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$558+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
Jun 21 — Jun 281
Sun 6/21
Sun 6/28
1 adult, Economy
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Find cheap flights from Osaka to Seattle with Cheapflights

1. Tell us where you want to go

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Cheap 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 May 22, 2026.

This Gotogate deal was found by Cheapflights users on 5/21. 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.
Sun 7/122:15 am
KIX
-
SEA
1 stop29h 30m
Multiple Airlines
Sun 7/2612:10 am
SEA
-
KIX
1 stop29h 25m
Multiple Airlines
Deal found 5/21$962
This Booking.com deal was found by Cheapflights users on 5/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:35 pm
KIX
-
SEA
1 stop34h 25m
Multiple Airlines
Wed 11/113:40 pm
SEA
-
KIX
1 stop13h 40m
Multiple Airlines
Deal found 5/21$1,010
This Justfly.com deal was found by Cheapflights users on 5/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:30 am
KIX
-
SEA
1 stop21h 45m
Asiana Airlines
Mon 9/2812:10 am
SEA
-
KIX
1 stop26h 20m
Asiana Airlines
Deal found 5/22$1,035
This Gotogate deal was found by Cheapflights users on 5/20. 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 12/242:30 pm
KIX
-
SEA
1 stop20h 40m
China Airlines
Sun 1/312:10 am
SEA
-
KIX
1 stop24h 40m
China Airlines
Deal found 5/20$1,051
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 9/137:45 am
KIX
-
SEA
2 stops48h 35m
Multiple Airlines
Tue 9/2211:10 pm
SEA
-
KIX
1 stop28h 25m
Multiple Airlines
Deal found 5/22$1,065
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 9/1810:30 am
KIX
-
SEA
1 stop20h 45m
Asiana Airlines
Sun 9/2712:10 am
SEA
-
KIX
1 stop16h 50m
Asiana Airlines
Deal found 5/22$1,069
This Asiana Airlines deal was found by Cheapflights users on 5/22. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:30 am
KIX
-
SEA
1 stop20h 45m
Asiana Airlines
Mon 9/2812:10 am
SEA
-
KIX
1 stop16h 50m
Asiana Airlines
Deal found 5/22$1,070
This Gotogate deal was found by Cheapflights users on 5/18. 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.
Mon 6/227:05 pm
KIX
-
SEA
1 stop16h 10m
China Airlines
Sun 6/281:15 am
SEA
-
KIX
1 stop19h 35m
China Airlines
Deal found 5/18$1,072
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 7/72:00 pm
ITM
-
SEA
2 stops25h 59m
Multiple Airlines
Tue 7/214:30 pm
SEA
-
ITM
1 stop22h 55m
Multiple Airlines
Deal found 5/21$1,232
This Alaska Airlines deal was found by Cheapflights users on 5/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:35 pm
ITM
-
SEA
1 stop12h 30m
Multiple Airlines
Sun 9/271:20 pm
SEA
-
ITM
1 stop14h 30m
Multiple Airlines
Deal found 5/22$1,238
This Air Canada deal was found by Cheapflights users on 5/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:00 pm
ITM
-
SEA
2 stops24h 42m
Air Canada
Sun 10/185:40 am
SEA
-
ITM
2 stops21h 15m
Air Canada
Deal found 5/22$1,287
This Air Canada deal was found by Cheapflights users on 5/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:00 pm
ITM
-
SEA
2 stops24h 48m
Air Canada
Sun 8/307:20 pm
SEA
-
ITM
2 stops31h 35m
Air Canada
Deal found 5/22$1,288

Find 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 May 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$962
(Gotogate)

One-way from

$558
(Kiwi.com)
Provider with most accurate pricing for Osaka (OSA)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Osaka (OSA)-Seattle/Tacoma Intl flights.
Search Deals
From Osaka (OSA) to Seattle/Tacoma Intl
Search Deals
One-way flight from Osaka (OSA) to Seattle/Tacoma Intl
Search Deals

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 May 22, 2026.
Use the filters below to find and compare flights from Osaka to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 6/22

7:05 pm-7:15 pm

1 stop16h 10m

Seattle/Tacoma Intl

Sun 6/28

1:15 am-12:50 pm

1 stop19h 35m

$1,072

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

1:10 pm-7:15 pm

1 stop22h 05m

Seattle/Tacoma Intl

Tue 9/15

1:15 am-12:50 pm

1 stop19h 35m

$1,082

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 6/18

7:05 pm-7:15 pm

1 stop16h 10m

Seattle/Tacoma Intl

Mon 10/5

1:15 am-12:00 pm

1 stop18h 45m

$1,123

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 7/7

7:05 pm-8:13 am

2 stops29h 08m

Seattle/Tacoma Intl

Mon 7/20

1:55 am-12:50 pm

1 stop18h 55m

$1,129

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 8/17

2:00 pm-11:59 pm

2 stops25h 59m

Seattle/Tacoma Intl

Thu 8/20

1:55 am-12:00 pm

1 stop18h 05m

$1,152

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 7/13

10:30 am-3:45 pm

1 stop21h 15m

Seattle/Tacoma Intl

Tue 8/18

12:10 am-9:00 am

1 stop16h 50m

$1,196

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/16

7:05 pm-7:15 pm

1 stop16h 10m

Seattle/Tacoma Intl

Thu 10/8

1:15 am-6:05 pm

1 stop24h 50m

$1,199

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/16

2:00 pm-7:15 pm

1 stop21h 15m

Seattle/Tacoma Intl

Mon 10/5

1:15 am-12:50 pm

1 stop19h 35m

$1,199

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 7/2

1:10 pm-7:45 pm

1 stop22h 35m

Seattle/Tacoma Intl

Thu 7/9

8:15 pm-12:00 pm

2 stops23h 45m

$1,256

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 7/12

7:05 pm-7:45 pm

1 stop16h 40m

Seattle/Tacoma Intl

Sat 8/15

1:55 am-6:05 pm

1 stop24h 10m

$1,258

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Showing 1-10 of 38 resultsSorted by cheapest first
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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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 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
No data available for this route at this time. Please check back soon.

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 May 22, 2026.
See what other customers who have flown with STARLUX Airlines 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.
STARLUX Airlines
8.9
Very good
318 reviews

Food

8.6

Overall

8.9

Boarding

9.0

Comfort

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again
STARLUX Airlines
8.9
Very good
318 reviews
STARLUX Airlines
8.9
Very good
318 reviews

Food

8.6

Overall

8.9

Boarding

9.0

Comfort

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

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 1 airline.

  • How long is the flight from Osaka to Seattle?

    For as low as $1,539, China Airlines can have you in Seattle from Osaka in 12h 45m. Osaka and Seattle are separated by a distance of 4999 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Osaka to Seattle round-trip?

    Air Canada, at $794, was found to be the cheapest airline from Osaka to Seattle..

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

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $424. Users have also found prices from $482 and $484 on China Airlines and EVA Air, respectively.

  • 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Osaka to Seattle

Discover the top airline that operate flights from Osaka to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$794Average$1,711FlexibilityNo cancel feeOn-time67%

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