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Cheap flights from Osaka to Seattle from $489

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Osaka to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:20 pm - 9:00 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 40m1 stop Beijing Capital
Multiple Airlines Logo
11:25 am - 6:20 amSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
26h 55m1 stop Hong Kong Intl
$916Multiple Airlines
Mon, Oct 12 - Wed, Oct 28
Delta Logo
6:10 pm - 11:51 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 41m1 stop Incheon Intl
Delta Logo
12:40 pm - 10:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
17h 00m1 stop Incheon Intl
$926Delta
Thu, Jan 14 - Sun, Jan 31
Delta Logo
6:10 pm - 11:51 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 41m1 stop Incheon Intl
Delta Logo
12:40 pm - 10:45 amSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
29h 05m1 stop Incheon Intl
$926Delta
Thu, Jan 14 - Wed, Jan 27
Delta Logo
6:10 pm - 11:51 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 41m1 stop Incheon Intl
Delta Logo
12:50 pm - 8:45 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
14h 55m1 stop Incheon Intl
$926Delta
Thu, Jan 14 - Tue, Feb 2
Delta Logo
6:10 pm - 11:51 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 41m1 stop Incheon Intl
Delta Logo
12:40 pm - 10:45 amSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
29h 05m1 stop Incheon Intl
$926Delta
Thu, Jan 14 - Thu, Jan 28
Delta Logo
6:10 pm - 11:51 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 41m1 stop Incheon Intl
Delta Logo
12:50 pm - 10:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
16h 50m1 stop Incheon Intl
$926Delta
Thu, Jan 14 - Mon, Feb 1
Multiple Airlines Logo
2:20 pm - 9:00 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 40m1 stop Beijing Capital
Multiple Airlines Logo
11:25 am - 2:45 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
35h 20m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl
$940Multiple Airlines
Mon, Oct 12 - Wed, Oct 28
Hainan Airlines Logo
2:35 pm - 8:20 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
34h 45m1 stop Beijing Capital
Hainan Airlines Logo
10:20 am - 12:35 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
33h 15m1 stop Beijing Capital
$978Hainan Airlines
Mon, Nov 23 - Sat, Dec 5
Air Canada Logo
7:25 pm - 6:22 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
15h 57m1 stop Vancouver Intl
Air Canada Logo
7:05 pm - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
29h 35m1 stop Vancouver Intl
$1,067Air Canada
Thu, Nov 5 - Thu, Nov 12
Air Canada Logo
7:25 pm - 6:22 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
15h 57m1 stop Vancouver Intl
Air Canada Logo
7:05 pm - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
29h 35m1 stop Vancouver Intl
$1,074Air Canada
Thu, Nov 5 - Thu, Nov 12

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Korean Air flights from Osaka to Seattle

Our best Korean Air deals on Osaka to Seattle flight tickets
Korean Air
Nov 4
KIX11:55 amOsaka Kansai Intl
14h 10m
1 stop
SEA9:05 amSeattle/Tacoma Intl
Nov 10
SEA12:10 amSeattle/Tacoma Intl
29h 30m
1 stop
KIX10:40 pmOsaka Kansai Intl
$1,111
Korean Air
Nov 4
UKB11:10 amKobe
14h 55m
1 stop
SEA9:05 amSeattle/Tacoma Intl
Nov 10
SEA12:10 amSeattle/Tacoma Intl
24h 30m
1 stop
UKB5:40 pmKobe
$1,153
Korean Air
Jan 14
UKB11:10 amKobe
14h 55m
1 stop
SEA9:05 amSeattle/Tacoma Intl
Jan 30
SEA12:10 amSeattle/Tacoma Intl
17h 00m
1 stop
UKB10:10 amKobe
$1,159

Japan Airlines flights from Osaka to Seattle

Our best Japan Airlines deals on Osaka to Seattle flight tickets
Japan Airlines
Dec 24
KIX8:05 pmOsaka Kansai Intl
30h 50m
1 stop
SEA9:55 amSeattle/Tacoma Intl
Jan 10
SEA6:42 pmSeattle/Tacoma Intl
20h 48m
2 stops
KIX8:30 amOsaka Kansai Intl
$1,141
Japan Airlines
Dec 24
ITM2:40 pmOsaka Itami
12h 15m
1 stop
SEA9:55 amSeattle/Tacoma Intl
Jan 10
SEA7:10 amSeattle/Tacoma Intl
32h 35m
2 stops
ITM8:45 amOsaka Itami
$1,182
Japan Airlines
Dec 24
ITM2:40 pmOsaka Itami
12h 15m
1 stop
SEA9:55 amSeattle/Tacoma Intl
Jan 10
SEA7:10 amSeattle/Tacoma Intl
32h 35m
2 stops
ITM8:45 amOsaka Itami
$1,189

momondo Fare Finder

 
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 Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 10/12

2:20 pm-9:00 am

1 stop34h 40m

Seattle/Tacoma Intl

Wed 10/28

11:25 am-6:20 am

1 stop26h 55m

$916

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 1/14

6:10 pm-11:51 am

1 stop34h 41m

Seattle/Tacoma Intl

Sun 1/31

12:40 pm-10:40 pm

1 stop17h 00m

$926

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 1/14

6:10 pm-11:51 am

1 stop34h 41m

Seattle/Tacoma Intl

Wed 1/27

12:40 pm-10:45 am

1 stop29h 05m

$926

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 1/14

6:10 pm-11:51 am

1 stop34h 41m

Seattle/Tacoma Intl

Tue 2/2

12:50 pm-8:45 pm

1 stop14h 55m

$926

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 1/14

6:10 pm-11:51 am

1 stop34h 41m

Seattle/Tacoma Intl

Thu 1/28

12:40 pm-10:45 am

1 stop29h 05m

$926

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 1/14

6:10 pm-11:51 am

1 stop34h 41m

Seattle/Tacoma Intl

Mon 2/1

12:50 pm-10:40 pm

1 stop16h 50m

$926

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 10/12

2:20 pm-9:00 am

1 stop34h 40m

Seattle/Tacoma Intl

Wed 10/28

11:25 am-2:45 pm

2 stops35h 20m

$940

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 11/23

2:35 pm-8:20 am

1 stop34h 45m

Seattle/Tacoma Intl

Sat 12/5

10:20 am-12:35 pm

1 stop33h 15m

$978
Quickest round-trip

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 11/5

7:25 pm-6:22 pm

1 stop15h 57m

Seattle/Tacoma Intl

Thu 11/12

7:05 pm-5:40 pm

1 stop29h 35m

$1,067

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 11/5

7:25 pm-6:22 pm

1 stop15h 57m

Seattle/Tacoma Intl

Thu 11/12

7:05 pm-5:40 pm

1 stop29h 35m

$1,074

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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

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

Prices are currently low for flights on this route.

Typical prices usually range from $1,289 to $1,684.
The lowest price recently found on this route was $916.

What is the cheapest month to fly to Seattle?

In general, May is the cheapest month to fly from Osaka to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Seattle in May, then you should wait until January to fly from Osaka, when ticket prices are also cheap, with an average price of $0.

How have Osaka to Seattle flight prices changed over time?

As of September 2026, prices for Osaka to Seattle flights are approximately 6% more expensive 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

Best Price Found

$489

Fastest flight time

12h 00m

Direct flights

None
The best one-way flight to Seattle from Osaka in the past 72 hours is $489. The best round-trip flight deal from Osaka to Seattle found on momondo in the last 72 hours is $916.
The fastest flight from Osaka to Seattle takes 12h 00m
There are no direct flights from Osaka to Seattle. There are no popular flight routes from Osaka to Seattle.
Search flight deals

Frequently asked questions about flying from Osaka to Seattle

  • 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 00m.

  • 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
11,661 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
Kent
Redmond
Lakewood
Federal Way
Fife
Tukwila
Puyallup
Lynnwood
Cle Elum
Marysville
Lacey
Centralia
Kirkland
Shoreline

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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