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Cheap flights from Osaka Kansai Intl Airport to Seattle from $507

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 9/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
7:45 am - 8:11 am
KIX
-
SEA
40h 26m
2 stops
Multiple Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
$1,000Multiple Airlines
Fri, Sep 4 - Wed, Sep 9
Multiple Airlines Logo
2:20 pm - 9:00 am
KIX
-
SEA
34h 40m
1 stop
Multiple Airlines Logo
12:10 am - 9:00 am
SEA
-
KIX
16h 50m
1 stop
$1,025Multiple Airlines
Fri, Sep 4 - Tue, Sep 8
Air Canada Logo
6:00 pm - 6:30 pm
KIX
-
SEA
16h 30m
1 stop
Air Canada Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$1,029Air Canada
Thu, Jun 11 - Sat, Jun 13
Air Canada Logo
6:00 pm - 10:40 pm
KIX
-
SEA
20h 40m
1 stop
Air Canada Logo
7:20 pm - 4:25 pm
SEA
-
KIX
29h 05m
1 stop
$1,055Air Canada
Tue, Jun 2 - Tue, Jun 9
Air Canada Logo
6:00 pm - 10:40 pm
KIX
-
SEA
20h 40m
1 stop
Air Canada Logo
10:45 am - 4:25 pm
SEA
-
KIX
13h 40m
1 stop
$1,058Air Canada
Tue, Jun 9 - Mon, Jun 29
Air Canada Logo
6:00 pm - 2:22 pm
KIX
-
SEA
12h 22m
1 stop
Air Canada Logo
10:45 am - 4:25 pm
SEA
-
KIX
13h 40m
1 stop
$1,062Air Canada
Thu, Aug 27 - Mon, Aug 31
STARLUX Airlines Logo
1:25 pm - 4:10 pm
KIX
-
SEA
18h 45m
1 stop
STARLUX Airlines Logo
1:15 am - 2:00 pm
SEA
-
KIX
20h 45m
1 stop
$1,078STARLUX Airlines
Sat, Jun 20 - Thu, Jun 25
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:45 am - 4:25 pm
SEA
-
KIX
18h 40m
1 stop
$1,081Air Canada
Mon, Aug 3 - Mon, Aug 17
Air Canada Logo
6:00 pm - 2:20 pm
KIX
-
SEA
12h 20m
1 stop
Air Canada Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$1,088Air Canada
Sat, Jun 6 - Sat, Jun 13
Multiple Airlines Logo
8:30 pm - 3:15 pm
KIX
-
SEA
34h 45m
2 stops
Multiple Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
$1,090Multiple Airlines
Wed, Jun 17 - Wed, Sep 23

STARLUX Airlines flights from Osaka Kansai Intl Airport to Seattle

Our best STARLUX Airlines deals on Osaka Kansai Intl Airport to Seattle flight tickets
STARLUX Airlines
Jun 20
KIX1:25 pmOsaka Kansai Intl
18h 45m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
Jun 25
SEA1:15 amSeattle/Tacoma Intl
20h 45m
1 stop
KIX2:00 pmOsaka Kansai Intl
$1,078
STARLUX Airlines
Oct 14
KIX3:10 pmOsaka Kansai Intl
17h 00m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
Oct 17
SEA1:15 amSeattle/Tacoma Intl
19h 00m
1 stop
KIX12:15 pmOsaka Kansai Intl
$1,112
STARLUX Airlines
Jul 24
KIX3:10 pmOsaka Kansai Intl
17h 25m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
Aug 19
SEA1:15 amSeattle/Tacoma Intl
19h 00m
1 stop
KIX12:15 pmOsaka Kansai Intl
$1,245

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
Jun 2
KIX6:00 pmOsaka Kansai Intl
20h 40m
1 stop
SEA10:40 pmSeattle/Tacoma Intl
Jun 9
SEA7:20 pmSeattle/Tacoma Intl
29h 05m
1 stop
KIX4:25 pmOsaka Kansai Intl
$1,055
Air Canada
Jun 9
KIX6:00 pmOsaka Kansai Intl
20h 40m
1 stop
SEA10:40 pmSeattle/Tacoma Intl
Jun 29
SEA10:45 amSeattle/Tacoma Intl
13h 40m
1 stop
KIX4:25 pmOsaka Kansai Intl
$1,058
Air Canada
Aug 27
KIX6:00 pmOsaka Kansai Intl
12h 22m
1 stop
SEA2:22 pmSeattle/Tacoma Intl
Aug 31
SEA10:45 amSeattle/Tacoma Intl
13h 40m
1 stop
KIX4:25 pmOsaka Kansai Intl
$1,062

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 May 11, 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

Fri 9/4

7:45 am-8:11 am

2 stops40h 26m

Seattle/Tacoma Intl

Wed 9/9

11:10 pm-2:10 pm

1 stop23h 00m

$1,000

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 9/4

2:20 pm-9:00 am

1 stop34h 40m

Seattle/Tacoma Intl

Tue 9/8

12:10 am-9:00 am

1 stop16h 50m

$1,025

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 6/11

6:00 pm-6:30 pm

1 stop16h 30m

Seattle/Tacoma Intl

Sat 6/13

3:00 pm-4:25 pm

1 stop33h 25m

$1,029

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/2

6:00 pm-10:40 pm

1 stop20h 40m

Seattle/Tacoma Intl

Tue 6/9

7:20 pm-4:25 pm

1 stop29h 05m

$1,055

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/9

6:00 pm-10:40 pm

1 stop20h 40m

Seattle/Tacoma Intl

Mon 6/29

10:45 am-4:25 pm

1 stop13h 40m

$1,058
Quickest round-trip

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 8/27

6:00 pm-2:22 pm

1 stop12h 22m

Seattle/Tacoma Intl

Mon 8/31

10:45 am-4:25 pm

1 stop13h 40m

$1,062

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 6/20

1:25 pm-4:10 pm

1 stop18h 45m

Seattle/Tacoma Intl

Thu 6/25

1:15 am-2:00 pm

1 stop20h 45m

$1,078

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 8/3

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Mon 8/17

5:45 am-4:25 pm

1 stop18h 40m

$1,081

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 6/6

6:00 pm-2:20 pm

1 stop12h 20m

Seattle/Tacoma Intl

Sat 6/13

3:00 pm-4:25 pm

1 stop33h 25m

$1,088

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 6/17

8:30 pm-3:15 pm

2 stops34h 45m

Seattle/Tacoma Intl

Wed 9/23

11:10 pm-2:10 pm

1 stop23h 00m

$1,090

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 May 2026, prices for Osaka Kansai Intl Airport to Seattle flights are approximately 10% 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

12h 22m

Direct flights

None
The fastest flight from Osaka Kansai Intl Airport to Seattle takes 12h 22m
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

Frequently asked questions about flying from Osaka Kansai Intl Airport to Seattle

  • 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 12h 22m.

  • 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
11,017 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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Osaka to Seattle. momondo saves you time and could save you money on your trip.

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.

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

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.

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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