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Cheap flights from Osaka Kansai Intl Airport to Seattle from $373

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 Kansai Intl Airport to Seattle departing on 5/8. 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 Kansai Intl Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:35 pm - 2:55 pm
KIX
-
SEA
18h 20m
1 stop
Multiple Airlines Logo
12:55 am - 10:40 pm
SEA
-
KIX
29h 45m
1 stop
$644Multiple Airlines
Tue, May 12 - Mon, May 18
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
7:20 pm - 4:25 pm
SEA
-
KIX
29h 05m
1 stop
$683Air Canada
Thu, Sep 17 - Sat, Sep 26
Air Canada Logo
6:00 pm - 10:48 pm
KIX
-
SEA
20h 48m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$733Air 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
$765Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 10:05 am
KIX
-
SEA
32h 05m
1 stop
Air Canada Logo
2:55 pm - 4:25 pm
SEA
-
KIX
33h 30m
1 stop
$769Air Canada
Sat, May 9 - Sat, May 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
10:30 am - 4:25 pm
SEA
-
KIX
13h 55m
1 stop
$770Air 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
$772Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 10:48 pm
KIX
-
SEA
20h 48m
1 stop
Air Canada Logo
7:20 pm - 4:25 pm
SEA
-
KIX
29h 05m
1 stop
$810Air Canada
Mon, Aug 17 - Tue, Aug 25
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
$822Multiple Airlines
Sat, May 9 - Sat, May 16
Multiple Airlines Logo
6:00 pm - 10:42 pm
KIX
-
SEA
20h 42m
1 stop
Multiple Airlines Logo
7:20 pm - 8:50 pm
SEA
-
KIX
33h 30m
2 stops
$841Multiple Airlines
Thu, Sep 17 - Sat, Sep 26

Air Canada flights from Osaka Kansai Intl Airport to Seattle

Our best Air Canada deals on Osaka Kansai Intl Airport to Seattle flight tickets
Air Canada
Sep 17
KIX6:00 pmOsaka Kansai Intl
16h 32m
1 stop
SEA6:32 pmSeattle/Tacoma Intl
Sep 26
SEA7:20 pmSeattle/Tacoma Intl
29h 05m
1 stop
KIX4:25 pmOsaka Kansai Intl
$683
Air Canada
Jun 23
KIX6:00 pmOsaka Kansai Intl
20h 48m
1 stop
SEA10:48 pmSeattle/Tacoma Intl
Sep 16
SEA5:40 amSeattle/Tacoma Intl
18h 45m
1 stop
KIX4:25 pmOsaka Kansai Intl
$733
Air Canada
Jun 23
KIX6:00 pmOsaka Kansai Intl
16h 32m
1 stop
SEA6:32 pmSeattle/Tacoma Intl
Sep 16
SEA5:40 amSeattle/Tacoma Intl
18h 45m
1 stop
KIX4:25 pmOsaka Kansai Intl
$765

China Airlines flights from Osaka Kansai Intl Airport to Seattle

Our best China Airlines deals on Osaka Kansai Intl Airport to Seattle flight tickets
China Airlines
Aug 3
KIX2:00 pmOsaka Kansai Intl
21h 45m
1 stop
SEA7:45 pmSeattle/Tacoma Intl
Aug 16
SEA1:55 amSeattle/Tacoma Intl
18h 55m
1 stop
KIX12:50 pmOsaka Kansai Intl
$910
China Airlines
Aug 10
KIX7:05 pmOsaka Kansai Intl
16h 40m
1 stop
SEA7:45 pmSeattle/Tacoma Intl
Aug 16
SEA1:55 amSeattle/Tacoma Intl
24h 10m
1 stop
KIX6:05 pmOsaka Kansai Intl
$912
China Airlines
Aug 3
KIX2:00 pmOsaka Kansai Intl
21h 45m
1 stop
SEA7:45 pmSeattle/Tacoma Intl
Aug 16
SEA1:55 amSeattle/Tacoma Intl
18h 55m
1 stop
KIX12:50 pmOsaka Kansai Intl
$918

momondo Fare Finder

 
Customize your flight search to find flights from Osaka Kansai Intl Airport 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 29, 2026.
Use the filters below to find and compare flights from Osaka Kansai Intl Airport 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

Tue 5/12

12:35 pm-2:55 pm

1 stop18h 20m

Seattle/Tacoma Intl

Mon 5/18

12:55 am-10:40 pm

1 stop29h 45m

$644

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 9/17

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Sat 9/26

7:20 pm-4:25 pm

1 stop29h 05m

$683

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-10:48 pm

1 stop20h 48m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-4:25 pm

1 stop18h 45m

$733

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

$765

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 5/9

6:00 pm-10:05 am

1 stop32h 05m

Seattle/Tacoma Intl

Sat 5/16

2:55 pm-4:25 pm

1 stop33h 30m

$769
Quickest round-trip

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

10:30 am-4:25 pm

1 stop13h 55m

$770

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

$772

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 8/17

6:00 pm-10:48 pm

1 stop20h 48m

Seattle/Tacoma Intl

Tue 8/25

7:20 pm-4:25 pm

1 stop29h 05m

$810

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 5/9

7:35 am-10:40 pm

2 stops31h 05m

Seattle/Tacoma Intl

Sat 5/16

2:55 pm-4:25 pm

1 stop33h 30m

$822

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 9/17

6:00 pm-10:42 pm

1 stop20h 42m

Seattle/Tacoma Intl

Sat 9/26

7:20 pm-8:50 pm

2 stops33h 30m

$841

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 Kansai Intl Airport 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 Kansai Intl Airport to Seattle flight prices changed over time?

As of March 2026, prices for Osaka Kansai Intl Airport to Seattle flights are approximately 1% cheaper when compared to flights at the same time last year.

When to book flights from Osaka Kansai Intl Airport to Seattle

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

Cheap Osaka Kansai Intl Airport to Seattle (KIX to SEA) flight deals and tips

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

Fastest flight time

25h 55m

Direct flights

None
The fastest flight from Osaka Kansai Intl Airport to Seattle takes 25h 55m
There are no direct flights from Osaka Kansai Intl Airport to Seattle. There are no popular flight routes from Osaka Kansai Intl Airport to Seattle.
Search flight deals

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

    The distance between Osaka Kansai Intl and Seattle/Tacoma Intl is about 5017.2 mi. By plane, this route typically takes 25h 55m.

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

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

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

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

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

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Osaka Kansai Intl Airport to Seattle

Compare and see reviews for airlines that fly from Osaka Kansai Intl Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $794Free CancellationRating
7.1
10,856 reviews
Search Air Canada flights

Traveling to a place near Seattle?

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Why use momondo?

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

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

Yes. All flights to Seattle from Osaka on momondo can be compared and filtered by various policies on offer, including flexible booking.

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momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Osaka to Seattle.

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