What is the cheapest airline that flies from Lambert-St Louis to Osaka?

United Airlines, ANA, and Japan Airlines are the most popular carriers operating from Lambert-St Louis to Osaka

When did momondo last update prices for flights from Lambert-St Louis Airport to Osaka?

Prices for flights from Lambert-St Louis Airport to Osaka are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Osaka?

The number of operators available for flights from Lambert-St Louis Airport to Osaka is 1 as of April 2025.

How old do you have to be to fly from Lambert-St Louis Airport to Osaka?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Osaka.

What documentation or ID do you need to fly to Osaka?

The travel and health documents you'll need for your trip to Osaka may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Osaka. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$438 Cheap Flights from St. Louis to Osaka - Save in Minutes

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Osaka

Round-trip

One-way

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Osaka that have been recently found on momondo from popular airlines, departing in the coming months.

1:30 pm - 4:25 pmSTL-KIX

36h 55m2 stops

6:05 pm - 2:19 pmKIX-STL

34h 14m2 stops

$785Air Canada

Find Deal

Sat, Sep 20 - Sun, Sep 28

9:15 am - 4:25 pmSTL-KIX

17h 10m1 stop

6:05 pm - 7:57 pmKIX-STL

39h 52m2 stops

$794Air Canada

Find Deal

Sat, Sep 20 - Sun, Sep 28

8:20 am - 6:10 pmSTL-ITM

19h 50m2 stops

10:00 am - 6:13 pmITM-STL

22h 13m2 stops

$933ANA

Find Deal

Sat, Sep 20 - Sun, Sep 28

7:23 am - 2:15 pmSTL-KIX

40h 52m2 stops

5:55 pm - 10:59 pmKIX-STL

19h 04m1 stop

$1,015Japan Airlines

Find Deal

Mon, Jul 7 - Mon, Sep 8

7:23 am - 7:35 amSTL-ITM

34h 12m2 stops

2:35 pm - 11:59 pmITM-STL

23h 24m2 stops

$1,016Japan Airlines

Find Deal

Mon, Jul 7 - Mon, Sep 8

8:05 pm - 8:35 amSTL-ITM

22h 30m2 stops

7:25 am - 12:51 pmITM-STL

19h 26m2 stops

$1,080American Airlines

Find Deal

Fri, Jun 13 - Mon, Jun 23

8:50 am - 6:45 pmSTL-KIX

19h 55m1 stop

5:55 pm - 10:59 pmKIX-STL

19h 04m1 stop

$1,155American Airlines

Find Deal

Mon, Jul 7 - Mon, Sep 8

7:00 am - 2:50 pmSTL-KIX

17h 50m1 stop

4:55 pm - 10:39 amKIX-STL

31h 44m2 stops

$1,196United Airlines

Find Deal

Mon, May 19 - Tue, Jun 3

6:33 am - 7:10 pmSTL-ITM

22h 37m2 stops

7:30 am - 12:27 pmITM-STL

18h 57m2 stops

$1,414ANA

Find Deal

Tue, Jul 29 - Fri, Aug 8

5:15 am - 2:50 pmSTL-KIX

19h 35m2 stops

4:55 pm - 12:46 pmKIX-STL

33h 51m2 stops

$1,427United Airlines

Find Deal

Tue, Jul 29 - Fri, Aug 8

Japan Airlines flights from St. Louis to Osaka

Our best Japan Airlines deals on St. Louis to Osaka flight tickets

Japan Airlines

Jul 7

STL7:23 amLambert-St Louis

40h 52m

2 stops

KIX2:15 pmOsaka Kansai Intl

Sep 8

KIX5:55 pmOsaka Kansai Intl

19h 04m

1 stop

STL10:59 pmLambert-St Louis

$1,015

Find similar

Japan Airlines

Jul 7

STL7:23 amLambert-St Louis

34h 12m

2 stops

ITM7:35 amOsaka Itami

Sep 8

ITM2:35 pmOsaka Itami

23h 24m

2 stops

STL11:59 pmLambert-St Louis

$1,016

Find similar

Japan Airlines

Jun 13

STL7:20 amLambert-St Louis

35h 00m

2 stops

KIX8:20 amOsaka Kansai Intl

Jun 23

KIX2:50 pmOsaka Kansai Intl

42h 27m

2 stops

STL7:17 pmLambert-St Louis

$1,125

Find similar

Cathay Pacific flights from St. Louis to Osaka

Our best Cathay Pacific deals on St. Louis to Osaka flight tickets

Cathay Pacific

Jul 7

STL7:23 amLambert-St Louis

33h 17m

2 stops

KIX6:40 amOsaka Kansai Intl

Sep 8

KIX4:20 pmOsaka Kansai Intl

40h 48m

3 stops

STL7:08 pmLambert-St Louis

$1,453

Find similar

Cathay Pacific

Sep 20

STL7:59 pmLambert-St Louis

29h 16m

2 stops

KIX3:15 pmOsaka Kansai Intl

Sep 28

KIX4:20 pmOsaka Kansai Intl

40h 48m

3 stops

STL7:08 pmLambert-St Louis

$1,489

Find similar

Cathay Pacific

Sep 20

STL7:59 pmLambert-St Louis

28h 56m

3 stops

KIX2:55 pmOsaka Kansai Intl

Sep 28

KIX4:20 pmOsaka Kansai Intl

40h 48m

3 stops

STL7:08 pmLambert-St Louis

$1,566

Find similar

How to get the cheapest flight ticket from St. Louis to Osaka

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Osaka?

According to our data, Monday is the cheapest day to fly to Osaka from St. Louis. The lowest ticket price found for a Monday departure recently was $1,098. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Osaka for around $1,835.

When to book flights from St. Louis to Osaka

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Osaka according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Osaka (STL to OSA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Osaka

Best Price Found	$438
Fastest flight time	17h 10m
Direct flights	None
Airports in Osaka	2 airports

The best one-way flight to Osaka from St. Louis in the past 72 hours is $438. The best round-trip flight deal from St. Louis to Osaka found on momondo in the last 72 hours is $785.

The fastest flight from St. Louis to Osaka takes 17h 10m

There are no direct flights from St. Louis to Osaka. Popular non-direct routes for this connection are Lambert-St Louis Airport - Osaka Kansai Intl Airport and Lambert-St Louis Airport - Osaka Itami Airport.

There are 2 airports near Osaka: Osaka Itami (ITM), Osaka Kansai Intl (KIX)

Search flight deals

How far is Lambert-St Louis to Osaka by plane?
The straight-line distance from Lambert-St Louis to Osaka is 6585.1 mi. 17h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Osaka?
Prices for flights from Lambert-St Louis Airport to Osaka are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Osaka?
The number of operators available for flights from Lambert-St Louis Airport to Osaka is 1 as of April 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Osaka?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Osaka.
What documentation or ID do you need to fly to Osaka?
The travel and health documents you'll need for your trip to Osaka may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Osaka. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Osaka?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Osaka is Japan Airlines, representing 44% of all bookings. The subsequent popular airlines are United Airlines at 21%, American Airlines at 18%, and ANA at 18%.

Best airlines flying from St. Louis to Osaka

Compare and see reviews for airlines that fly from St. Louis to Osaka with momondo

Airline	Rating	Free Cancellation	Price
Japan Airlines	PriceFrom $723	Free Cancellation	Rating 8.3 1,464 reviews		Search Japan Airlines flights

Nara

Nishinomiya

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Osaka?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Osaka. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Osaka with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Osaka from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Osaka?

momondo helps you find the best flight between St. Louis and Osaka by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Osaka right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Osaka, momondo offers a useful price alert feature which will track prices for flights to Osaka from St. Louis and alert you when they change.