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 connection time from Seattle to Osaka?

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

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

Alaska Airlines, Air Canada, 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: 50% of momondo users choosing 1-stop flights on this route connected there.

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.

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 66% of people opting to fly with this airline when traveling to Osaka. Keep in mind that there are 9 different airlines that fly to Osaka on a routine basis, so you have a few additional options to choose from.

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 9 as of November 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.

$207 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 $744 to $894. The lowest price recently found on this route was $382.

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Cheap round-trip flights

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7:00 am - 6:45 pmSEA-KIX

18h 45m1 stop

8:45 pm - 8:07 pmKIX-SEA

16h 22m1 stop

$382Alaska Airlines

Find Deal

Tue, Jan 20 - Mon, Feb 2

7:00 am - 6:45 pmSEA-KIX

18h 45m1 stop

8:45 pm - 7:37 amKIX-SEA

27h 52m1 stop

$386Alaska Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 17

11:00 am - 10:10 amSEA-UKB

30h 10m1 stop

6:40 pm - 9:00 amUKB-SEA

31h 20m1 stop

$621Korean Air

Find Deal

Fri, Jan 16 - Sat, Jan 24

3:45 pm - 10:10 amSEA-ITM

25h 25m1 stop

4:00 pm - 1:20 pmITM-SEA

14h 20m1 stop

$629ANA

Find Deal

Fri, Jan 16 - Sat, Jan 24

11:00 am - 10:10 amSEA-UKB

30h 10m1 stop

11:10 am - 9:00 amUKB-SEA

14h 50m1 stop

$629Korean Air

Find Deal

Thu, Jan 22 - Thu, Jan 29

3:45 pm - 8:10 amSEA-ITM

23h 25m1 stop

12:00 pm - 1:20 pmITM-SEA

18h 20m1 stop

$637ANA

Find Deal

Fri, Jan 30 - Mon, Feb 16

12:30 pm - 7:40 amSEA-ITM

26h 10m1 stop

11:15 am - 9:55 amITM-SEA

15h 40m2 stops

$638Japan Airlines

Find Deal

Mon, Feb 2 - Tue, Feb 24

12:30 pm - 7:55 pmSEA-ITM

14h 25m1 stop

2:40 pm - 2:34 pmITM-SEA

16h 54m2 stops

$645Japan Airlines

Find Deal

Tue, Jan 13 - Wed, Feb 11

8:00 pm - 6:55 pmSEA-ITM

29h 55m2 stops

2:00 pm - 2:31 pmITM-SEA

17h 31m2 stops

$647Air Canada

Find Deal

Sun, Feb 1 - Wed, Feb 25

5:50 am - 6:55 pmSEA-ITM

20h 05m2 stops

2:00 pm - 7:16 pmITM-SEA

22h 16m2 stops

$659Air Canada

Find Deal

Thu, Jan 29 - Thu, Feb 19

Alaska Airlines flights from Seattle to Osaka

Our best Alaska Airlines deals on Seattle to Osaka flight tickets

Alaska Airlines

Jan 20

SEA7:00 amSeattle/Tacoma Intl

18h 45m

1 stop

KIX6:45 pmOsaka Kansai Intl

Feb 2

KIX8:45 pmOsaka Kansai Intl

16h 22m

1 stop

SEA8:07 pmSeattle/Tacoma Intl

$382

Find similar

Alaska Airlines

Dec 4

SEA7:00 amSeattle/Tacoma Intl

18h 45m

1 stop

KIX6:45 pmOsaka Kansai Intl

Dec 17

KIX8:45 pmOsaka Kansai Intl

27h 52m

1 stop

SEA7:37 amSeattle/Tacoma Intl

$386

Find similar

Alaska Airlines

Jan 16

SEA3:45 pmSeattle/Tacoma Intl

34h 00m

1 stop

KIX6:45 pmOsaka Kansai Intl

Jan 26

KIX8:45 pmOsaka Kansai Intl

17h 15m

1 stop

SEA9:00 pmSeattle/Tacoma Intl

$387

Find similar

Asiana Airlines flights from Seattle to Osaka

Our best Asiana Airlines deals on Seattle to Osaka flight tickets

Asiana Airlines

Nov 16

SEA12:10 amSeattle/Tacoma Intl

24h 55m

1 stop

KIX6:05 pmOsaka Kansai Intl

Dec 2

KIX9:00 amOsaka Kansai Intl

21h 55m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$660

Find similar

Asiana Airlines

Nov 16

SEA12:10 amSeattle/Tacoma Intl

17h 10m

1 stop

KIX10:20 amOsaka Kansai Intl

Dec 4

KIX10:30 amOsaka Kansai Intl

20h 25m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$669

Find similar

Asiana Airlines

Nov 16

SEA12:10 amSeattle/Tacoma Intl

24h 55m

1 stop

KIX6:05 pmOsaka Kansai Intl

Dec 2

KIX9:00 amOsaka Kansai Intl

21h 55m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$706

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 1/20

7:00 am-6:45 pm

1 stop18h 45m

Osaka Kansai Intl

Mon 2/2

8:45 pm-8:07 pm

1 stop16h 22m

$382

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 12/4

7:00 am-6:45 pm

1 stop18h 45m

Osaka Kansai Intl

Wed 12/17

8:45 pm-7:37 am

1 stop27h 52m

$386

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Fri 1/16

11:00 am-10:10 am

1 stop30h 10m

Kobe

Sat 1/24

6:40 pm-9:00 am

1 stop31h 20m

$621

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Fri 1/16

3:45 pm-10:10 am

1 stop25h 25m

Osaka Itami

Sat 1/24

4:00 pm-1:20 pm

1 stop14h 20m

$629

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Thu 1/22

11:00 am-10:10 am

1 stop30h 10m

Kobe

Thu 1/29

11:10 am-9:00 am

1 stop14h 50m

$629

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Fri 1/30

3:45 pm-8:10 am

1 stop23h 25m

Osaka Itami

Mon 2/16

12:00 pm-1:20 pm

1 stop18h 20m

$637

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 2/2

12:30 pm-7:40 am

1 stop26h 10m

Osaka Itami

Tue 2/24

11:15 am-9:55 am

2 stops15h 40m

$638

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 1/13

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Wed 2/11

2:40 pm-2:34 pm

2 stops16h 54m

$645

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sun 2/1

8:00 pm-6:55 pm

2 stops29h 55m

Osaka Itami

Wed 2/25

2:00 pm-2:31 pm

2 stops17h 31m

$647

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Thu 1/29

5:50 am-6:55 pm

2 stops20h 05m

Osaka Itami

Thu 2/19

2:00 pm-7:16 pm

2 stops22h 16m

$659

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 $737. 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 $961 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 $799 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.

Search flight deals

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 9 as of November 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 59% of all bookings. The subsequent popular airlines are Asiana Airlines at 16%, Japan Airlines at 7%, and Air Canada 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 $610	Free Cancellation	Rating 8.2 485 reviews	Search Asiana Airlines flights
Delta	PriceFrom $649	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
ANA	PriceFrom $660	Free Cancellation	Rating 8.4 1,003 reviews	Search ANA flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,604 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $716	Free Cancellation	Rating 8.4 1,160 reviews	Search Korean Air flights
United Airlines	PriceFrom $734	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
STARLUX Airlines	PriceFrom $975	Free Cancellation	Rating 8.9 220 reviews	Search STARLUX Airlines flights
China Airlines	PriceFrom $1,056	Free Cancellation	Rating 8.3 778 reviews	Search China 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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Cheap flights from Seattle to Osaka from $207

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 1/21. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

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Cheap last minute flights

Alaska Airlines flights from Seattle to Osaka

Our best Alaska Airlines 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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Use the filters below to find and compare flights from Seattle to Osaka that are best for you.

See travel insights to Osaka from

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?

Alaska Airlines, Air Canada, 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: 50% 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