Cheap flights from St. Louis to Japan from $381
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 Japan departing on 9/19. 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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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
What is the cheapest month to fly to Japan?
The month of September is, on average, the cheapest month to fly to Japan from St. Louis, with most prices found around $816. If you aren’t able to travel to Japan during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $837.
What is the cheapest day to depart on your flight to Japan?
On average, the least expensive day to fly to Japan from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,209. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to Japan 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 Japan?
Flying to Japan from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,103 when looking at flights departing at noon. In the morning is when there is more demand to fly to Japan, so prices are often more expensive at around $1,308 per ticket.
Can stopping save me money on St. Louis to Japan flights?
You could potentially save up to 16% on your flight if you consider stops on a St. Louis to Japan flight.
What is the cheapest airline that flies from Lambert-St Louis to Japan?
Air Canada, Alaska Airlines, and Japan 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 40% 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.
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
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 June 2025.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $629 | Free Cancellation | Rating 7.1 9,657 reviews | |||
| PriceFrom $691 | Free Cancellation | Rating 8.3 1,504 reviews | |||
| PriceFrom $714 | Free Cancellation | Rating 8.4 892 reviews | |||
| PriceFrom $719 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $731 | Free Cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $738 | Free Cancellation | Rating 7.4 8,852 reviews |
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.