STL - KIX

$351 Find Cheap Flights from St. Louis to Osaka

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Kansai Intl departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Osaka Kansai Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Osaka, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Osaka, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$727
ANA
Tue 2/3Thu 2/19
STL - KIX • 2 stops
Cheapest one-way
$548
Japan Airlines
Mon 12/8
STL - KIX • 1 stop
Top airlines
ANA
Cheapest • from $727 (round-trip)
Japan Airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
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+1
Airline reviews
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We hope you love your trip to Kansai Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Osaka (STL-KIX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Osaka that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Kansai Intl

Tue, Feb 3 - Thu, Feb 19
ANA Logo
11:20 am - 8:35 amSTL-KIX
30h 15m2 stops
ANA Logo
2:05 pm - 7:19 pmKIX-STL
20h 14m2 stops
$727ANA
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Tue, Feb 3 - Thu, Feb 19
Air Canada Logo
4:05 pm - 7:25 pmSTL-KIX
36h 20m2 stops
Air Canada Logo
3:45 pm - 3:29 pmKIX-STL
38h 44m2 stops
$792Air Canada
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Tue, Feb 3 - Thu, Feb 19
Japan Airlines Logo
3:20 pm - 8:25 amSTL-KIX
26h 05m2 stops
Japan Airlines Logo
5:50 pm - 11:08 pmKIX-STL
20h 18m1 stop
$829Japan Airlines
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Sun, Feb 15 - Sat, Feb 28
American Airlines Logo
6:10 am - 6:50 pmSTL-KIX
21h 40m1 stop
American Airlines Logo
5:50 pm - 11:08 pmKIX-STL
20h 18m1 stop
$851American Airlines
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Sun, Feb 15 - Sat, Feb 28
Japan Airlines Logo
6:04 am - 2:15 pmSTL-KIX
41h 11m2 stops
Japan Airlines Logo
5:50 pm - 11:08 pmKIX-STL
20h 18m1 stop
$852Japan Airlines
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Sun, Dec 7 - Sun, Dec 14
American Airlines Logo
6:55 am - 6:50 pmSTL-KIX
20h 55m1 stop
American Airlines Logo
5:50 pm - 11:57 pmKIX-STL
21h 07m1 stop
$897American Airlines
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Sat, Dec 6 - Sat, Dec 13
United Airlines Logo
8:30 am - 4:40 pmSTL-KIX
41h 10m2 stops
United Airlines Logo
6:35 pm - 3:40 pmKIX-STL
36h 05m3 stops
$928United Airlines
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Sat, Dec 6 - Sat, Dec 13
United Airlines Logo
4:45 pm - 4:40 pmSTL-KIX
32h 55m2 stops
United Airlines Logo
6:35 pm - 4:27 pmKIX-STL
36h 52m1 stop
$938United Airlines
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Fri, Mar 20 - Sat, Mar 28
Multiple Airlines Logo
5:59 pm - 3:15 pmSTL-KIX
31h 16m2 stops
Multiple Airlines Logo
7:05 pm - 11:09 pmKIX-STL
42h 04m2 stops
$1,318Multiple Airlines
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Fri, Mar 20 - Sat, Mar 28
Multiple Airlines Logo
5:59 pm - 2:55 pmSTL-KIX
30h 56m3 stops
Multiple Airlines Logo
7:05 pm - 11:09 pmKIX-STL
42h 04m2 stops
$1,334Multiple Airlines
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Booking Insights

KAYAK's insights & trends for St. Louis to Kansai Intl flights

Get data-powered insights and trends into flights from St. Louis to Kansai Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from St. Louis to Osaka?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Osaka were found on ANA ($727) and Air Canada ($792).

Which airlines fly non-stop between St. Louis and Osaka Kansai Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from St. Louis to Osaka Kansai Intl Airport.

There is just one airline that flies from St. Louis to Osaka Kansai Intl Airport direct and that is Japan Airlines. The best round-trip deal found from Japan Airlines for the route is $723.

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Good to know

Low seasonSeptember
Cheapest flight$548
Best time to beat the crowds with an average 51% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Osaka

When to book flights from St. Louis to Kansai Intl

Are your dates flexible? Find out the best times to travel from St. Louis to Kansai Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Osaka flights

  • What is the cheapest flight from St. Louis to Osaka Kansai Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Osaka Kansai Intl Airport was $548 for a one-way ticket and $727 for a round-trip.

  • Do I need a passport to fly between St. Louis and Osaka?

    Yes, you’ll need a passport to travel to Osaka from St. Louis.

  • Which airports will I be using when flying from St. Louis to Osaka?

    On your way to Osaka, you’ll fly out from Lambert-St Louis. You’ll be landing at Osaka Kansai Intl.

  • Which aircraft models fly most regularly from St. Louis to Osaka?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Osaka?

    oneworld is the only airline alliance operating flights between St. Louis and Osaka.

  • How does KAYAK find such low prices on flights from St. Louis to Osaka?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Osaka.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Osaka?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Osaka?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Osaka with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and KIX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Osaka?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Osaka from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Kansai Intl

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Osaka. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Kansai Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
Japan AirlinesOverall score based on 1589 reviews
8.2Comfort
7.7Food
7.8Entertainment
8.4Boarding
8.7Crew
Airline reviews

I traveled business class from Lax to Narita flight Jl61. The crew was attentive and polite. Food was good quality and service was as it should be. Narita to Bengaluru Jl753was another story in business class. The cabin was darkened for the 9hr:30min flight, food was mediocre, service was below standard and crew can't speak English to save their lives. When you ask for noodles soup from Ala carte they gave cup of noodles while Lax to Narita i was served the best Ramen noodles in a big bowl. Why the disparity on this leg of the journey.....or is it because there were mostly Indian passengers and it really did not matter to Jal to bother as its a poor country and Indians refrain from speaking up? A good airline but differentiation like this brings their reputation and business down.

8.0 Excellentsudha, Oct 2025LAX - NRT
Read more Japan Airlines reviews

I traveled business class from Lax to Narita flight Jl61. The crew was attentive and polite. Food was good quality and service was as it should be. Narita to Bengaluru Jl753was another story in business class. The cabin was darkened for the 9hr:30min flight, food was mediocre, service was below standard and crew can't speak English to save their lives. When you ask for noodles soup from Ala carte they gave cup of noodles while Lax to Narita i was served the best Ramen noodles in a big bowl. Why the disparity on this leg of the journey.....or is it because there were mostly Indian passengers and it really did not matter to Jal to bother as its a poor country and Indians refrain from speaking up? A good airline but differentiation like this brings their reputation and business down.

Japan Airlines was excellent as usual once on the plane. Cabin crew was wonderful as usual. Boarding was solid on the Honolulu leg. For Thai Airways the boarding was less organized. I was in an earlier group but they weren’t clear with the numbers or instructions. Flight crew from Japan to Thailand was very good.

Terrible. Our flight was delayed by 15 hours. We lost a full day of our vacation.

highly recommend for trip to japan only reason why i gave good not excellent is because their selection of movies and tv shows in English is more limited .

We asked for Hindu vegetarian meal in advance and the quality of the food was horrendous. Never flying JAL again!

Japan airline is excellent service .I recommend to Kayak and Japan airline to Frend.

Overall a great experience. One complain was the vegetarian food that my wife had which was mostly boiled vegetables with not much flavor.

Very accommodating and kind airline crews. The plane is also big which makes the passengers more comfortable and relax

I actually didn’t make it onto the flight. I spent quite a few hours trying to rebook the flight just to get screwed out of $5000. Fun!

We booked business class round trip from Delhi to San Diego and back. On our last leg from Bangalore to Delhi we were down graded to economy class which was big disappointment other than that everything was great.

Everything you need to know for your flight from St. Louis to Kansai Intl

Information on your arrival and departure airports

St. Louis (STL)
Kansai Intl (KIX)

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