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 68% of people opting to fly with this airline when traveling to Osaka. Keep in mind that there are 10 different airlines that fly to Osaka on a routine basis, so you have a few additional options to choose from.

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

Asiana Airlines, Japan Airlines, and Korean Air 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.

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 35m.

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

Vancouver (YVR) has the shortest average layover time for this route: 2h 05m.

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 10 as of January 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.

$319 Cheap Flights from Seattle to Osaka in 2026

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Find the cheapest flights from Seattle to Osaka

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Cheap round-trip flights

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5:55 am - 8:35 pm

SEA

KIX

21h 40m2 stops

10:50 am - 7:16 pm

KIX

SEA

25h 26m2 stops

$608Multiple Airlines

Tue, Jan 20 - Tue, Jan 27

12:30 pm - 7:55 pm

SEA

ITM

14h 25m1 stop

2:40 pm - 9:55 am

ITM

SEA

12h 15m1 stop

$616Japan Airlines

Thu, Feb 5 - Thu, Feb 12

12:55 am - 8:55 pm

SEA

KIX

28h 00m1 stop

9:10 am - 2:55 pm

KIX

SEA

21h 45m1 stop

$616Asiana Airlines

Mon, Apr 6 - Tue, Apr 21

8:25 am - 8:05 pm

SEA

ITM

18h 40m2 stops

12:30 pm - 9:55 am

ITM

SEA

14h 25m1 stop

$618Japan Airlines

Mon, Feb 2 - Mon, Feb 9

12:30 pm - 7:55 pm

SEA

ITM

14h 25m1 stop

2:40 pm - 9:55 am

ITM

SEA

12h 15m1 stop

$622Japan Airlines

Tue, Feb 3 - Tue, Feb 10

12:10 am - 6:05 pm

SEA

KIX

24h 55m1 stop

10:30 am - 1:55 pm

KIX

SEA

20h 25m1 stop

$624Asiana Airlines

Sat, Jan 31 - Sat, Feb 7

3:45 pm - 7:30 am

SEA

ITM

22h 45m1 stop

8:20 pm - 1:20 pm

ITM

SEA

34h 00m1 stop

$637ANA

Sat, Feb 21 - Sat, Feb 28

3:45 pm - 8:00 am

SEA

UKB

23h 15m1 stop

9:15 pm - 1:20 pm

UKB

SEA

33h 05m1 stop

$637ANA

Sat, Feb 21 - Sat, Feb 28

11:00 am - 10:10 am

SEA

UKB

30h 10m1 stop

11:10 am - 9:00 am

UKB

SEA

14h 50m1 stop

$664Korean Air

Sun, Feb 1 - Mon, Feb 9

11:00 am - 10:10 am

SEA

UKB

30h 10m1 stop

6:40 pm - 10:00 am

UKB

SEA

31h 20m1 stop

$665Korean Air

Sun, Mar 1 - Tue, Mar 10

United Airlines flights from Seattle to Osaka

Our best United Airlines deals on Seattle to Osaka flight tickets

United Airlines

Apr 21

SEA7:12 amSeattle/Tacoma Intl

15h 38m

1 stop

KIX2:50 pmOsaka Kansai Intl

May 13

KIX8:30 amOsaka Kansai Intl

26h 04m

2 stops

SEA6:34 pmSeattle/Tacoma Intl

$666

United Airlines

Apr 21

SEA8:45 amSeattle/Tacoma Intl

38h 05m

2 stops

KIX2:50 pmOsaka Kansai Intl

May 13

KIX4:55 pmOsaka Kansai Intl

21h 01m

2 stops

SEA9:56 pmSeattle/Tacoma Intl

$668

United Airlines

Mar 2

SEA8:30 amSeattle/Tacoma Intl

39h 10m

2 stops

KIX4:40 pmOsaka Kansai Intl

Mar 13

KIX8:20 amOsaka Kansai Intl

31h 08m

2 stops

SEA11:28 pmSeattle/Tacoma Intl

$670

Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific deals on Seattle to Osaka flight tickets

Cathay Pacific

Jan 13

SEA7:55 pmSeattle/Tacoma Intl

26h 00m

3 stops

KIX2:55 pmOsaka Kansai Intl

Jan 20

KIX7:05 pmOsaka Kansai Intl

36h 29m

2 stops

SEA2:34 pmSeattle/Tacoma Intl

$1,119

Cathay Pacific

Jan 18

SEA7:20 amSeattle/Tacoma Intl

41h 30m

2 stops

KIX5:50 pmOsaka Kansai Intl

Jan 27

KIX4:15 pmOsaka Kansai Intl

39h 03m

3 stops

SEA2:18 pmSeattle/Tacoma Intl

$1,160

Cathay Pacific

Jan 18

SEA5:53 pmSeattle/Tacoma Intl

43h 27m

2 stops

KIX6:20 amOsaka Kansai Intl

Jan 27

KIX4:15 pmOsaka Kansai Intl

39h 04m

3 stops

SEA2:19 pmSeattle/Tacoma Intl

$1,164

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 1/20

5:55 am-8:35 pm

2 stops21h 40m

Osaka Kansai Intl

Tue 1/27

10:50 am-7:16 pm

2 stops25h 26m

$608

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Thu 2/5

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Thu 2/12

2:40 pm-9:55 am

1 stop12h 15m

$616

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 4/6

12:55 am-8:55 pm

1 stop28h 00m

Osaka Kansai Intl

Tue 4/21

9:10 am-2:55 pm

1 stop21h 45m

$616

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 2/2

8:25 am-8:05 pm

2 stops18h 40m

Osaka Itami

Mon 2/9

12:30 pm-9:55 am

1 stop14h 25m

$618

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 2/3

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Tue 2/10

2:40 pm-9:55 am

1 stop12h 15m

$622

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 1/31

12:10 am-6:05 pm

1 stop24h 55m

Osaka Kansai Intl

Sat 2/7

10:30 am-1:55 pm

1 stop20h 25m

$624

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sat 2/21

3:45 pm-7:30 am

1 stop22h 45m

Osaka Itami

Sat 2/28

8:20 pm-1:20 pm

1 stop34h 00m

$637

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Sat 2/21

3:45 pm-8:00 am

1 stop23h 15m

Kobe

Sat 2/28

9:15 pm-1:20 pm

1 stop33h 05m

$637

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Sun 2/1

11:00 am-10:10 am

1 stop30h 10m

Kobe

Mon 2/9

11:10 am-9:00 am

1 stop14h 50m

$664

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Sun 3/1

11:00 am-10:10 am

1 stop30h 10m

Kobe

Tue 3/10

6:40 pm-10:00 am

1 stop31h 20m

$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 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 $677. 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 $679.

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 $870 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 $697 on momondo.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 56% 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 January 2026, prices for Seattle to Osaka flights are approximately 40% 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	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 10 as of January 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 57% of all bookings. The subsequent popular airlines are Asiana Airlines at 16%, Japan Airlines at 7%, and Air Canada at 6%.

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 11,661 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $595	Free Cancellation	Rating 8.2 500 reviews	Search Asiana Airlines flights
United Airlines	PriceFrom $647	Free Cancellation	Rating 7.4 9,139 reviews	Search United Airlines flights
ANA	PriceFrom $650	Free Cancellation	Rating 8.4 1,060 reviews	Search ANA flights
Korean Air	PriceFrom $660	Free Cancellation	Rating 8.4 1,188 reviews	Search Korean Air flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 10,603 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,671 reviews	Search Japan Airlines flights
STARLUX Airlines	PriceFrom $934	Free Cancellation	Rating 8.9 256 reviews	Search STARLUX Airlines flights
EVA Air	PriceFrom $975	Free Cancellation	Rating 8.4 1,314 reviews	Search EVA Air flights
China Airlines	PriceFrom $1,056	Free Cancellation	Rating 8.3 798 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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Find better results for your trip to Japan

Cheap flights from Seattle to Osaka from $319

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 3/8. 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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Trusted and free

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Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

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United Airlines flights from Seattle to Osaka

Our best United 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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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

What is the cheapest month to fly to Osaka?

How far in advance should I book a flight to Osaka?

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 56% 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 January 2026, prices for Seattle to Osaka flights are approximately 40% cheaper when compared to flights at the same time last year.

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

Asiana Airlines, Japan Airlines, and Korean Air 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: 55% 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 35m.

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

Vancouver (YVR) has the shortest average layover time for this route: 2h 05m.

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

Fastest flight time

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