How long is the flight from St. Louis to Osaka?

For as low as $735, Air Canada can have you in Osaka from St. Louis in 32h 40m. Airlines will cover a distance of 6595 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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.

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).

What is the cheapest time of day to fly from STL to OSA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Osaka as you normally would.

Most accurate provider : When it comes to deals on St. Louis-Osaka flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Osaka flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 0 different airlines.

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.

$354+ Flights from St. Louis to Osaka

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Cheap 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 diciembre 12, 2025.

mar. 12/236:41 amSTL - KIX

1 stop18h 59mUnited Airlines

jue. 1/86:35 pmKIX - STL

1 stop25h 36mUnited Airlines

Deal found 12/11

$2,391

mar. 12/236:41 amSTL - KIX

1 stop18h 59mUnited Airlines

vie. 1/98:20 amKIX - STL

2 stops27h 38mUnited Airlines

Deal found 12/11

$2,394

lun. 12/225:02 pmSTL - KIX

2 stops32h 38mUnited Airlines

jue. 1/86:35 pmKIX - STL

2 stops31h 27mUnited Airlines

Deal found 12/11

$2,395

lun. 12/226:35 pmSTL - KIX

2 stops31h 05mUnited Airlines

mié. 1/78:20 amKIX - STL

2 stops23h 35mUnited Airlines

Deal found 12/11

$2,399

mar. 12/236:41 amSTL - KIX

1 stop18h 59mUnited Airlines

sáb. 1/108:20 amKIX - STL

2 stops27h 38mUnited Airlines

Deal found 12/11

$2,444

lun. 12/226:35 pmSTL - KIX

2 stops31h 05mUnited Airlines

sáb. 1/106:35 pmKIX - STL

2 stops33h 41mUnited Airlines

Deal found 12/11

$2,445

dom. 12/215:59 pmSTL - KIX

2 stops35h 46mDelta

jue. 1/811:55 amKIX - STL

2 stops26h 30mDelta

Deal found 12/11

$2,503

mar. 12/236:41 amSTL - KIX

1 stop18h 59mUnited Airlines

mar. 1/68:20 amKIX - STL

2 stops26h 07mUnited Airlines

Deal found 12/11

$2,569

dom. 12/216:35 pmSTL - KIX

2 stops33h 50mUnited Airlines

jue. 1/86:35 pmKIX - STL

1 stop25h 36mUnited Airlines

Deal found 12/11

$2,705

dom. 12/216:35 pmSTL - KIX

2 stops33h 50mUnited Airlines

mié. 1/78:20 amKIX - STL

2 stops23h 35mUnited Airlines

Deal found 12/11

$2,709

dom. 12/216:35 pmSTL - KIX

2 stops33h 50mUnited Airlines

sáb. 1/108:20 amKIX - STL

2 stops27h 38mUnited Airlines

Deal found 12/11

$2,759

lun. 12/226:29 amSTL - KIX

2 stops45h 11mKorean Air

mar. 1/611:55 amKIX - STL

2 stops26h 30mKorean Air

Deal found 12/11

$2,866

Best flights from St. Louis to Osaka
Discover carefully curated flight deals from St. Louis to Osaka that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

mar. 2/34:05 pmSTL - ITM

2 stops37h 15mAir Canada

jue. 2/194:00 pmITM - STL

2 stops38h 29mAir Canada

Deal found 12/10

$701

lun. 2/25:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

mar. 2/178:20 amKIX - STL

2 stops27h 03mUnited Airlines

Deal found 12/11

$735

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

mié. 2/188:20 amKIX - STL

2 stops27h 45mUnited Airlines

Deal found 12/11

$735

dom. 2/154:05 pmSTL - ITM

2 stops37h 15mAir Canada

jue. 2/194:00 pmITM - STL

2 stops38h 29mAir Canada

Deal found 12/10

$736

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

mar. 2/178:20 amKIX - STL

2 stops27h 03mUnited Airlines

Deal found 12/11

$735

dom. 2/16:45 amSTL - KIX

1 stop18h 55mUnited Airlines

mar. 2/178:20 amKIX - STL

2 stops27h 03mUnited Airlines

Deal found 12/11

$735

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

jue. 2/198:20 amKIX - STL

2 stops27h 03mUnited Airlines

Deal found 12/11

$735

dom. 2/16:45 amSTL - KIX

2 stops21h 40mUnited Airlines

mié. 2/188:20 amKIX - STL

2 stops23h 24mUnited Airlines

Deal found 12/11

$742

dom. 2/16:45 amSTL - KIX

2 stops21h 40mUnited Airlines

vie. 2/208:20 amKIX - STL

2 stops22h 18mUnited Airlines

Deal found 12/11

$742

dom. 2/16:45 amSTL - KIX

1 stop18h 55mUnited Airlines

jue. 2/198:20 amKIX - STL

2 stops28h 40mUnited Airlines

Deal found 12/10

$744

lun. 2/211:20 amSTL - ITM

2 stops39h 50mUnited Airlines

mar. 2/171:00 pmITM - STL

2 stops21h 14mUnited Airlines

Deal found 12/11

$748

mar. 2/39:57 amSTL - ITM

2 stops41h 13mUnited Airlines

mar. 2/171:00 pmITM - STL

2 stops24h 00mUnited Airlines

Deal found 12/10

$748

dom. 2/16:30 amSTL - ITM

2 stops44h 40mUnited Airlines

mar. 2/171:00 pmITM - STL

2 stops21h 14mUnited Airlines

Deal found 12/11

$748

sáb. 1/314:42 pmSTL - KIX

2 stops32h 58mUnited Airlines

vie. 2/208:20 amKIX - STL

2 stops27h 45mUnited Airlines

Deal found 12/11

$749

lun. 2/24:35 pmSTL - KIX

2 stops33h 05mUnited Airlines

vie. 2/208:20 amKIX - STL

2 stops29h 39mUnited Airlines

Deal found 12/10

$749

Last-minute flights from St. Louis to Osaka
Discover last-minute flight deals from St. Louis to Osaka. Data last updated diciembre 12, 2025 and is based on user searches.

dom. 1/252:50 pmSTL - ITM

2 stops38h 05mMultiple Airlines

dom. 2/12:40 pmITM - STL

2 stops38h 14mMultiple Airlines

Deal found 12/11

$887

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

mié. 2/186:35 pmKIX - STL

2 stops29h 48mUnited Airlines

Deal found 12/11

$733

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

jue. 2/198:20 amKIX - STL

2 stops27h 03mUnited Airlines

Deal found 12/11

$735

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

vie. 2/208:20 amKIX - STL

2 stops22h 18mUnited Airlines

Deal found 12/11

$736

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

mar. 2/178:20 amKIX - STL

2 stops28h 20mUnited Airlines

Deal found 12/11

$752

sáb. 1/318:30 amSTL - ITM

2 stops42h 40mUnited Airlines

mar. 2/171:00 pmITM - STL

2 stops23h 05mUnited Airlines

Deal found 12/11

$754

sáb. 1/315:00 pmSTL - KIX

1 stop32h 40mUnited Airlines

lun. 2/168:20 amKIX - STL

2 stops27h 45mUnited Airlines

Deal found 12/11

$756

sáb. 1/314:05 pmSTL - ITM

2 stops36h 05mAir Canada

mié. 2/183:00 pmITM - STL

2 stops39h 29mAir Canada

Deal found 12/11

$817

sáb. 1/314:05 pmSTL - ITM

2 stops36h 05mAir Canada

mar. 2/174:00 pmITM - STL

2 stops38h 29mAir Canada

Deal found 12/11

$818

sáb. 1/314:05 pmSTL - ITM

2 stops37h 15mAir Canada

vie. 2/202:00 pmITM - STL

2 stops40h 29mAir Canada

Deal found 12/11

$823

sáb. 1/3111:05 amSTL - ITM

2 stops37h 35mJapan Airlines

dom. 2/228:10 pmITM - STL

2 stops32h 44mJapan Airlines

Deal found 12/10

$842

sáb. 1/3111:05 amSTL - ITM

2 stops32h 40mJapan Airlines

mié. 2/188:30 amITM - STL

2 stops20h 24mJapan Airlines

Deal found 12/11

$863

One-way flights from St. Louis to Osaka
Search for one-way flight options from St. Louis to Osaka. Find affordable one-way fares based on user searches. Data last updated diciembre 12, 2025.

dom. 2/154:05 pmSTL - ITM

2 stops36h 05mMultiple Airlines

Deal found 12/11

$354

dom. 2/154:05 pmSTL - KIX

2 stops36h 20mMultiple Airlines

Deal found 12/11

$355

mié. 2/186:00 amSTL - KIX

2 stops22h 25mANA

Deal found 12/10

$380

mié. 2/186:30 amSTL - KIX

1 stop21h 20mJapan Airlines

Deal found 12/10

$423

dom. 2/156:30 amSTL - KIX

1 stop21h 20mJapan Airlines

Deal found 12/11

$475

sáb. 3/72:26 pmSTL - ITM

2 stops38h 24mJapan Airlines

Deal found 12/11

$513

sáb. 3/74:05 pmSTL - KIX

2 stops34h 35mAir Canada

Deal found 12/11

$563

jue. 1/16:00 amSTL - ITM

2 stops22h 20mJapan Airlines

Deal found 12/9

$604

jue. 1/16:00 amSTL - KIX

2 stops25h 20mJapan Airlines

Deal found 12/9

$605

mié. 2/186:30 amSTL - KIX

3 stops41h 25mCathay Pacific

Deal found 12/10

$679

jue. 1/16:41 amSTL - KIX

1 stop18h 59mUnited Airlines

Deal found 12/9

$710

sáb. 3/76:30 amSTL - KIX

1 stop21h 20mJapan Airlines

Deal found 12/10

$720

Find flight deals from St. Louis to Osaka

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$690 (Flysmarter)
One-way from	$354 (Air Canada)
Popular in	May
Cheapest in	September
Average price	$1,578

Provider with most accurate pricing for Lambert-St Louis-Osaka (OSA) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Osaka (OSA) flights.

Search Deals

From Lambert-St Louis to Osaka (OSA)

Search Deals

One-way flight from Lambert-St Louis to Osaka (OSA)

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($222 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($59 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

mar. 2/3

4:05 pm-8:20 pm

2 stops37h 15m

Osaka Itami

jue. 2/19

4:00 pm-3:29 pm

2 stops38h 29m

$701

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

lun. 2/2

5:00 pm-4:40 pm

1 stop32h 40m

Osaka Kansai Intl

mar. 2/17

8:20 am-8:23 pm

2 stops27h 03m

$735

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

sáb. 1/31

5:00 pm-4:40 pm

1 stop32h 40m

Osaka Kansai Intl

mié. 2/18

8:20 am-9:05 pm

2 stops27h 45m

$735

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

sáb. 1/31

5:00 pm-4:40 pm

1 stop32h 40m

Osaka Kansai Intl

mar. 2/17

8:20 am-8:23 pm

2 stops27h 03m

$735

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

dom. 2/1

6:45 am-4:40 pm

1 stop18h 55m

Osaka Kansai Intl

mar. 2/17

8:20 am-8:23 pm

2 stops27h 03m

$735

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

sáb. 1/31

5:00 pm-4:40 pm

1 stop32h 40m

Osaka Kansai Intl

jue. 2/19

8:20 am-8:23 pm

2 stops27h 03m

$735

St. LouisOsaka

STL - ITM

STLITM

Lambert-St Louis

dom. 2/15

4:05 pm-8:20 pm

2 stops37h 15m

Osaka Itami

jue. 2/19

4:00 pm-3:29 pm

2 stops38h 29m

$736

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

dom. 2/1

6:45 am-7:25 pm

2 stops21h 40m

Osaka Kansai Intl

mié. 2/18

8:20 am-4:44 pm

2 stops23h 24m

$742

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

dom. 2/1

6:45 am-7:25 pm

2 stops21h 40m

Osaka Kansai Intl

vie. 2/20

8:20 am-3:38 pm

2 stops22h 18m

$742

St. LouisOsaka

STL - KIX

STLKIX

Lambert-St Louis

dom. 2/1

6:45 am-4:40 pm

1 stop18h 55m

Osaka Kansai Intl

jue. 2/19

8:20 am-10:00 pm

2 stops28h 40m

$744

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 29 results

Compare providers for flights from St. Louis to Osaka

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 December.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Osaka flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Osaka

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Osaka

Read through reviews of airlines operating flights from St. Louis to Osaka, such as ANA, Japan Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

ANA

8.4

Very good

1,021 reviews

Reviews

1 / 20

10.0

Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.

ANA

8.4

Very good

1,021 reviews

ANA

8.4

Very good

1,021 reviews

Reviews

1 / 20

10.0

Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.

Japan Airlines

8.3

Very good

1,653 reviews

ANA

8.4

Very good

1,021 reviews

Reviews

1 / 20

10.0

Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.

United Airlines

7.4

Good

9,095 reviews

ANA

8.4

Very good

1,021 reviews

Reviews

1 / 20

10.0

Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.

Related info for your journey

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 0 different airlines.
How long is the flight from St. Louis to Osaka?
For as low as $735, Air Canada can have you in Osaka from St. Louis in 32h 40m. Airlines will cover a distance of 6595 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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.

See more FAQs

Nara

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$354+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from St. Louis to Osaka

Cheapest flights from St. Louis to OsakaExplore 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 diciembre 12, 2025.

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 diciembre 12, 2025.

Find flight deals from St. Louis to Osaka

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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Use the filters below to find and compare flights from St. Louis to Osaka that are best for you.

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 December.

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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Osaka

Reviews of airlines servicing Osaka

Read through reviews of airlines operating flights from St. Louis to Osaka, such as ANA, Japan Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

How long is the flight from St. Louis to Osaka?

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

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

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

Traveling to a place near Osaka?

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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 diciembre 12, 2025.