Cheap flights from St. Louis to Osaka Kansai Intl Airport from $372
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 Osaka Kansai Intl Airport departing on 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Osaka
Cheap round-trip flights
Cheap one-way flights
United Airlines flights from St. Louis to Osaka Kansai Intl Airport
Our best United Airlines deals on St. Louis to Osaka Kansai Intl Airport flight tickets
Cathay Pacific flights from St. Louis to Osaka Kansai Intl Airport
Our best Cathay Pacific deals on St. Louis to Osaka Kansai Intl Airport flight tickets
See travel insights to Osaka from
How to get the cheapest flight ticket from St. Louis to Osaka Kansai Intl Airport
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 day to depart on your flight to Osaka Kansai Intl Airport?
The cheapest day to depart from St. Louis to Osaka Kansai Intl Airport is on a Sunday. Travelers who choose to depart for Osaka Kansai Intl Airport on a Sunday will often find tickets for as low as $1,214. Flights from St. Louis to Osaka Kansai Intl Airport on a Monday will generally be more expensive and average around $1,861. 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 Osaka Kansai Intl Airport?
Our data shows that the cheapest St. Louis to Osaka Kansai Intl Airport flights are usually those with departure times in the evening. Our users have found flights to Osaka Kansai Intl Airport in the evening for as low as $1,214. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,861 on average. Flights to Osaka Kansai Intl Airport from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
When to book flights from St. Louis to Osaka Kansai Intl Airport
Cheap St. Louis to Osaka Kansai Intl Airport (STL to KIX) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Osaka Kansai Intl Airport
How far is Lambert-St Louis to Osaka Kansai Intl by plane?
The straight-line distance from Lambert-St Louis to Osaka Kansai Intl is 6607.3 mi. A reasonable flight in good conditions will take 17h 10m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Osaka Kansai Intl Airport?
Prices for flights from Lambert-St Louis Airport to Osaka Kansai Intl Airport were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Osaka Kansai Intl Airport?
There are 2 operators available for flights from Lambert-St Louis Airport to Osaka Kansai Intl Airport as of March 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Osaka Kansai Intl Airport?
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 Osaka Kansai Intl Airport.
What documentation or ID do you need to fly to Osaka Kansai Intl Airport?
The necessary travel and health documents for your Osaka Kansai Intl Airport 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.
What is the most popular airline from St. Louis to Osaka Kansai Intl Airport?
Based on momondo bookings for flights between St. Louis and Osaka Kansai Intl Airport, the leading airline is Japan Airlines, making up 55% of the total bookings. Other popular airlines include United Airlines with 45%.
Best airlines flying from St. Louis to Osaka Kansai Intl Airport
Compare and see reviews for airlines that fly from St. Louis to Osaka Kansai Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $723 | Free Cancellation | Rating 8.3 1,440 reviews | |||
| PriceFrom $778 | Free Cancellation | Rating 7.4 8,614 reviews |
Traveling to a place near Osaka?
Book flights to Osaka if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Osaka?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Osaka. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from St. Louis to Osaka with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for St. Louis to Osaka flights to just show those with flexible booking policies.
How can momondo help me find flights from St. Louis to Osaka?
momondo provides multiple filters to help you find the best flight to Osaka 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 Osaka right now. Can momondo alert me if prices change?
Price alerts on flights to Osaka from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.