stops

8:00 am - 7:31 pm

OKA

STL

25h 31m

2 stops

$1,229ANA

Sun, Aug 30 - Sun, Sep 6

1:18 pm - 9:00 am

STL

OKA

29h 42m

2 stops

11:55 am - 7:31 pm

OKA

STL

21h 36m

2 stops

$1,230ANA

Sun, Aug 30 - Sun, Sep 6

8:35 am - 7:50 pm

STL

ITM

21h 15m

2 stops

8:20 am - 3:48 pm

ITM

STL

21h 28m

2 stops

$1,299American Airlines

Thu, Aug 6 - Sat, Aug 15

China Airlines flights from St. Louis to Japan

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

China Airlines

May 12

STL4:46 pmLambert-St Louis

35h 19m

2 stops

FUK6:05 pmFukuoka

May 19

FUK9:00 pmFukuoka

32h 16m

2 stops

STL3:16 pmLambert-St Louis

$1,397

China Airlines

Aug 18

STL7:56 pmLambert-St Louis

34h 04m

2 stops

FUK8:00 pmFukuoka

Aug 25

FUK9:00 pmFukuoka

40h 58m

2 stops

STL11:58 pmLambert-St Louis

$1,437

EVA Air flights from St. Louis to Japan

Our best EVA Air deals on St. Louis to Japan flight tickets

EVA Air

Aug 20

STL7:34 pmLambert-St Louis

32h 46m

2 stops

FUK6:20 pmFukuoka

Aug 27

FUK12:20 pmFukuoka

39h 44m

2 stops

STL2:04 pmLambert-St Louis

$1,376

EVA Air

Aug 19

STL3:00 pmLambert-St Louis

37h 20m

2 stops

FUK6:20 pmFukuoka

Aug 26

FUK12:20 pmFukuoka

44h 18m

2 stops

STL6:38 pmLambert-St Louis

$1,515

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 9/15

12:10 pm-4:25 pm

2 stops38h 15m

Osaka Kansai Intl

Tue 9/22

6:00 pm-6:41 pm

2 stops38h 41m

$947

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 9/15

8:55 am-4:25 pm

1 stop17h 30m

Osaka Kansai Intl

Tue 9/22

6:00 pm-6:41 pm

2 stops38h 41m

$952

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 9/22

2:40 pm-2:55 pm

2 stops34h 15m

Tokyo Narita

Wed 10/7

5:40 pm-2:00 pm

2 stops34h 20m

$967

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Wed 8/5

8:35 am-7:50 pm

2 stops21h 15m

Osaka Itami

Fri 8/14

7:25 am-3:48 pm

2 stops22h 23m

$1,143

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 9/15

7:44 am-7:50 pm

2 stops22h 06m

Osaka Itami

Tue 9/22

7:05 am-2:25 pm

2 stops21h 20m

$1,144

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 8/5

5:10 am-2:50 pm

2 stops19h 40m

Osaka Kansai Intl

Fri 8/14

4:55 pm-10:09 am

2 stops31h 14m

$1,198

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 8/30

9:16 am-5:05 pm

2 stops41h 49m

Osaka Itami

Wed 9/2

12:50 pm-7:31 pm

2 stops20h 41m

$1,199

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Sun 8/30

8:00 am-10:45 pm

2 stops24h 45m

Okinawa Naha

Sun 9/6

8:00 am-7:31 pm

2 stops25h 31m

$1,229

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Sun 8/30

1:18 pm-9:00 am

2 stops29h 42m

Okinawa Naha

Sun 9/6

11:55 am-7:31 pm

2 stops21h 36m

$1,230

Quickest round-trip

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Thu 8/6

8:35 am-7:50 pm

2 stops21h 15m

Osaka Itami

Sat 8/15

8:20 am-3:48 pm

2 stops21h 28m

$1,299

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 $765.

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 56m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 56m

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 April 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 11,549 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,884 reviews	Search Air Canada flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,163 reviews	Search ANA flights
Japan Airlines	PriceFrom $709	Free Cancellation	Rating 8.3 1,762 reviews	Search Japan Airlines flights
Delta	PriceFrom $727	Free Cancellation	Rating 7.9 8,372 reviews	Search Delta flights
United Airlines	PriceFrom $747	Free Cancellation	Rating 7.4 9,535 reviews	Search United 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.