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 12m on average. Another popular route from Japan to St. Louis is flying from Fukuoka to St. Louis, which will take roughly 48h 49m. Keep in mind that layovers or delays could extend your travel time.

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

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

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 January 2026, 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.

$343 Cheap Flights from Japan to St. Louis in 2026

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Find the cheapest flights from Japan to St. Louis

Round-trip

One-way

Last minute

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

Enter your travel dates to find the best prices.

8:00 pm - 8:37 pm

HND

STL

15h 37m

1 stop

6:57 pm - 3:20 pm

STL

HND

29h 23m

2 stops

$644Delta

jue., feb. 5 - lun., feb. 9

4:25 pm - 4:37 pm

HND

STL

15h 12m

1 stop

6:57 pm - 3:20 pm

STL

HND

29h 23m

2 stops

$647Delta

jue., feb. 5 - lun., feb. 9

5:20 pm - 4:45 pm

HND

STL

14h 25m

1 stop

6:57 pm - 3:20 pm

STL

HND

29h 23m

2 stops

$656Delta

jue., feb. 5 - lun., feb. 9

7:35 am - 1:51 pm

OKA

STL

45h 16m

2 stops

2:47 pm - 6:50 pm

STL

OKA

61h 03m

2 stops

$1,026Multiple Airlines

vie., feb. 20 - vie., feb. 27

10:15 am - 1:51 pm

OKA

STL

41h 36m

2 stops

7:00 am - 7:10 pm

STL

OKA

46h 10m

2 stops

$1,067Multiple Airlines

mar., mar. 10 - mar., mar. 17

6:10 pm - 10:45 am

HND

STL

30h 35m

2 stops

9:10 am - 3:25 pm

STL

HND

16h 15m

1 stop

$1,186United Airlines

vie., abr. 17 - dom., abr. 19

4:20 pm - 6:27 pm

HND

STL

40h 07m

2 stops

12:11 pm - 1:55 pm

STL

HND

35h 44m

2 stops

$1,195Cathay Pacific

vie., abr. 17 - dom., abr. 19

4:20 pm - 6:27 pm

HND

STL

40h 07m

2 stops

12:11 pm - 1:55 pm

STL

HND

35h 44m

2 stops

$1,198Cathay Pacific

vie., abr. 17 - dom., abr. 19

7:45 pm - 11:58 pm

HND

STL

18h 13m

1 stop

6:20 am - 3:50 pm

STL

HND

19h 30m

1 stop

$1,260Japan Airlines

dom., abr. 5 - dom., abr. 12

2:15 pm - 10:59 pm

OKA

STL

22h 44m

2 stops

6:51 am - 10:25 pm

STL

OKA

25h 34m

2 stops

$1,978United Airlines

mar., mar. 10 - mar., mar. 17

United Airlines flights from Japan to St. Louis

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

United Airlines

Apr 17

HND6:10 pmTokyo Haneda

30h 35m

2 stops

STL10:45 amLambert-St Louis

Apr 19

STL9:10 amLambert-St Louis

16h 15m

1 stop

HND3:25 pmTokyo Haneda

$1,186

United Airlines

Mar 10

OKA2:15 pmOkinawa Naha

22h 44m

2 stops

STL10:59 pmLambert-St Louis

Mar 17

STL6:51 amLambert-St Louis

25h 34m

2 stops

OKA10:25 pmOkinawa Naha

$1,978

Delta flights from Japan to St. Louis

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

Delta

Feb 5

HND8:00 pmTokyo Haneda

15h 37m

1 stop

STL8:37 pmLambert-St Louis

Feb 9

STL6:57 pmLambert-St Louis

29h 23m

2 stops

HND3:20 pmTokyo Haneda

$644

Delta

Feb 5

HND4:25 pmTokyo Haneda

15h 12m

1 stop

STL4:37 pmLambert-St Louis

Feb 9

STL6:57 pmLambert-St Louis

29h 23m

2 stops

HND3:20 pmTokyo Haneda

$647

Delta

Apr 17

HND4:35 pmTokyo Haneda

21h 50m

2 stops

STL12:25 amLambert-St Louis

Apr 19

STL7:25 amLambert-St Louis

16h 55m

1 stop

HND2:20 pmTokyo Haneda

$1,225

Fly from

Fly to

Route

Depart

Return

Price

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

jue. 2/5

8:00 pm-8:37 pm

1 stop15h 37m

Lambert-St Louis

lun. 2/9

6:57 pm-3:20 pm

2 stops29h 23m

$644

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

jue. 2/5

4:25 pm-4:37 pm

1 stop15h 12m

Lambert-St Louis

lun. 2/9

6:57 pm-3:20 pm

2 stops29h 23m

$647

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

jue. 2/5

5:20 pm-4:45 pm

1 stop14h 25m

Lambert-St Louis

lun. 2/9

6:57 pm-3:20 pm

2 stops29h 23m

$656

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

vie. 2/20

7:35 am-1:51 pm

2 stops45h 16m

Lambert-St Louis

vie. 2/27

2:47 pm-6:50 pm

2 stops61h 03m

$1,026

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

mar. 3/10

10:15 am-1:51 pm

2 stops41h 36m

Lambert-St Louis

mar. 3/17

7:00 am-7:10 pm

2 stops46h 10m

$1,067

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

vie. 4/17

6:10 pm-10:45 am

2 stops30h 35m

Lambert-St Louis

dom. 4/19

9:10 am-3:25 pm

1 stop16h 15m

$1,186

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

vie. 4/17

4:20 pm-6:27 pm

2 stops40h 07m

Lambert-St Louis

dom. 4/19

12:11 pm-1:55 pm

2 stops35h 44m

$1,195

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

vie. 4/17

4:20 pm-6:27 pm

2 stops40h 07m

Lambert-St Louis

dom. 4/19

12:11 pm-1:55 pm

2 stops35h 44m

$1,198

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

dom. 4/5

7:45 pm-11:58 pm

1 stop18h 13m

Lambert-St Louis

dom. 4/12

6:20 am-3:50 pm

1 stop19h 30m

$1,260

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

mar. 3/10

2:15 pm-10:59 pm

2 stops22h 44m

Lambert-St Louis

mar. 3/17

6:51 am-10:25 pm

2 stops25h 34m

$1,978

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

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

You could potentially save up to 22% 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

Fastest flight time	15h 12m
Direct flights	None

The fastest flight from Japan to St. Louis takes 15h 12m

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 January 2026, 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 $753	Free Cancellation	Rating 7.4 9,198 reviews		Search United Airlines flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

Florissant

O'Fallon

Fenton

Collinsville

St. Peters

Wentzville

Alton

Farmington

Clayton

Eureka

Edwardsville

Festus

Glencoe

Litchfield

Shrewsbury

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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.