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

Delta, United Airlines, and American Airlines are the most popular carriers operating from Japan to Lambert-St Louis

How long does it take to fly to St. Louis?

Flight times from Japan to St. Louis vary, but if you’re flying out of Tokyo and flying into St. Louis (one of the most popular routes), then the duration is 15h 30m on average. Another popular route from Japan to St. Louis is flying from Fukuoka to St. Louis, which will take roughly 23h 01m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Japan to Lambert-St Louis Airport?

Prices for flights from Japan to Lambert-St Louis Airport refresh daily.

How many operators does momondo search for flights from Japan to Lambert-St Louis Airport?

As of October 2025, there is 1 operator available to choose from for flights from Japan to Lambert-St Louis Airport.

How old do you have to be to fly from Japan to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Japan to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$436 Cheap Flights from Japan to St. Louis in 2025/26

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Find the cheapest flights from Japan to St. Louis

Round-trip

One-way

Recent round-trip flight deals from Japan to St. Louis

Enter your travel dates to find the best prices.

6:50 pm - 3:29 pmHND-STL

35h 39m1 stop

7:41 am - 5:45 pmSTL-HND

19h 04m1 stop

$839Multiple Airlines

Find Deal

Tue, Jan 20 - Thu, Feb 19

4:50 pm - 9:38 pmHND-STL

19h 48m2 stops

6:00 am - 5:45 pmSTL-HND

20h 45m2 stops

$855Delta

Find Deal

Tue, Jan 20 - Thu, Feb 19

7:40 pm - 10:22 pmHND-STL

17h 42m2 stops

8:05 am - 5:45 pmSTL-HND

18h 40m1 stop

$859United Airlines

Find Deal

Fri, Dec 19 - Thu, Jan 1

7:40 pm - 10:43 pmHND-STL

18h 03m2 stops

6:35 pm - 5:45 pmSTL-HND

32h 10m1 stop

$885United Airlines

Find Deal

Sat, Dec 20 - Sat, Jan 3

2:20 pm - 3:29 pmFUK-STL

40h 09m2 stops

4:05 pm - 8:05 pmSTL-FUK

37h 00m2 stops

$1,110Air Canada

Find Deal

Thu, Feb 19 - Sun, Feb 22

3:25 pm - 3:29 pmFUK-STL

39h 04m2 stops

4:05 pm - 8:55 pmSTL-FUK

37h 50m2 stops

$1,111Air Canada

Find Deal

Thu, Feb 19 - Sun, Feb 22

8:25 pm - 11:49 pmHND-STL

18h 24m2 stops

2:43 pm - 5:05 amSTL-HND

23h 22m2 stops

$1,297American Airlines

Find Deal

Fri, Dec 19 - Thu, Jan 1

1:05 pm - 7:30 pmHND-STL

21h 25m2 stops

2:43 pm - 5:05 amSTL-HND

23h 22m2 stops

$1,304American Airlines

Find Deal

Fri, Dec 19 - Thu, Jan 1

1:00 am - 4:14 pmHND-STL

30h 14m2 stops

2:00 pm - 7:35 amSTL-HND

26h 35m2 stops

$1,701British Airways

Find Deal

Mon, Jan 19 - Thu, Feb 19

1:00 am - 8:21 pmHND-STL

34h 21m2 stops

1:54 pm - 7:35 amSTL-HND

26h 41m2 stops

$2,391British Airways

Find Deal

Sat, Dec 13 - Sun, Dec 21

Air Canada flights from Japan to St. Louis

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

Air Canada

Feb 19

FUK2:20 pmFukuoka

40h 09m

2 stops

STL3:29 pmLambert-St Louis

Feb 22

STL4:05 pmLambert-St Louis

37h 00m

2 stops

FUK8:05 pmFukuoka

$1,110

Find similar

Air Canada

Feb 19

FUK3:25 pmFukuoka

39h 04m

2 stops

STL3:29 pmLambert-St Louis

Feb 22

STL4:05 pmLambert-St Louis

37h 50m

2 stops

FUK8:55 pmFukuoka

$1,111

Find similar

Air Canada

Nov 12

HND6:50 pmTokyo Haneda

35h 39m

1 stop

STL3:29 pmLambert-St Louis

Nov 26

STL4:05 pmLambert-St Louis

33h 35m

1 stop

HND4:40 pmTokyo Haneda

$1,188

Find similar

United Airlines flights from Japan to St. Louis

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

United Airlines

Dec 19

HND7:40 pmTokyo Haneda

17h 42m

2 stops

STL10:22 pmLambert-St Louis

Jan 1

STL8:05 amLambert-St Louis

18h 40m

1 stop

HND5:45 pmTokyo Haneda

$859

Find similar

United Airlines

Dec 20

HND7:40 pmTokyo Haneda

18h 03m

2 stops

STL10:43 pmLambert-St Louis

Jan 3

STL6:35 pmLambert-St Louis

32h 10m

1 stop

HND5:45 pmTokyo Haneda

$885

Find similar

United Airlines

Dec 20

HND6:20 pmTokyo Haneda

15h 58m

1 stop

STL7:18 pmLambert-St Louis

Mar 18

STL5:00 amLambert-St Louis

22h 45m

1 stop

HND5:45 pmTokyo Haneda

$890

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Tue 1/20

6:50 pm-3:29 pm

1 stop35h 39m

Lambert-St Louis

Thu 2/19

7:41 am-5:45 pm

1 stop19h 04m

$839

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Tue 1/20

4:50 pm-9:38 pm

2 stops19h 48m

Lambert-St Louis

Thu 2/19

6:00 am-5:45 pm

2 stops20h 45m

$855

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Fri 12/19

7:40 pm-10:22 pm

2 stops17h 42m

Lambert-St Louis

Thu 1/1

8:05 am-5:45 pm

1 stop18h 40m

$859

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Sat 12/20

7:40 pm-10:43 pm

2 stops18h 03m

Lambert-St Louis

Sat 1/3

6:35 pm-5:45 pm

1 stop32h 10m

$885

FukuokaSt. Louis

FUK - STL

FUKSTL

Fukuoka

Thu 2/19

2:20 pm-3:29 pm

2 stops40h 09m

Lambert-St Louis

Sun 2/22

4:05 pm-8:05 pm

2 stops37h 00m

$1,110

FukuokaSt. Louis

FUK - STL

FUKSTL

Fukuoka

Thu 2/19

3:25 pm-3:29 pm

2 stops39h 04m

Lambert-St Louis

Sun 2/22

4:05 pm-8:55 pm

2 stops37h 50m

$1,111

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Fri 12/19

8:25 pm-11:49 pm

2 stops18h 24m

Lambert-St Louis

Thu 1/1

2:43 pm-5:05 am

2 stops23h 22m

$1,297

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Fri 12/19

1:05 pm-7:30 pm

2 stops21h 25m

Lambert-St Louis

Thu 1/1

2:43 pm-5:05 am

2 stops23h 22m

$1,304

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Mon 1/19

1:00 am-4:14 pm

2 stops30h 14m

Lambert-St Louis

Thu 2/19

2:00 pm-7:35 am

2 stops26h 35m

$1,701

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Sat 12/13

1:00 am-8:21 pm

2 stops34h 21m

Lambert-St Louis

Sun 12/21

1:54 pm-7:35 am

2 stops26h 41m

$2,391

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 Japan to St. Louis

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

Other information

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Monday when prices can be found for as low as $804. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,647. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Japan in the evening is the least expensive time of day to depart. momondo users have found prices as low as $984 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,258 per ticket.

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

You could potentially save up to 25% on your flight if you consider stops on a Japan to St. Louis flight.

Cheap Japan to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Japan to St. Louis

Direct flights	None

There are no direct flights from Japan to St. Louis. There are no popular flight routes from Japan to St. Louis.

Search flight deals

When did momondo last update prices for flights from Japan to Lambert-St Louis Airport?
Prices for flights from Japan to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Japan to Lambert-St Louis Airport?
As of October 2025, there is 1 operator available to choose from for flights from Japan to Lambert-St Louis Airport.
How old do you have to be to fly from Japan to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Japan to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Japan to St. Louis

Compare and see reviews for airlines that fly from Japan to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $787	Free Cancellation	Rating 7.4 8,998 reviews		Search United Airlines flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

Florissant

O'Fallon

Wentzville

Fenton

Collinsville

St. Peters

Alton

Farmington

Festus

Glencoe

Edwardsville

Clayton

Eureka

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Japan to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Japan to St. Louis for you.

Can I find flights from Japan to St. Louis with flexible booking policies on momondo?

Flights from Japan to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Japan to St. Louis?

momondo helps you find the best flight between Japan and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Japan to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Japan to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.