What is the cheapest airline that flies from Seattle/Tacoma Intl to Osaka?

Asiana Airlines, Philippine Airlines, and ANA are the most popular carriers operating from Seattle/Tacoma Intl to Osaka

Which airport is the most popular layover for flights between Seattle and Osaka?

Tokyo (HND) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Seattle to Osaka?

Tokyo (HND) has the shortest average layover time for this route: 2h 02m.

Which layover airport offers the lowest fares from Seattle to Osaka?

Flights via Honolulu (HNL) offer the lowest average round-trip price of $757.

What airlines fly to Osaka?

ANA, Asiana Airlines and Air Canada are the top three most popular airlines that fly to Osaka from Seattle according to our data. ANA is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Osaka. Keep in mind that there are 11 different airlines that fly to Osaka on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Seattle to Osaka?

Flights connecting via Tokyo (HND) have the shortest average one-way travel time: 13h 32m.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Osaka?

Prices for flights from Seattle/Tacoma Intl Airport to Osaka are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Osaka?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Osaka is 11 as of September 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Osaka?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl 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.

$304 Cheap Flights from Seattle to Osaka in 2025/26

Q: What is the typical price of a round-trip flight between Seattle and Osaka?

Prices are currently low for flights on this route. Typical prices usually range from $700 to $850. The lowest price recently found on this route was $572.

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Find the cheapest flights from Seattle to Osaka

Round-trip

One-way

Last minute

Cheap round-trip flights

12:10 am - 9:40 amSEA-KIX

16h 30m1 stop

10:50 am - 1:55 pmKIX-SEA

20h 05m1 stop

$572Asiana Airlines

Find Deal

Sun, Nov 30 - Sun, Dec 7

12:10 am - 9:40 amSEA-KIX

16h 30m1 stop

10:50 am - 1:55 pmKIX-SEA

20h 05m1 stop

$598Asiana Airlines

Find Deal

Sat, Nov 8 - Sun, Nov 16

12:10 am - 8:55 pmSEA-KIX

27h 45m1 stop

10:50 am - 1:55 pmKIX-SEA

20h 05m1 stop

$599Asiana Airlines

Find Deal

Sat, Nov 8 - Tue, Nov 18

12:00 pm - 12:50 pmSEA-KIX

32h 50m1 stop

11:55 am - 8:14 pmKIX-SEA

24h 19m2 stops

$628Korean Air

Find Deal

Tue, Oct 28 - Fri, Oct 31

7:00 am - 9:00 pmSEA-KIX

22h 00m2 stops

6:10 pm - 10:00 amKIX-SEA

31h 50m1 stop

$634Korean Air

Find Deal

Tue, Oct 21 - Mon, Oct 27

3:40 pm - 8:35 amSEA-KIX

23h 55m1 stop

6:35 pm - 8:51 pmKIX-SEA

19h 16m1 stop

$639ANA

Find Deal

Sun, Nov 9 - Wed, Nov 12

3:40 pm - 10:20 pmSEA-KIX

13h 40m1 stop

9:10 pm - 1:20 pmKIX-SEA

33h 10m1 stop

$659ANA

Find Deal

Sun, Nov 30 - Mon, Dec 15

7:00 am - 7:55 pmSEA-ITM

19h 55m2 stops

2:40 pm - 2:53 pmITM-SEA

17h 13m2 stops

$717Japan Airlines

Find Deal

Fri, Jan 16 - Fri, Jan 23

1:10 pm - 8:00 pmSEA-ITM

14h 50m1 stop

10:30 am - 9:50 amITM-SEA

16h 20m2 stops

$770Japan Airlines

Find Deal

Mon, Oct 27 - Tue, Nov 11

10:05 am - 6:55 pmSEA-ITM

15h 50m2 stops

2:00 pm - 2:31 pmITM-SEA

17h 31m2 stops

$883Air Canada

Find Deal

Sun, Nov 30 - Mon, Dec 15

Korean Air flights from Seattle to Osaka

Our best Korean Air deals on Seattle to Osaka flight tickets

Korean Air

Oct 28

SEA12:00 pmSeattle/Tacoma Intl

32h 50m

1 stop

KIX12:50 pmOsaka Kansai Intl

Oct 31

KIX11:55 amOsaka Kansai Intl

24h 19m

2 stops

SEA8:14 pmSeattle/Tacoma Intl

$628

Find similar

Korean Air

Oct 21

SEA7:00 amSeattle/Tacoma Intl

22h 00m

2 stops

KIX9:00 pmOsaka Kansai Intl

Oct 27

KIX6:10 pmOsaka Kansai Intl

31h 50m

1 stop

SEA10:00 amSeattle/Tacoma Intl

$634

Find similar

Korean Air

Oct 21

SEA12:50 pmSeattle/Tacoma Intl

29h 20m

1 stop

UKB10:10 amKobe

Oct 27

UKB6:40 pmKobe

31h 20m

1 stop

SEA10:00 amSeattle/Tacoma Intl

$637

Find similar

Asiana Airlines flights from Seattle to Osaka

Our best Asiana Airlines deals on Seattle to Osaka flight tickets

Asiana Airlines

Nov 30

SEA12:10 amSeattle/Tacoma Intl

16h 30m

1 stop

KIX9:40 amOsaka Kansai Intl

Dec 7

KIX10:50 amOsaka Kansai Intl

20h 05m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$572

Find similar

Asiana Airlines

Nov 8

SEA12:10 amSeattle/Tacoma Intl

16h 30m

1 stop

KIX9:40 amOsaka Kansai Intl

Nov 16

KIX10:50 amOsaka Kansai Intl

20h 05m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$598

Find similar

Asiana Airlines

Nov 8

SEA12:10 amSeattle/Tacoma Intl

27h 45m

1 stop

KIX8:55 pmOsaka Kansai Intl

Nov 18

KIX10:50 amOsaka Kansai Intl

20h 05m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$599

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 11/30

12:10 am-9:40 am

1 stop16h 30m

Osaka Kansai Intl

Sun 12/7

10:50 am-1:55 pm

1 stop20h 05m

$572

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 11/8

12:10 am-9:40 am

1 stop16h 30m

Osaka Kansai Intl

Sun 11/16

10:50 am-1:55 pm

1 stop20h 05m

$598

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 11/8

12:10 am-8:55 pm

1 stop27h 45m

Osaka Kansai Intl

Tue 11/18

10:50 am-1:55 pm

1 stop20h 05m

$599

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 10/28

12:00 pm-12:50 pm

1 stop32h 50m

Osaka Kansai Intl

Fri 10/31

11:55 am-8:14 pm

2 stops24h 19m

$628

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 10/21

7:00 am-9:00 pm

2 stops22h 00m

Osaka Kansai Intl

Mon 10/27

6:10 pm-10:00 am

1 stop31h 50m

$634

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 11/9

3:40 pm-8:35 am

1 stop23h 55m

Osaka Kansai Intl

Wed 11/12

6:35 pm-8:51 pm

1 stop19h 16m

$639

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 11/30

3:40 pm-10:20 pm

1 stop13h 40m

Osaka Kansai Intl

Mon 12/15

9:10 pm-1:20 pm

1 stop33h 10m

$659

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Fri 1/16

7:00 am-7:55 pm

2 stops19h 55m

Osaka Itami

Fri 1/23

2:40 pm-2:53 pm

2 stops17h 13m

$717

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 10/27

1:10 pm-8:00 pm

1 stop14h 50m

Osaka Itami

Tue 11/11

10:30 am-9:50 am

2 stops16h 20m

$770

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sun 11/30

10:05 am-6:55 pm

2 stops15h 50m

Osaka Itami

Mon 12/15

2:00 pm-2:31 pm

2 stops17h 31m

$883

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle 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

Layovers

What is the typical price of a round-trip flight between Seattle and Osaka?

What is the cheapest month to fly to Osaka?

In general, September is the cheapest month to fly from Seattle to Osaka. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $750. If you are unable to visit Osaka during the month of September, then departing from Seattle during the month August is also very affordable. Most momondo users find prices during this month for around $796.

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

According to our data, Tuesday is the cheapest day to fly to Osaka from Seattle. The lowest ticket price found for a Tuesday departure recently was $1,071. 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 Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Osaka for around $1,160.

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

Our data shows that the cheapest Seattle to Osaka flights are usually those with departure times in the evening. Our users have found flights to Osaka in the evening for as low as $994. Flights to Osaka are more costly in the afternoon, with an average ticket price of $1,459. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Osaka?

You are more likely to see cheaper flights to Osaka from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka for around $979 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Osaka from Seattle for as low as $800 on momondo.

When to book flights from Seattle to Osaka

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

Estimated round-trip price

Cheap Seattle to Osaka (SEA to OSA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Osaka

Direct flights	None

There are no direct flights from Seattle to Osaka. There are no popular flight routes from Seattle to Osaka.

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How far is Seattle/Tacoma Intl to Osaka by plane?
The distance between Seattle/Tacoma Intl and Osaka is about 4994.7 mi. Flights usually cover this in 13h 15m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Osaka?
Prices for flights from Seattle/Tacoma Intl Airport to Osaka are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Osaka?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Osaka is 11 as of September 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Osaka?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl 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 Seattle to Osaka?
momondo data reveals that the most frequently booked airline on the route from Seattle to Osaka is ANA, representing 60% of all bookings. The subsequent popular airlines are Asiana Airlines at 15%, Japan Airlines at 8%, and Korean Air at 5%.

Best airlines flying from Seattle to Osaka

Compare and see reviews for airlines that fly from Seattle to Osaka with momondo

Airline	Rating	Free Cancellation	Price
Asiana Airlines	PriceFrom $648	Free Cancellation	Rating 8.2 480 reviews	Search Asiana Airlines flights
Delta	PriceFrom $649	Free Cancellation	Rating 7.9 7,957 reviews	Search Delta flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
ANA	PriceFrom $670	Free Cancellation	Rating 8.4 963 reviews	Search ANA flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,559 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $716	Free Cancellation	Rating 8.4 1,140 reviews	Search Korean Air flights
China Eastern	PriceFrom $719	Free Cancellation	Rating 7.2 166 reviews	Search China Eastern flights
United Airlines	PriceFrom $797	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
STARLUX Airlines	PriceFrom $918	Free Cancellation	Rating 9.0 214 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $963	Free Cancellation	Rating 8.4 1,236 reviews	Search EVA Air flights

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Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Osaka?

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

Can I find flights from Seattle to Osaka with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Osaka flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Osaka?

momondo helps you find the best flight between Seattle 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 Seattle to Osaka right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Osaka now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Osaka and let you know when they change.

An easier way to manage your Osaka trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to Osaka from $304

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Osaka departing on 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Trusted and free

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Price Alerts

Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Korean Air flights from Seattle to Osaka

Our best Korean Air deals on Seattle to Osaka flight tickets

Asiana Airlines flights from Seattle to Osaka

Our best Asiana Airlines deals on Seattle to Osaka flight tickets

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How to get the cheapest flight ticket from Seattle 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

What is the typical price of a round-trip flight between Seattle and Osaka?

What is the cheapest month to fly to Osaka?

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

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

How far in advance should I book a flight to Osaka?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Osaka?

Asiana Airlines, Philippine Airlines, and ANA are the most popular carriers operating from Seattle/Tacoma Intl to Osaka

What airlines fly to Osaka?

Which airport is the most popular layover for flights between Seattle and Osaka?

Tokyo (HND) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Osaka?

Flights via Honolulu (HNL) offer the lowest average round-trip price of $757.

Which layover airport has the shortest travel time from Seattle to Osaka?

Flights connecting via Tokyo (HND) have the shortest average one-way travel time: 13h 32m.

Which layover airport has the shortest connection time from Seattle to Osaka?

Tokyo (HND) has the shortest average layover time for this route: 2h 02m.

When to book flights from Seattle to Osaka

Cheap Seattle to Osaka (SEA to OSA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Osaka

Direct flights

How far is Seattle/Tacoma Intl to Osaka by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Osaka?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Osaka?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Osaka?

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

What is the most popular airline from Seattle to Osaka?

Best airlines flying from Seattle to Osaka

Compare and see reviews for airlines that fly from Seattle to Osaka with momondo

Traveling to a place near Osaka?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Osaka?

Can I find flights from Seattle to Osaka with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Osaka?

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

An easier way to manage your Osaka trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Japan

Fly into one of these airports located in Osaka

Airports listed have a maximum distance of 22.5 mi from Osaka