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

United Airlines, Cathay Pacific, and Japan Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Osaka

What airlines fly to Osaka?

ANA, Japan 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 64% 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 has the shortest travel time from Seattle to Osaka?

Flights connecting via Tokyo (HND) have the shortest average one-way travel time: 13h 18m.

Which layover airport offers the lowest fares from Seattle to Osaka?

Flights via Tokyo (HND) offer the lowest average round-trip price of $719.

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 38m.

Which airport is the most popular layover for flights between Seattle and Osaka?

Tokyo (HND) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

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 September 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.

$385 Cheap Flights from Seattle to Osaka in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Osaka

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:45 pm - 10:30 amSEA Seattle/Tacoma Intl-UKB Kobe

17h 45m1 stop Taipei City Taiwan Taoyuan Intl

11:30 am - 3:05 pmUKB Kobe-SEA Seattle/Tacoma Intl

20h 35m1 stop Taipei City Taiwan Taoyuan Intl

$763STARLUX Airlines

Sun, Feb 28 - Sun, Mar 7

11:45 pm - 4:30 pmSEA Seattle/Tacoma Intl-UKB Kobe

23h 45m1 stop Taipei City Taiwan Taoyuan Intl

11:30 am - 3:05 pmUKB Kobe-SEA Seattle/Tacoma Intl

20h 35m1 stop Taipei City Taiwan Taoyuan Intl

$763STARLUX Airlines

Mon, Feb 22 - Thu, Mar 4

10:10 am - 5:40 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

14h 30m1 stop Vancouver Intl

7:25 pm - 9:57 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

19h 32m1 stop Vancouver Intl

$773Air Canada

Wed, Feb 10 - Wed, Feb 17

8:40 am - 5:40 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 00m1 stop Vancouver Intl

7:25 pm - 6:22 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

15h 57m1 stop Vancouver Intl

$773Air Canada

Tue, Feb 9 - Wed, Feb 24

3:45 pm - 7:30 amSEA Seattle/Tacoma Intl-ITM Osaka Itami

22h 45m1 stop Tokyo Haneda

2:30 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

15h 50m1 stop Tokyo Haneda

$850ANA

Mon, Jan 18 - Fri, Jan 29

3:45 pm - 7:30 amSEA Seattle/Tacoma Intl-ITM Osaka Itami

22h 45m1 stop Tokyo Haneda

12:00 pm - 1:20 pmITM Osaka Itami-SEA Seattle/Tacoma Intl

18h 20m1 stop Tokyo Haneda

$850ANA

Wed, Feb 10 - Wed, Feb 17

10:03 am - 8:20 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

17h 17m2 stops Vancouver Intl Tokyo Narita

2:40 pm - 7:06 amITM Osaka Itami-SEA Seattle/Tacoma Intl

33h 26m2 stops Tokyo Narita Vancouver Intl

$885Japan Airlines

Wed, Nov 25 - Thu, Dec 10

10:03 am - 8:20 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

17h 17m2 stops Vancouver Intl Tokyo Narita

2:40 pm - 7:06 amITM Osaka Itami-SEA Seattle/Tacoma Intl

33h 26m2 stops Tokyo Narita Vancouver Intl

$885Japan Airlines

Wed, Nov 25 - Tue, Dec 8

12:10 am - 6:30 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

25h 20m1 stop Incheon Intl

7:45 pm - 1:55 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

35h 10m1 stop Incheon Intl

$982Asiana Airlines

Mon, Nov 23 - Wed, Dec 9

12:10 am - 9:00 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 50m1 stop Incheon Intl

10:30 am - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 45m1 stop Incheon Intl

$983Asiana Airlines

Mon, Oct 5 - Thu, Oct 15

Cheap last minute flights

Enter your travel dates to find the best prices.

11:45 am - 6:40 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

26h 55m1 stop Hong Kong Intl

6:30 pm - 10:05 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

31h 35m1 stop Hong Kong Intl

$852Cathay Pacific

Wed, Sep 16 - Tue, Sep 29

11:45 am - 6:40 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

26h 55m1 stop Hong Kong Intl

7:05 pm - 8:45 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

30h 40m1 stop Hong Kong Intl

$864Cathay Pacific

Wed, Sep 16 - Mon, Nov 16

1:15 pm - 7:50 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

14h 35m1 stop Tokyo Narita

2:35 pm - 10:35 amITM Osaka Itami-SEA Seattle/Tacoma Intl

12h 00m1 stop Tokyo Narita

$1,003Japan Airlines

Wed, Sep 16 - Tue, Sep 29

4:30 pm - 9:45 pmSEA Seattle/Tacoma Intl-UKB Kobe

13h 15m1 stop Tokyo Haneda

7:05 am - 2:25 pmUKB Kobe-SEA Seattle/Tacoma Intl

23h 20m1 stop Tokyo Haneda

$1,008ANA

Wed, Sep 16 - Tue, Sep 29

8:41 am - 7:50 pmSEA Seattle/Tacoma Intl-ITM Osaka Itami

19h 09m2 stops San Francisco Tokyo Narita

2:35 pm - 10:35 amITM Osaka Itami-SEA Seattle/Tacoma Intl

12h 00m1 stop Tokyo Narita

$1,008Japan Airlines

Wed, Sep 16 - Tue, Sep 29

4:30 pm - 7:50 amSEA Seattle/Tacoma Intl-UKB Kobe

23h 20m1 stop Tokyo Haneda

9:15 pm - 2:25 pmUKB Kobe-SEA Seattle/Tacoma Intl

33h 10m1 stop Tokyo Haneda

$1,038ANA

Mon, Sep 21 - Tue, Sep 29

7:15 pm - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

29h 10m1 stop Vancouver Intl

6:00 pm - 9:04 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

43h 04m2 stops Vancouver Intl Toronto Pearson Intl

$5,285Air Canada

Sat, Sep 19 - Thu, Oct 1

3:00 pm - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 25m1 stop Vancouver Intl

10:30 am - 9:04 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

50h 34m2 stops Incheon Intl Toronto Pearson Intl

$5,292Air Canada

Sat, Sep 19 - Fri, Oct 2

12:10 am - 9:35 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

29h 25m1 stop Incheon Intl

10:30 am - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 45m1 stop Incheon Intl

$6,237Asiana Airlines

Fri, Sep 18 - Thu, Oct 1

12:10 am - 6:30 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

26h 20m1 stop Incheon Intl

12:15 am - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

31h 00m1 stop Incheon Intl

$6,387Asiana Airlines

Fri, Sep 18 - Sat, Oct 3

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Hainan Airlines flights from Seattle to Osaka

Our best Hainan Airlines deals on Seattle to Osaka flight tickets

Hainan Airlines

Feb 27

SEA10:20 amSeattle/Tacoma Intl

33h 15m

1 stop

KIX12:35 pmOsaka Kansai Intl

Mar 8

KIX2:35 pmOsaka Kansai Intl

34h 45m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$884

Hainan Airlines

Nov 28

SEA10:20 amSeattle/Tacoma Intl

33h 15m

1 stop

KIX12:35 pmOsaka Kansai Intl

Dec 7

KIX2:35 pmOsaka Kansai Intl

34h 45m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$889

STARLUX Airlines flights from Seattle to Osaka

Our best STARLUX Airlines deals on Seattle to Osaka flight tickets

STARLUX Airlines

Feb 18

SEA11:45 pmSeattle/Tacoma Intl

17h 45m

1 stop

UKB10:30 amKobe

Feb 28

UKB11:30 amKobe

20h 35m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

$763

STARLUX Airlines

Feb 22

SEA11:45 pmSeattle/Tacoma Intl

18h 25m

1 stop

KIX11:10 amOsaka Kansai Intl

Mar 3

KIX2:00 pmOsaka Kansai Intl

18h 05m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

$767

STARLUX Airlines

Jan 10

SEA11:45 pmSeattle/Tacoma Intl

17h 45m

1 stop

UKB10:30 amKobe

Jan 24

UKB11:30 amKobe

20h 35m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

$772

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleKobe

SEA Seattle/Tacoma Intl - UKB Kobe

SEAUKB

Seattle/Tacoma Intl

Sun 2/28

11:45 pm-10:30 am

1 stop17h 45m

Kobe

Sun 3/7

11:30 am-3:05 pm

1 stop20h 35m

$763

SeattleKobe

SEA Seattle/Tacoma Intl - UKB Kobe

SEAUKB

Seattle/Tacoma Intl

Mon 2/22

11:45 pm-4:30 pm

1 stop23h 45m

Kobe

Thu 3/4

11:30 am-3:05 pm

1 stop20h 35m

$763

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Wed 2/10

10:10 am-5:40 pm

1 stop14h 30m

Osaka Kansai Intl

Wed 2/17

7:25 pm-9:57 pm

1 stop19h 32m

$773

Quickest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 2/9

8:40 am-5:40 pm

1 stop16h 00m

Osaka Kansai Intl

Wed 2/24

7:25 pm-6:22 pm

1 stop15h 57m

$773

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Mon 1/18

3:45 pm-7:30 am

1 stop22h 45m

Osaka Itami

Fri 1/29

2:30 pm-1:20 pm

1 stop15h 50m

$850

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 2/10

3:45 pm-7:30 am

1 stop22h 45m

Osaka Itami

Wed 2/17

12:00 pm-1:20 pm

1 stop18h 20m

$850

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 11/25

10:03 am-8:20 pm

2 stops17h 17m

Osaka Itami

Thu 12/10

2:40 pm-7:06 am

2 stops33h 26m

$885

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 11/25

10:03 am-8:20 pm

2 stops17h 17m

Osaka Itami

Tue 12/8

2:40 pm-7:06 am

2 stops33h 26m

$885

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 11/23

12:10 am-6:30 pm

1 stop25h 20m

Osaka Kansai Intl

Wed 12/9

7:45 pm-1:55 pm

1 stop35h 10m

$982

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 10/5

12:10 am-9:00 am

1 stop16h 50m

Osaka Kansai Intl

Thu 10/15

10:30 am-3:15 pm

1 stop20h 45m

$983

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?

Prices are currently low for flights on this route.

Typical prices usually range from $861 to $1,135.
The lowest price recently found on this route was $763.

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 $688. 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 $744.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 52% 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 September 2026, prices for Seattle to Osaka flights are approximately 36% 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

Best Price Found	$385
Fastest flight time	13h 15m
Direct flights	None

The best one-way flight to Osaka from Seattle in the past 72 hours is $385. The best round-trip flight deal from Seattle to Osaka found on momondo in the last 72 hours is $763.

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 September 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 39% of all bookings. The subsequent popular airlines are Asiana Airlines at 17%, Japan Airlines at 13%, and Air Canada at 9%.

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 12,930 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $565	Free Cancellation	Rating 8.1 561 reviews	Search Asiana Airlines flights
ANA	PriceFrom $649	Free Cancellation	Rating 8.3 1,315 reviews	Search ANA flights
Air Canada	PriceFrom $675	Free Cancellation	Rating 7.1 11,625 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $788	Free Cancellation	Rating 8.3 1,913 reviews	Search Japan Airlines flights

Nara

Nishinomiya

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 10/15

Thu 10/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Japan

Nearby airports

Airlines

Cabin classes

Other Japan destinations

Other flights from Seattle

Complete your trip

Feeling lucky

Fly into one of these airports located in Osaka

Osaka Itami Airport

Osaka Kansai Intl Airport

Cheap flights from Seattle to Osaka from $385

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 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Hainan Airlines flights from Seattle to Osaka

Our best Hainan Airlines deals on Seattle to Osaka flight tickets

STARLUX Airlines flights from Seattle to Osaka

Our best STARLUX Airlines deals on Seattle to Osaka flight tickets

momondo Fare Finder

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 typical price of a round-trip flight between Seattle and Osaka?

What is the cheapest month to fly 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

Best Price Found

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

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

Complete your trip to Osaka

Explore popular destinations other users love

According to popular flight searches on momondo this year