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

Air Canada, American Airlines, and United Airlines 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.

$430 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.

7:04 pm - 4:30 pmSTL Lambert-St Louis-NRT Tokyo Narita

30h 26m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:15 pm - 9:13 pmNRT Tokyo Narita-STL Lambert-St Louis

41h 58m2 stops Vancouver Intl Chicago O'Hare Intl

$827Air Canada

Mon, Feb 1 - Wed, Feb 17

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

33h 25m2 stops Toronto Pearson Intl Vancouver Intl

6:15 pm - 4:56 pmNRT Tokyo Narita-STL Lambert-St Louis

37h 41m2 stops Vancouver Intl Chicago O'Hare Intl

$827Air Canada

Mon, Feb 1 - Tue, Feb 16

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

43h 00m1 stop Montreal Pierre Elliott Trudeau Intl

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

35h 41m1 stop Toronto Pearson Intl

$894ANA

Mon, Feb 1 - Wed, Feb 17

8:55 am - 3:50 pmSTL Lambert-St Louis-NRT Tokyo Narita

16h 55m1 stop Toronto Pearson Intl

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

16h 30m1 stop Toronto Pearson Intl

$930ANA

Mon, Sep 7 - Mon, Sep 28

8:55 am - 3:40 pmSTL Lambert-St Louis-HND Tokyo Haneda

16h 45m1 stop Toronto Pearson Intl

1:40 pm - 8:00 pmHND Tokyo Haneda-STL Lambert-St Louis

20h 20m2 stops Osaka Kansai Intl Toronto Pearson Intl

$943Multiple Airlines

Wed, Sep 30 - Wed, Oct 7

8:55 am - 3:40 pmSTL Lambert-St Louis-HND Tokyo Haneda

16h 45m1 stop Toronto Pearson Intl

1:40 pm - 8:00 pmHND Tokyo Haneda-STL Lambert-St Louis

20h 20m2 stops Osaka Kansai Intl Toronto Pearson Intl

$943Multiple Airlines

Tue, Sep 29 - Wed, Oct 7

7:30 am - 5:45 pmSTL Lambert-St Louis-HND Tokyo Haneda

19h 15m1 stop Chicago O'Hare Intl

6:20 pm - 9:13 pmHND Tokyo Haneda-STL Lambert-St Louis

17h 53m1 stop Chicago O'Hare Intl

$1,109United Airlines

Tue, Nov 17 - Tue, Dec 1

8:35 am - 7:00 pmSTL Lambert-St Louis-HND Tokyo Haneda

20h 25m2 stops Houston George Bush Intcntl Seattle/Tacoma Intl

10:40 am - 11:57 amHND Tokyo Haneda-STL Lambert-St Louis

15h 17m1 stop Chicago O'Hare Intl

$1,109United Airlines

Tue, Sep 1 - Wed, Sep 9

6:45 am - 5:45 pmSTL Lambert-St Louis-HND Tokyo Haneda

20h 00m1 stop Detroit Metropolitan Wayne County

4:25 pm - 6:01 pmHND Tokyo Haneda-STL Lambert-St Louis

16h 36m1 stop Atlanta Hartsfield-Jackson

$1,109Delta

Wed, Jan 13 - Thu, Jan 21

10:45 am - 5:45 pmSTL Lambert-St Louis-HND Tokyo Haneda

16h 00m1 stop Detroit Metropolitan Wayne County

5:15 pm - 4:54 pmHND Tokyo Haneda-STL Lambert-St Louis

14h 39m1 stop Minneapolis St Paul

$1,109Delta

Tue, Jan 12 - Fri, Jan 22

Cheap last minute flights

Enter your travel dates to find the best prices.

6:02 am - 4:00 pmSTL Lambert-St Louis-NRT Tokyo Narita

19h 58m1 stop Seattle/Tacoma Intl

6:00 pm - 6:57 pmNRT Tokyo Narita-STL Lambert-St Louis

14h 57m1 stop Seattle/Tacoma Intl

$1,163Multiple Airlines

Mon, Aug 10 - Mon, Aug 17

6:02 am - 4:00 pmSTL Lambert-St Louis-NRT Tokyo Narita

19h 58m1 stop Seattle/Tacoma Intl

6:00 pm - 11:59 pmNRT Tokyo Narita-STL Lambert-St Louis

19h 59m1 stop Seattle/Tacoma Intl

$1,163Multiple Airlines

Mon, Aug 10 - Mon, Aug 31

9:32 am - 5:30 pmSTL Lambert-St Louis-HND Tokyo Haneda

17h 58m1 stop Chicago O'Hare Intl

1:00 pm - 7:27 pmHND Tokyo Haneda-STL Lambert-St Louis

20h 27m1 stop Chicago O'Hare Intl

$1,169American Airlines

Thu, Aug 13 - Thu, Aug 20

6:36 am - 2:20 pmSTL Lambert-St Louis-HND Tokyo Haneda

17h 44m1 stop Dallas/Fort Worth

4:30 pm - 10:41 pmHND Tokyo Haneda-STL Lambert-St Louis

20h 11m1 stop Dallas/Fort Worth

$1,169American Airlines

Thu, Aug 13 - Thu, Aug 20

5:10 am - 2:30 pmSTL Lambert-St Louis-NRT Tokyo Narita

19h 20m1 stop Denver Intl

5:25 pm - 11:38 pmNRT Tokyo Narita-STL Lambert-St Louis

20h 13m1 stop Newark

$1,170United Airlines

Tue, Aug 11 - Tue, Aug 18

8:50 am - 3:10 pmSTL Lambert-St Louis-NRT Tokyo Narita

16h 20m1 stop Chicago O'Hare Intl

5:05 pm - 10:00 pmNRT Tokyo Narita-STL Lambert-St Louis

18h 55m2 stops San Francisco Chicago O'Hare Intl

$1,175United Airlines

Tue, Aug 11 - Tue, Aug 18

6:20 am - 2:20 pmSTL Lambert-St Louis-HND Tokyo Haneda

18h 00m2 stops Minneapolis St Paul Seattle/Tacoma Intl

4:20 pm - 11:26 pmHND Tokyo Haneda-STL Lambert-St Louis

21h 06m2 stops Seattle/Tacoma Intl Minneapolis St Paul

$1,216Delta

Wed, Aug 12 - Wed, Aug 19

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 - 4:44 pmHND Tokyo Haneda-STL Lambert-St Louis

14h 39m1 stop Minneapolis St Paul

$1,216Delta

Wed, Aug 12 - Wed, Aug 19

6:15 am - 3:25 pmSTL Lambert-St Louis-HND Tokyo Haneda

19h 10m1 stop Houston George Bush Intcntl

5:15 pm - 8:39 amHND Tokyo Haneda-STL Lambert-St Louis

29h 24m1 stop Chicago O'Hare Intl

$1,220ANA

Tue, Aug 11 - Tue, Aug 18

8:50 am - 3:25 pmSTL Lambert-St Louis-HND Tokyo Haneda

16h 35m1 stop Chicago O'Hare Intl

6:10 pm - 8:39 amHND Tokyo Haneda-STL Lambert-St Louis

28h 29m2 stops Los Angeles Los Angeles Chicago O'Hare Intl

$1,223ANA

Tue, Aug 11 - Tue, Aug 18

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United Airlines flights from St. Louis to Japan

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

United Airlines

Nov 24

STL9:40 amLambert-St Louis

41h 45m

2 stops

FUK6:25 pmFukuoka

Dec 1

FUK12:35 pmFukuoka

23h 38m

2 stops

STL9:13 pmLambert-St Louis

$1,117

United Airlines

Aug 19

STL7:25 amLambert-St Louis

17h 45m

1 stop

NRT3:10 pmTokyo Narita

Aug 26

NRT4:30 pmTokyo Narita

14h 04m

1 stop

STL4:34 pmLambert-St Louis

$1,170

United Airlines

Aug 11

STL8:50 amLambert-St Louis

16h 20m

1 stop

NRT3:10 pmTokyo Narita

Aug 18

NRT5:05 pmTokyo Narita

18h 55m

2 stops

STL10:00 pmLambert-St Louis

$1,175

American Airlines flights from St. Louis to Japan

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

American Airlines

Sep 15

STL6:30 amLambert-St Louis

22h 15m

1 stop

KIX6:45 pmOsaka Kansai Intl

Sep 22

KIX5:45 pmOsaka Kansai Intl

19h 45m

1 stop

STL11:30 pmLambert-St Louis

$1,112

American Airlines

Sep 15

STL7:00 amLambert-St Louis

21h 45m

2 stops

KIX6:45 pmOsaka Kansai Intl

Sep 22

KIX5:45 pmOsaka Kansai Intl

19h 45m

1 stop

STL11:30 pmLambert-St Louis

$1,117

American Airlines

Aug 28

STL6:00 amLambert-St Louis

22h 45m

1 stop

KIX6:45 pmOsaka Kansai Intl

Sep 4

KIX5:45 pmOsaka Kansai Intl

19h 14m

1 stop

STL10:59 pmLambert-St Louis

$1,122

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

7:04 pm-4:30 pm

2 stops30h 26m

Tokyo Narita

Wed 2/17

6:15 pm-9:13 pm

2 stops41h 58m

$827

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Mon 2/1

4:05 pm-4:30 pm

2 stops33h 25m

Tokyo Narita

Tue 2/16

6:15 pm-4:56 pm

2 stops37h 41m

$827

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Mon 2/1

6:30 am-4:30 pm

1 stop43h 00m

Tokyo Narita

Wed 2/17

6:45 pm-3:26 pm

1 stop35h 41m

$894

St. LouisTokyo

STL Lambert-St Louis - NRT Tokyo Narita

STLNRT

Lambert-St Louis

Mon 9/7

8:55 am-3:50 pm

1 stop16h 55m

Tokyo Narita

Mon 9/28

5:50 pm-8:20 pm

1 stop16h 30m

$930

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Wed 9/30

8:55 am-3:40 pm

1 stop16h 45m

Tokyo Haneda

Wed 10/7

1:40 pm-8:00 pm

2 stops20h 20m

$943

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 9/29

8:55 am-3:40 pm

1 stop16h 45m

Tokyo Haneda

Wed 10/7

1:40 pm-8:00 pm

2 stops20h 20m

$943

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 11/17

7:30 am-5:45 pm

1 stop19h 15m

Tokyo Haneda

Tue 12/1

6:20 pm-9:13 pm

1 stop17h 53m

$1,109

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 9/1

8:35 am-7:00 pm

2 stops20h 25m

Tokyo Haneda

Wed 9/9

10:40 am-11:57 am

1 stop15h 17m

$1,109

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Wed 1/13

6:45 am-5:45 pm

1 stop20h 00m

Tokyo Haneda

Thu 1/21

4:25 pm-6:01 pm

1 stop16h 36m

$1,109

Quickest round-trip

St. LouisTokyo

STL Lambert-St Louis - HND Tokyo Haneda

STLHND

Lambert-St Louis

Tue 1/12

10:45 am-5:45 pm

1 stop16h 00m

Tokyo Haneda

Fri 1/22

5:15 pm-4:54 pm

1 stop14h 39m

$1,109

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 $819. 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.

How far in advance should I book a flight from St. Louis to Japan?

You are more likely to see cheaper flights to Japan from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Japan for around $1,213 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Japan from St. Louis for as low as $672 on momondo.

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

Fastest flight time	15h 22m
Direct flights	None

The fastest flight from St. Louis to Japan takes 15h 22m

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 $593	Free Cancellation	Rating 7.1 11,894 reviews	Search American Airlines flights
Air Canada	PriceFrom $667	Free Cancellation	Rating 7.1 11,455 reviews	Search Air Canada flights
United Airlines	PriceFrom $697	Free Cancellation	Rating 7.4 10,091 reviews	Search United Airlines flights
Delta	PriceFrom $739	Free Cancellation	Rating 7.8 8,499 reviews	Search Delta flights
ANA	PriceFrom $785	Free Cancellation	Rating 8.3 1,294 reviews	Search ANA flights
Japan Airlines	PriceFrom $846	Free Cancellation	Rating 8.3 1,893 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.