$349 Cheap Flights from St. Louis (STL) to Tokyo (NRT)

View $349 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Narita Intl. Airport (NRT)

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Cheap Flights from St. Louis to Tokyo (STL-NRT)

Prices were available within the past 7 days and start at $349 for one-way flights and $653 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Oct 6 - Mon, Oct 27
STL
St. Louis
NRT
Tokyo
$653 Roundtrip, found 1 day ago
$653
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Oct 6 from St. Louis to Tokyo, returning Mon, Oct 27, priced at $653 found 1 day ago
Air Canada
Sun, Nov 23 - Sat, Dec 6
STL
St. Louis
NRT
Tokyo
$659 Roundtrip, found 18 hours ago
$659
Roundtrip
found 18 hours ago
Select Air Canada flight, departing Sun, Nov 23 from St. Louis to Tokyo, returning Sat, Dec 6, priced at $659 found 18 hours ago
Air Canada
Mon, Oct 6 - Mon, Oct 13
STL
St. Louis
NRT
Tokyo
$661 Roundtrip, found 10 hours ago
$661
Roundtrip
found 10 hours ago
Select Air Canada flight, departing Mon, Oct 6 from St. Louis to Tokyo, returning Mon, Oct 13, priced at $661 found 10 hours ago
Air Canada
Fri, Feb 20 - Fri, Feb 27
STL
St. Louis
NRT
Tokyo
$661 Roundtrip, found 16 hours ago
$661
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Fri, Feb 20 from St. Louis to Tokyo, returning Fri, Feb 27, priced at $661 found 16 hours ago
Air Canada
Mon, Nov 24 - Thu, Dec 4
STL
St. Louis
NRT
Tokyo
$663 Roundtrip, found 13 hours ago
$663
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Mon, Nov 24 from St. Louis to Tokyo, returning Thu, Dec 4, priced at $663 found 13 hours ago
Air Canada
Sat, Nov 22 - Sat, Dec 6
STL
St. Louis
NRT
Tokyo
$664 Roundtrip, found 2 days ago
$664
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Nov 22 from St. Louis to Tokyo, returning Sat, Dec 6, priced at $664 found 2 days ago
Alaska Airlines
Wed, Feb 18 - Thu, Feb 26
STL
St. Louis
NRT
Tokyo
$685 Roundtrip, found 5 days ago
$685
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Feb 18 from St. Louis to Tokyo, returning Thu, Feb 26, priced at $685 found 5 days ago
Hawaiian Airlines
Sat, Jan 17 - Fri, Jan 30
STL
St. Louis
NRT
Tokyo
$701 Roundtrip, found 19 hours ago
$701
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Sat, Jan 17 from St. Louis to Tokyo, returning Fri, Jan 30, priced at $701 found 19 hours ago
American Airlines
Wed, Feb 11 - Thu, Feb 19
STL
St. Louis
NRT
Tokyo
$759 Roundtrip, found 5 days ago
$759
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Feb 11 from St. Louis to Tokyo, returning Thu, Feb 19, priced at $759 found 5 days ago
United
Tue, Apr 21 - Tue, May 5
STL
St. Louis
NRT
Tokyo
$759 Roundtrip, found 1 day ago
$759
Roundtrip
found 1 day ago
Select United flight, departing Tue, Apr 21 from St. Louis to Tokyo, returning Tue, May 5, priced at $759 found 1 day ago

Find the cheapest month to fly from St. Louis (STL) to Tokyo (NRT)

September is typically the cheapest month to fly

From $636 - $1,203 per traveler.

Graph displaying average flight prices per month

Flights from St. Louis (STL) to Tokyo (NRT)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Narita Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Delta, Hawaiian Airlines, Japan Airlines, Korean Air, United
Roundtrip price
$653
Distance
6354 mi

St. Louis to Tokyo Flights

The cheapest times to fly from St. Louis to Tokyo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Tokyo are during the month of October. You can find some of the cheapest flights from St. Louis to Tokyo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Tokyo

Sunday is one of the best days to book for cheap flights from St. Louis to Tokyo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Tokyo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Tokyo in 2025. You can also book with separate airlines for your outbound and return journeys, from $349 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Tokyo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Tokyo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT) cost?
Discover the latest flight deals from STL to NRT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to NRT?
The cheapest flights from STL to NRT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to NRT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to NRT. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT)?
There are no daily direct flights available from Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to NRT?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change based on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT) last-minute?
Holding off until right before your break to book a ticket from STL to NRT often results in higher prices. While you may find some last-minute deals, they're not always guaranteed. Keep your travel plans flexible for the best chance of scoring a bargain.
Is it cheaper to book a STL to NRT flight and hotel package?
Securing a STL to NRT flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Select from our impressive range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Narita Intl. Airport (NRT)?
Typically, you can modify or cancel your STL to NRT flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further details, visit our Customer Service portal.

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