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Osaka

$432+ Cheap flights from St. Louis (STL) to Osaka (OSA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OSA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from St. Louis to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Osaka (OSA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,136
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$874
Provider with most accurate pricing for Lambert-St Louis-Osaka (OSA) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Osaka (OSA) flights.
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From Lambert-St Louis to Osaka (OSA)
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Highest demand for flights based on searches. 31% potential increase in price ($613 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($90 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from St. Louis to Osaka

Cheapest flights from St. Louis to Osaka
Explore the most affordable flight options available from St. Louis to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This FlightHub deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:00 amSTL - KIX
1 stop21h 55mJapan Airlines
Sun 11/165:50 pmKIX - STL
1 stop21h 07mJapan Airlines
Deal found 1/20$708
This United deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2911:00 amSTL - KIX
2 stops37h 50mMultiple Airlines
Thu 5/157:00 amKIX - STL
2 stops24h 09mMultiple Airlines
Deal found 1/19$709
This Gotogate deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/199:47 amSTL - ITM
2 stops20h 43mJapan Airlines
Thu 10/308:30 amITM - STL
2 stops18h 29mJapan Airlines
Deal found 1/20$711
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/197:00 amSTL - KIX
1 stop21h 55mAmerican Airlines
Thu 10/305:50 pmKIX - STL
1 stop19h 03mAmerican Airlines
Deal found 1/20$712
This Booking.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/296:15 amSTL - KIX
2 stops26h 05mANA
Thu 5/153:40 pmKIX - STL
2 stops37h 07mANA
Deal found 1/20$719
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/294:45 pmSTL - KIX
2 stops32h 05mUnited Airlines
Thu 5/154:50 pmKIX - STL
1 stop19h 55mUnited Airlines
Deal found 1/20$720
This Justfly.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:15 amSTL - ITM
2 stops21h 55mANA
Thu 9/117:30 amITM - STL
2 stops23h 05mANA
Deal found 1/20$819
This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/268:10 amSTL - ITM
2 stops34h 55mMultiple Airlines
Mon 6/231:00 pmITM - STL
2 stops40h 16mMultiple Airlines
Deal found 1/19$974
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/297:33 amSTL - ITM
2 stops21h 32mAmerican Airlines
Fri 8/87:20 amITM - STL
2 stops19h 35mAmerican Airlines
Deal found 1/21$1,145
This Priceline deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/204:05 pmSTL - KIX
2 stops34h 20mAir Canada
Wed 6/46:05 pmKIX - STL
1 stop35h 11mAir Canada
Deal found 1/21$1,308
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/125:33 pmSTL - ITM
2 stops57h 32mUnited Airlines
Sat 4/2612:00 pmITM - STL
2 stops46h 56mUnited Airlines
Deal found 1/21$1,408
This Gurufare deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/57:00 amSTL - KIX
3 stops41h 55mCathay Pacific
Thu 9/1110:00 amKIX - STL
2 stops26h 59mCathay Pacific
Deal found 1/20$1,536

Find flights from St. Louis to Osaka within your budget

Customize your flight search to find flights from St. Louis to Osaka that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 5/20

7:28 am-10:10 pm

2 stops24h 42m

Osaka Kansai Intl

Wed 6/4

6:40 am-4:15 pm

2 stops23h 35m

$1,105

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 5/19

3:43 pm-10:20 pm

2 stops40h 37m

Osaka Kansai Intl

Tue 6/3

3:40 pm-2:53 pm

2 stops37h 13m

$1,125

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 3/1

9:00 am-4:35 pm

1 stop40h 35m

Osaka Kansai Intl

Sun 3/16

6:30 pm-9:34 pm

2 stops41h 04m

$1,136

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Tue 5/20

4:05 pm-4:25 pm

2 stops34h 20m

Osaka Kansai Intl

Wed 6/4

6:05 pm-2:53 pm

2 stops34h 48m

$1,295

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Mon 5/19

3:43 pm-3:05 pm

2 stops33h 22m

Osaka Itami

Tue 6/3

8:20 pm-12:20 pm

2 stops30h 00m

$1,358

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Fri 3/21

3:11 pm-9:40 am

2 stops52h 29m

Osaka Kansai Intl

Fri 3/28

9:00 am-11:59 pm

2 stops28h 59m

$1,363

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Sat 4/12

5:33 pm-5:05 pm

2 stops57h 32m

Osaka Itami

Sat 4/26

12:00 pm-8:56 pm

2 stops46h 56m

$1,408

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

Tue 5/20

7:28 am-5:35 pm

2 stops20h 07m

Osaka Itami

Wed 6/4

8:30 am-4:15 pm

2 stops21h 45m

$1,435

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Sat 3/1

6:10 am-6:20 am

2 stops33h 10m

Osaka Kansai Intl

Sun 3/16

4:05 pm-11:09 pm

3 stops45h 04m

$1,539

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

Mon 5/19

8:15 am-6:55 pm

2 stops20h 40m

Osaka Kansai Intl

Tue 6/3

5:45 pm-11:11 pm

1 stop19h 26m

$2,401

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 18 results
1
2

Compare providers for flights from St. Louis to Osaka

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Osaka in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Osaka flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Osaka flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Osaka flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Osaka flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Osaka flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Osaka

Have a flexible travel schedule? Discover the best time to fly to Osaka from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Osaka

Get recent, data-driven insights about flights from St. Louis to Osaka including ideal travel times, pricing trends, and more.

Rainfall in Osaka by month

Plan your trip to Osaka by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Osaka ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka when rainfall is around 1.6 in.

Temperature in Osaka by month

Plan your trip to Osaka by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Osaka, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Osaka. Reviews last updated January 21, 2025.
See what other customers who have flown with United Airlines and ANA from St. Louis to Osaka have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
852 reviews

Crew

8.7

Overall

8.4

Food

7.7

Boarding

8.6

Comfort

8.2

Entertainment

7.9

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

ANA
8.4
Very good
852 reviews
ANA
8.4
Very good
852 reviews

Crew

8.7

Overall

8.4

Food

7.7

Boarding

8.6

Comfort

8.2

Entertainment

7.9

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Japan Airlines
8.3
Very good
1,449 reviews
ANA
8.4
Very good
852 reviews

Crew

8.7

Overall

8.4

Food

7.7

Boarding

8.6

Comfort

8.2

Entertainment

7.9

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Qatar Airways
7.5
Good
3,752 reviews
ANA
8.4
Very good
852 reviews

Crew

8.7

Overall

8.4

Food

7.7

Boarding

8.6

Comfort

8.2

Entertainment

7.9

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Cathay Pacific
7.5
Good
830 reviews
ANA
8.4
Very good
852 reviews

Crew

8.7

Overall

8.4

Food

7.7

Boarding

8.6

Comfort

8.2

Entertainment

7.9

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

United Airlines
7.4
Good
8,985 reviews
ANA
8.4
Very good
852 reviews

Crew

8.7

Overall

8.4

Food

7.7

Boarding

8.6

Comfort

8.2

Entertainment

7.9

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Osaka. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Osaka?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Osaka from St. Louis. Booking flights from Lambert-St Louis (STL) to Osaka should be relatively easy as there are 0 daily outbound flights to Osaka from 2 different airlines.

  • What are the cheapest airlines flying from St. Louis to Osaka round-trip?

    According to our current data, United Airlines ($1,136), ANA ($1,187), and Cathay Pacific ($1,541) offers the cheapest pricing from St. Louis to Osaka. Users have found that United Airlines is 16% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from St. Louis to Osaka one-way?

    $13,398 is the cheapest one-way deal found within the past few days, from Japan Airlines. You may also be able to find cheap deals on ANA and Cathay Pacific, with prices starting from $14,018 and $14,190, respectively.

  • Can I find deals for flights from St. Louis to Osaka that include hotel bookings?

    Yes. In addition to deals on St. Louis to Osaka flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Osaka?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Osaka.

  • Can I find deals for business class flights from St. Louis to Osaka?

    Yes. Cheapflights offers flight deals from St. Louis to Osaka by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Osaka?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Osaka (average of $950). Flying from St. Louis to Osaka in December is currently the most expensive (average of $1,366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Nara
Nishinomiya

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Alternative routes for St. Louis to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Itami flights
Kansas City to Kansai Intl flights
St. Louis to Kansai Intl flights

Top 2 airlines flying from St. Louis to Osaka

Discover the top 2 airlines that operate flights from St. Louis to Osaka. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$723Average$1,214FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$778Average$1,861FlexibilityNo cancel feeOn-time69%
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