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

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

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 43m.

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

Cathay Pacific, China 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: 56% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Osaka?

ANA, Japan Airlines and Asiana Airlines 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 68% 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 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 August 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.

$407 Cheap Flights from Seattle to Osaka in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Osaka

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:50 am - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

18h 35m1 stop Vancouver Intl

6:00 pm - 2:22 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

12h 22m1 stop Vancouver Intl

$814Air Canada

Mon, Aug 31 - Tue, Oct 20

5:50 am - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

18h 35m1 stop Vancouver Intl

6:00 pm - 2:17 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

12h 17m1 stop Vancouver Intl

$819Air Canada

Sun, Aug 30 - Mon, Sep 14

5:50 am - 8:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

23h 00m2 stops Vancouver Intl Tokyo Narita

6:00 pm - 10:42 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 42m1 stop Vancouver Intl

$831Multiple Airlines

Mon, Aug 31 - Tue, Oct 20

7:05 pm - 8:20 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

32h 15m2 stops Vancouver Intl Sapporo Chitose

7:35 am - 9:57 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

31h 22m2 stops Tokyo Narita Vancouver Intl

$836Multiple Airlines

Sun, Jan 24 - Thu, Feb 11

12:10 am - 9:00 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 50m1 stop Incheon Intl

7:45 pm - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

35h 30m1 stop Incheon Intl

$933Asiana Airlines

Mon, Oct 5 - Wed, Oct 14

12:10 am - 9:00 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 50m1 stop Incheon Intl

7:45 pm - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

35h 30m1 stop Incheon Intl

$933Asiana Airlines

Mon, Oct 5 - Wed, Oct 14

7:32 pm - 7:30 amSEA Seattle/Tacoma Intl-ITM Osaka Itami

18h 58m2 stops San Francisco Tokyo Haneda

3:00 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

15h 20m1 stop Tokyo Haneda

$1,095ANA

Tue, Jan 12 - Tue, Jan 26

6:57 am - 6:55 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

18h 58m2 stops San Francisco Tokyo Narita

3:00 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

15h 20m1 stop Tokyo Haneda

$1,101ANA

Sun, Jan 17 - Fri, Feb 19

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

14h 35m1 stop Tokyo Narita

2:35 pm - 10:35 amITM Osaka Itami-SEA Seattle/Tacoma Intl

12h 00m1 stop Tokyo Narita

$1,108Japan Airlines

Wed, Sep 16 - Tue, Sep 22

11:55 am - 7:55 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

15h 00m1 stop Tokyo Narita

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

12h 15m1 stop Tokyo Narita

$1,108Japan Airlines

Mon, Jan 11 - Wed, Feb 24

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Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific deals on Seattle to Osaka flight tickets

Cathay Pacific

Nov 2

SEA10:50 amSeattle/Tacoma Intl

37h 50m

1 stop

KIX5:40 pmOsaka Kansai Intl

Nov 15

KIX7:05 pmOsaka Kansai Intl

31h 05m

1 stop

SEA9:10 amSeattle/Tacoma Intl

$879

Cathay Pacific

Aug 24

SEA12:25 pmSeattle/Tacoma Intl

32h 30m

1 stop

KIX12:55 pmOsaka Kansai Intl

Sep 9

KIX7:25 pmOsaka Kansai Intl

30h 55m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$884

Cathay Pacific

Sep 1

SEA12:25 pmSeattle/Tacoma Intl

34h 45m

1 stop

KIX3:10 pmOsaka Kansai Intl

Sep 30

KIX7:25 pmOsaka Kansai Intl

30h 40m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$889

Asiana Airlines flights from Seattle to Osaka

Our best Asiana Airlines deals on Seattle to Osaka flight tickets

Asiana Airlines

Oct 5

SEA12:10 amSeattle/Tacoma Intl

16h 50m

1 stop

KIX9:00 amOsaka Kansai Intl

Oct 14

KIX7:45 pmOsaka Kansai Intl

35h 30m

1 stop

SEA3:15 pmSeattle/Tacoma Intl

$933

Asiana Airlines

Dec 6

SEA12:10 amSeattle/Tacoma Intl

20h 50m

1 stop

UKB2:00 pmKobe

Dec 11

UKB3:00 pmKobe

15h 55m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$1,075

Asiana Airlines

Nov 15

SEA12:10 amSeattle/Tacoma Intl

20h 50m

1 stop

UKB2:00 pmKobe

Dec 1

UKB3:00 pmKobe

15h 55m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$1,079

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 8/31

5:50 am-4:25 pm

1 stop18h 35m

Osaka Kansai Intl

Tue 10/20

6:00 pm-2:22 pm

1 stop12h 22m

$814

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sun 8/30

5:50 am-4:25 pm

1 stop18h 35m

Osaka Kansai Intl

Mon 9/14

6:00 pm-2:17 pm

1 stop12h 17m

$819

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 8/31

5:50 am-8:50 pm

2 stops23h 00m

Osaka Kansai Intl

Tue 10/20

6:00 pm-10:42 pm

1 stop20h 42m

$831

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sun 1/24

7:05 pm-8:20 pm

2 stops32h 15m

Osaka Kansai Intl

Thu 2/11

7:35 am-9:57 pm

2 stops31h 22m

$836

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 10/5

12:10 am-9:00 am

1 stop16h 50m

Osaka Kansai Intl

Wed 10/14

7:45 pm-3:15 pm

1 stop35h 30m

$933

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 10/5

12:10 am-9:00 am

1 stop16h 50m

Osaka Kansai Intl

Wed 10/14

7:45 pm-3:15 pm

1 stop35h 30m

$933

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Tue 1/12

7:32 pm-7:30 am

2 stops18h 58m

Osaka Itami

Tue 1/26

3:00 pm-1:20 pm

1 stop15h 20m

$1,095

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Sun 1/17

6:57 am-6:55 pm

2 stops18h 58m

Osaka Itami

Fri 2/19

3:00 pm-1:20 pm

1 stop15h 20m

$1,101

Quickest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 9/16

1:15 pm-7:50 pm

1 stop14h 35m

Osaka Itami

Tue 9/22

2:35 pm-10:35 am

1 stop12h 00m

$1,108

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Mon 1/11

11:55 am-7:55 pm

1 stop15h 00m

Osaka Itami

Wed 2/24

2:40 pm-9:55 am

1 stop12h 15m

$1,108

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 $871 to $1,094.
The lowest price recently found on this route was $814.

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 $688. 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 $701.

How far in advance should I book a flight from Seattle 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 $910 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 $641 on momondo.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 36% 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 August 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

Fastest flight time	14h 30m
Direct flights	None

The fastest flight from Seattle to Osaka takes 14h 30m

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 14h 30m, 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 August 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 42% of all bookings. The subsequent popular airlines are Asiana Airlines at 16%, Japan Airlines at 13%, 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 12,810 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $565	Free Cancellation	Rating 8.1 557 reviews	Search Asiana Airlines flights
ANA	PriceFrom $649	Free Cancellation	Rating 8.3 1,298 reviews	Search ANA flights
Air Canada	PriceFrom $675	Free Cancellation	Rating 7.1 11,483 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $788	Free Cancellation	Rating 8.3 1,904 reviews	Search Japan Airlines 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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Fly into one of these airports located in Osaka

Osaka Itami Airport

Osaka Kansai Intl Airport

Cheap flights from Seattle to Osaka from $407

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 8/24. 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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Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific 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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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?

How far in advance should I book a flight from Seattle 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

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

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