$374 Cheap flight deals from St. Louis (STL) to Osaka (OSA)

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Airfares from $374 One Way, $834 Round Trip from St. Louis to Osaka

Prices starting at $834 for return flights and $374 for one-way flights to Osaka were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 22 - Wed, Sep 30
STL
St. Louis
KIX
Osaka
$834 Roundtrip, found 2 days ago
$834
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Sep 22 from St. Louis to Osaka, returning Wed, Sep 30, priced at $834 found 2 days ago
Wed, Nov 18 - Wed, Nov 25
STL
St. Louis
ITM
Osaka
$853 Roundtrip, found 3 days ago
$853
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 18 from St. Louis to Osaka, returning Wed, Nov 25, priced at $853 found 3 days ago
Wed, Apr 22 - Wed, May 6
STL
St. Louis
ITM
Osaka
$867 Roundtrip, found 1 day ago
$867
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Wed, Apr 22 from St. Louis to Osaka, returning Wed, May 6, priced at $867 found 1 day ago
Tue, Feb 10 - Tue, Feb 17
STL
St. Louis
KIX
Osaka
$867 Roundtrip, found 1 day ago
$867
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Tue, Feb 10 from St. Louis to Osaka, returning Tue, Feb 17, priced at $867 found 1 day ago
Wed, Sep 2 - Wed, Sep 9
STL
St. Louis
UKB
Kobe
$877 Roundtrip, found 3 days ago
$877
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Wed, Sep 2 from St. Louis to Kobe, returning Wed, Sep 9, priced at $877 found 3 days ago

Osaka economy flight packages

Price found within the past 48 hours. Click for updated prices.
Just Sleep Osaka Shinsaibashi
3.0-star property

Just Sleep Osaka Shinsaibashi

9/10 Wonderful! (44 reviews)

Feb 13 - Feb 15

2 night stay

St. Louis (STL) to Osaka (KIX)

Japan Airlines • Roundtrip • Coach
Price was $1,246, price is now $1,100 per person
$1,100
per person
found 15 hours ago
Hotel Keihan Universal Tower
4.0-star property

Hotel Keihan Universal Tower

9/10 Wonderful! (1,050 reviews)

Feb 13 - Feb 15

2 night stay

St. Louis (STL) to Osaka (KIX)

Japan Airlines • Roundtrip • Coach
Price was $1,432, price is now $1,154 per person
$1,154
per person
found 15 hours ago
Staff was #1. Such a great experience with the, Great clean comfortable room with amazing amenties/appliances in the bathroom (REFA appliances too).

Reviewed on Dec 1, 2025

Hotel Monterey Grasmere Osaka
4.0-star property

Hotel Monterey Grasmere Osaka

9/10 Wonderful! (1,573 reviews)

Feb 13 - Feb 15

2 night stay

St. Louis (STL) to Osaka (KIX)

Japan Airlines • Roundtrip • Coach
Price was $1,421, price is now $1,175 per person
$1,175
per person
found 15 hours ago
Very clean. Great city view. Spacious. All amenities provided. Cute little European style chapel inside the hotel. Best hotel I’ve stayed in while visiting Japan.

Reviewed on May 25, 2025

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More About Flying To Osaka from St. Louis

Route Information for Flights from St. Louis to Osaka

Origin Airport IATA Code
STL
Destination Airport IATA Code
OSA
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to Osaka

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Frequently asked questions

What is the shortest flight from St. Louis to Osaka?
With a minimum flight duration of 16 hours and 29 minutes, you'll want to be as comfortable as possible. Collected some nice air points? Think about using them to upgrade to a seat with more room on your St. Louis to Osaka trip.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

More Destinations

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.