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.

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

Air Canada, Alaska Airlines, and ANA are the most popular carriers operating from Seattle/Tacoma Intl to Osaka

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 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.

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.

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.

$307 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 $741 to $872. The lowest price recently found on this route was $378.

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Find the cheapest flights from Seattle to Osaka

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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 - 10:17 pmKIX-SEA

18h 32m1 stop

$378Alaska Airlines

Find Deal

Mon, Jan 19 - Mon, Jan 26

7:00 am - 6:45 pmSEA-KIX

18h 45m1 stop

8:45 pm - 11:46 pmKIX-SEA

20h 01m1 stop

$382Alaska Airlines

Find Deal

Fri, Nov 28 - Fri, Dec 5

7:00 am - 6:45 pmSEA-KIX

18h 45m1 stop

8:45 pm - 5:19 amKIX-SEA

25h 34m1 stop

$395Alaska Airlines

Find Deal

Mon, Jan 19 - Mon, Jan 26

8:00 pm - 6:55 pmSEA-ITM

29h 55m2 stops

2:05 pm - 2:31 pmITM-SEA

17h 26m2 stops

$600Air Canada

Find Deal

Sun, Jan 11 - Sun, Jan 18

12:30 pm - 7:55 pmSEA-ITM

14h 25m1 stop

2:40 pm - 9:55 amITM-SEA

12h 15m1 stop

$625Japan Airlines

Find Deal

Tue, Jan 6 - Tue, Jan 27

8:25 am - 7:40 amSEA-ITM

30h 15m2 stops

8:10 pm - 9:55 amITM-SEA

30h 45m1 stop

$628Japan Airlines

Find Deal

Sun, Jan 18 - Mon, Jan 26

3:45 pm - 8:00 amSEA-UKB

23h 15m1 stop

9:15 pm - 1:20 pmUKB-SEA

33h 05m1 stop

$638ANA

Find Deal

Fri, Jan 23 - Sun, Feb 1

7:29 pm - 8:00 amSEA-UKB

19h 31m2 stops

9:15 pm - 1:20 pmUKB-SEA

33h 05m1 stop

$645ANA

Find Deal

Wed, Feb 18 - Wed, Feb 25

11:00 am - 5:40 pmSEA-UKB

37h 40m1 stop

6:40 pm - 9:00 amUKB-SEA

31h 20m1 stop

$660Korean Air

Find Deal

Thu, Jan 29 - Sat, Feb 14

11:00 am - 5:40 pmSEA-UKB

37h 40m1 stop

11:10 am - 9:00 amUKB-SEA

14h 50m1 stop

$665Korean Air

Find Deal

Tue, Feb 10 - Sat, Mar 7

Japan Airlines flights from Seattle to Osaka

Our best Japan Airlines deals on Seattle to Osaka flight tickets

Japan Airlines

Jan 6

SEA6:00 amSeattle/Tacoma Intl

19h 50m

1 stop

KIX6:50 pmOsaka Kansai Intl

Jan 27

KIX10:50 amOsaka Kansai Intl

16h 05m

1 stop

SEA9:55 amSeattle/Tacoma Intl

$614

Find similar

Japan Airlines

Jan 20

SEA8:25 amSeattle/Tacoma Intl

20h 55m

2 stops

KIX10:20 pmOsaka Kansai Intl

Feb 2

KIX8:25 pmOsaka Kansai Intl

35h 09m

2 stops

SEA2:34 pmSeattle/Tacoma Intl

$623

Find similar

Japan Airlines

Jan 13

SEA12:30 pmSeattle/Tacoma Intl

14h 25m

1 stop

ITM7:55 pmOsaka Itami

Jan 20

ITM2:40 pmOsaka Itami

12h 15m

1 stop

SEA9:55 amSeattle/Tacoma Intl

$625

Find similar

ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets

ANA

Jan 18

SEA6:18 amSeattle/Tacoma Intl

17h 22m

1 stop

KIX4:40 pmOsaka Kansai Intl

Jan 26

KIX3:45 pmOsaka Kansai Intl

14h 35m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$615

Find similar

ANA

Jan 13

SEA6:18 amSeattle/Tacoma Intl

17h 22m

1 stop

KIX4:40 pmOsaka Kansai Intl

Feb 10

KIX2:05 pmOsaka Kansai Intl

16h 15m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$621

Find similar

ANA

Feb 24

SEA7:15 amSeattle/Tacoma Intl

16h 25m

1 stop

KIX4:40 pmOsaka Kansai Intl

Mar 17

KIX3:45 pmOsaka Kansai Intl

14h 35m

1 stop

SEA2:20 pmSeattle/Tacoma Intl

$625

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 1/19

7:00 am-6:45 pm

1 stop18h 45m

Osaka Kansai Intl

Mon 1/26

8:45 pm-10:17 pm

1 stop18h 32m

$378

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 11/28

7:00 am-6:45 pm

1 stop18h 45m

Osaka Kansai Intl

Fri 12/5

8:45 pm-11:46 pm

1 stop20h 01m

$382

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 1/19

7:00 am-6:45 pm

1 stop18h 45m

Osaka Kansai Intl

Mon 1/26

8:45 pm-5:19 am

1 stop25h 34m

$395

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sun 1/11

8:00 pm-6:55 pm

2 stops29h 55m

Osaka Itami

Sun 1/18

2:05 pm-2:31 pm

2 stops17h 26m

$600

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 1/6

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Tue 1/27

2:40 pm-9:55 am

1 stop12h 15m

$625

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sun 1/18

8:25 am-7:40 am

2 stops30h 15m

Osaka Itami

Mon 1/26

8:10 pm-9:55 am

1 stop30h 45m

$628

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Fri 1/23

3:45 pm-8:00 am

1 stop23h 15m

Kobe

Sun 2/1

9:15 pm-1:20 pm

1 stop33h 05m

$638

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Wed 2/18

7:29 pm-8:00 am

2 stops19h 31m

Kobe

Wed 2/25

9:15 pm-1:20 pm

1 stop33h 05m

$645

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Thu 1/29

11:00 am-5:40 pm

1 stop37h 40m

Kobe

Sat 2/14

6:40 pm-9:00 am

1 stop31h 20m

$660

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Tue 2/10

11:00 am-5:40 pm

1 stop37h 40m

Kobe

Sat 3/7

11:10 am-9:00 am

1 stop14h 50m

$665

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 $735. If you are unable to visit Osaka during the month of September, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $736.

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 $948 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 $762 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 8.2 486 reviews	Search Asiana Airlines flights
Delta	PriceFrom $649	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
ANA	PriceFrom $660	Free Cancellation	Rating 8.4 1,004 reviews	Search ANA flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 10,449 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,613 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $716	Free Cancellation	Rating 8.4 1,163 reviews	Search Korean Air flights
United Airlines	PriceFrom $734	Free Cancellation	Rating 7.4 9,017 reviews	Search United Airlines flights
STARLUX Airlines	PriceFrom $975	Free Cancellation	Rating 8.9 227 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 $307

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.

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Big names and deals

Filter for what you want

Filter for what you want

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Price Alerts

Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

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Cheap last minute flights

Japan Airlines flights from Seattle to Osaka

Our best Japan Airlines deals on Seattle to Osaka flight tickets

ANA flights from Seattle to Osaka

Our best ANA 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?

Air Canada, Alaska 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: 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