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Cheap flights from St. Louis to Tokyo from $340

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Tokyo departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Tokyo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:05 pm - 4:20 pm
STL
-
NRT
33h 15m2 stops
Air Canada Logo
6:15 pm - 9:00 pm
NRT
-
STL
41h 45m2 stops
$622Air Canada
Tue, Feb 17 - Tue, Mar 3
Air Canada Logo
6:40 pm - 4:30 pm
STL
-
NRT
30h 50m2 stops
Air Canada Logo
6:15 pm - 9:00 pm
NRT
-
STL
41h 45m2 stops
$627Air Canada
Tue, Feb 10 - Tue, Feb 17
Air Canada Logo
6:40 pm - 4:30 pm
STL
-
NRT
30h 50m2 stops
Air Canada Logo
6:45 pm - 3:29 pm
NRT
-
STL
35h 44m1 stop
$638Air Canada
Mon, Feb 9 - Fri, Feb 27
Air Canada Logo
4:05 pm - 4:40 pm
STL
-
HND
33h 35m1 stop
Air Canada Logo
6:50 pm - 3:29 pm
HND
-
STL
35h 39m1 stop
$640Air Canada
Sun, Feb 1 - Sun, Feb 8
Air Canada Logo
4:05 pm - 4:40 pm
STL
-
HND
33h 35m1 stop
Air Canada Logo
6:50 pm - 3:29 pm
HND
-
STL
35h 39m1 stop
$641Air Canada
Fri, Feb 6 - Thu, Feb 19
Air Canada Logo
4:05 pm - 4:30 pm
STL
-
NRT
33h 25m1 stop
Air Canada Logo
6:45 pm - 3:29 pm
NRT
-
STL
35h 44m1 stop
$641Air Canada
Fri, Feb 20 - Sun, Mar 1
Air Canada Logo
4:49 pm - 4:30 pm
STL
-
NRT
32h 41m2 stops
Air Canada Logo
6:45 pm - 10:36 am
NRT
-
STL
30h 51m2 stops
$643Air Canada
Mon, Feb 9 - Fri, Feb 27
Air Canada Logo
6:40 pm - 4:40 pm
STL
-
HND
31h 00m2 stops
Air Canada Logo
6:50 pm - 3:29 pm
HND
-
STL
35h 39m1 stop
$644Air Canada
Sun, Feb 8 - Thu, Feb 26
Air Canada Logo
4:05 pm - 4:40 pm
STL
-
HND
33h 35m1 stop
Air Canada Logo
6:50 pm - 10:36 am
HND
-
STL
30h 46m2 stops
$645Air Canada
Mon, Feb 9 - Fri, Feb 27
Air Canada Logo
4:05 pm - 4:30 pm
STL
-
NRT
33h 25m1 stop
Air Canada Logo
6:45 pm - 3:29 pm
NRT
-
STL
35h 44m2 stops
$645Air Canada
Fri, Feb 6 - Thu, Feb 19

Delta flights from St. Louis to Tokyo

Our best Delta deals on St. Louis to Tokyo flight tickets
Delta
Feb 6
STL10:19 amLambert-St Louis
16h 26m
1 stop
HND5:45 pmTokyo Haneda
Mar 1
HND5:20 pmTokyo Haneda
14h 25m
1 stop
STL4:45 pmLambert-St Louis
$720
Find similar
Delta
Feb 6
STL10:19 amLambert-St Louis
16h 26m
1 stop
HND5:45 pmTokyo Haneda
Feb 28
HND8:00 pmTokyo Haneda
18h 36m
1 stop
STL11:36 pmLambert-St Louis
$730
Find similar
Delta
Feb 6
STL6:10 amLambert-St Louis
18h 10m
1 stop
HND3:20 pmTokyo Haneda
Mar 2
HND5:20 pmTokyo Haneda
18h 21m
2 stops
STL8:41 pmLambert-St Louis
$735
Find similar

United Airlines flights from St. Louis to Tokyo

Our best United Airlines deals on St. Louis to Tokyo flight tickets
United Airlines
Feb 7
STL4:15 pmLambert-St Louis
21h 35m
2 stops
HND4:50 amTokyo Haneda
Feb 24
HND4:25 pmTokyo Haneda
19h 01m
2 stops
STL8:26 pmLambert-St Louis
$687
Find similar
United Airlines
Feb 6
STL8:30 amLambert-St Louis
17h 20m
1 stop
HND4:50 pmTokyo Haneda
Feb 27
HND6:20 pmTokyo Haneda
15h 59m
1 stop
STL7:19 pmLambert-St Louis
$688
Find similar
United Airlines
Feb 6
STL8:30 amLambert-St Louis
17h 20m
1 stop
HND4:50 pmTokyo Haneda
Feb 27
HND12:50 amTokyo Haneda
23h 33m
2 stops
STL9:23 amLambert-St Louis
$689
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Tokyo 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 December 4, 2025.
Use the filters below to find and compare flights from St. Louis to Tokyo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 2/17

4:05 pm-4:20 pm

2 stops33h 15m

Tokyo Narita

Tue 3/3

6:15 pm-9:00 pm

2 stops41h 45m

$622

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 2/10

6:40 pm-4:30 pm

2 stops30h 50m

Tokyo Narita

Tue 2/17

6:15 pm-9:00 pm

2 stops41h 45m

$627

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/9

6:40 pm-4:30 pm

2 stops30h 50m

Tokyo Narita

Fri 2/27

6:45 pm-3:29 pm

1 stop35h 44m

$638

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/1

4:05 pm-4:40 pm

1 stop33h 35m

Tokyo Haneda

Sun 2/8

6:50 pm-3:29 pm

1 stop35h 39m

$640

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Fri 2/6

4:05 pm-4:40 pm

1 stop33h 35m

Tokyo Haneda

Thu 2/19

6:50 pm-3:29 pm

1 stop35h 39m

$641

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Fri 2/20

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

Sun 3/1

6:45 pm-3:29 pm

1 stop35h 44m

$641

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Mon 2/9

4:49 pm-4:30 pm

2 stops32h 41m

Tokyo Narita

Fri 2/27

6:45 pm-10:36 am

2 stops30h 51m

$643

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Sun 2/8

6:40 pm-4:40 pm

2 stops31h 00m

Tokyo Haneda

Thu 2/26

6:50 pm-3:29 pm

1 stop35h 39m

$644

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Mon 2/9

4:05 pm-4:40 pm

1 stop33h 35m

Tokyo Haneda

Fri 2/27

6:50 pm-10:36 am

2 stops30h 46m

$645

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Fri 2/6

4:05 pm-4:30 pm

1 stop33h 25m

Tokyo Narita

Thu 2/19

6:45 pm-3:29 pm

2 stops35h 44m

$645

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 Tokyo from

How to get the cheapest flight ticket from St. Louis to Tokyo

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

What is the cheapest month to fly to Tokyo?

The cheapest month to fly to Tokyo from St. Louis is in September. Flight prices, which tend to average around $738, are often lower during this time because this is during the off-season. If you’re not able to fly to Tokyo in September, then January is your next best option. Flight prices from St. Louis to Tokyo during January average around $775.

What is the cheapest day to depart on your flight to Tokyo?

The cheapest day to depart on your flight to Tokyo is on a Wednesday when prices can be found for as low as $1,209. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Tokyo on a Friday will generally be more expensive and average around $1,457. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Tokyo?

At noon is the cheapest time of day to fly from St. Louis to Tokyo when you can find flight prices for as low as $1,103. Flying to Tokyo at noon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Tokyo is in the morning when prices are around $1,308.

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

You could potentially save up to 22% on your flight if you consider stops on a St. Louis to Tokyo flight.

How have St. Louis to Tokyo flight prices changed over time?

As of December 2025, prices for St. Louis to Tokyo flights are approximately 46% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Tokyo

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Tokyo according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Tokyo (STL to TYO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Tokyo

Fastest flight time

15h 30m

Direct flights

None
The fastest flight from St. Louis to Tokyo takes 15h 30m
There are no direct flights from St. Louis to Tokyo. There are no popular flight routes from St. Louis to Tokyo.
Search flight deals

  • How far is Lambert-St Louis to Tokyo by plane?

    The straight-line distance from Lambert-St Louis to Tokyo is 6388.4 mi. By plane, this route typically takes 16h 26m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Tokyo?

    Prices for flights from Lambert-St Louis Airport to Tokyo were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Tokyo?

  • How old do you have to be to fly from Lambert-St Louis Airport to Tokyo?

    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 Tokyo.

  • What documentation or ID do you need to fly to Tokyo?

    The travel and health documents you'll need for your trip to Tokyo may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Tokyo. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Tokyo?

Best airlines flying from St. Louis to Tokyo

Compare and see reviews for airlines that fly from St. Louis to Tokyo with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $629Free CancellationRating
7.1
10,500 reviews
Search Air Canada flights
American AirlinesPriceFrom $633Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
Japan AirlinesPriceFrom $691Free CancellationRating
8.3
1,638 reviews
Search Japan Airlines flights
ANAPriceFrom $703Free CancellationRating
8.4
1,017 reviews
Search ANA flights
United AirlinesPriceFrom $716Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
DeltaPriceFrom $722Free CancellationRating
7.9
8,011 reviews
Search Delta flights

Traveling to a place near Tokyo?

Book flights to Tokyo if you plan to visit one of these locations
Hakone
Urayasu
Kawasaki
Chiba
Atami
Kamakura
Yokosuka
Kusatsu
Saitama
Yamanouchi
Fujiyoshida
Izu
Fujisawa
Tsukuba
Kawagoe
Numazu
Karuizawa
Yamanashi
Minakami
Sagamihara

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Tokyo?

It is quick and easy to find St. Louis to Tokyo flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Tokyo that suits you.

Can I find flights from St. Louis to Tokyo with flexible booking policies on momondo?

momondo does allow users to show only those flights to Tokyo 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 Tokyo?

momondo provides multiple filters to help you find the best flight to Tokyo from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Tokyo right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Tokyo flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Japan

Fly into one of these airports located in Tokyo

Airports listed have a maximum distance of 35.1 mi from Tokyo
Tokyo Haneda Airport
Tokyo Narita Airport