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 46% 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 Japan Airlines 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 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.

$308 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 00m1 stop

6:30 pm - 1:51 pm

NRT

STL

33h 21m1 stop

$660Multiple Airlines

Tue, Mar 3 - Thu, Mar 12

7:00 am - 4:00 pm

STL

NRT

18h 00m1 stop

6:30 pm - 11:59 pm

NRT

STL

19h 29m1 stop

$661Multiple Airlines

Mon, Mar 2 - Thu, Mar 12

2:50 pm - 4:00 pm

STL

NRT

34h 10m1 stop

6:30 pm - 1:54 pm

NRT

STL

34h 24m1 stop

$665Multiple Airlines

Tue, Feb 3 - Tue, Feb 10

6:40 pm - 4:30 pm

STL

NRT

30h 50m2 stops

6:45 pm - 11:02 am

NRT

STL

31h 17m2 stops

$681Air Canada

Tue, Feb 3 - Tue, Feb 10

4:05 pm - 4:20 pm

STL

NRT

33h 15m2 stops

6:45 pm - 10:36 am

NRT

STL

30h 51m2 stops

$686Air Canada

Mon, Feb 9 - Fri, Feb 27

6:35 am - 8:45 pm

STL

KIX

23h 10m2 stops

9:00 am - 11:23 pm

KIX

STL

29h 23m2 stops

$764Delta

Tue, Feb 3 - Thu, Feb 12

2:45 pm - 4:40 pm

STL

KIX

58h 55m2 stops

6:35 pm - 1:14 pm

KIX

STL

33h 39m2 stops

$807United Airlines

Fri, Feb 20 - Fri, Feb 27

12:15 pm - 7:25 pm

STL

OKA

64h 10m2 stops

3:10 pm - 8:23 pm

OKA

STL

44h 13m2 stops

$809United Airlines

Thu, Feb 19 - Mon, Mar 2

6:38 am - 6:50 pm

STL

KIX

21h 12m1 stop

5:50 pm - 11:59 pm

KIX

STL

21h 09m1 stop

$860Japan Airlines

Thu, Feb 19 - Thu, Feb 26

7:00 am - 8:05 pm

STL

ITM

22h 05m2 stops

8:25 am - 5:00 pm

ITM

STL

23h 35m2 stops

$885Japan Airlines

Sun, Feb 22 - Sun, Mar 8

American Airlines flights from St. Louis to Japan

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

American Airlines

Jan 26

STL3:37 pmLambert-St Louis

22h 28m

2 stops

HND5:05 amTokyo Haneda

Feb 4

HND8:25 pmTokyo Haneda

18h 34m

1 stop

STL11:59 pmLambert-St Louis

$750

American Airlines

Feb 3

STL7:04 amLambert-St Louis

21h 16m

2 stops

ITM7:20 pmOsaka Itami

Feb 19

ITM3:25 pmOsaka Itami

19h 04m

2 stops

STL7:29 pmLambert-St Louis

$756

American Airlines

Feb 4

STL7:04 amLambert-St Louis

22h 26m

2 stops

ITM8:30 pmOsaka Itami

Feb 11

ITM2:40 pmOsaka Itami

19h 49m

2 stops

STL7:29 pmLambert-St Louis

$757

ANA flights from St. Louis to Japan

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

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

Jan 26

STL8:05 amLambert-St Louis

22h 00m

1 stop

HND9:05 pmTokyo Haneda

Feb 4

HND10:50 amTokyo Haneda

20h 02m

1 stop

STL3:52 pmLambert-St Louis

$739

ANA

Jan 23

STL6:30 amLambert-St Louis

20h 15m

1 stop

HND5:45 pmTokyo Haneda

Jan 30

HND6:20 pmTokyo Haneda

16h 07m

1 stop

STL7:27 pmLambert-St Louis

$790

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 3/3

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 3/12

6:30 pm-1:51 pm

1 stop33h 21m

$660

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 3/2

7:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 3/12

6:30 pm-11:59 pm

1 stop19h 29m

$661

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 2/3

2:50 pm-4:00 pm

1 stop34h 10m

Tokyo Narita

Tue 2/10

6:30 pm-1:54 pm

1 stop34h 24m

$665

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 2/3

6:40 pm-4:30 pm

2 stops30h 50m

Tokyo Narita

Tue 2/10

6:45 pm-11:02 am

2 stops31h 17m

$681

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/9

4:05 pm-4:20 pm

2 stops33h 15m

Tokyo Narita

Fri 2/27

6:45 pm-10:36 am

2 stops30h 51m

$686

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 2/3

6:35 am-8:45 pm

2 stops23h 10m

Osaka Kansai Intl

Thu 2/12

9:00 am-11:23 pm

2 stops29h 23m

$764

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Fri 2/20

2:45 pm-4:40 pm

2 stops58h 55m

Osaka Kansai Intl

Fri 2/27

6:35 pm-1:14 pm

2 stops33h 39m

$807

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Thu 2/19

12:15 pm-7:25 pm

2 stops64h 10m

Okinawa Naha

Mon 3/2

3:10 pm-8:23 pm

2 stops44h 13m

$809

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Thu 2/19

6:38 am-6:50 pm

1 stop21h 12m

Osaka Kansai Intl

Thu 2/26

5:50 pm-11:59 pm

1 stop21h 09m

$860

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 2/22

7:00 am-8:05 pm

2 stops22h 05m

Osaka Itami

Sun 3/8

8:25 am-5:00 pm

2 stops23h 35m

$885

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 5% 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 30m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 30m

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 11,097 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,603 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $691	Free Cancellation	Rating 8.3 1,672 reviews	Search Japan Airlines flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,063 reviews	Search ANA flights
Delta	PriceFrom $722	Free Cancellation	Rating 7.9 8,032 reviews	Search Delta flights
United Airlines	PriceFrom $738	Free Cancellation	Rating 7.4 9,142 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.