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

Cathay Pacific and ANA 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 31% 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 August 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.

$513 Cheap Flights from St. Louis to Japan in 2026

Discover deals from 900+ travel sites with momondo.

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.

12:10 pm - 4:25 pmSTL Lambert-St Louis-KIX Osaka Kansai Intl

62h 15m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

6:00 pm - 9:21 pmKIX Osaka Kansai Intl-STL Lambert-St Louis

41h 21m2 stops Vancouver Intl Chicago O'Hare Intl

$811Air Canada

Fri, Sep 18 - Mon, Sep 28

12:10 pm - 3:25 pmSTL Lambert-St Louis-NRT Tokyo Narita

37h 15m1 stop Montreal Pierre Elliott Trudeau Intl

5:50 pm - 12:13 pmNRT Tokyo Narita-STL Lambert-St Louis

32h 23m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$812Air Canada

Sat, Sep 19 - Tue, Sep 29

8:55 am - 10:30 pmSTL Lambert-St Louis-HND Tokyo Haneda

23h 35m2 stops Toronto Pearson Intl Osaka Kansai Intl

6:05 pm - 8:20 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 15m1 stop Toronto Pearson Intl

$849Multiple Airlines

Tue, Sep 15 - Mon, Sep 21

8:55 am - 10:30 pmSTL Lambert-St Louis-HND Tokyo Haneda

23h 35m2 stops Toronto Pearson Intl Osaka Kansai Intl

6:05 pm - 6:41 pmHND Tokyo Haneda-STL Lambert-St Louis

38h 36m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$869Multiple Airlines

Tue, Sep 15 - Mon, Sep 21

12:10 pm - 3:25 pmSTL Lambert-St Louis-NRT Tokyo Narita

37h 15m1 stop Montreal Pierre Elliott Trudeau Intl

5:50 pm - 8:20 pmNRT Tokyo Narita-STL Lambert-St Louis

16h 30m1 stop Toronto Pearson Intl

$880ANA

Sat, Sep 19 - Tue, Sep 29

4:05 pm - 4:30 pmSTL Lambert-St Louis-NRT Tokyo Narita

33h 25m1 stop Toronto Pearson Intl

6:45 pm - 3:26 pmNRT Tokyo Narita-STL Lambert-St Louis

35h 41m1 stop Toronto Pearson Intl

$898ANA

Sun, Feb 7 - Fri, Feb 19

8:36 am - 3:00 pmSTL Lambert-St Louis-NRT Tokyo Narita

16h 24m1 stop San Francisco

5:05 pm - 6:43 pmNRT Tokyo Narita-STL Lambert-St Louis

15h 38m1 stop San Francisco

$1,051United Airlines

Sun, Sep 20 - Fri, Oct 2

8:42 am - 3:00 pmSTL Lambert-St Louis-NRT Tokyo Narita

16h 18m1 stop San Francisco

5:05 pm - 6:43 pmNRT Tokyo Narita-STL Lambert-St Louis

15h 38m1 stop San Francisco

$1,051United Airlines

Mon, Sep 21 - Fri, Oct 2

10:29 am - 4:15 pmSTL Lambert-St Louis-HND Tokyo Haneda

15h 46m1 stop Detroit Metropolitan Wayne County

4:20 pm - 11:16 pmHND Tokyo Haneda-STL Lambert-St Louis

20h 56m2 stops Seattle/Tacoma Intl Minneapolis St Paul

$1,070Delta

Mon, Sep 21 - Tue, Sep 29

5:59 pm - 1:05 pmSTL Lambert-St Louis-HND Tokyo Haneda

29h 06m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

4:35 pm - 12:44 amHND Tokyo Haneda-STL Lambert-St Louis

22h 09m2 stops Los Angeles Salt Lake City

$1,070Delta

Sun, Sep 20 - Wed, Sep 30

Cheap last minute flights

Enter your travel dates to find the best prices.

12:10 pm - 3:25 pmSTL Lambert-St Louis-NRT Tokyo Narita

37h 15m1 stop Montreal Pierre Elliott Trudeau Intl

5:50 pm - 12:03 pmNRT Tokyo Narita-STL Lambert-St Louis

32h 13m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$812Air Canada

Wed, Sep 2 - Fri, Sep 11

6:00 am - 2:55 pmSTL Lambert-St Louis-NRT Tokyo Narita

18h 55m2 stops Chicago O'Hare Intl Vancouver Intl

5:50 pm - 12:03 pmNRT Tokyo Narita-STL Lambert-St Louis

32h 13m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$813Air Canada

Wed, Sep 2 - Fri, Sep 11

5:42 am - 2:20 pmSTL Lambert-St Louis-HND Tokyo Haneda

18h 38m1 stop Dallas/Fort Worth

4:30 pm - 7:07 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 37m1 stop Dallas/Fort Worth

$1,050American Airlines

Wed, Sep 2 - Fri, Sep 11

6:00 am - 4:15 pmSTL Lambert-St Louis-HND Tokyo Haneda

20h 15m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

4:05 pm - 8:35 pmHND Tokyo Haneda-STL Lambert-St Louis

18h 30m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County

$1,070Delta

Wed, Sep 2 - Fri, Sep 11

7:00 am - 4:15 pmSTL Lambert-St Louis-HND Tokyo Haneda

19h 15m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

3:15 pm - 11:42 pmHND Tokyo Haneda-STL Lambert-St Louis

22h 27m1 stop Atlanta Hartsfield-Jackson

$1,070Delta

Wed, Sep 2 - Fri, Sep 11

6:00 am - 3:50 pmSTL Lambert-St Louis-HND Tokyo Haneda

19h 50m1 stop Los Angeles

4:30 pm - 7:07 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 37m1 stop Dallas/Fort Worth

$1,100American Airlines

Thu, Sep 3 - Fri, Sep 11

8:30 am - 3:25 pmSTL Lambert-St Louis-HND Tokyo Haneda

16h 55m1 stop Chicago O'Hare Intl

5:15 pm - 9:17 pmHND Tokyo Haneda-STL Lambert-St Louis

18h 02m1 stop Chicago O'Hare Intl

$1,145ANA

Thu, Sep 3 - Sat, Sep 5

5:10 am - 1:55 pmSTL Lambert-St Louis-HND Tokyo Haneda

18h 45m2 stops Denver Intl San Francisco

5:15 pm - 7:16 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 01m1 stop Chicago O'Hare Intl

$1,151United Airlines

Thu, Sep 3 - Sat, Sep 5

5:10 am - 3:05 pmSTL Lambert-St Louis-HND Tokyo Haneda

19h 55m2 stops Denver Intl Los Angeles

3:50 pm - 11:40 pmHND Tokyo Haneda-STL Lambert-St Louis

21h 50m2 stops San Francisco Denver Intl

$1,155United Airlines

Thu, Sep 3 - Sat, Sep 5

12:10 pm - 3:25 pmSTL Lambert-St Louis-NRT Tokyo Narita

37h 15m1 stop Montreal Pierre Elliott Trudeau Intl

5:50 pm - 8:20 pmNRT Tokyo Narita-STL Lambert-St Louis

16h 30m1 stop Toronto Pearson Intl

$5,230ANA

Sat, Sep 5 - Sat, Sep 19

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Qatar Airways flights from St. Louis to Japan

Our best Qatar Airways deals on St. Louis to Japan flight tickets

Qatar Airways

Oct 14

STL11:21 amLambert-St Louis

54h 54m

3 stops

FUK8:15 amFukuoka

Oct 21

FUK2:00 pmFukuoka

38h 30m

3 stops

STL2:30 pmLambert-St Louis

$2,432

Qatar Airways

Sep 3

STL11:22 amLambert-St Louis

55h 38m

3 stops

OKA9:00 amOkinawa Naha

Sep 20

OKA6:50 pmOkinawa Naha

43h 09m

3 stops

STL11:59 pmLambert-St Louis

$2,629

ANA flights from St. Louis to Japan

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

ANA

Sep 19

STL12:10 pmLambert-St Louis

37h 15m

1 stop

NRT3:25 pmTokyo Narita

Sep 29

NRT5:50 pmTokyo Narita

16h 30m

1 stop

STL8:20 pmLambert-St Louis

$880

ANA

Feb 7

STL4:05 pmLambert-St Louis

33h 35m

1 stop

HND4:40 pmTokyo Haneda

Feb 19

HND6:50 pmTokyo Haneda

35h 36m

1 stop

STL3:26 pmLambert-St Louis

$1,087

ANA

Sep 15

STL12:59 pmLambert-St Louis

28h 26m

2 stops

ITM7:25 amOsaka Itami

Sep 22

ITM5:40 pmOsaka Itami

32h 17m

2 stops

STL11:57 amLambert-St Louis

$1,098

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisOsaka

STL Lambert-St Louis - KIX Osaka Kansai Intl

STLKIX

Lambert-St Louis

Fri 9/18

12:10 pm-4:25 pm

2 stops62h 15m

Osaka Kansai Intl

Mon 9/28

6:00 pm-9:21 pm

2 stops41h 21m

$811

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Sat 9/19

12:10 pm-3:25 pm

1 stop37h 15m

Tokyo Narita

Tue 9/29

5:50 pm-12:13 pm

2 stops32h 23m

$812

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 9/15

8:55 am-10:30 pm

2 stops23h 35m

Tokyo Haneda

Mon 9/21

6:05 pm-8:20 pm

1 stop16h 15m

$849

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 9/15

8:55 am-10:30 pm

2 stops23h 35m

Tokyo Haneda

Mon 9/21

6:05 pm-6:41 pm

2 stops38h 36m

$869

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Sat 9/19

12:10 pm-3:25 pm

1 stop37h 15m

Tokyo Narita

Tue 9/29

5:50 pm-8:20 pm

1 stop16h 30m

$880

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Sun 2/7

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

Fri 2/19

6:45 pm-3:26 pm

1 stop35h 41m

$898

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Sun 9/20

8:36 am-3:00 pm

1 stop16h 24m

Tokyo Narita

Fri 10/2

5:05 pm-6:43 pm

1 stop15h 38m

$1,051

Quickest round-trip

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Mon 9/21

8:42 am-3:00 pm

1 stop16h 18m

Tokyo Narita

Fri 10/2

5:05 pm-6:43 pm

1 stop15h 38m

$1,051

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Mon 9/21

10:29 am-4:15 pm

1 stop15h 46m

Tokyo Haneda

Tue 9/29

4:20 pm-11:16 pm

2 stops20h 56m

$1,070

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Sun 9/20

5:59 pm-1:05 pm

2 stops29h 06m

Tokyo Haneda

Wed 9/30

4:35 pm-12:44 am

2 stops22h 09m

$1,070

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 February is, on average, the cheapest month to fly to Japan from St. Louis, with most prices found around $849. If you aren’t able to travel to Japan during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $898.

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

You could potentially save up to 15% 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

Best Price Found	$513
Fastest flight time	15h 30m
Direct flights	None

The best one-way flight to Japan from St. Louis in the past 72 hours is $513. The best round-trip flight deal from St. Louis to Japan found on momondo in the last 72 hours is $811.

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

Frequently asked questions about flying from 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 August 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 $633	Free Cancellation	Rating 7.1 12,019 reviews	Search American Airlines flights
Air Canada	PriceFrom $667	Free Cancellation	Rating 7.1 11,560 reviews	Search Air Canada flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 10,145 reviews	Search United Airlines flights
Delta	PriceFrom $739	Free Cancellation	Rating 7.8 8,533 reviews	Search Delta flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.3 1,308 reviews	Search ANA flights
Japan Airlines	PriceFrom $846	Free Cancellation	Rating 8.3 1,911 reviews	Search Japan 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.