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Cheap Flights from St Louis (STL) to Osaka (OSAA)

Compare St Louis to Osaka flight deals

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Flight deals from St Louis to Osaka

Looking for a cheap last-minute deal or the best return flight from St Louis to Osaka? Find the lowest prices on one-way and return tickets right here.
Osaka.$1,657 per passenger.Departing Fri, 25 Sep, returning Wed, 30 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Fri, 25 Sep, arriving in Kansai International (Osaka).Inbound indirect flight with Air Canada, departs from Kansai International (Osaka) on Wed, 30 Sep, arriving in St Louis.Price includes taxes and charges.From $1,657, select.
Osaka.$1,706 per passenger.Departing Wed, 30 Sep, returning Fri, 9 Oct.Return flight with United.Outbound indirect flight with United, departs from St Louis on Wed, 30 Sep, arriving in Kansai International (Osaka).Inbound indirect flight with United, departs from Kansai International (Osaka) on Fri, 9 Oct, arriving in St Louis.Price includes taxes and charges.From $1,706, select.
Osaka.$1,801 per passenger.Departing Wed, 2 Dec, returning Wed, 9 Dec.Return flight with Japan Airlines.Outbound indirect flight with Japan Airlines, departs from St Louis on Wed, 2 Dec, arriving in Kansai International (Osaka).Inbound indirect flight with Japan Airlines, departs from Kansai International (Osaka) on Wed, 9 Dec, arriving in St Louis.Price includes taxes and charges.From $1,801, select.
Osaka.$1,816 per passenger.Departing Fri, 14 Aug, returning Fri, 21 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Fri, 14 Aug, arriving in Kansai International (Osaka).Inbound indirect flight with Air Canada, departs from Itami Domestic (Osaka) on Fri, 21 Aug, arriving in St Louis.Price includes taxes and charges.From $1,816, select.
Osaka.$2,001 per passenger.Departing Thu, 1 Oct, returning Wed, 7 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Thu, 1 Oct, arriving in Kansai International (Osaka).Inbound indirect flight with Air Canada, departs from Kansai International (Osaka) on Wed, 7 Oct, arriving in St Louis.Price includes taxes and charges.From $2,001, select.
Osaka.$2,160 per passenger.Departing Mon, 12 Apr, returning Mon, 26 Apr.Return flight with Alaska Airlines and EVA Air.Outbound indirect flight with Alaska Airlines, departs from St Louis on Mon, 12 Apr, arriving in Kansai International (Osaka).Inbound indirect flight with EVA Air, departs from Kansai International (Osaka) on Mon, 26 Apr, arriving in St Louis.Price includes taxes and charges.From $2,160, select.
Osaka.$2,187 per passenger.Departing Fri, 5 Feb, returning Sun, 14 Feb.Return flight with Japan Airlines.Outbound indirect flight with Japan Airlines, departs from St Louis on Fri, 5 Feb, arriving in Itami Domestic (Osaka).Inbound indirect flight with Japan Airlines, departs from Itami Domestic (Osaka) on Sun, 14 Feb, arriving in St Louis.Price includes taxes and charges.From $2,187, select.
Osaka.$3,116 per passenger.Departing Sun, 26 Jul, returning Sat, 1 Aug.Return flight with Alaska Airlines and EVA Air.Outbound indirect flight with Alaska Airlines, departs from St Louis on Sun, 26 Jul, arriving in Kansai International (Osaka).Inbound indirect flight with EVA Air, departs from Kansai International (Osaka) on Sat, 1 Aug, arriving in St Louis.Price includes taxes and charges.From $3,116, select.
Osaka.$3,416 per passenger.Departing Wed, 25 Nov, returning Mon, 30 Nov.Return flight with Japan Airlines.Outbound indirect flight with Japan Airlines, departs from St Louis on Wed, 25 Nov, arriving in Kansai International (Osaka).Inbound indirect flight with Japan Airlines, departs from Kansai International (Osaka) on Mon, 30 Nov, arriving in St Louis.Price includes taxes and charges.From $3,416, select.

Find the cheapest month to fly from St Louis to Osaka

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Osaka flights are currently cheapest in September.
Jun
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Jul
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Aug
from $1,816
Sep
from $1,657
Oct
from $2,001
Nov
from $3,416
Dec
from $1,801
Jan
Find prices
Feb
from $2,187
Mar
Find prices
Apr
from $2,160
May
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Alternative St Louis to Osaka routes

Looking for the cheapest, fastest or easiest route from St Louis to Osaka? You could fly into the following airports instead.

Itami Domestic (Osaka)

11km from central Osaka
Closest
from $1,973
Search flights

Kobe

26km from central Osaka
from $2,294
Search flights

Kansai International (Osaka)

38km from central Osaka
Cheapest
from $1,657
Search flights

St Louis to Osaka: Flight information

The things to know before you go.
Cheapest flight found$1,657
Cheapest month to flySeptember

Finding cheap flights from St Louis to Osaka: Frequently asked questions

There are 3 airports in Osaka: Itami Domestic (Osaka), Kobe and Kansai International (Osaka).
The best price we found for a return flight from St Louis to Osaka is $1,657. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Osaka. But we found flights with one or more stops from $1,657.
As of June 2026, there are no flights flying from St Louis to Osaka.
The cheapest month to fly from St Louis to Osaka is usually September.
If you're flying from St Louis Airport, the cheapest airport near Osaka is Kansai International (Osaka) – which is 38.0 km away from the centre of Osaka. We've found flights into this airport from $1,657.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Osaka on Friday, 25 September 2026.
No airlines currently offer direct flights between St Louis Airport and Osaka. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Osaka but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Osaka is around 40 days in advance, so don’t leave your flight to the last minute.

In June, the average temperature is usually around 21°C. August is typically the warmest month in Osaka, when it usually averages around 30°C. You can expect the least rain in December. The coldest month is January, with temperatures averaging 0°C. The rainiest month is June.
Currently, Air Canada offers the cheapest flight tickets to Osaka.

Flying from St Louis Lambert International Airport (STL) to Osaka: what you need to know

  • The timezone in Osaka is UTC+9. The city is 15 hours ahead of St Louis, where St Louis Lambert International Airport is located.

  • To avoid missing your STL to Osaka flight, leave plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Flying during a popular month such as July? School holidays and other popular seasons can lead to longer queues at security. Be extra cautious and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • Finding a plane ticket from STL to Osaka with a stopover is a breeze. Whether you'd like to cut down on travel expenses or explore a new city, just uncheck 'Direct flights only' to see your options. A top stop on this route is Los Angeles International Airport (LAX).

  • The journey from central St Louis to STL takes around 30 minutes by public transport. If you drive, ride-share or take a taxi, you'll cover the 16 kilometres in 25 minutes or so, depending on traffic conditions.

  • In search of a hotel near STL? If you've booked an early flight from St Louis Lambert International Airport to Osaka, these accommodation options set you up for a seamless send-off:

  • Of the flights that depart from St Louis Lambert International Airport, 76% land on schedule at their destination.

  • You'll find STL at 10701 Lambert International Blvd..

How to find the cheapest flights from St Louis Lambert International Airport (STL) to Osaka

  • $755 is currently the lowest price for a one-way St Louis Lambert International Airport to Osaka flight. Return plane tickets start at $1,657. These prices can change based on availability.

  • Don't wait until the last moment. You're more likely to pick up cheap flights from STL to Osaka if you book in advance. Airlines often offer some fantastic early bird deals.

  • If you can be flexible with your travel plans, check out the 'Whole month' search tool. It'll show you the cheapest price across every month when searching for a St Louis Lambert International Airport to Osaka ticket.

  • You don't need to keep looking every day to see if fares have dropped when you set up a Price Alert. We'll let you know as soon as there's an updated deal for cheap flights from STL to Osaka.

  • Tailor your flights with filters. Pick your arrival and departure times, total journey duration and airlines. You can also sort results by 'Cheapest,' 'Fastest' or 'Best' flights from St Louis Lambert International Airport to Osaka.

Airports in Osaka

Kansai International Airport (KIX)

  • The distance from Kansai International Airport (KIX) to central Osaka is roughly 48 kilometres. It takes about 50 minutes to get to the centre driving.

  • Getting there by public transport typically takes 45 minutes.

  • If you're arriving on a late flight from St Louis Lambert International Airport to Osaka, nothing beats the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and snoozing not long after at one of these accommodation options near KIX:

  • Reserve your ride from Kansai International Airport a few weeks ahead of your flight from STL to Osaka. If you're planning to travel during a peak period, book even earlier to secure the best deal.

  • KIX is located at 1 Senshukukokita, Izumisano.

Osaka Itami International Airport (ITM)

  • Osaka Itami International Airport (ITM) is around 18 kilometres from the centre of Osaka. Following your flight from St Louis Lambert International Airport to Osaka, it'll take you around 30 minutes to get to the heart of the city in a ride-share or taxi.

  • If you travel by public transport, the ride to the centre takes 35 minutes or so.

  • You'll find some comfortable places to park your luggage (and yourself) near ITM. Tuck yourself in and get cosy after your STL to Osaka flight at any of these perfectly located options:

  • In general, the earlier you book, the better the deals and selection of vehicles. Lock in your ride from ITM as soon as you know your dates.

  • You'll find Osaka Itami International Airport at 3丁目555 Nishimachi, Hotarugaike, Toyonaka.

Kobe Airport (UKB)

  • Hop off your flight from St Louis Lambert International Airport to Osaka and head straight for your hotel or jump right into exploring. The centre of Osaka is around 32 kilometres from Kobe Airport (UKB) and typically takes 40 minutes to reach driving.

  • The journey takes roughly 50 minutes when travelling by public transport.

  • Enjoy a restful, unhurried start to your trip by choosing a hotel near UKB after your STL to Osaka flight. Rest up after a long day of travel or simply give yourself time to find your footing in a new city at:

  • If you prefer a particular make or model, booking early gives you a better shot at snagging what you want. Reserve your ride from UKB a couple of weeks ahead of your flight from St Louis Lambert International Airport to Osaka.

  • Kobe Airport can be found at 1 Kobekuko, Chuo Ward.

Best time to go to Osaka

  • April is the most popular month for flights from St Louis Lambert International Airport to Osaka. To skip the crowds, visit Osaka in December.

  • The warmest month in Osaka is August, with temperatures ranging between 21ºC (70ºF) and 34ºC (93ºF). Lock in your St Louis Lambert International Airport to Osaka plane ticket then if you enjoy this type of weather.

  • If you like travelling in cooler conditions, search for a cheap ticket from STL to Osaka in January when temperatures average between 0ºC (32ºF) and 10ºC (50ºF).

More about Osaka

Explore more of Japan

  • You've done Osaka, now it's time to explore other parts of Japan. Journey around 402 kilometres east to Tokyo to check off its leading sights. From Tokyo Skytree to Sensho-ji and Ginza Central Street, you'll have a packed itinerary ahead.

  • Nagoya is another favourite destination in Japan and is around 137 kilometres northeast of Osaka. No trip is complete without experiencing Nagoya Castle, Ninomaru Garden and Sky Promenade.

Plan the rest of your trip from St Louis to Osaka

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.