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 36% 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?

United Airlines, ANA, and American 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 May 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.

$520 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 - 3:25 pm

STL

NRT

37h 15m

1 stop

5:50 pm - 11:57 am

NRT

STL

32h 07m

2 stops

$957Air Canada

Tue, Sep 15 - Mon, Sep 21

5:30 pm - 2:55 pm

STL

NRT

31h 25m

2 stops

5:50 pm - 11:57 am

NRT

STL

32h 07m

2 stops

$958Air Canada

Mon, Sep 7 - Mon, Sep 14

12:10 pm - 3:25 pm

STL

NRT

37h 15m

1 stop

5:50 pm - 6:41 pm

NRT

STL

38h 51m

1 stop

$960Air Canada

Tue, Sep 1 - Thu, Oct 1

6:54 pm - 2:50 pm

STL

KIX

29h 56m

2 stops

4:55 pm - 6:39 pm

KIX

STL

15h 44m

1 stop

$1,096United Airlines

Mon, Aug 24 - Fri, Aug 28

8:50 am - 7:25 pm

STL

OKA

20h 35m

2 stops

12:35 pm - 6:16 pm

OKA

STL

19h 41m

2 stops

$1,162ANA

Wed, Sep 9 - Fri, Sep 25

9:30 am - 7:25 pm

STL

OKA

19h 55m

2 stops

9:00 pm - 12:02 pm

OKA

STL

29h 02m

2 stops

$1,262ANA

Thu, Sep 3 - Sun, Sep 20

6:00 am - 8:35 am

STL

KIX

36h 35m

2 stops

6:40 am - 10:59 pm

KIX

STL

30h 19m

2 stops

$1,288Japan Airlines

Wed, Aug 5 - Fri, Aug 14

9:30 am - 7:25 pm

STL

OKA

19h 55m

2 stops

10:55 am - 3:31 pm

OKA

STL

42h 36m

3 stops

$1,289United Airlines

Mon, Aug 24 - Fri, Aug 28

6:00 am - 10:00 pm

STL

KIX

26h 00m

2 stops

5:45 pm - 10:59 pm

KIX

STL

19h 14m

1 stop

$1,293Japan Airlines

Wed, Aug 5 - Fri, Aug 14

8:48 am - 8:00 pm

STL

FUK

21h 12m

2 stops

10:35 am - 12:41 am

FUK

STL

28h 06m

2 stops

$1,564Delta

Mon, Jul 13 - Mon, Jul 20

STARLUX Airlines flights from St. Louis to Japan

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

STARLUX Airlines

Nov 25

STL3:24 pmLambert-St Louis

35h 36m

2 stops

FUK6:00 pmFukuoka

Nov 30

FUK7:10 pmFukuoka

43h 49m

2 stops

STL11:59 pmLambert-St Louis

$1,437

STARLUX Airlines

Nov 25

STL3:24 pmLambert-St Louis

35h 36m

2 stops

FUK6:00 pmFukuoka

Nov 30

FUK7:10 pmFukuoka

43h 49m

2 stops

STL11:59 pmLambert-St Louis

$1,466

Cathay Pacific flights from St. Louis to Japan

Our best Cathay Pacific deals on St. Louis to Japan flight tickets

Cathay Pacific

Nov 4

STL7:00 amLambert-St Louis

41h 20m

2 stops

FUK3:20 pmFukuoka

Nov 11

FUK2:10 pmFukuoka

48h 32m

2 stops

STL11:42 pmLambert-St Louis

$1,258

Cathay Pacific

Oct 28

STL6:30 amLambert-St Louis

42h 50m

2 stops

FUK3:20 pmFukuoka

Nov 4

FUK2:10 pmFukuoka

47h 19m

2 stops

STL10:29 pmLambert-St Louis

$1,268

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 9/15

12:10 pm-3:25 pm

1 stop37h 15m

Tokyo Narita

Mon 9/21

5:50 pm-11:57 am

2 stops32h 07m

$957

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 9/7

5:30 pm-2:55 pm

2 stops31h 25m

Tokyo Narita

Mon 9/14

5:50 pm-11:57 am

2 stops32h 07m

$958

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 9/1

12:10 pm-3:25 pm

1 stop37h 15m

Tokyo Narita

Thu 10/1

5:50 pm-6:41 pm

1 stop38h 51m

$960

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 8/24

6:54 pm-2:50 pm

2 stops29h 56m

Osaka Kansai Intl

Fri 8/28

4:55 pm-6:39 pm

1 stop15h 44m

$1,096

Quickest round-trip

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Wed 9/9

8:50 am-7:25 pm

2 stops20h 35m

Okinawa Naha

Fri 9/25

12:35 pm-6:16 pm

2 stops19h 41m

$1,162

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Thu 9/3

9:30 am-7:25 pm

2 stops19h 55m

Okinawa Naha

Sun 9/20

9:00 pm-12:02 pm

2 stops29h 02m

$1,262

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 8/5

6:00 am-8:35 am

2 stops36h 35m

Osaka Kansai Intl

Fri 8/14

6:40 am-10:59 pm

2 stops30h 19m

$1,288

St. LouisOkinawa

STL - OKA

STLOKA

Lambert-St Louis

Mon 8/24

9:30 am-7:25 pm

2 stops19h 55m

Okinawa Naha

Fri 8/28

10:55 am-3:31 pm

3 stops42h 36m

$1,289

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Wed 8/5

6:00 am-10:00 pm

2 stops26h 00m

Osaka Kansai Intl

Fri 8/14

5:45 pm-10:59 pm

1 stop19h 14m

$1,293

St. LouisFukuoka

STL - FUK

STLFUK

Lambert-St Louis

Mon 7/13

8:48 am-8:00 pm

2 stops21h 12m

Fukuoka

Mon 7/20

10:35 am-12:41 am

2 stops28h 06m

$1,564

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 March is, on average, the cheapest month to fly to Japan from St. Louis, with most prices found around $349. If you aren’t able to travel to Japan during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $383.

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

You could potentially save up to 14% 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.

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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 May 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 11,640 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 11,107 reviews	Search Air Canada flights
United Airlines	PriceFrom $708	Free Cancellation	Rating 7.4 9,768 reviews	Search United Airlines flights
Delta	PriceFrom $739	Free Cancellation	Rating 7.9 8,412 reviews	Search Delta flights
ANA	PriceFrom $777	Free Cancellation	Rating 8.3 1,219 reviews	Search ANA flights
Japan Airlines	PriceFrom $813	Free Cancellation	Rating 8.3 1,831 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.