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 38% 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, Delta, 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 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.

$400 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

$1,009Air Canada

Tue, Sep 15 - Tue, Sep 22

12:10 pm - 4:25 pm

STL

KIX

38h 15m

2 stops

6:00 pm - 6:41 pm

KIX

STL

38h 41m

2 stops

$1,010Air Canada

Tue, Sep 15 - Tue, Sep 22

9:16 am - 6:10 pm

STL

ITM

18h 54m

2 stops

7:05 am - 12:13 pm

ITM

STL

19h 08m

2 stops

$1,142ANA

Tue, Sep 15 - Tue, Sep 22

9:16 am - 8:15 pm

STL

ITM

20h 59m

2 stops

7:05 am - 12:13 pm

ITM

STL

19h 08m

2 stops

$1,143ANA

Tue, Sep 15 - Tue, Sep 22

5:10 am - 7:00 pm

STL

HND

23h 50m

2 stops

10:25 am - 2:08 pm

HND

STL

17h 43m

1 stop

$1,147United Airlines

Tue, Sep 8 - Wed, Sep 23

5:10 am - 7:00 pm

STL

HND

23h 50m

2 stops

10:55 pm - 10:09 am

HND

STL

25h 14m

2 stops

$1,151United Airlines

Wed, Sep 9 - Fri, Sep 18

10:45 am - 4:15 pm

STL

HND

15h 30m

1 stop

4:20 pm - 11:01 pm

HND

STL

20h 41m

1 stop

$1,152Delta

Wed, Sep 9 - Fri, Sep 18

10:45 am - 4:15 pm

STL

HND

15h 30m

1 stop

4:35 pm - 8:49 pm

HND

STL

18h 14m

1 stop

$1,153Delta

Tue, Sep 22 - Wed, Oct 7

9:46 am - 8:30 pm

STL

ITM

20h 44m

2 stops

2:35 pm - 2:25 pm

ITM

STL

37h 50m

2 stops

$1,171Japan Airlines

Tue, Sep 15 - Tue, Sep 22

7:23 am - 5:30 pm

STL

HND

20h 07m

1 stop

12:35 pm - 11:02 pm

HND

STL

24h 27m

2 stops

$1,177Japan Airlines

Mon, Sep 7 - Mon, Sep 14

Delta flights from St. Louis to Japan

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

Delta

Sep 9

STL10:45 amLambert-St Louis

15h 30m

1 stop

HND4:15 pmTokyo Haneda

Sep 18

HND4:20 pmTokyo Haneda

20h 41m

1 stop

STL11:01 pmLambert-St Louis

$1,152

Delta

Sep 22

STL10:45 amLambert-St Louis

15h 30m

1 stop

HND4:15 pmTokyo Haneda

Oct 7

HND4:35 pmTokyo Haneda

18h 14m

1 stop

STL8:49 pmLambert-St Louis

$1,153

Delta

Sep 7

STL6:00 amLambert-St Louis

25h 05m

2 stops

NRT9:05 pmTokyo Narita

Sep 14

NRT8:55 pmTokyo Narita

30h 22m

2 stops

STL1:17 pmLambert-St Louis

$1,166

ANA flights from St. Louis to Japan

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

ANA

Sep 15

STL9:16 amLambert-St Louis

18h 54m

2 stops

ITM6:10 pmOsaka Itami

Sep 22

ITM7:05 amOsaka Itami

19h 08m

2 stops

STL12:13 pmLambert-St Louis

$1,142

ANA

Sep 15

STL9:16 amLambert-St Louis

20h 59m

2 stops

ITM8:15 pmOsaka Itami

Sep 22

ITM7:05 amOsaka Itami

19h 08m

2 stops

STL12:13 pmLambert-St Louis

$1,143

ANA

Sep 5

STL3:10 pmLambert-St Louis

42h 05m

2 stops

OKA11:15 pmOkinawa Naha

Sep 16

OKA12:35 pmOkinawa Naha

19h 41m

2 stops

STL6:16 pmLambert-St Louis

$1,147

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

$1,009

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

$1,010

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 9/15

9:16 am-6:10 pm

2 stops18h 54m

Osaka Itami

Tue 9/22

7:05 am-12:13 pm

2 stops19h 08m

$1,142

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 9/15

9:16 am-8:15 pm

2 stops20h 59m

Osaka Itami

Tue 9/22

7:05 am-12:13 pm

2 stops19h 08m

$1,143

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 9/8

5:10 am-7:00 pm

2 stops23h 50m

Tokyo Haneda

Wed 9/23

10:25 am-2:08 pm

1 stop17h 43m

$1,147

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 9/9

5:10 am-7:00 pm

2 stops23h 50m

Tokyo Haneda

Fri 9/18

10:55 pm-10:09 am

2 stops25h 14m

$1,151

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 9/9

10:45 am-4:15 pm

1 stop15h 30m

Tokyo Haneda

Fri 9/18

4:20 pm-11:01 pm

1 stop20h 41m

$1,152

Quickest round-trip

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 9/22

10:45 am-4:15 pm

1 stop15h 30m

Tokyo Haneda

Wed 10/7

4:35 pm-8:49 pm

1 stop18h 14m

$1,153

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

2:35 pm-2:25 pm

2 stops37h 50m

$1,171

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 9/7

7:23 am-5:30 pm

1 stop20h 07m

Tokyo Haneda

Mon 9/14

12:35 pm-11:02 pm

2 stops24h 27m

$1,177

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 37% 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 11,623 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,943 reviews	Search Air Canada flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,183 reviews	Search ANA flights
Delta	PriceFrom $727	Free Cancellation	Rating 7.9 8,421 reviews	Search Delta flights
United Airlines	PriceFrom $747	Free Cancellation	Rating 7.4 9,607 reviews	Search United Airlines flights
Japan Airlines	PriceFrom $846	Free Cancellation	Rating 8.3 1,784 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.