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Cheap flights from Japan to St. Louis from $405

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Japan to St. Louis departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Japan to St. Louis

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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:55 pm - 12:10 pm
OKA
-
STL
29h 15m
2 stops
Multiple Airlines Logo
8:55 pm - 7:45 pm
STL
-
OKA
32h 50m
2 stops
$1,183Multiple Airlines
Thu, Jul 30 - Thu, Aug 13
Delta Logo
4:35 pm - 12:25 am
HND
-
STL
45h 50m
2 stops
Delta Logo
10:50 am - 4:15 pm
STL
-
HND
15h 25m
1 stop
$1,195Delta
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
8:55 pm - 10:35 am
OKA
-
STL
27h 40m
2 stops
Multiple Airlines Logo
5:35 pm - 10:45 am
STL
-
OKA
27h 10m
2 stops
$1,196Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
3:50 pm - 9:25 am
HND
-
STL
31h 35m
2 stops
United Airlines Logo
2:40 pm - 1:55 pm
STL
-
HND
33h 15m
2 stops
$1,222United Airlines
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
7:55 pm - 11:59 pm
OKA
-
STL
42h 04m
2 stops
Multiple Airlines Logo
4:46 pm - 6:55 pm
STL
-
OKA
36h 09m
2 stops
$1,272Multiple Airlines
Thu, Apr 23 - Wed, Apr 29
Delta Logo
4:35 pm - 12:25 am
HND
-
STL
21h 50m
2 stops
Delta Logo
6:50 pm - 1:05 pm
STL
-
HND
28h 15m
2 stops
$1,303Delta
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
3:45 pm - 7:22 pm
HND
-
STL
17h 37m
1 stop
United Airlines Logo
7:45 am - 3:25 pm
STL
-
HND
17h 40m
1 stop
$1,343United Airlines
Fri, Apr 24 - Fri, May 1
United Airlines Logo
3:45 pm - 10:56 am
HND
-
STL
33h 11m
2 stops
United Airlines Logo
7:45 am - 3:25 pm
STL
-
HND
17h 40m
1 stop
$1,350United Airlines
Fri, Apr 24 - Fri, May 1
American Airlines Logo
7:45 pm - 11:57 pm
HND
-
STL
18h 12m
1 stop
American Airlines Logo
5:20 am - 2:20 pm
STL
-
HND
19h 00m
1 stop
$1,551American Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
11:40 am - 6:29 pm
OKA
-
STL
20h 49m
2 stops
American Airlines Logo
3:33 pm - 6:25 pm
STL
-
OKA
36h 52m
2 stops
$1,738American Airlines
Wed, Sep 2 - Sun, Sep 6

United Airlines flights from Japan to St. Louis

Our best United Airlines deals on Japan to St. Louis flight tickets
United Airlines
Apr 20
HND3:50 pmTokyo Haneda
31h 35m
2 stops
STL9:25 amLambert-St Louis
Apr 27
STL2:40 pmLambert-St Louis
33h 15m
2 stops
HND1:55 pmTokyo Haneda
$1,222
United Airlines
Apr 24
HND3:45 pmTokyo Haneda
17h 37m
1 stop
STL7:22 pmLambert-St Louis
May 1
STL7:45 amLambert-St Louis
17h 40m
1 stop
HND3:25 pmTokyo Haneda
$1,343
United Airlines
Apr 24
HND3:45 pmTokyo Haneda
33h 11m
2 stops
STL10:56 amLambert-St Louis
May 1
STL7:45 amLambert-St Louis
17h 40m
1 stop
HND3:25 pmTokyo Haneda
$1,350

Japan Airlines flights from Japan to St. Louis

Our best Japan Airlines deals on Japan to St. Louis flight tickets
Japan Airlines
Aug 1
HND7:45 pmTokyo Haneda
18h 14m
1 stop
STL11:59 pmLambert-St Louis
Aug 10
STL6:30 amLambert-St Louis
19h 20m
1 stop
HND3:50 pmTokyo Haneda
$1,405
Japan Airlines
Aug 1
HND7:45 pmTokyo Haneda
18h 14m
1 stop
STL11:59 pmLambert-St Louis
Aug 10
STL7:01 amLambert-St Louis
17h 19m
1 stop
HND2:20 pmTokyo Haneda
$1,408
Japan Airlines
Aug 1
HND7:45 pmTokyo Haneda
18h 14m
1 stop
STL11:59 pmLambert-St Louis
Aug 10
STL7:01 amLambert-St Louis
18h 49m
2 stops
HND3:50 pmTokyo Haneda
$1,521

momondo Fare Finder

 
Customize your flight search to find flights from Japan to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 11, 2026.
Use the filters below to find and compare flights from Japan to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

Thu 7/30

8:55 pm-12:10 pm

2 stops29h 15m

Lambert-St Louis

Thu 8/13

8:55 pm-7:45 pm

2 stops32h 50m

$1,183

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Wed 4/22

4:35 pm-12:25 am

2 stops45h 50m

Lambert-St Louis

Wed 4/29

10:50 am-4:15 pm

1 stop15h 25m

$1,195

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

Wed 4/22

8:55 pm-10:35 am

2 stops27h 40m

Lambert-St Louis

Wed 4/29

5:35 pm-10:45 am

2 stops27h 10m

$1,196

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Mon 4/20

3:50 pm-9:25 am

2 stops31h 35m

Lambert-St Louis

Mon 4/27

2:40 pm-1:55 pm

2 stops33h 15m

$1,222

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

Thu 4/23

7:55 pm-11:59 pm

2 stops42h 04m

Lambert-St Louis

Wed 4/29

4:46 pm-6:55 pm

2 stops36h 09m

$1,272

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Wed 4/22

4:35 pm-12:25 am

2 stops21h 50m

Lambert-St Louis

Wed 4/29

6:50 pm-1:05 pm

2 stops28h 15m

$1,303
Quickest round-trip

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Fri 4/24

3:45 pm-7:22 pm

1 stop17h 37m

Lambert-St Louis

Fri 5/1

7:45 am-3:25 pm

1 stop17h 40m

$1,343

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Fri 4/24

3:45 pm-10:56 am

2 stops33h 11m

Lambert-St Louis

Fri 5/1

7:45 am-3:25 pm

1 stop17h 40m

$1,350

TokyoSt. Louis

HND - STL

HNDSTL

Tokyo Haneda

Wed 4/22

7:45 pm-11:57 pm

1 stop18h 12m

Lambert-St Louis

Wed 4/29

5:20 am-2:20 pm

1 stop19h 00m

$1,551

OkinawaSt. Louis

OKA - STL

OKASTL

Okinawa Naha

Wed 9/2

11:40 am-6:29 pm

2 stops20h 49m

Lambert-St Louis

Sun 9/6

3:33 pm-6:25 pm

2 stops36h 52m

$1,738

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

Fastest flight time

16h 44m

Direct flights

None
The fastest flight from Japan to St. Louis takes 16h 44m
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?

  • 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 AirlinesPriceFrom $753Free CancellationRating
7.4
9,414 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Fenton
Alton
Wentzville
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
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.

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