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$364+ Cheap flights from Osaka (OSA) to Seattle (SEA)

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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Cheap flight deals from Osaka to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Osaka (OSA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$676
(Kiwi.com)

One-way from

$364
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$853
Provider with most accurate pricing for Osaka (OSA)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Osaka (OSA)-Seattle/Tacoma Intl flights.
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From Osaka (OSA) to Seattle/Tacoma Intl
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One-way flight from Osaka (OSA) to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Osaka to Seattle

Cheapest flights from Osaka to Seattle
Explore the most affordable flight options available from Osaka to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:50 amKIX - SEA
1 stop14h 10mMultiple Airlines
Tue 11/1111:00 amSEA - KIX
1 stop18h 45mMultiple Airlines
Deal found 10/11$676
This Kiwi.com deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:45 amKIX - SEA
1 stop19h 10mMultiple Airlines
Mon 12/112:10 amSEA - KIX
1 stop22h 40mMultiple Airlines
Deal found 10/11$723
This Mytrip deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:55 amKIX - SEA
2 stops22h 36mMultiple Airlines
Thu 12/410:05 amSEA - KIX
2 stops19h 40mMultiple Airlines
Deal found 10/13$735
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/911:50 amKIX - SEA
1 stop19h 05mMultiple Airlines
Sun 11/161:45 pmSEA - KIX
1 stop16h 00mMultiple Airlines
Deal found 10/12$760
This Trip.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:15 amKIX - SEA
1 stop25h 25mPhilippine Airlines
Thu 12/49:30 pmSEA - KIX
1 stop29h 05mPhilippine Airlines
Deal found 10/13$762
This Cheapflightsfares deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/253:05 pmKIX - SEA
1 stop20h 35mPhilippine Airlines
Sun 11/309:30 pmSEA - KIX
1 stop23h 35mPhilippine Airlines
Deal found 10/12$764
This oojo deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2510:15 amKIX - SEA
1 stop25h 25mPhilippine Airlines
Tue 12/29:30 pmSEA - KIX
1 stop29h 05mPhilippine Airlines
Deal found 10/11$771
This oojo deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2512:45 pmKIX - SEA
1 stop22h 25mChina Airlines
Sat 11/2912:10 amSEA - KIX
1 stop24h 40mChina Airlines
Deal found 10/12$790
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:00 amKIX - SEA
2 stops23h 37mMultiple Airlines
Wed 12/37:00 amSEA - KIX
1 stop18h 45mMultiple Airlines
Deal found 10/12$796
This Gotogate deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:45 pmKIX - SEA
1 stop22h 25mChina Airlines
Mon 11/1012:10 amSEA - KIX
1 stop24h 40mChina Airlines
Deal found 10/11$799
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/192:40 pmITM - SEA
1 stop12h 55mMultiple Airlines
Fri 1/23:45 pmSEA - ITM
1 stop22h 45mMultiple Airlines
Deal found 10/13$1,175
This American Airlines deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:40 pmITM - SEA
1 stop12h 10mAmerican Airlines
Tue 12/26:05 amSEA - ITM
2 stops20h 15mAmerican Airlines
Deal found 10/11$1,231

Cheapflights Fare Finder

 
Customize your flight search to find flights from Osaka to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 13, 2025.
Use the filters below to find and compare flights from Osaka to Seattle that are best for you.

Fly from

Osaka

Fly to

Seattle

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 10/30

11:50 am-10:00 am

1 stop14h 10m

Seattle/Tacoma Intl

Tue 11/11

11:00 am-10:45 pm

1 stop18h 45m

$676

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 11/25

10:00 am-7:16 pm

2 stops26h 16m

Seattle/Tacoma Intl

Tue 12/2

5:50 am-9:15 pm

2 stops22h 25m

$725

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 3/14

7:25 pm-3:01 pm

1 stop11h 36m

Seattle/Tacoma Intl

Sat 3/21

8:00 pm-5:40 pm

1 stop29h 40m

$766

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 11/25

10:15 am-6:40 pm

1 stop25h 25m

Seattle/Tacoma Intl

Tue 12/2

9:30 pm-7:35 pm

1 stop29h 05m

$771

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 11/25

12:45 pm-6:10 pm

1 stop22h 25m

Seattle/Tacoma Intl

Sat 11/29

12:10 am-5:50 pm

1 stop24h 40m

$790

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 11/26

8:00 am-2:37 pm

2 stops23h 37m

Seattle/Tacoma Intl

Wed 12/3

7:00 am-6:45 pm

1 stop18h 45m

$796

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 10/30

12:45 pm-7:10 pm

1 stop22h 25m

Seattle/Tacoma Intl

Mon 11/10

12:10 am-5:50 pm

1 stop24h 40m

$799

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 12/18

12:20 pm-3:05 pm

1 stop19h 45m

Seattle/Tacoma Intl

Sat 1/3

11:45 pm-11:10 am

1 stop18h 25m

$811

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 3/14

12:20 pm-4:05 pm

1 stop19h 45m

Seattle/Tacoma Intl

Fri 3/20

12:45 am-12:50 pm

1 stop20h 05m

$811

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 11/25

8:25 pm-2:37 pm

2 stops35h 12m

Seattle/Tacoma Intl

Sun 11/30

3:40 pm-10:20 pm

1 stop13h 40m

$817

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 36 results
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Compare providers for flights from Osaka to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Osaka to Seattle in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Osaka-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Osaka-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Osaka-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Osaka-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Osaka-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Osaka to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Osaka 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.

Cheapflights Insights

Everything you need to know about your flight from Osaka to Seattle

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

Find hourly flight availability from Osaka to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Osaka to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the morning.

How much does it cost to fly round-trip from Osaka to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated October 13, 2025.
See what other customers who have flown with EVA Air and ANA from Osaka to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,250 reviews

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.0

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,250 reviews
EVA Air
8.4
Very good
1,250 reviews

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.0

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
ANA
8.4
Very good
984 reviews
EVA Air
8.4
Very good
1,250 reviews

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.0

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Related info for your journey

Find useful and relevant information for your journey from Osaka to Seattle. 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 into for flights to Seattle from Osaka?

    If you book a flight to Seattle from Osaka, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Osaka to Seattle/Tacoma Intl per day from 0 different airlines.

  • How long is the flight from Osaka to Seattle?

    For as low as $766, Air Canada can have you in Seattle from Osaka in 11h 36m. Osaka and Seattle are separated by a distance of 5024 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Osaka to Seattle?

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

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

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

See more FAQs

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