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

Flights via Tokyo (HND) offer the lowest average round-trip price of $719.

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

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

What airlines fly to Osaka?

ANA, Japan 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 5 different airlines that fly to Osaka on a routine basis, so you have a few additional options to choose from.

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

Tokyo (HND) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 38m.

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 18m.

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 5 as of September 2026.

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.

$424 Cheap Flights from Seattle to Osaka in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Osaka

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:25 am - 12:45 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 20m1 stop Hong Kong Intl

6:05 pm - 8:45 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

31h 40m1 stop Hong Kong Intl

$780Cathay Pacific

Mon, Jan 18 - Tue, Jan 26

10:25 am - 9:05 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

41h 40m1 stop Hong Kong Intl

6:05 pm - 8:45 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

31h 40m1 stop Hong Kong Intl

$851Cathay Pacific

Wed, Feb 17 - Sun, Feb 28

3:40 pm - 4:10 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

31h 30m1 stop Tokyo Haneda

5:50 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

12h 30m1 stop Tokyo Haneda

$886ANA

Wed, Nov 25 - Wed, Dec 2

6:57 am - 6:10 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

18h 13m2 stops San Francisco Tokyo Haneda

1:00 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

17h 20m1 stop Tokyo Haneda

$909ANA

Mon, Jan 18 - Tue, Jan 26

8:40 am - 5:40 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 00m1 stop Vancouver Intl

7:25 pm - 2:37 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

12h 12m1 stop Vancouver Intl

$924Air Canada

Tue, Feb 16 - Thu, Feb 25

7:05 pm - 5:40 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

29h 35m1 stop Vancouver Intl

7:25 pm - 6:22 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

15h 57m1 stop Vancouver Intl

$924Air Canada

Tue, Feb 2 - Thu, Feb 11

10:03 am - 7:55 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

16h 52m2 stops Vancouver Intl Tokyo Narita

2:40 pm - 9:55 amITM Osaka Itami-SEA Seattle/Tacoma Intl

12h 15m1 stop Tokyo Narita

$970Japan Airlines

Tue, Nov 17 - Wed, Nov 25

12:15 pm - 7:55 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

14h 40m1 stop Tokyo Narita

2:40 pm - 2:41 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

17h 01m2 stops Tokyo Narita Vancouver Intl

$970Japan Airlines

Mon, Jan 11 - Thu, Feb 11

12:10 am - 10:30 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

30h 20m1 stop Incheon Intl

8:50 am - 8:47 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

27h 57m2 stops Incheon Intl San Francisco

$1,658Asiana Airlines

Tue, Oct 6 - Thu, Oct 29

12:10 am - 10:30 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

30h 20m1 stop Incheon Intl

8:50 am - 8:47 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

27h 57m2 stops Incheon Intl San Francisco

$1,658Asiana Airlines

Tue, Oct 6 - Fri, Oct 30

Cheap last minute flights

Enter your travel dates to find the best prices.

11:45 am - 2:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

35h 05m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl

9:15 pm - 8:45 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

28h 30m1 stop Hong Kong Intl

$948Cathay Pacific

Thu, Sep 24 - Mon, Nov 16

11:45 am - 2:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

35h 05m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl

9:15 pm - 8:45 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

28h 30m1 stop Hong Kong Intl

$948Cathay Pacific

Thu, Sep 24 - Wed, Nov 18

11:45 am - 2:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

35h 05m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl

7:05 pm - 8:45 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

30h 40m1 stop Hong Kong Intl

$948Cathay Pacific

Thu, Sep 24 - Tue, Nov 17

4:30 pm - 7:25 amSEA Seattle/Tacoma Intl-ITM Osaka Itami

22h 55m1 stop Tokyo Haneda

2:00 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

16h 20m1 stop Tokyo Narita

$1,144ANA

Mon, Sep 28 - Wed, Nov 4

4:30 pm - 7:25 amSEA Seattle/Tacoma Intl-ITM Osaka Itami

22h 55m1 stop Tokyo Haneda

2:00 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

16h 20m1 stop Tokyo Narita

$1,144ANA

Mon, Sep 28 - Tue, Nov 3

1:15 pm - 7:50 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

14h 35m1 stop Tokyo Narita

2:40 pm - 7:07 amITM Osaka Itami-SEA Seattle/Tacoma Intl

33h 27m2 stops Tokyo Narita Vancouver Intl

$1,242Japan Airlines

Mon, Sep 28 - Wed, Nov 18

1:15 pm - 7:50 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

14h 35m1 stop Tokyo Narita

2:40 pm - 9:55 amITM Osaka Itami-SEA Seattle/Tacoma Intl

12h 15m1 stop Tokyo Narita

$1,274Japan Airlines

Tue, Sep 29 - Thu, Nov 5

12:10 am - 10:30 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

30h 20m1 stop Incheon Intl

12:15 am - 8:47 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

36h 32m2 stops Incheon Intl San Francisco

$1,948Asiana Airlines

Fri, Sep 25 - Fri, Oct 30

7:25 pm - 6:30 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

31h 05m2 stops San Francisco Incheon Intl

10:30 am - 8:47 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

26h 17m2 stops Incheon Intl San Francisco

$2,333Asiana Airlines

Tue, Sep 29 - Sat, Oct 31

7:15 pm - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

29h 10m1 stop Vancouver Intl

7:25 pm - 9:57 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

19h 32m1 stop Vancouver Intl

$2,672Air Canada

Sat, Sep 26 - Sat, Nov 14

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China Airlines flights from Seattle to Osaka

Our best China Airlines deals on Seattle to Osaka flight tickets

China Airlines

Nov 16

SEA12:10 amSeattle/Tacoma Intl

20h 10m

1 stop

KIX1:20 pmOsaka Kansai Intl

Dec 3

KIX2:30 pmOsaka Kansai Intl

20h 40m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$924

China Airlines

Feb 2

SEA12:10 amSeattle/Tacoma Intl

24h 40m

1 stop

KIX5:50 pmOsaka Kansai Intl

Feb 7

KIX12:45 pmOsaka Kansai Intl

22h 25m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$926

China Airlines

Feb 13

SEA12:10 amSeattle/Tacoma Intl

18h 25m

1 stop

KIX11:35 amOsaka Kansai Intl

Feb 20

KIX2:30 pmOsaka Kansai Intl

20h 40m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$933

Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific deals on Seattle to Osaka flight tickets

Cathay Pacific

Jan 18

SEA10:25 amSeattle/Tacoma Intl

33h 20m

1 stop

KIX12:45 pmOsaka Kansai Intl

Jan 26

KIX6:05 pmOsaka Kansai Intl

31h 40m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$780

Cathay Pacific

Jan 11

SEA10:25 amSeattle/Tacoma Intl

26h 55m

1 stop

KIX6:20 amOsaka Kansai Intl

Feb 22

KIX9:50 amOsaka Kansai Intl

39h 55m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$851

Cathay Pacific

Jan 11

SEA10:25 amSeattle/Tacoma Intl

38h 15m

1 stop

KIX5:40 pmOsaka Kansai Intl

Jan 18

KIX5:00 pmOsaka Kansai Intl

32h 45m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$853

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 1/18

10:25 am-12:45 pm

1 stop33h 20m

Osaka Kansai Intl

Tue 1/26

6:05 pm-8:45 am

1 stop31h 40m

$780

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Wed 2/17

10:25 am-9:05 pm

1 stop41h 40m

Osaka Kansai Intl

Sun 2/28

6:05 pm-8:45 am

1 stop31h 40m

$851

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 11/25

3:40 pm-4:10 pm

1 stop31h 30m

Osaka Itami

Wed 12/2

5:50 pm-1:20 pm

1 stop12h 30m

$886

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Mon 1/18

6:57 am-6:10 pm

2 stops18h 13m

Osaka Itami

Tue 1/26

1:00 pm-1:20 pm

1 stop17h 20m

$909

Quickest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 2/16

8:40 am-5:40 pm

1 stop16h 00m

Osaka Kansai Intl

Thu 2/25

7:25 pm-2:37 pm

1 stop12h 12m

$924

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 2/2

7:05 pm-5:40 pm

1 stop29h 35m

Osaka Kansai Intl

Thu 2/11

7:25 pm-6:22 pm

1 stop15h 57m

$924

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Tue 11/17

10:03 am-7:55 pm

2 stops16h 52m

Osaka Itami

Wed 11/25

2:40 pm-9:55 am

1 stop12h 15m

$970

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Mon 1/11

12:15 pm-7:55 pm

1 stop14h 40m

Osaka Itami

Thu 2/11

2:40 pm-2:41 pm

2 stops17h 01m

$970

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 10/6

12:10 am-10:30 pm

1 stop30h 20m

Osaka Kansai Intl

Thu 10/29

8:50 am-8:47 pm

2 stops27h 57m

$1,658

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 10/6

12:10 am-10:30 pm

1 stop30h 20m

Osaka Kansai Intl

Fri 10/30

8:50 am-8:47 pm

2 stops27h 57m

$1,658

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?

Prices are currently low for flights on this route.

Typical prices usually range from $844 to $1,119.
The lowest price recently found on this route was $780.

What is the cheapest month to fly to Osaka?

In general, January 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 $727. If you are unable to visit Osaka during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $747.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 47% on your flight if you consider stops on a Seattle to Osaka flight.

How have Seattle to Osaka flight prices changed over time?

As of September 2026, prices for Seattle to Osaka flights are approximately 36% cheaper when compared to flights at the same time last year.

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

Best Price Found	$424
Fastest flight time	13h 15m
Direct flights	None

The best one-way flight to Osaka from Seattle in the past 72 hours is $424. The best round-trip flight deal from Seattle to Osaka found on momondo in the last 72 hours is $780.

The fastest flight from Seattle to Osaka takes 13h 15m

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

Search flight deals

Frequently asked questions about flying from Seattle to Osaka

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 5 as of September 2026.
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 39% of all bookings. The subsequent popular airlines are Japan Airlines at 15%, Asiana Airlines at 11%, and Air Canada at 9%.

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
Alaska Airlines	PriceFrom $370	Free Cancellation	Rating 7.9 12,960 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $565	Free Cancellation	Rating 8.1 562 reviews	Search Asiana Airlines flights
ANA	PriceFrom $649	Free Cancellation	Rating 8.3 1,321 reviews	Search ANA flights
Air Canada	PriceFrom $675	Free Cancellation	Rating 7.1 11,669 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $788	Free Cancellation	Rating 8.3 1,920 reviews	Search Japan Airlines flights

Nara

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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

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Complete your trip

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Fly into one of these airports located in Osaka

Osaka Itami Airport

Osaka Kansai Intl Airport

Cheap flights from Seattle to Osaka from $424

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 2/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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China Airlines flights from Seattle to Osaka

Our best China Airlines deals on Seattle to Osaka flight tickets

Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific deals on Seattle to Osaka flight tickets

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See travel insights to Osaka from

How to get the cheapest flight ticket from Seattle to Osaka

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

What is the cheapest month to fly to Osaka?

Can stopping save me money on Seattle to Osaka flights?

How have Seattle to Osaka flight prices changed over time?

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

What airlines fly to Osaka?

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

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

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

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

When to book flights from Seattle to Osaka

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Fly your favorite airline to Osaka

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Osaka

List of cabin classes available on flights landing in Osaka. Availability may vary depending on flight origin and airline.

Popular cities in Japan

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year