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Cheap flights from Osaka to Seattle from $381

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Osaka to Seattle departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Osaka to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:15 am - 2:55 pm
KIX
-
SEA
28h 40m
1 stop
Multiple Airlines Logo
12:55 am - 10:40 pm
SEA
-
KIX
29h 45m
1 stop
$656Multiple Airlines
Thu, Apr 30 - Mon, May 18
Air Canada Logo
6:00 pm - 2:20 pm
KIX
-
SEA
12h 20m
1 stop
Air Canada Logo
7:20 pm - 4:25 pm
SEA
-
KIX
29h 05m
1 stop
$707Air Canada
Tue, May 5 - Tue, May 12
Asiana Airlines Logo
9:30 am - 2:55 pm
KIX
-
SEA
21h 25m
1 stop
Asiana Airlines Logo
12:55 am - 9:00 am
SEA
-
KIX
16h 05m
1 stop
$718Asiana Airlines
Fri, May 1 - Mon, May 18
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$737Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$752Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$758Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$766Air Canada
Tue, Jun 23 - Wed, Sep 16
Multiple Airlines Logo
7:35 am - 10:40 pm
KIX
-
SEA
31h 05m
2 stops
Multiple Airlines Logo
2:55 pm - 4:25 pm
SEA
-
KIX
33h 30m
1 stop
$819Multiple Airlines
Thu, May 7 - Thu, May 14
Japan Airlines Logo
2:35 pm - 10:50 am
ITM
-
SEA
12h 15m
1 stop
Japan Airlines Logo
8:10 am - 7:50 pm
SEA
-
ITM
19h 40m
2 stops
$1,106Japan Airlines
Tue, Jun 23 - Wed, Sep 16
Japan Airlines Logo
2:35 pm - 10:50 am
ITM
-
SEA
12h 15m
1 stop
Japan Airlines Logo
8:10 am - 7:50 pm
SEA
-
ITM
19h 40m
2 stops
$1,109Japan Airlines
Tue, Jun 23 - Wed, Sep 16

Asiana Airlines flights from Osaka to Seattle

Our best Asiana Airlines deals on Osaka to Seattle flight tickets
Asiana Airlines
May 1
KIX9:30 amOsaka Kansai Intl
21h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
May 18
SEA12:55 amSeattle/Tacoma Intl
16h 05m
1 stop
KIX9:00 amOsaka Kansai Intl
$718
Asiana Airlines
Apr 26
KIX10:30 amOsaka Kansai Intl
20h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
May 10
SEA12:55 amSeattle/Tacoma Intl
28h 40m
1 stop
KIX9:35 pmOsaka Kansai Intl
$926

China Airlines flights from Osaka to Seattle

Our best China Airlines deals on Osaka to Seattle flight tickets
China Airlines
May 3
KIX7:05 pmOsaka Kansai Intl
16h 10m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
May 9
SEA1:15 amSeattle/Tacoma Intl
19h 35m
1 stop
KIX12:50 pmOsaka Kansai Intl
$880
China Airlines
Aug 3
KIX7:05 pmOsaka Kansai Intl
16h 40m
1 stop
SEA7:45 pmSeattle/Tacoma Intl
Aug 16
SEA1:55 amSeattle/Tacoma Intl
18h 55m
1 stop
KIX12:50 pmOsaka Kansai Intl
$884
China Airlines
Aug 3
KIX7:05 pmOsaka Kansai Intl
16h 40m
1 stop
SEA7:45 pmSeattle/Tacoma Intl
Aug 16
SEA1:55 amSeattle/Tacoma Intl
18h 55m
1 stop
KIX12:50 pmOsaka Kansai Intl
$885

momondo 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, momondo users made 832,500 searches. Data last updated March 24, 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

Thu 4/30

2:15 am-2:55 pm

1 stop28h 40m

Seattle/Tacoma Intl

Mon 5/18

12:55 am-10:40 pm

1 stop29h 45m

$656

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 5/5

6:00 pm-2:20 pm

1 stop12h 20m

Seattle/Tacoma Intl

Tue 5/12

7:20 pm-4:25 pm

1 stop29h 05m

$707

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 5/1

9:30 am-2:55 pm

1 stop21h 25m

Seattle/Tacoma Intl

Mon 5/18

12:55 am-9:00 am

1 stop16h 05m

$718

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-4:25 pm

1 stop18h 45m

$737

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-4:25 pm

1 stop18h 45m

$752

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-4:25 pm

1 stop18h 45m

$758

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-4:25 pm

1 stop18h 45m

$766

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 5/7

7:35 am-10:40 pm

2 stops31h 05m

Seattle/Tacoma Intl

Thu 5/14

2:55 pm-4:25 pm

1 stop33h 30m

$819
Quickest round-trip

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Tue 6/23

2:35 pm-10:50 am

1 stop12h 15m

Seattle/Tacoma Intl

Wed 9/16

8:10 am-7:50 pm

2 stops19h 40m

$1,106

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Tue 6/23

2:35 pm-10:50 am

1 stop12h 15m

Seattle/Tacoma Intl

Wed 9/16

8:10 am-7:50 pm

2 stops19h 40m

$1,109

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Osaka to Seattle

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

How have Osaka to Seattle flight prices changed over time?

As of March 2026, prices for Osaka to Seattle flights are approximately 16% cheaper when compared to flights at the same time last year.

When to book flights from Osaka to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Osaka to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Osaka to Seattle (OSA to SEA) flight deals and tips

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

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from Osaka to Seattle takes 12h 15m
There are no direct flights from Osaka to Seattle. There are no popular flight routes from Osaka to Seattle.
Search flight deals

  • How far is Osaka to Seattle/Tacoma Intl by plane?

    The straight-line distance from Osaka to Seattle/Tacoma Intl is 4994.7 mi. By plane, this route typically takes 12h 15m.

  • When did momondo last update prices for flights from Osaka to Seattle/Tacoma Intl Airport?

    Prices for flights from Osaka to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Osaka to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Osaka to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Osaka to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Osaka to Seattle?

Best airlines flying from Osaka to Seattle

Compare and see reviews for airlines that fly from Osaka to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $794Free CancellationRating
7.1
10,836 reviews
Search Air Canada flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Redmond
Marysville
Puyallup
Lakewood
Cle Elum
Tukwila
Federal Way
Centralia
Fife
Westport
Kirkland
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Osaka to Seattle?

Finding the right flight to Seattle from Osaka is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Osaka to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Osaka which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Osaka to Seattle?

Once you have performed a search for Osaka to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Osaka to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Osaka to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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