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 40% 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, Japan Airlines, and ANA 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

4:05 pm - 3:50 pm

STL

NRT

33h 45m

1 stop

5:35 pm - 8:25 pm

NRT

STL

16h 50m

1 stop

$1,059ANA

Mon, Apr 27 - Wed, May 6

8:55 am - 3:40 pm

STL

HND

16h 45m

1 stop

6:05 pm - 2:00 pm

HND

STL

33h 55m

1 stop

$1,093ANA

Tue, Sep 29 - Wed, Oct 14

9:46 am - 8:30 pm

STL

ITM

20h 44m

2 stops

7:05 am - 2:25 pm

ITM

STL

21h 20m

2 stops

$1,135Japan Airlines

Tue, Sep 15 - Tue, Sep 22

8:30 am - 7:50 pm

STL

ITM

21h 20m

2 stops

7:25 am - 2:25 pm

ITM

STL

21h 00m

2 stops

$1,161American Airlines

Tue, Sep 15 - Tue, Sep 22

8:30 am - 5:45 pm

STL

ITM

19h 15m

2 stops

8:20 am - 3:48 pm

ITM

STL

21h 28m

2 stops

$1,212Japan Airlines

Wed, Aug 5 - Fri, Aug 14

5:10 am - 5:30 pm

STL

FUK

46h 20m

3 stops

12:15 pm - 6:17 pm

FUK

STL

20h 02m

2 stops

$1,242United Airlines

Wed, Jul 29 - Wed, Aug 5

6:01 am - 5:30 pm

STL

FUK

21h 29m

2 stops

12:15 pm - 6:17 pm

FUK

STL

20h 02m

2 stops

$1,246United Airlines

Wed, Jul 29 - Wed, Aug 5

7:06 am - 8:35 pm

STL

FUK

23h 29m

2 stops

7:00 am - 3:48 pm

FUK

STL

22h 48m

2 stops

$1,366American Airlines

Wed, Jul 29 - Wed, Aug 5

ANA flights from St. Louis to Japan

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

ANA

Apr 27

STL4:05 pmLambert-St Louis

33h 45m

1 stop

NRT3:50 pmTokyo Narita

May 7

NRT5:35 pmTokyo Narita

16h 50m

1 stop

STL8:25 pmLambert-St Louis

$1,059

ANA

Sep 29

STL8:55 amLambert-St Louis

16h 45m

1 stop

HND3:40 pmTokyo Haneda

Oct 14

HND6:05 pmTokyo Haneda

33h 55m

1 stop

STL2:00 pmLambert-St Louis

$1,093

ANA

Sep 30

STL8:55 amLambert-St Louis

20h 55m

2 stops

KIX7:50 pmOsaka Kansai Intl

Oct 14

KIX6:00 pmOsaka Kansai Intl

34h 00m

1 stop

STL2:00 pmLambert-St Louis

$1,113

Air Canada flights from St. Louis to Japan

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

Air Canada

Sep 15

STL12:10 pmLambert-St Louis

38h 15m

2 stops

KIX4:25 pmOsaka Kansai Intl

Sep 22

KIX6:00 pmOsaka Kansai Intl

38h 41m

2 stops

STL6:41 pmLambert-St Louis

$947

Air Canada

Sep 15

STL8:55 amLambert-St Louis

17h 30m

1 stop

KIX4:25 pmOsaka Kansai Intl

Sep 22

KIX6:00 pmOsaka Kansai Intl

38h 41m

2 stops

STL6:41 pmLambert-St Louis

$952

Air Canada

Sep 1

STL8:55 amLambert-St Louis

16h 45m

1 stop

HND3:40 pmTokyo Haneda

Sep 10

HND6:05 pmTokyo Haneda

15h 55m

1 stop

STL8:00 pmLambert-St Louis

$1,053

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

Mon 4/27

4:05 pm-3:50 pm

1 stop33h 45m

Tokyo Narita

Wed 5/6

5:35 pm-8:25 pm

1 stop16h 50m

$1,059

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 9/29

8:55 am-3:40 pm

1 stop16h 45m

Tokyo Haneda

Wed 10/14

6:05 pm-2:00 pm

1 stop33h 55m

$1,093

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 9/15

9:46 am-8:30 pm

2 stops20h 44m

Osaka Itami

Tue 9/22

7:05 am-2:25 pm

2 stops21h 20m

$1,135

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 9/15

8:30 am-7:50 pm

2 stops21h 20m

Osaka Itami

Tue 9/22

7:25 am-2:25 pm

2 stops21h 00m

$1,161

Quickest round-trip

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Wed 8/5

8:30 am-5:45 pm

2 stops19h 15m

Osaka Itami

Fri 8/14

8:20 am-3:48 pm

2 stops21h 28m

$1,212

St. LouisFukuoka

STL - FUK

STLFUK

Lambert-St Louis

Wed 7/29

5:10 am-5:30 pm

3 stops46h 20m

Fukuoka

Wed 8/5

12:15 pm-6:17 pm

2 stops20h 02m

$1,242

St. LouisFukuoka

STL - FUK

STLFUK

Lambert-St Louis

Wed 7/29

6:01 am-5:30 pm

2 stops21h 29m

Fukuoka

Wed 8/5

12:15 pm-6:17 pm

2 stops20h 02m

$1,246

St. LouisFukuoka

STL - FUK

STLFUK

Lambert-St Louis

Wed 7/29

7:06 am-8:35 pm

2 stops23h 29m

Fukuoka

Wed 8/5

7:00 am-3:48 pm

2 stops22h 48m

$1,366

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 February is also cheap. Prices for this month can be found on momondo for an average of $773.

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

You could potentially save up to 30% 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 24m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 24m

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 11,568 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,915 reviews	Search Air Canada flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,171 reviews	Search ANA flights
Delta	PriceFrom $727	Free Cancellation	Rating 7.9 8,404 reviews	Search Delta flights
United Airlines	PriceFrom $747	Free Cancellation	Rating 7.4 9,565 reviews	Search United Airlines flights
Japan Airlines	PriceFrom $846	Free Cancellation	Rating 8.3 1,778 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.