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

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

What airlines fly to Japan?

United Airlines, ANA and Delta 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 32% 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 September 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.

$405 Cheap Flights from St. Louis to Japan in 2026/27

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.

4:05 pm - 4:40 pmSTL Lambert-St Louis-NRT Tokyo Narita

57h 35m2 stops Toronto Pearson Intl Vancouver Intl

6:45 pm - 3:41 pmNRT Tokyo Narita-STL Lambert-St Louis

35h 56m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$918Air Canada

Mon, Feb 1 - Wed, Feb 17

4:05 pm - 4:40 pmSTL Lambert-St Louis-NRT Tokyo Narita

33h 35m2 stops Toronto Pearson Intl Vancouver Intl

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

35h 41m1 stop Toronto Pearson Intl

$921Air Canada

Mon, Feb 1 - Wed, Feb 17

8:05 am - 5:45 pmSTL Lambert-St Louis-HND Tokyo Haneda

18h 40m1 stop Chicago O'Hare Intl

6:20 pm - 6:08 pmHND Tokyo Haneda-STL Lambert-St Louis

14h 48m1 stop Chicago O'Hare Intl

$1,030ANA

Mon, Jan 25 - Mon, Feb 8

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

33h 25m1 stop Toronto Pearson Intl

5:25 pm - 3:26 pmNRT Tokyo Narita-STL Lambert-St Louis

36h 01m1 stop Toronto Pearson Intl

$1,036ANA

Wed, Jan 27 - Tue, Apr 27

5:25 am - 3:15 pmSTL Lambert-St Louis-NRT Tokyo Narita

18h 50m1 stop Chicago O'Hare Intl

6:00 pm - 6:08 pmNRT Tokyo Narita-STL Lambert-St Louis

15h 08m1 stop Chicago O'Hare Intl

$1,100United Airlines

Tue, Jan 12 - Tue, Feb 2

7:18 am - 3:15 pmSTL Lambert-St Louis-NRT Tokyo Narita

16h 57m1 stop Chicago O'Hare Intl

5:30 pm - 8:59 pmNRT Tokyo Narita-STL Lambert-St Louis

18h 29m2 stops Los Angeles Denver Intl

$1,100United Airlines

Tue, Dec 29 - Wed, Jan 13

6:30 am - 2:35 pmSTL Lambert-St Louis-HND Tokyo Haneda

17h 05m1 stop Minneapolis St Paul

5:20 pm - 4:54 pmHND Tokyo Haneda-STL Lambert-St Louis

14h 34m1 stop Minneapolis St Paul

$1,100Delta

Wed, Jan 13 - Wed, Feb 3

6:30 am - 2:35 pmSTL Lambert-St Louis-HND Tokyo Haneda

17h 05m1 stop Minneapolis St Paul

5:20 pm - 4:54 pmHND Tokyo Haneda-STL Lambert-St Louis

14h 34m1 stop Minneapolis St Paul

$1,100Delta

Tue, Jan 12 - Wed, Feb 3

6:00 pm - 5:05 amSTL Lambert-St Louis-HND Tokyo Haneda

20h 05m2 stops Dallas/Fort Worth Los Angeles

8:25 pm - 11:34 pmHND Tokyo Haneda-STL Lambert-St Louis

18h 09m1 stop Dallas/Fort Worth

$1,113American Airlines

Mon, Feb 1 - Wed, Feb 17

6:00 pm - 5:05 amSTL Lambert-St Louis-HND Tokyo Haneda

20h 05m2 stops Dallas/Fort Worth Los Angeles

8:25 pm - 11:57 pmHND Tokyo Haneda-STL Lambert-St Louis

18h 32m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,113American Airlines

Sun, Jan 17 - Tue, Feb 2

Cheap last minute flights

Enter your travel dates to find the best prices.

9:04 am - 9:15 pmSTL Lambert-St Louis-HND Tokyo Haneda

22h 11m1 stop Chicago O'Hare Intl

10:25 am - 12:22 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 57m1 stop Chicago O'Hare Intl

$1,104ANA

Mon, Sep 28 - Thu, Dec 3

8:00 am - 3:25 pmSTL Lambert-St Louis-HND Tokyo Haneda

17h 25m1 stop Chicago O'Hare Intl

10:25 am - 12:22 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 57m1 stop Chicago O'Hare Intl

$1,106ANA

Tue, Sep 29 - Fri, Dec 4

5:10 am - 2:15 pmSTL Lambert-St Louis-NRT Tokyo Narita

19h 05m2 stops Denver Intl Los Angeles

6:00 pm - 6:16 pmNRT Tokyo Narita-STL Lambert-St Louis

15h 16m1 stop Chicago O'Hare Intl

$1,110United Airlines

Mon, Sep 28 - Thu, Dec 3

6:40 am - 4:15 pmSTL Lambert-St Louis-HND Tokyo Haneda

19h 35m1 stop Detroit Metropolitan Wayne County

5:20 pm - 6:13 pmHND Tokyo Haneda-STL Lambert-St Louis

15h 53m1 stop Atlanta Hartsfield-Jackson

$1,110Delta

Tue, Sep 29 - Wed, Dec 2

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

15h 46m1 stop Detroit Metropolitan Wayne County

5:20 pm - 6:13 pmHND Tokyo Haneda-STL Lambert-St Louis

15h 53m1 stop Atlanta Hartsfield-Jackson

$1,110Delta

Mon, Sep 28 - Wed, Dec 2

5:10 am - 2:15 pmSTL Lambert-St Louis-NRT Tokyo Narita

19h 05m2 stops Denver Intl Los Angeles

5:30 pm - 8:57 pmNRT Tokyo Narita-STL Lambert-St Louis

18h 27m2 stops Los Angeles Denver Intl

$1,114United Airlines

Mon, Sep 28 - Thu, Dec 3

6:29 am - 3:30 pmSTL Lambert-St Louis-FUK Fukuoka

43h 01m2 stops Seattle/Tacoma Intl Hong Kong Intl

2:00 pm - 6:38 pmFUK Fukuoka-STL Lambert-St Louis

42h 38m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,142Multiple Airlines

Sat, Sep 26 - Wed, Sep 30

6:43 pm - 1:40 pmSTL Lambert-St Louis-NRT Tokyo Narita

28h 57m2 stops Dallas/Fort Worth Hong Kong Intl

9:35 pm - 11:59 pmNRT Tokyo Narita-STL Lambert-St Louis

41h 24m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,266Multiple Airlines

Sun, Sep 27 - Wed, Dec 2

7:21 am - 5:30 pmSTL Lambert-St Louis-HND Tokyo Haneda

20h 09m1 stop Chicago O'Hare Intl

4:30 pm - 9:59 pmHND Tokyo Haneda-STL Lambert-St Louis

19h 29m1 stop Dallas/Fort Worth

$1,385American Airlines

Fri, Sep 25 - Fri, Oct 9

6:30 am - 4:00 pmSTL Lambert-St Louis-NRT Tokyo Narita

43h 30m2 stops Los Angeles Osaka Kansai Intl

10:45 am - 4:43 pmNRT Tokyo Narita-STL Lambert-St Louis

20h 58m1 stop Chicago O'Hare Intl

$1,390Japan Airlines

Mon, Sep 28 - Fri, Dec 4

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American Airlines flights from St. Louis to Japan

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

American Airlines

Oct 6

STL6:04 amLambert-St Louis

22h 41m

1 stop

KIX6:45 pmOsaka Kansai Intl

Oct 9

KIX5:45 pmOsaka Kansai Intl

20h 01m

1 stop

STL11:46 pmLambert-St Louis

$1,550

American Airlines

Mar 14

STL6:38 amLambert-St Louis

22h 17m

2 stops

FUK6:55 pmFukuoka

Mar 21

FUK10:35 amFukuoka

24h 33m

2 stops

STL9:08 pmLambert-St Louis

$1,764

Japan Airlines flights from St. Louis to Japan

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

Japan Airlines

Nov 25

STL11:14 amLambert-St Louis

15h 36m

1 stop

HND5:50 pmTokyo Haneda

Dec 2

HND1:10 pmTokyo Haneda

18h 33m

1 stop

STL4:43 pmLambert-St Louis

$1,242

Japan Airlines

Feb 14

STL6:30 amLambert-St Louis

21h 40m

1 stop

KIX7:10 pmOsaka Kansai Intl

Mar 1

KIX9:05 pmOsaka Kansai Intl

28h 46m

2 stops

STL10:51 amLambert-St Louis

$1,261

Japan Airlines

Feb 14

STL6:30 amLambert-St Louis

21h 40m

1 stop

KIX7:10 pmOsaka Kansai Intl

Feb 28

KIX6:00 pmOsaka Kansai Intl

20h 48m

1 stop

STL11:48 pmLambert-St Louis

$1,312

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Mon 2/1

4:05 pm-4:40 pm

2 stops57h 35m

Tokyo Narita

Wed 2/17

6:45 pm-3:41 pm

2 stops35h 56m

$918

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Mon 2/1

4:05 pm-4:40 pm

2 stops33h 35m

Tokyo Narita

Wed 2/17

6:45 pm-3:26 pm

1 stop35h 41m

$921

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Mon 1/25

8:05 am-5:45 pm

1 stop18h 40m

Tokyo Haneda

Mon 2/8

6:20 pm-6:08 pm

1 stop14h 48m

$1,030

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Wed 1/27

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

Tue 4/27

5:25 pm-3:26 pm

1 stop36h 01m

$1,036

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Tue 1/12

5:25 am-3:15 pm

1 stop18h 50m

Tokyo Narita

Tue 2/2

6:00 pm-6:08 pm

1 stop15h 08m

$1,100

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Tue 12/29

7:18 am-3:15 pm

1 stop16h 57m

Tokyo Narita

Wed 1/13

5:30 pm-8:59 pm

2 stops18h 29m

$1,100

Quickest round-trip

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Wed 1/13

6:30 am-2:35 pm

1 stop17h 05m

Tokyo Haneda

Wed 2/3

5:20 pm-4:54 pm

1 stop14h 34m

$1,100

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 1/12

6:30 am-2:35 pm

1 stop17h 05m

Tokyo Haneda

Wed 2/3

5:20 pm-4:54 pm

1 stop14h 34m

$1,100

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Mon 2/1

6:00 pm-5:05 am

2 stops20h 05m

Tokyo Haneda

Wed 2/17

8:25 pm-11:34 pm

1 stop18h 09m

$1,113

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Sun 1/17

6:00 pm-5:05 am

2 stops20h 05m

Tokyo Haneda

Tue 2/2

8:25 pm-11:57 pm

2 stops18h 32m

$1,113

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 $835. 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 3% 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	$405
Fastest flight time	16h 00m
Direct flights	None

The best one-way flight to Japan from St. Louis in the past 72 hours is $405. The best round-trip flight deal from St. Louis to Japan found on momondo in the last 72 hours is $918.

The fastest flight from St. Louis to Japan takes 16h 00m

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 September 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
Air Canada	PriceFrom $667	Free Cancellation	Rating 7.1 11,668 reviews	Search Air Canada flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 10,226 reviews	Search United Airlines flights
American Airlines	PriceFrom $697	Free Cancellation	Rating 7.0 12,076 reviews	Search American Airlines flights
Delta	PriceFrom $739	Free Cancellation	Rating 7.8 8,591 reviews	Search Delta flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.3 1,321 reviews	Search ANA flights
Japan Airlines	PriceFrom $846	Free Cancellation	Rating 8.3 1,920 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.