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

Hainan Airlines, Air Canada, and American Airlines 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: 62% of momondo users choosing 1-stop flights on this route connected there.

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

Tokyo (HND) has the shortest average layover time for this route: 1h 48m.

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 70% 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 offers the lowest fares from Seattle to Osaka?

Flights via Incheon (ICN) offer the lowest average round-trip price of $705.

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 June 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.

$436 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:10 pm - 2:10 pm

SEA

KIX

23h 00m

1 stop

10:25 am - 8:05 pm

KIX

SEA

25h 40m

1 stop

$840Philippine Airlines

Fr, Sep 11 - So, Okt 11

11:00 am - 12:45 pm

SEA

KIX

33h 45m

1 stop

2:20 pm - 9:00 am

KIX

SEA

34h 40m

1 stop

$845Hainan Airlines

Sa, Aug 22 - Mo, Aug 31

11:55 pm - 2:10 pm

SEA

KIX

22h 15m

1 stop

10:25 am - 6:35 pm

KIX

SEA

25h 10m

1 stop

$846Philippine Airlines

So, Okt 25 - Mo, Nov 2

6:57 am - 4:45 pm

SEA

KIX

16h 48m

1 stop

9:10 pm - 1:20 pm

KIX

SEA

33h 10m

1 stop

$886ANA

Mi, Nov 25 - Di, Dez 1

3:40 pm - 8:35 am

SEA

KIX

23h 55m

1 stop

9:10 pm - 1:20 pm

KIX

SEA

33h 10m

1 stop

$888ANA

Di, Nov 17 - Mo, Nov 30

1:25 pm - 7:50 pm

SEA

ITM

14h 25m

1 stop

2:30 pm - 10:50 am

ITM

SEA

12h 20m

1 stop

$1,037Japan Airlines

Mo, Jul 20 - Fr, Aug 14

7:03 am - 7:50 pm

SEA

ITM

20h 47m

2 stops

2:30 pm - 10:50 am

ITM

SEA

12h 20m

1 stop

$1,048Japan Airlines

Di, Aug 4 - Do, Aug 20

12:50 pm - 5:45 pm

SEA

UKB

36h 55m

1 stop

11:10 am - 9:00 am

UKB

SEA

14h 50m

1 stop

$1,101Korean Air

Do, Okt 22 - Mo, Nov 2

1:15 am - 11:45 am

SEA

UKB

18h 30m

1 stop

11:40 am - 4:10 pm

UKB

SEA

20h 30m

1 stop

$1,104STARLUX Airlines

Fr, Sep 11 - Di, Sep 15

12:50 pm - 10:55 am

SEA

UKB

30h 05m

1 stop

11:55 am - 10:40 am

UKB

SEA

14h 45m

1 stop

$1,105Korean Air

Fr, Sep 11 - So, Okt 11

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Hainan Airlines flights from Seattle to Osaka

Our best Hainan Airlines deals on Seattle to Osaka flight tickets

Hainan Airlines

Aug 22

SEA11:00 amSeattle/Tacoma Intl

33h 45m

1 stop

KIX12:45 pmOsaka Kansai Intl

Aug 31

KIX2:20 pmOsaka Kansai Intl

34h 40m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$845

Hainan Airlines

Aug 22

SEA11:00 amSeattle/Tacoma Intl

33h 45m

1 stop

KIX12:45 pmOsaka Kansai Intl

Aug 31

KIX2:20 pmOsaka Kansai Intl

34h 40m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$848

Hainan Airlines

Sep 12

SEA11:00 amSeattle/Tacoma Intl

33h 45m

1 stop

KIX12:45 pmOsaka Kansai Intl

Oct 12

KIX2:20 pmOsaka Kansai Intl

34h 40m

1 stop

SEA9:00 amSeattle/Tacoma Intl

$854

Philippine Airlines flights from Seattle to Osaka

Our best Philippine Airlines deals on Seattle to Osaka flight tickets

Philippine Airlines

Sep 11

SEA11:10 pmSeattle/Tacoma Intl

23h 00m

1 stop

KIX2:10 pmOsaka Kansai Intl

Oct 11

KIX10:25 amOsaka Kansai Intl

25h 40m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

$840

Philippine Airlines

Nov 30

SEA11:55 pmSeattle/Tacoma Intl

26h 40m

1 stop

KIX7:35 pmOsaka Kansai Intl

Feb 21

KIX10:25 amOsaka Kansai Intl

26h 10m

1 stop

SEA7:35 pmSeattle/Tacoma Intl

$884

Philippine Airlines

Oct 20

SEA11:10 pmSeattle/Tacoma Intl

28h 25m

1 stop

KIX7:35 pmOsaka Kansai Intl

Nov 6

KIX10:25 amOsaka Kansai Intl

26h 10m

1 stop

SEA7:35 pmSeattle/Tacoma Intl

$923

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fr 9/11

11:10 pm-2:10 pm

1 stop23h 00m

Osaka Kansai Intl

So 10/11

10:25 am-8:05 pm

1 stop25h 40m

$840

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sa 8/22

11:00 am-12:45 pm

1 stop33h 45m

Osaka Kansai Intl

Mo 8/31

2:20 pm-9:00 am

1 stop34h 40m

$845

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

So 10/25

11:55 pm-2:10 pm

1 stop22h 15m

Osaka Kansai Intl

Mo 11/2

10:25 am-6:35 pm

1 stop25h 10m

$846

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mi 11/25

6:57 am-4:45 pm

1 stop16h 48m

Osaka Kansai Intl

Di 12/1

9:10 pm-1:20 pm

1 stop33h 10m

$886

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Di 11/17

3:40 pm-8:35 am

1 stop23h 55m

Osaka Kansai Intl

Mo 11/30

9:10 pm-1:20 pm

1 stop33h 10m

$888

Quickest round-trip

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mo 7/20

1:25 pm-7:50 pm

1 stop14h 25m

Osaka Itami

Fr 8/14

2:30 pm-10:50 am

1 stop12h 20m

$1,037

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Di 8/4

7:03 am-7:50 pm

2 stops20h 47m

Osaka Itami

Do 8/20

2:30 pm-10:50 am

1 stop12h 20m

$1,048

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Do 10/22

12:50 pm-5:45 pm

1 stop36h 55m

Kobe

Mo 11/2

11:10 am-9:00 am

1 stop14h 50m

$1,101

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Fr 9/11

1:15 am-11:45 am

1 stop18h 30m

Kobe

Di 9/15

11:40 am-4:10 pm

1 stop20h 30m

$1,104

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Fr 9/11

12:50 pm-10:55 am

1 stop30h 05m

Kobe

So 10/11

11:55 am-10:40 am

1 stop14h 45m

$1,105

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, March 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 $363. If you are unable to visit Osaka during the month of March, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $370.

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 $840 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 $650 on momondo.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 32% 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 June 2026, prices for Seattle to Osaka flights are approximately 27% 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

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 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 5 as of June 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 52% of all bookings. The subsequent popular airlines are Asiana Airlines at 14%, Japan Airlines at 11%, and Air Canada at 8%.

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 12,549 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $565	Free Cancellation	Rating 8.1 545 reviews	Search Asiana Airlines flights
ANA	PriceFrom $649	Free Cancellation	Rating 8.3 1,245 reviews	Search ANA flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 11,226 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,841 reviews	Search Japan Airlines flights

Nara

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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

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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 $446

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 8/30. 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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Hainan Airlines flights from Seattle to Osaka

Our best Hainan Airlines deals on Seattle to Osaka flight tickets

Philippine Airlines flights from Seattle to Osaka

Our best Philippine 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

Find info about flight duration, direct flights, and airports for your flight from Seattle to Osaka

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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According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year