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

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

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 45% 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.

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 January 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.

$311 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.

7:00 am - 4:00 pm

STL

NRT

18h 00m

1 stop

6:30 pm - 1:51 pm

NRT

STL

33h 21m

1 stop

$643Hawaiian Airlines

Sun, Feb 22 - Tue, Mar 10

2:50 pm - 4:00 pm

STL

NRT

34h 10m

1 stop

6:30 pm - 10:46 pm

NRT

STL

19h 16m

1 stop

$660Multiple Airlines

Mon, Jan 26 - Fri, Feb 6

4:05 pm - 4:40 pm

STL

HND

33h 35m

1 stop

6:50 pm - 3:29 pm

HND

STL

35h 39m

1 stop

$698Air Canada

Tue, Feb 10 - Tue, Feb 17

6:40 pm - 4:40 pm

STL

HND

31h 00m

2 stops

6:50 pm - 3:29 pm

HND

STL

35h 39m

1 stop

$703Air Canada

Tue, Feb 10 - Tue, Feb 17

6:25 am - 9:10 pm

STL

HND

23h 45m

2 stops

7:40 pm - 11:34 pm

HND

STL

17h 54m

2 stops

$729United Airlines

Sun, Feb 22 - Tue, Mar 10

7:04 am - 6:45 pm

STL

ITM

20h 41m

2 stops

3:25 pm - 10:58 pm

ITM

STL

22h 33m

2 stops

$755American Airlines

Tue, Feb 3 - Thu, Feb 19

8:00 am - 7:55 pm

STL

ITM

20h 55m

2 stops

1:40 pm - 7:29 pm

ITM

STL

20h 49m

2 stops

$844American Airlines

Fri, Feb 27 - Fri, Mar 6

7:41 am - 7:20 pm

STL

OKA

44h 39m

2 stops

2:15 pm - 10:59 pm

OKA

STL

23h 44m

2 stops

$856United Airlines

Fri, Feb 27 - Fri, Mar 6

8:00 am - 7:55 pm

STL

ITM

20h 55m

2 stops

7:25 am - 1:50 pm

ITM

STL

21h 25m

2 stops

$880Japan Airlines

Sun, Feb 15 - Sat, Feb 28

7:04 am - 8:25 am

STL

KIX

34h 21m

2 stops

5:50 pm - 11:59 pm

KIX

STL

21h 09m

1 stop

$882Japan Airlines

Tue, Feb 3 - Thu, Feb 19

Japan Airlines flights from St. Louis to Japan

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

Japan Airlines

Feb 15

STL8:00 amLambert-St Louis

20h 55m

2 stops

ITM7:55 pmOsaka Itami

Feb 28

ITM7:25 amOsaka Itami

21h 25m

2 stops

STL1:50 pmLambert-St Louis

$880

Japan Airlines

Feb 3

STL7:04 amLambert-St Louis

34h 21m

2 stops

KIX8:25 amOsaka Kansai Intl

Feb 19

KIX5:50 pmOsaka Kansai Intl

21h 09m

1 stop

STL11:59 pmLambert-St Louis

$882

Japan Airlines

Feb 15

STL6:38 amLambert-St Louis

21h 12m

1 stop

KIX6:50 pmOsaka Kansai Intl

Feb 28

KIX5:50 pmOsaka Kansai Intl

21h 09m

1 stop

STL11:59 pmLambert-St Louis

$885

ANA flights from St. Louis to Japan

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

ANA

Feb 18

STL7:41 amLambert-St Louis

22h 24m

1 stop

HND9:05 pmTokyo Haneda

Feb 25

HND6:20 pmTokyo Haneda

15h 54m

1 stop

STL7:14 pmLambert-St Louis

$731

ANA

Feb 23

STL7:41 amLambert-St Louis

22h 24m

1 stop

HND9:05 pmTokyo Haneda

Mar 5

HND6:20 pmTokyo Haneda

15h 54m

1 stop

STL7:14 pmLambert-St Louis

$732

ANA

Feb 23

STL8:17 amLambert-St Louis

18h 28m

1 stop

HND5:45 pmTokyo Haneda

Mar 5

HND6:20 pmTokyo Haneda

31h 16m

1 stop

STL10:36 amLambert-St Louis

$737

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 2/22

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Tue 3/10

6:30 pm-1:51 pm

1 stop33h 21m

$643

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 1/26

2:50 pm-4:00 pm

1 stop34h 10m

Tokyo Narita

Fri 2/6

6:30 pm-10:46 pm

1 stop19h 16m

$660

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 2/10

4:05 pm-4:40 pm

1 stop33h 35m

Tokyo Haneda

Tue 2/17

6:50 pm-3:29 pm

1 stop35h 39m

$698

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 2/10

6:40 pm-4:40 pm

2 stops31h 00m

Tokyo Haneda

Tue 2/17

6:50 pm-3:29 pm

1 stop35h 39m

$703

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/22

6:25 am-9:10 pm

2 stops23h 45m

Tokyo Haneda

Tue 3/10

7:40 pm-11:34 pm

2 stops17h 54m

$729

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 2/3

7:04 am-6:45 pm

2 stops20h 41m

Osaka Itami

Thu 2/19

3:25 pm-10:58 pm

2 stops22h 33m

$755

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Fri 2/27

8:00 am-7:55 pm

2 stops20h 55m

Osaka Itami

Fri 3/6

1:40 pm-7:29 pm

2 stops20h 49m

$844

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Fri 2/27

7:41 am-7:20 pm

2 stops44h 39m

Okinawa Naha

Fri 3/6

2:15 pm-10:59 pm

2 stops23h 44m

$856

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 2/15

8:00 am-7:55 pm

2 stops20h 55m

Osaka Itami

Sat 2/28

7:25 am-1:50 pm

2 stops21h 25m

$880

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/3

7:04 am-8:25 am

2 stops34h 21m

Osaka Kansai Intl

Thu 2/19

5:50 pm-11:59 pm

1 stop21h 09m

$882

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 September is, on average, the cheapest month to fly to Japan from St. Louis, with most prices found around $734. If you aren’t able to travel to Japan during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $793.

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

You could potentially save up to 16% 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 55m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 55m

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 January 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 11,129 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,622 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $691	Free Cancellation	Rating 8.3 1,685 reviews	Search Japan Airlines flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,072 reviews	Search ANA flights
Delta	PriceFrom $711	Free Cancellation	Rating 7.9 8,048 reviews	Search Delta flights
United Airlines	PriceFrom $738	Free Cancellation	Rating 7.4 9,163 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.