What airlines fly to Japan?

United Airlines, Delta and Japan 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.

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

Air Canada, United 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 March 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.

$412 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.

4:05 pm - 3:25 pm

STL

NRT

33h 20m

2 stops

5:35 pm - 8:25 pm

NRT

STL

16h 50m

1 stop

$858Air Canada

Mon, Apr 27 - Tue, May 5

6:55 pm - 3:25 pm

STL

NRT

30h 30m

2 stops

5:35 pm - 8:25 pm

NRT

STL

16h 50m

1 stop

$864Air Canada

Tue, Apr 28 - Wed, May 13

4:05 pm - 3:25 pm

STL

NRT

33h 20m

2 stops

5:35 pm - 8:25 pm

NRT

STL

16h 50m

1 stop

$893ANA

Mon, Apr 27 - Wed, May 13

4:05 pm - 3:25 pm

STL

NRT

33h 20m

2 stops

5:35 pm - 12:06 pm

NRT

STL

32h 31m

2 stops

$901ANA

Mon, Apr 27 - Wed, May 13

10:00 am - 3:25 pm

STL

HND

15h 25m

1 stop

5:15 pm - 9:13 pm

HND

STL

17h 58m

1 stop

$989United Airlines

Tue, Apr 28 - Fri, May 8

6:20 am - 1:05 pm

STL

HND

16h 45m

1 stop

3:15 pm - 5:46 pm

HND

STL

16h 31m

1 stop

$991Delta

Sun, Apr 26 - Tue, May 12

2:40 pm - 1:55 pm

STL

HND

33h 15m

2 stops

10:40 am - 9:13 pm

HND

STL

24h 33m

1 stop

$994United Airlines

Sat, Apr 25 - Fri, May 8

5:59 pm - 1:05 pm

STL

HND

29h 06m

2 stops

4:20 pm - 9:09 pm

HND

STL

18h 49m

2 stops

$995Delta

Sat, Apr 25 - Wed, May 13

7:05 am - 7:50 pm

STL

ITM

22h 45m

2 stops

8:05 pm - 2:03 pm

ITM

STL

31h 58m

2 stops

$1,137Japan Airlines

Sun, Apr 19 - Sat, May 2

7:05 am - 8:35 am

STL

KIX

35h 30m

2 stops

2:50 pm - 2:03 pm

KIX

STL

37h 13m

2 stops

$1,140Japan Airlines

Sun, Apr 19 - Sat, May 2

United Airlines flights from St. Louis to Japan

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

United Airlines

Apr 28

STL10:00 amLambert-St Louis

15h 25m

1 stop

HND3:25 pmTokyo Haneda

May 8

HND5:15 pmTokyo Haneda

17h 58m

1 stop

STL9:13 pmLambert-St Louis

$989

United Airlines

Apr 25

STL2:40 pmLambert-St Louis

33h 15m

2 stops

HND1:55 pmTokyo Haneda

May 8

HND10:40 amTokyo Haneda

24h 33m

1 stop

STL9:13 pmLambert-St Louis

$994

United Airlines

Aug 19

STL5:10 amLambert-St Louis

46h 20m

3 stops

FUK5:30 pmFukuoka

Aug 26

FUK12:15 pmFukuoka

24h 45m

2 stops

STL11:00 pmLambert-St Louis

$1,042

EVA Air flights from St. Louis to Japan

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

EVA Air

May 7

STL4:46 pmLambert-St Louis

36h 09m

2 stops

OKA6:55 pmOkinawa Naha

May 14

OKA10:15 amOkinawa Naha

46h 30m

2 stops

STL6:45 pmLambert-St Louis

$1,170

EVA Air

Apr 23

STL4:46 pmLambert-St Louis

35h 34m

2 stops

FUK6:20 pmFukuoka

Apr 30

FUK7:20 pmFukuoka

42h 39m

2 stops

STL11:59 pmLambert-St Louis

$1,279

EVA Air

Sep 3

STL7:32 pmLambert-St Louis

23h 43m

2 stops

OKA9:15 amOkinawa Naha

Sep 20

OKA10:15 amOkinawa Naha

51h 44m

2 stops

STL11:59 pmLambert-St Louis

$1,291

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 4/27

4:05 pm-3:25 pm

2 stops33h 20m

Tokyo Narita

Tue 5/5

5:35 pm-8:25 pm

1 stop16h 50m

$858

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 4/28

6:55 pm-3:25 pm

2 stops30h 30m

Tokyo Narita

Wed 5/13

5:35 pm-8:25 pm

1 stop16h 50m

$864

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 4/27

4:05 pm-3:25 pm

2 stops33h 20m

Tokyo Narita

Wed 5/13

5:35 pm-8:25 pm

1 stop16h 50m

$893

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 4/27

4:05 pm-3:25 pm

2 stops33h 20m

Tokyo Narita

Wed 5/13

5:35 pm-12:06 pm

2 stops32h 31m

$901

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 4/28

10:00 am-3:25 pm

1 stop15h 25m

Tokyo Haneda

Fri 5/8

5:15 pm-9:13 pm

1 stop17h 58m

$989

Quickest round-trip

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 4/26

6:20 am-1:05 pm

1 stop16h 45m

Tokyo Haneda

Tue 5/12

3:15 pm-5:46 pm

1 stop16h 31m

$991

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 4/25

2:40 pm-1:55 pm

2 stops33h 15m

Tokyo Haneda

Fri 5/8

10:40 am-9:13 pm

1 stop24h 33m

$994

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 4/25

5:59 pm-1:05 pm

2 stops29h 06m

Tokyo Haneda

Wed 5/13

4:20 pm-9:09 pm

2 stops18h 49m

$995

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sun 4/19

7:05 am-7:50 pm

2 stops22h 45m

Osaka Itami

Sat 5/2

8:05 pm-2:03 pm

2 stops31h 58m

$1,137

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sun 4/19

7:05 am-8:35 am

2 stops35h 30m

Osaka Kansai Intl

Sat 5/2

2:50 pm-2:03 pm

2 stops37h 13m

$1,140

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 September is also cheap. Prices for this month can be found on momondo for an average of $765.

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

You could potentially save up to 17% 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 25m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 25m

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 March 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 11,415 reviews	Search American Airlines flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,800 reviews	Search Air Canada flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,120 reviews	Search ANA flights
Japan Airlines	PriceFrom $709	Free Cancellation	Rating 8.3 1,730 reviews	Search Japan Airlines flights
Delta	PriceFrom $733	Free Cancellation	Rating 7.9 8,277 reviews	Search Delta flights
United Airlines	PriceFrom $738	Free Cancellation	Rating 7.4 9,412 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.