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Cheap flights from Osaka to Seattle from $409

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 9/8. 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
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
2:15 am - 3:15 pm
KIX
-
SEA
29h 00m
1 stop
Multiple Airlines Logo
12:10 am - 9:00 am
SEA
-
KIX
16h 50m
1 stop
$836Multiple Airlines
Sun, Jun 14 - Sun, Jun 21
Multiple Airlines Logo
6:15 pm - 3:15 pm
KIX
-
SEA
13h 00m
1 stop
Multiple Airlines Logo
12:10 am - 9:00 am
SEA
-
KIX
16h 50m
1 stop
$869Multiple Airlines
Thu, Jun 18 - Mon, Jun 29
Multiple Airlines Logo
7:45 am - 3:15 pm
KIX
-
SEA
23h 30m
2 stops
Multiple Airlines Logo
12:10 am - 10:00 pm
SEA
-
KIX
29h 50m
2 stops
$908Multiple Airlines
Mon, Jun 15 - Sun, Jun 21
Asiana Airlines Logo
10:30 am - 3:45 pm
KIX
-
SEA
21h 15m
1 stop
Asiana Airlines Logo
12:10 am - 9:35 pm
SEA
-
KIX
29h 25m
1 stop
$985Asiana Airlines
Thu, Aug 20 - Thu, Sep 24
Asiana Airlines Logo
12:15 am - 3:15 pm
KIX
-
SEA
31h 00m
1 stop
Asiana Airlines Logo
12:10 am - 6:30 pm
SEA
-
KIX
26h 20m
1 stop
$990Asiana Airlines
Wed, Jun 17 - Mon, Jun 29
STARLUX Airlines Logo
1:25 pm - 4:35 pm
KIX
-
SEA
19h 10m
1 stop
STARLUX Airlines Logo
1:15 am - 12:15 pm
SEA
-
KIX
19h 00m
1 stop
$1,010STARLUX Airlines
Wed, Aug 19 - Sat, Sep 19
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
$1,012Multiple Airlines
Fri, Jun 26 - Thu, Aug 27
Multiple Airlines Logo
7:45 am - 11:37 am
KIX
-
SEA
19h 52m
2 stops
Multiple Airlines Logo
4:30 pm - 9:50 pm
SEA
-
KIX
13h 20m
1 stop
$1,017Multiple Airlines
Tue, Oct 13 - Tue, Oct 13
STARLUX Airlines Logo
1:25 pm - 4:35 pm
KIX
-
SEA
19h 10m
1 stop
STARLUX Airlines Logo
1:15 am - 2:00 pm
SEA
-
KIX
20h 45m
1 stop
$1,024STARLUX Airlines
Wed, Aug 19 - Mon, Sep 21
Air Canada Logo
6:00 pm - 2:22 pm
KIX
-
SEA
12h 22m
1 stop
Air Canada Logo
5:45 am - 4:25 pm
SEA
-
KIX
18h 40m
1 stop
$1,052Air Canada
Thu, Aug 27 - Mon, Aug 31

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Air Canada flights from Osaka to Seattle

Our best Air Canada deals on Osaka to Seattle flight tickets
Air Canada
Aug 27
KIX6:00 pmOsaka Kansai Intl
12h 22m
1 stop
SEA2:22 pmSeattle/Tacoma Intl
Aug 31
SEA5:45 amSeattle/Tacoma Intl
18h 40m
1 stop
KIX4:25 pmOsaka Kansai Intl
$1,052
Air Canada
Aug 27
KIX6:00 pmOsaka Kansai Intl
16h 32m
1 stop
SEA6:32 pmSeattle/Tacoma Intl
Aug 31
SEA10:45 amSeattle/Tacoma Intl
13h 40m
1 stop
KIX4:25 pmOsaka Kansai Intl
$1,059
Air Canada
Aug 3
KIX6:00 pmOsaka Kansai Intl
20h 48m
1 stop
SEA10:48 pmSeattle/Tacoma Intl
Aug 17
SEA10:45 amSeattle/Tacoma Intl
13h 40m
1 stop
KIX4:25 pmOsaka Kansai Intl
$1,066

Japan Airlines flights from Osaka to Seattle

Our best Japan Airlines deals on Osaka to Seattle flight tickets
Japan Airlines
Jun 26
ITM4:25 pmOsaka Itami
21h 24m
2 stops
SEA9:49 pmSeattle/Tacoma Intl
Aug 28
SEA11:25 amSeattle/Tacoma Intl
29h 05m
2 stops
ITM8:30 amOsaka Itami
$1,360
Japan Airlines
Jun 23
ITM7:25 amOsaka Itami
22h 32m
2 stops
SEA1:57 pmSeattle/Tacoma Intl
Sep 16
SEA7:25 amSeattle/Tacoma Intl
19h 15m
2 stops
ITM6:40 pmOsaka Itami
$1,370

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 May 5, 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

Sun 6/14

2:15 am-3:15 pm

1 stop29h 00m

Seattle/Tacoma Intl

Sun 6/21

12:10 am-9:00 am

1 stop16h 50m

$836
Quickest round-trip

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 6/18

6:15 pm-3:15 pm

1 stop13h 00m

Seattle/Tacoma Intl

Mon 6/29

12:10 am-9:00 am

1 stop16h 50m

$869

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 6/15

7:45 am-3:15 pm

2 stops23h 30m

Seattle/Tacoma Intl

Sun 6/21

12:10 am-10:00 pm

2 stops29h 50m

$908

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 8/20

10:30 am-3:45 pm

1 stop21h 15m

Seattle/Tacoma Intl

Thu 9/24

12:10 am-9:35 pm

1 stop29h 25m

$985

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 6/17

12:15 am-3:15 pm

1 stop31h 00m

Seattle/Tacoma Intl

Mon 6/29

12:10 am-6:30 pm

1 stop26h 20m

$990

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/19

1:25 pm-4:35 pm

1 stop19h 10m

Seattle/Tacoma Intl

Sat 9/19

1:15 am-12:15 pm

1 stop19h 00m

$1,010

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 6/26

2:20 pm-9:00 am

1 stop34h 40m

Seattle/Tacoma Intl

Thu 8/27

12:10 am-9:00 am

1 stop16h 50m

$1,012

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 10/13

7:45 am-11:37 am

2 stops19h 52m

Seattle/Tacoma Intl

Tue 10/13

4:30 pm-9:50 pm

1 stop13h 20m

$1,017

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/19

1:25 pm-4:35 pm

1 stop19h 10m

Seattle/Tacoma Intl

Mon 9/21

1:15 am-2:00 pm

1 stop20h 45m

$1,024

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

5:45 am-4:25 pm

1 stop18h 40m

$1,052

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 May 2026, prices for Osaka to Seattle flights are approximately 11% 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 30m

Direct flights

None
The fastest flight from Osaka to Seattle takes 12h 30m
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 30m.

  • 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
10,998 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
Redmond
Kent
Marysville
Puyallup
Tukwila
Lakewood
Cle Elum
Federal Way
Centralia
Fife
Shoreline
Westport
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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