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

Air Canada, ANA, and American Airlines are the most popular carriers operating from Lambert-St Louis to Japan

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.

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 December 2025.

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.

$328 Cheap Flights from St. Louis to Japan in 2025/26

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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 - 4:30 pm

STL

NRT

33h 25m1 stop

6:15 pm - 9:05 pm

NRT

STL

41h 50m2 stops

$622Air Canada

Wed, Feb 11 - Tue, Feb 17

6:40 pm - 4:30 pm

STL

NRT

30h 50m2 stops

6:15 pm - 9:05 pm

NRT

STL

41h 50m2 stops

$626Air Canada

Wed, Feb 11 - Tue, Feb 17

6:45 pm - 4:40 pm

STL

HND

30h 55m2 stops

6:50 pm - 3:29 pm

HND

STL

35h 39m1 stop

$640Air Canada

Sun, Feb 15 - Wed, Feb 25

4:05 pm - 4:30 pm

STL

NRT

33h 25m1 stop

6:15 pm - 3:29 pm

NRT

STL

36h 14m2 stops

$641Air Canada

Sun, Feb 15 - Wed, Feb 25

6:30 am - 5:45 pm

STL

HND

20h 15m1 stop

6:20 pm - 9:05 pm

HND

STL

17h 45m1 stop

$697United Airlines

Mon, Feb 9 - Fri, Feb 27

8:30 am - 4:50 pm

STL

HND

17h 20m1 stop

6:25 pm - 11:51 pm

HND

STL

19h 26m1 stop

$698United Airlines

Sat, Feb 28 - Tue, Mar 10

6:35 am - 5:45 pm

STL

HND

20h 10m1 stop

5:20 pm - 11:23 pm

HND

STL

21h 03m1 stop

$699Delta

Wed, Feb 18 - Sat, Feb 28

6:00 am - 6:30 pm

STL

HND

21h 30m2 stops

5:55 pm - 10:54 pm

HND

STL

19h 59m1 stop

$701American Airlines

Mon, Feb 23 - Thu, Mar 5

7:04 am - 9:40 pm

STL

TAK

23h 36m2 stops

9:50 am - 11:59 pm

TAK

STL

29h 09m2 stops

$1,208Japan Airlines

Thu, Jan 29 - Mon, Feb 2

1:35 pm - 12:45 pm

STL

TAK

32h 10m2 stops

11:20 am - 11:59 pm

TAK

STL

27h 39m2 stops

$1,314Japan Airlines

Thu, Jan 29 - Mon, Feb 2

ANA flights from St. Louis to Japan

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

ANA

Feb 23

STL8:17 amLambert-St Louis

18h 28m

1 stop

HND5:45 pmTokyo Haneda

Mar 5

HND6:20 pmTokyo Haneda

15h 54m

1 stop

STL7:14 pmLambert-St Louis

$690

Find similar

ANA

Jan 26

STL6:30 amLambert-St Louis

24h 10m

2 stops

FUK9:40 pmFukuoka

Feb 2

FUK9:05 pmFukuoka

33h 47m

2 stops

STL3:52 pmLambert-St Louis

$746

Find similar

ANA

Feb 3

STL6:30 amLambert-St Louis

34h 00m

2 stops

ITM7:30 amOsaka Itami

Feb 19

ITM7:30 amOsaka Itami

19h 55m

2 stops

STL12:25 pmLambert-St Louis

$759

Find similar

American Airlines flights from St. Louis to Japan

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

American Airlines

Feb 23

STL5:14 amLambert-St Louis

19h 16m

1 stop

NRT3:30 pmTokyo Narita

Mar 5

NRT5:30 pmTokyo Narita

20h 24m

1 stop

STL10:54 pmLambert-St Louis

$698

Find similar

American Airlines

Feb 23

STL6:30 amLambert-St Louis

17h 35m

1 stop

HND3:05 pmTokyo Haneda

Mar 5

HND8:25 pmTokyo Haneda

18h 40m

2 stops

STL12:05 amLambert-St Louis

$701

Find similar

American Airlines

Feb 3

STL7:04 amLambert-St Louis

20h 41m

2 stops

ITM6:45 pmOsaka Itami

Feb 19

ITM3:25 pmOsaka Itami

19h 00m

2 stops

STL7:25 pmLambert-St Louis

$762

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 2/11

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

Tue 2/17

6:15 pm-9:05 pm

2 stops41h 50m

$622

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Wed 2/11

6:40 pm-4:30 pm

2 stops30h 50m

Tokyo Narita

Tue 2/17

6:15 pm-9:05 pm

2 stops41h 50m

$626

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/15

6:45 pm-4:40 pm

2 stops30h 55m

Tokyo Haneda

Wed 2/25

6:50 pm-3:29 pm

1 stop35h 39m

$640

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 2/15

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

Wed 2/25

6:15 pm-3:29 pm

2 stops36h 14m

$641

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 2/9

6:30 am-5:45 pm

1 stop20h 15m

Tokyo Haneda

Fri 2/27

6:20 pm-9:05 pm

1 stop17h 45m

$697

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sat 2/28

8:30 am-4:50 pm

1 stop17h 20m

Tokyo Haneda

Tue 3/10

6:25 pm-11:51 pm

1 stop19h 26m

$698

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Wed 2/18

6:35 am-5:45 pm

1 stop20h 10m

Tokyo Haneda

Sat 2/28

5:20 pm-11:23 pm

1 stop21h 03m

$699

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 2/23

6:00 am-6:30 pm

2 stops21h 30m

Tokyo Haneda

Thu 3/5

5:55 pm-10:54 pm

1 stop19h 59m

$701

St. LouisTakamatsu

STL - TAK

STLTAK

Lambert-St Louis

Thu 1/29

7:04 am-9:40 pm

2 stops23h 36m

Takamatsu

Mon 2/2

9:50 am-11:59 pm

2 stops29h 09m

$1,208

St. LouisTakamatsu

STL - TAK

STLTAK

Lambert-St Louis

Thu 1/29

1:35 pm-12:45 pm

2 stops32h 10m

Takamatsu

Mon 2/2

11:20 am-11:59 pm

2 stops27h 39m

$1,314

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 $738. 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 $791.

What is the cheapest day to depart on your flight to Japan?

On average, the least expensive day to fly to Japan from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,209. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to Japan on a Friday will generally be more expensive and average around $1,457. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Japan?

Flying to Japan from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,103 when looking at flights departing at noon. In the morning is when there is more demand to fly to Japan, so prices are often more expensive at around $1,308 per ticket.

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

You could potentially save up to 22% 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 December 2025.
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
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,522 reviews	Search Air Canada flights
American Airlines	PriceFrom $633	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights
Japan Airlines	PriceFrom $691	Free Cancellation	Rating 8.3 1,655 reviews	Search Japan Airlines flights
ANA	PriceFrom $703	Free Cancellation	Rating 8.4 1,023 reviews	Search ANA flights
United Airlines	PriceFrom $716	Free Cancellation	Rating 7.4 9,093 reviews	Search United Airlines flights
Delta	PriceFrom $722	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta 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.