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

Air Canada, Japan 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: 55% of momondo users choosing 1-stop flights on this route connected there.

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 67% 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 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 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.

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 December 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.

$319 Cheap Flights from Seattle to Osaka in 2025/26

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Find the cheapest flights from Seattle to Osaka

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 8:35 pm

SEA

KIX

35h 55m2 stops

9:10 pm - 9:31 am

KIX

SEA

53h 21m2 stops

$597Multiple Airlines

Sat, Jan 24 - Sat, Jan 31

8:00 pm - 6:55 pm

SEA

ITM

29h 55m2 stops

2:05 pm - 10:06 pm

ITM

SEA

25h 01m2 stops

$599Air Canada

Tue, Feb 3 - Mon, Feb 9

5:50 am - 6:55 pm

SEA

ITM

20h 05m2 stops

2:05 pm - 10:06 pm

ITM

SEA

25h 01m2 stops

$600Air Canada

Sun, Feb 1 - Sun, Feb 8

11:00 am - 10:10 am

SEA

UKB

30h 10m1 stop

6:40 pm - 9:00 am

UKB

SEA

31h 20m1 stop

$622Korean Air

Thu, Jan 22 - Sat, Feb 7

12:30 pm - 7:55 pm

SEA

ITM

14h 25m1 stop

2:40 pm - 9:55 am

ITM

SEA

12h 15m1 stop

$624Japan Airlines

Tue, Jan 13 - Tue, Jan 20

11:00 am - 10:45 am

SEA

KIX

30h 45m1 stop

9:00 am - 9:00 am

KIX

SEA

17h 00m1 stop

$624Korean Air

Sat, Jan 24 - Sat, Jan 31

12:30 pm - 7:55 pm

SEA

ITM

14h 25m1 stop

2:40 pm - 9:55 am

ITM

SEA

12h 15m1 stop

$625Japan Airlines

Tue, Jan 13 - Tue, Jan 20

3:45 pm - 8:10 am

SEA

ITM

23h 25m1 stop

3:00 pm - 1:20 pm

ITM

SEA

15h 20m1 stop

$633ANA

Thu, Jan 22 - Sat, Feb 7

12:10 am - 9:40 am

SEA

KIX

17h 30m1 stop

10:50 am - 2:55 pm

KIX

SEA

20h 05m1 stop

$634Asiana Airlines

Sun, Apr 19 - Thu, Apr 30

3:45 pm - 8:00 am

SEA

UKB

23h 15m1 stop

7:05 am - 1:20 pm

UKB

SEA

23h 15m1 stop

$643ANA

Fri, Jan 16 - Mon, Jan 26

Asiana Airlines flights from Seattle to Osaka

Our best Asiana Airlines deals on Seattle to Osaka flight tickets

Asiana Airlines

Apr 19

SEA12:10 amSeattle/Tacoma Intl

17h 30m

1 stop

KIX9:40 amOsaka Kansai Intl

Apr 30

KIX10:50 amOsaka Kansai Intl

20h 05m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$634

Find similar

Asiana Airlines

Mar 2

SEA12:10 amSeattle/Tacoma Intl

15h 40m

1 stop

KIX8:50 amOsaka Kansai Intl

Mar 10

KIX7:25 pmOsaka Kansai Intl

35h 30m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$644

Find similar

Asiana Airlines

Mar 8

SEA12:10 amSeattle/Tacoma Intl

16h 40m

1 stop

KIX8:50 amOsaka Kansai Intl

Mar 26

KIX7:25 pmOsaka Kansai Intl

35h 30m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$647

Find similar

ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets

ANA

Jan 22

SEA3:45 pmSeattle/Tacoma Intl

23h 25m

1 stop

ITM8:10 amOsaka Itami

Feb 7

ITM3:00 pmOsaka Itami

15h 20m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$633

Find similar

ANA

Jan 8

SEA3:45 pmSeattle/Tacoma Intl

13h 35m

1 stop

KIX10:20 pmOsaka Kansai Intl

Jan 15

KIX5:35 pmOsaka Kansai Intl

12h 45m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$642

Find similar

ANA

Jan 16

SEA3:45 pmSeattle/Tacoma Intl

23h 15m

1 stop

UKB8:00 amKobe

Jan 26

UKB7:05 amKobe

23h 15m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$643

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 1/24

3:40 pm-8:35 pm

2 stops35h 55m

Osaka Kansai Intl

Sat 1/31

9:10 pm-9:31 am

2 stops53h 21m

$597

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 2/3

8:00 pm-6:55 pm

2 stops29h 55m

Osaka Itami

Mon 2/9

2:05 pm-10:06 pm

2 stops25h 01m

$599

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sun 2/1

5:50 am-6:55 pm

2 stops20h 05m

Osaka Itami

Sun 2/8

2:05 pm-10:06 pm

2 stops25h 01m

$600

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Thu 1/22

11:00 am-10:10 am

1 stop30h 10m

Kobe

Sat 2/7

6:40 pm-9:00 am

1 stop31h 20m

$622

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 1/13

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Tue 1/20

2:40 pm-9:55 am

1 stop12h 15m

$624

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 1/24

11:00 am-10:45 am

1 stop30h 45m

Osaka Kansai Intl

Sat 1/31

9:00 am-9:00 am

1 stop17h 00m

$624

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 1/13

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Tue 1/20

2:40 pm-9:55 am

1 stop12h 15m

$625

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Thu 1/22

3:45 pm-8:10 am

1 stop23h 25m

Osaka Itami

Sat 2/7

3:00 pm-1:20 pm

1 stop15h 20m

$633

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 4/19

12:10 am-9:40 am

1 stop17h 30m

Osaka Kansai Intl

Thu 4/30

10:50 am-2:55 pm

1 stop20h 05m

$634

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Fri 1/16

3:45 pm-8:00 am

1 stop23h 15m

Kobe

Mon 1/26

7:05 am-1:20 pm

1 stop23h 15m

$643

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 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 $679. 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 $700.

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 $908 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

Fastest flight time	13h 15m
Direct flights	None

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

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 December 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 15%, Japan Airlines at 6%, 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
Alaska Airlines	PriceFrom $370	Free Cancellation	Rating 8.0 11,431 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $595	Free Cancellation	Rating 8.2 492 reviews	Search Asiana Airlines flights
United Airlines	PriceFrom $647	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
ANA	PriceFrom $657	Free Cancellation	Rating 8.4 1,021 reviews	Search ANA flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 10,514 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,652 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $716	Free Cancellation	Rating 8.4 1,184 reviews	Search Korean Air flights
China Airlines	PriceFrom $1,056	Free Cancellation	Rating 8.2 788 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $1,095	Free Cancellation	Rating 8.9 243 reviews	Search STARLUX 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.