STL - KIX

$785 Find Cheap Flights from St. Louis to Osaka

This is the cheapest round-trip 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 9/20. 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.
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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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Flights Deals

Cheap Flights from St. Louis to Osaka

 
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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Kansai Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
Air Canada Logo
1:30 pm - 4:25 pmSTL-KIX
36h 55m2 stops
Air Canada Logo
6:05 pm - 3:38 pmKIX-STL
35h 33m2 stops
$785Air Canada
Find Deal
Sat, Sep 20 - Sun, Sep 28
Air Canada Logo
9:15 am - 4:25 pmSTL-KIX
17h 10m1 stop
Air Canada Logo
6:05 pm - 7:57 pmKIX-STL
39h 52m2 stops
$794Air Canada
Find Deal
Sat, Sep 20 - Sun, Sep 28
Delta Logo
5:37 pm - 9:00 pmSTL-KIX
37h 23m2 stops
Delta Logo
6:20 pm - 8:49 pmKIX-STL
40h 29m2 stops
$888Delta
Find Deal
Mon, Jul 7 - Mon, Sep 8
 Logo
5:49 pm - 2:50 pmSTL-KIX
31h 01m1 stop
 Logo
4:50 pm - 4:42 pmKIX-STL
37h 52m1 stop
Sat, Sep 20 - Sun, Sep 28
Japan Airlines Logo
8:26 am - 8:25 amSTL-KIX
33h 59m2 stops
Japan Airlines Logo
5:55 pm - 10:59 pmKIX-STL
19h 04m1 stop
$985Japan Airlines
Find Deal
Mon, Jul 7 - Mon, Sep 8
Japan Airlines Logo
7:23 am - 2:15 pmSTL-KIX
40h 52m2 stops
Japan Airlines Logo
5:55 pm - 10:59 pmKIX-STL
19h 04m1 stop
$1,015Japan Airlines
Find Deal
Mon, Jul 7 - Mon, Sep 8
American Airlines Logo
8:50 am - 6:45 pmSTL-KIX
19h 55m1 stop
American Airlines Logo
5:55 pm - 10:59 pmKIX-STL
19h 04m1 stop
$1,155American Airlines
Find Deal
Mon, Jul 7 - Mon, Sep 8
 Logo
8:43 am - 2:15 pmSTL-KIX
39h 32m2 stops
 Logo
11:50 am - 12:36 pmKIX-STL
38h 46m3 stops
$1,401
Find Deal
Sat, Jun 14 - Sat, Jun 28
Delta Logo
3:42 pm - 11:20 amSTL-KIX
29h 38m2 stops
Delta Logo
6:20 pm - 11:01 pmKIX-STL
42h 41m2 stops
$1,682Delta
Find Deal
Sun, Jun 29 - Sun, Aug 10
American Airlines Logo
6:28 am - 6:45 pmSTL-KIX
22h 17m1 stop
American Airlines Logo
5:55 pm - 10:59 pmKIX-STL
19h 04m1 stop
$1,712American Airlines
Find Deal
Sat, Jun 14 - Sat, Jun 28
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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 Air Canada ($785) and Delta ($888).

Good to know

Low seasonSeptember
High seasonMay
Cheapest flight$785
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly with an average 39% 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 $785 for a round-trip ticket.

  • 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?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Osaka, with oneworld being the most commonly used for this route.

  • 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.

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 1459 reviews
7.8Entertainment
8.2Comfort
8.4Boarding
8.7Crew
7.7Food
Airline reviews

JAL using the state of art A350-1000 for JFK to HND It’s a great plane to fly Very comfortable with lower cabin altitude Quieter cabin Wider seats Big tv screen Excellent service and catering

10.0 ExcellentAnonymous, Apr 2025FUK - HND
Read more Japan Airlines reviews

JAL using the state of art A350-1000 for JFK to HND It’s a great plane to fly Very comfortable with lower cabin altitude Quieter cabin Wider seats Big tv screen Excellent service and catering

I fly to Asia twice a year for the last 15 years. I always try to fly JAL. It’s always a pleasant experience. Since TripCase shut down, this is the first time I used Kayak for live trip notifications. I was very pleased with Kayak’s quality and helpfulness of notifications. I will be using them going forward.

This flight was leg 2 of 2 leg journey. The staff at baggage re-drop in Tokyo were fabulous. Once at gate when time to board, had to take standing room bus to the tarmac to board. Did not like getting out to plane and having to wait 5 minutes until they opened bus door.

First experience with JAL so was okay to pretty good. 10 hour flight in premium select seat. . Seats in that category should be better than pretty good. Seat pan a little short for tall people but plenty of leg room; I think JAL in process of new planes? Also, — they could have offered a bit more water throughout flight and meals not the greatest. That said, certainly 200 percent better than a very recent AK Air International flight in similar cabin class in comfort and meals.

It's a domestic flight, but still the JAL quality shone through. The crew were polite and helpful and even prepared little gifts / souvenirs for the children on the flight, and everyone got a simple drink. The free wifi for entertainment on the personal device was also a great boon, and the shows surprisingly decent. Would recommend.

We ordered for non vegetarian Hindu meal but instead they served us vegetarian Hindu meal. That was also not good. It was very annoying and aggravating. Hope our return from Tokyo to jfk on March 27 same is not repeated. Caterar should understand difference between non vegetarian Hindu meal and vegetarian Hindu meal.

Allow gold card holders (Group 1) to board with their guest like other One World carriers do

Checked baggage process is confusing and time consuming especially when checking oversized bags. Very slow agents didn't help.

Food was great, Entertainment was bad, movies were not current and just did not have good variety. Granted I was tired so cranky might have played into my evaluation. Overall based on cost I definitely would fly them again. I am a million mile flyer on another airline, the service on JAL really beats all airlines.

The team members are extremely attentive to make sure you have the best experience.

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

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