What are the cheapest airlines to fly from Seattle to Japan one-way?

The cheapest airlines for a one-way flight from Seattle to Japan are Japan Airlines ($411), ANA ($414), and Delta ($428).

What are the most popular routes from Seattle to Japan?

When deciding which route to take from Seattle to Japan consider Seattle/Tacoma Intl - Tokyo Narita, Seattle/Tacoma Intl - Tokyo Haneda or Seattle/Tacoma Intl - Osaka Kansai Intl as they are the most popular.

What are the most popular airlines that fly from Seattle to Japan?

EVA Air, China Airlines and Delta are the most popular airlines when flying from Seattle to Japan.

How far in advance should I book a flight from Seattle to Japan?

Users have found that booking a flight from Seattle to Japan at least 49 days early can save you up to 7% on average compared to booking a flight this week. If booking 49 days before your flight isn’t an option for you, users have found flights from Seattle to Japan for as little as $976 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $976 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Japan?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Japan. Flights to Japan from Seattle in February are about $1,163 on average during February, but can be found for as low as $698.

What airport do you fly from for flights from Seattle to Japan?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Japan. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Can I find deals for flights from Seattle to Japan that include hotel bookings?

Yes. In addition to deals on Seattle to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seattle to Japan?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Japan.

Can I find deals for business class flights from Seattle to Japan?

Yes. Cheapflights offers flight deals from Seattle to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$685+ Flights from Seattle to Japan

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Cheap flight deals from Seattle to Japan

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$692 (Cheapflightsfares)
One-way from	$411 (Cheapflightsfares)
Popular in	December
Cheapest in	February
Average price	$1,116
Good round-trip deal	$778 or less
Good one-way deal	$439 or less

Provider with most accurate pricing for Seattle/Tacoma Intl-Tokyo (TYO) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Tokyo (TYO) flights.

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From Seattle/Tacoma Intl to Japan

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One-way flight from Seattle/Tacoma Intl to Japan

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($64 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Japan.

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Price to beat on a one-way flight from Seattle/Tacoma Intl to Japan.

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Find flight deals from Seattle to Japan

Cheapest flights from Seattle to Japan
Explore the most affordable flight options available from Seattle to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

Mon 10/204:30 pmSEA - FUK

1 stop24h 55mANA

Fri 11/73:15 pmFUK - SEA

1 stop15h 05mANA

Deal found 3/3

$690

Wed 4/234:30 pmSEA - OKA

1 stop25h 45mANA

Wed 5/71:05 pmOKA - SEA

1 stop17h 20mANA

Deal found 3/3

$692

Tue 4/294:30 pmSEA - CTS

1 stop23h 55mANA

Wed 5/146:30 pmCTS - SEA

1 stop11h 55mANA

Deal found 3/3

$694

Wed 4/1611:30 pmSEA - FUK

1 stop23h 05mPhilippine Airlines

Wed 4/233:35 pmFUK - SEA

1 stop19h 45mPhilippine Airlines

Deal found 3/2

$697

Tue 10/218:00 amSEA - FUK

1 stop18h 40mAlaska Airlines

Wed 11/58:40 pmFUK - SEA

1 stop17h 05mAlaska Airlines

Deal found 3/3

$700

Tue 10/214:30 pmSEA - FUK

1 stop33h 10mUnited Airlines

Tue 11/412:30 pmFUK - SEA

1 stop17h 50mUnited Airlines

Deal found 3/3

$705

Tue 10/214:30 pmSEA - HIJ

1 stop35h 05mUnited Airlines

Tue 11/1112:55 pmHIJ - SEA

1 stop17h 25mUnited Airlines

Deal found 3/2

$708

Mon 4/217:15 amSEA - HND

1 stop14h 40mUnited Airlines

Wed 5/712:30 amHND - SEA

1 stop29h 30mUnited Airlines

Deal found 3/3

$720

Sat 11/14:35 pmSEA - NRT

1 stop30h 45mUnited Airlines

Wed 11/195:45 pmNRT - SEA

1 stop21h 33mUnited Airlines

Deal found 3/3

$721

Thu 9/1811:45 amSEA - HND

Nonstop10h 30mDelta

Thu 10/24:05 pmHND - SEA

Nonstop9h 05mDelta

Deal found 3/3

$721

Tue 4/221:30 pmSEA - KMJ

1 stop27h 50mJapan Airlines

Thu 5/112:00 pmKMJ - SEA

2 stops14h 25mJapan Airlines

Deal found 3/2

$721

Tue 9/236:35 amSEA - OKA

2 stops23h 45mUnited Airlines

Tue 9/301:05 pmOKA - SEA

3 stops24h 24mUnited Airlines

Deal found 3/2

$722

Best flights from Seattle to Japan
Discover carefully curated flight deals from Seattle to Japan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 3, 2025.

Wed 4/234:30 pmSEA - OKA

1 stop25h 45mANA

Wed 5/71:05 pmOKA - SEA

1 stop17h 20mANA

Deal found 3/3

$692

Wed 4/1611:30 pmSEA - FUK

1 stop23h 05mPhilippine Airlines

Wed 4/233:35 pmFUK - SEA

1 stop19h 45mPhilippine Airlines

Deal found 3/2

$697

Tue 4/221:30 pmSEA - KMJ

1 stop27h 50mJapan Airlines

Thu 5/112:00 pmKMJ - SEA

2 stops14h 25mJapan Airlines

Deal found 3/2

$721

Wed 4/237:15 amSEA - OKA

2 stops20h 00mUnited Airlines

Wed 5/77:30 amOKA - SEA

2 stops30h 01mUnited Airlines

Deal found 3/2

$723

Thu 8/286:35 amSEA - CTS

2 stops19h 20mMultiple Airlines

Mon 9/81:40 pmCTS - SEA

2 stops39h 35mMultiple Airlines

Deal found 3/3

$752

Mon 4/2110:25 amSEA - HND

2 stops37h 50mAir Canada

Mon 5/55:00 pmHND - SEA

2 stops41h 33mAir Canada

Deal found 3/3

$779

Tue 4/2211:15 amSEA - HND

Nonstop10h 45mDelta

Mon 5/264:05 pmHND - SEA

Nonstop9h 10mDelta

Deal found 3/3

$801

Mon 4/216:08 amSEA - HND

1 stop16h 12mAmerican Airlines

Wed 4/3010:55 amHND - SEA

1 stop18h 06mAmerican Airlines

Deal found 3/2

$802

Mon 4/211:30 pmSEA - NRT

Nonstop10h 05mAlaska Airlines

Wed 4/305:45 pmNRT - SEA

Nonstop8h 40mAlaska Airlines

Deal found 3/2

$868

Tue 4/812:50 pmSEA - FUK

1 stop15h 10mKorean Air

Thu 4/1710:35 amFUK - SEA

1 stop16h 05mKorean Air

Deal found 3/3

$896

Tue 4/151:10 amSEA - KMJ

1 stop24h 30mChina Airlines

Mon 4/286:40 pmKMJ - SEA

1 stop16h 50mChina Airlines

Deal found 3/3

$928

Tue 4/2212:30 amSEA - OKA

1 stop16h 45mEVA Air

Wed 5/77:55 pmOKA - SEA

1 stop15h 35mEVA Air

Deal found 3/3

$996

Last-minute flights from Seattle to Japan
Discover last-minute flight deals from Seattle to Japan. Data last updated March 3, 2025 and is based on user searches.

Sat 3/87:34 pmSEA - CTS

2 stops31h 01mUnited Airlines

Tue 3/1812:30 pmCTS - SEA

2 stops25h 27mUnited Airlines

Deal found 3/2

$876

Sun 3/911:35 pmSEA - NRT

1 stop21h 10mPhilippine Airlines

Wed 3/191:55 pmNRT - SEA

1 stop21h 15mPhilippine Airlines

Deal found 3/3

$790

Sun 3/911:35 pmSEA - KIX

1 stop27h 40mPhilippine Airlines

Wed 3/1910:05 amKIX - SEA

1 stop25h 05mPhilippine Airlines

Deal found 3/3

$850

Sun 3/96:15 amSEA - NRT

1 stop17h 20mUnited Airlines

Fri 3/145:35 pmNRT - SEA

2 stops17h 03mUnited Airlines

Deal found 3/3

$860

Sun 3/93:01 pmSEA - KIX

2 stops33h 34mUnited Airlines

Wed 3/196:30 pmKIX - SEA

2 stops19h 27mUnited Airlines

Deal found 3/3

$914

Mon 3/104:45 pmSEA - CTS

1 stop25h 50mANA

Fri 3/143:30 pmCTS - SEA

1 stop14h 50mANA

Deal found 3/2

$830

Mon 3/1012:55 pmSEA - HND

1 stop23h 45mUnited Airlines

Wed 3/129:15 pmHND - SEA

Nonstop9h 05mUnited Airlines

Deal found 3/1

$832

Mon 3/107:00 amSEA - HND

1 stop15h 50mANA

Wed 3/194:25 pmHND - SEA

1 stop20h 50mANA

Deal found 3/3

$852

Mon 3/107:00 amSEA - NRT

1 stop16h 00mANA

Wed 3/194:50 pmNRT - SEA

1 stop20h 25mANA

Deal found 3/3

$854

Tue 3/115:22 amSEA - NRT

1 stop18h 08mAmerican Airlines

Thu 3/276:10 pmNRT - SEA

Nonstop8h 45mAmerican Airlines

Deal found 3/2

$871

Tue 3/1112:25 pmSEA - HND

Nonstop10h 55mDelta

Sat 3/154:50 pmHND - SEA

Nonstop9h 25mDelta

Deal found 3/2

$892

Wed 3/1211:35 pmSEA - HND

1 stop22h 20mPhilippine Airlines

Wed 3/263:20 pmHND - SEA

1 stop19h 50mPhilippine Airlines

Deal found 3/2

$804

One-way flights from Seattle to Japan
Search for one-way flight options from Seattle to Japan. Find affordable one-way fares based on user searches. Data last updated March 3, 2025.

Sun 8/248:00 amSEA - HND

1 stop17h 25mJapan Airlines

Deal found 3/3

$411

Wed 4/94:30 pmSEA - HND

Nonstop10h 30mANA

Deal found 3/2

$414

Sun 4/271:30 pmSEA - NRT

Nonstop10h 05mJapan Airlines

Deal found 3/2

$415

Wed 5/71:37 pmSEA - NRT

2 stops30h 48mMultiple Airlines

Deal found 3/2

$418

Tue 7/1511:50 amSEA - HND

Nonstop10h 25mDelta

Deal found 3/2

$428

Tue 3/117:00 amSEA - NRT

1 stop16h 00mANA

Deal found 3/1

$430

Thu 4/2410:25 amSEA - NRT

1 stop12h 30mAir Canada

Deal found 3/1

$431

Mon 5/124:58 pmSEA - HND

2 stops34h 27mMultiple Airlines

Deal found 3/2

$432

Wed 3/126:15 amSEA - NRT

1 stop17h 20mUnited Airlines

Deal found 3/3

$433

Tue 4/295:05 pmSEA - HND

1 stop19h 55mUnited Airlines

Deal found 3/2

$433

Wed 4/3010:25 amSEA - HND

2 stops31h 15mAir Canada

Deal found 3/3

$441

Thu 4/2411:30 amSEA - NRT

2 stops36h 55mWestJet

Deal found 3/3

$449

Find flights from Seattle to Japan within your budget

Fly from

Fly to

Route

Depart

Return

Price

SeattleOkinawa

SEA - OKA

SEAOKA

Seattle/Tacoma Intl

Wed 4/23

4:30 pm-10:15 am

1 stop25h 45m

Okinawa Naha

Wed 5/7

1:05 pm-2:25 pm

1 stop17h 20m

$692

SeattleSapporo

SEA - CTS

SEACTS

Seattle/Tacoma Intl

Tue 4/29

4:30 pm-8:25 am

1 stop23h 55m

Sapporo Chitose

Wed 5/14

6:30 pm-2:25 pm

1 stop11h 55m

$694

SeattleFukuoka

SEA - FUK

SEAFUK

Seattle/Tacoma Intl

Wed 4/16

11:30 pm-2:35 pm

1 stop23h 05m

Fukuoka

Wed 4/23

3:35 pm-7:20 pm

1 stop19h 45m

$697

SeattleTokyo

SEA - HND

SEAHND

Seattle/Tacoma Intl

Mon 4/21

7:15 am-1:55 pm

1 stop14h 40m

Tokyo Haneda

Wed 5/7

12:30 am-2:00 pm

1 stop29h 30m

$720

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Tue 4/22

1:30 pm-9:20 am

1 stop27h 50m

Kumamoto

Thu 5/1

12:00 pm-10:25 am

2 stops14h 25m

$721

SeattleOkinawa

SEA - OKA

SEAOKA

Seattle/Tacoma Intl

Wed 4/23

7:15 am-7:15 pm

2 stops20h 00m

Okinawa Naha

Wed 5/7

7:30 am-9:31 pm

2 stops30h 01m

$723

SeattleSapporo

SEA - CTS

SEACTS

Seattle/Tacoma Intl

Mon 4/28

5:15 am-6:40 pm

2 stops21h 25m

Sapporo Chitose

Thu 5/8

2:30 pm-9:31 pm

3 stops23h 01m

$723

SeattleTokyo

SEA - NRT

SEANRT

Seattle/Tacoma Intl

Wed 4/23

5:10 pm-3:25 pm

2 stops30h 15m

Tokyo Narita

Wed 5/14

5:00 pm-6:30 pm

2 stops17h 30m

$725

SeattleTokyo

SEA - HND

SEAHND

Seattle/Tacoma Intl

Tue 4/22

7:15 am-1:55 pm

1 stop14h 40m

Tokyo Haneda

Mon 5/12

3:50 pm-3:58 pm

1 stop16h 08m

$726

SeattleTokyo

SEA - NRT

SEANRT

Seattle/Tacoma Intl

Thu 4/24

7:15 am-3:25 pm

1 stop16h 10m

Tokyo Narita

Tue 5/13

5:25 pm-3:58 pm

1 stop14h 33m

$727

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 60 results

...

Best time to book a flight from Seattle to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Seattle with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Japan

Get recent, data-driven insights about flights from Seattle to Japan including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to Japan?

Currently, February is the cheapest month in which you can book a flight from Seattle to Japan (average of $864). Flying from Seattle to Japan in December is currently the most expensive (average of $1,687). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to JP?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Japan as you normally would.

Rainfall in Japan by month

In terms of precipitation, rainfall in Japan ranges from 2.0 - 8.3 inches per month. September is typically the wettest month, when rainfall can reach 8.3 in. January is typically the driest time to visit Japan when rainfall is around 2.0 in.

Temperature in Japan by month

If weather is an important factor for your trip to Japan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Japan

Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Seattle to Japan by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

9.1

Wonderful

141 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines

9.1

Wonderful

141 reviews

STARLUX Airlines

9.1

Wonderful

141 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air

8.4

Very good

1,180 reviews

STARLUX Airlines

9.1

Wonderful

141 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air

8.4

Very good

1,035 reviews

STARLUX Airlines

9.1

Wonderful

141 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

ANA

8.4

Very good

833 reviews

STARLUX Airlines

9.1

Wonderful

141 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines

8.3

Very good

1,435 reviews

STARLUX Airlines

9.1

Wonderful

141 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Related info for your journey

What airport do you fly from for flights from Seattle to Japan?
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Japan. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
What are the cheapest airlines to fly from Seattle to Japan one-way?
The cheapest airlines for a one-way flight from Seattle to Japan are Japan Airlines ($411), ANA ($414), and Delta ($428).
What are the most popular routes from Seattle to Japan?
When deciding which route to take from Seattle to Japan consider Seattle/Tacoma Intl - Tokyo Narita, Seattle/Tacoma Intl - Tokyo Haneda or Seattle/Tacoma Intl - Osaka Kansai Intl as they are the most popular.
Can I find deals for flights from Seattle to Japan that include hotel bookings?
Yes. In addition to deals on Seattle to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Japan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Japan.
Can I find deals for business class flights from Seattle to Japan?
Yes. Cheapflights offers flight deals from Seattle to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seattle to Japan?
Currently, February is the cheapest month in which you can book a flight from Seattle to Japan (average of $864). Flying from Seattle to Japan in December is currently the most expensive (average of $1,687). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Seattle to Japan

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$117	Average$1,489	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$494	Average$1,089	FlexibilityNo cancel fee	On-time67%
Hawaiian Airlines	Cheapest$530	Average$1,160	FlexibilityNo cancel fee	On-time85%
Asiana Airlines	Cheapest$648	Average$940	FlexibilityNo cancel fee	On-time76%
ANA	Cheapest$697	Average$1,267	FlexibilityNo cancel fee	On-time80%
China Eastern	Cheapest$719	Average$756	FlexibilityNo cancel fee	On-time62%
Japan Airlines	Cheapest$720	Average$1,245	FlexibilityNo cancel fee	On-time79%
United Airlines	Cheapest$722	Average$1,210	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$723	Average$1,251	FlexibilityNo cancel fee	On-time75%
Philippine Airlines	Cheapest$749	Average$880	FlexibilityNo cancel fee	On-time60%

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$411+ Cheap flights from Seattle (SEA) to Japan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Seattle to Japan

Keep the following information in mind while searching for Seattle to Japan flight deals. Data was last updated March 3, 2025.

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Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Seattle to Japan

Cheapest flights from Seattle to JapanExplore the most affordable flight options available from Seattle to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

Explore the most affordable flight options available from Seattle to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

Find flights from Seattle to Japan within your budget

Best time to book a flight from Seattle to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Seattle with our price prediction graph.

Travel insights for flights from Seattle to Japan

Get recent, data-driven insights about flights from Seattle to Japan including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to Japan?

What is the cheapest time of day to fly from SEA to JP?

Find hourly flight availability from Seattle to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

Rainfall in Japan by month

Plan your trip to Japan by taking into account the average rainfall totals by month.

Temperature in Japan by month

Plan your trip to Japan by taking into account the average temperature totals by month.

Reviews of airlines servicing Japan

Get insights into the airlines that provide service to Japan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Japan. Reviews last updated March 3, 2025.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Seattle to Japan?

What are the cheapest airlines to fly from Seattle to Japan one-way?

What are the most popular routes from Seattle to Japan?

Can I find deals for flights from Seattle to Japan that include hotel bookings?

How can I find direct flights from Seattle to Japan?

Can I find deals for business class flights from Seattle to Japan?

What is the cheapest month to book a flight from Seattle to Japan?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Japan

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Seattle to Japan

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Cheapest flights from Seattle to Japan
Explore the most affordable flight options available from Seattle to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.