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Cheap flights from Seattle to Osaka from $407

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:05 pm - 8:25 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
32h 20m2 stops Vancouver Intl Tokyo Narita
Multiple Airlines Logo
7:25 am - 6:22 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
27h 57m2 stops Tokyo Narita Vancouver Intl
$772Multiple Airlines
Tue, Dec 1 - Tue, Dec 15
Multiple Airlines Logo
10:10 am - 8:25 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
17h 15m2 stops Vancouver Intl Tokyo Narita
Multiple Airlines Logo
7:25 am - 2:37 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
24h 12m2 stops Tokyo Narita Vancouver Intl
$772Multiple Airlines
Wed, Dec 2 - Thu, Dec 10
ANA Logo
3:45 pm - 10:10 amSEA  Seattle/Tacoma Intl-ITM Osaka Itami
25h 25m1 stop Tokyo Haneda
ANA Logo
5:50 pm - 1:20 pmITM  Osaka Itami-SEA Seattle/Tacoma Intl
12h 30m1 stop Tokyo Haneda
$819ANA
Wed, Jan 13 - Wed, Jan 20
ANA Logo
3:45 pm - 10:10 amSEA  Seattle/Tacoma Intl-ITM Osaka Itami
25h 25m1 stop Tokyo Haneda
ANA Logo
4:50 pm - 1:20 pmITM  Osaka Itami-SEA Seattle/Tacoma Intl
13h 30m1 stop Tokyo Haneda
$819ANA
Tue, Feb 2 - Tue, Feb 9
Air Canada Logo
7:00 pm - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
29h 40m1 stop Vancouver Intl
Air Canada Logo
7:25 pm - 9:55 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
19h 30m1 stop Vancouver Intl
$856Air Canada
Thu, Mar 4 - Mon, Mar 8
Air Canada Logo
10:10 am - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
14h 30m1 stop Vancouver Intl
Air Canada Logo
7:25 pm - 9:57 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
19h 32m1 stop Vancouver Intl
$886Air Canada
Wed, Feb 10 - Wed, Feb 17
Japan Airlines Logo
12:15 pm - 7:55 pmSEA  Seattle/Tacoma Intl-ITM Osaka Itami
14h 40m1 stop Tokyo Narita
Japan Airlines Logo
2:40 pm - 10:05 amITM  Osaka Itami-SEA Seattle/Tacoma Intl
12h 25m1 stop Tokyo Narita
$902Japan Airlines
Wed, Jan 20 - Wed, Jan 27
Japan Airlines Logo
12:15 pm - 7:55 pmSEA  Seattle/Tacoma Intl-ITM Osaka Itami
14h 40m1 stop Tokyo Narita
Japan Airlines Logo
2:40 pm - 10:05 amITM  Osaka Itami-SEA Seattle/Tacoma Intl
12h 25m1 stop Tokyo Narita
$902Japan Airlines
Mon, Jan 18 - Tue, Jan 26
Asiana Airlines Logo
10:10 am - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
14h 30m1 stop Vancouver Intl
Asiana Airlines Logo
7:25 pm - 2:35 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
12h 10m1 stop Vancouver Intl
$1,045Asiana Airlines
Sun, Feb 28 - Wed, Mar 10
China Airlines Logo
1:15 am - 12:50 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
19h 35m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
1:10 pm - 7:15 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
22h 05m1 stop Taipei City Taiwan Taoyuan Intl
$1,087China Airlines
Sat, Apr 10 - Sun, Apr 25

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Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific deals on Seattle to Osaka flight tickets
Cathay Pacific
Oct 26
SEA11:25 amSeattle/Tacoma Intl
26h 55m
1 stop
KIX6:20 amOsaka Kansai Intl
Nov 11
KIX6:05 pmOsaka Kansai Intl
31h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$834
Cathay Pacific
Nov 2
SEA10:25 amSeattle/Tacoma Intl
26h 55m
1 stop
KIX6:20 amOsaka Kansai Intl
Nov 16
KIX6:05 pmOsaka Kansai Intl
31h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$840
Cathay Pacific
Nov 24
SEA10:25 amSeattle/Tacoma Intl
26h 55m
1 stop
KIX6:20 amOsaka Kansai Intl
Dec 1
KIX9:15 pmOsaka Kansai Intl
28h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$854

ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets
ANA
Jan 13
SEA3:45 pmSeattle/Tacoma Intl
25h 25m
1 stop
ITM10:10 amOsaka Itami
Jan 20
ITM5:50 pmOsaka Itami
12h 30m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$819
ANA
Jan 19
SEA7:00 amSeattle/Tacoma Intl
16h 45m
1 stop
KIX4:45 pmOsaka Kansai Intl
Jan 26
KIX3:20 pmOsaka Kansai Intl
15h 00m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$822
ANA
Dec 2
SEA3:40 pmSeattle/Tacoma Intl
26h 30m
1 stop
ITM11:10 amOsaka Itami
Dec 9
ITM4:50 pmOsaka Itami
13h 30m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$824

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Osaka that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 12/1

7:05 pm-8:25 pm

2 stops32h 20m

Osaka Kansai Intl

Tue 12/15

7:25 am-6:22 pm

2 stops27h 57m

$772

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Wed 12/2

10:10 am-8:25 pm

2 stops17h 15m

Osaka Kansai Intl

Thu 12/10

7:25 am-2:37 pm

2 stops24h 12m

$772

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 1/13

3:45 pm-10:10 am

1 stop25h 25m

Osaka Itami

Wed 1/20

5:50 pm-1:20 pm

1 stop12h 30m

$819

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Tue 2/2

3:45 pm-10:10 am

1 stop25h 25m

Osaka Itami

Tue 2/9

4:50 pm-1:20 pm

1 stop13h 30m

$819

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Thu 3/4

7:00 pm-5:40 pm

1 stop29h 40m

Osaka Kansai Intl

Mon 3/8

7:25 pm-9:55 pm

1 stop19h 30m

$856

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Wed 2/10

10:10 am-5:40 pm

1 stop14h 30m

Osaka Kansai Intl

Wed 2/17

7:25 pm-9:57 pm

1 stop19h 32m

$886

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 1/20

12:15 pm-7:55 pm

1 stop14h 40m

Osaka Itami

Wed 1/27

2:40 pm-10:05 am

1 stop12h 25m

$902

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Mon 1/18

12:15 pm-7:55 pm

1 stop14h 40m

Osaka Itami

Tue 1/26

2:40 pm-10:05 am

1 stop12h 25m

$902
Quickest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sun 2/28

10:10 am-5:40 pm

1 stop14h 30m

Osaka Kansai Intl

Wed 3/10

7:25 pm-2:35 pm

1 stop12h 10m

$1,045

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sat 4/10

1:15 am-12:50 pm

1 stop19h 35m

Osaka Kansai Intl

Sun 4/25

1:10 pm-7:15 pm

1 stop22h 05m

$1,087

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 Osaka from

How to get the cheapest flight ticket from Seattle to Osaka

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 Seattle and Osaka?

Prices are currently low for flights on this route.

Typical prices usually range from $836 to $1,106.
The lowest price recently found on this route was $766.

What is the cheapest month to fly to Osaka?

In general, January is the cheapest month to fly from Seattle to Osaka. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $747. If you are unable to visit Osaka during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $749.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 41% on your flight if you consider stops on a Seattle to Osaka flight.

How have Seattle to Osaka flight prices changed over time?

As of October 2026, prices for Seattle to Osaka flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Osaka

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

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

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

Best Price Found

$407

Fastest flight time

13h 15m

Direct flights

None
The best one-way flight to Osaka from Seattle in the past 72 hours is $407. The best round-trip flight deal from Seattle to Osaka found on momondo in the last 72 hours is $772.
The fastest flight from Seattle to Osaka takes 13h 15m
There are no direct flights from Seattle to Osaka. There are no popular flight routes from Seattle to Osaka.
Search flight deals

Frequently asked questions about flying from Seattle to Osaka

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

    The distance between Seattle/Tacoma Intl and Osaka is about 4994.7 mi. Flights usually cover this in 13h 15m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Osaka are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Osaka.

  • What documentation or ID do you need to fly to Osaka?

    The travel and health documents you'll need for your trip to Osaka may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Osaka. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Seattle to Osaka

Compare and see reviews for airlines that fly from Seattle to Osaka with momondo
Airline
Rating
Free Cancellation
Price
Asiana AirlinesPriceFrom $555Free CancellationRating
8.1
567 reviews
Search Asiana Airlines flights
ANAPriceFrom $649Free CancellationRating
8.3
1,328 reviews
Search ANA flights
Japan AirlinesPriceFrom $708Free CancellationRating
8.3
1,943 reviews
Search Japan Airlines flights
Air CanadaPriceFrom $862Free CancellationRating
7.1
11,793 reviews
Search Air Canada flights
China AirlinesPriceFrom $915Free CancellationRating
8.3
853 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.7
400 reviews
Search STARLUX Airlines flights

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Nishinomiya

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Seattle to Osaka flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Seattle and Osaka by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Seattle to Osaka now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Osaka and let you know when they change.

An easier way to manage your Osaka trip

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Find better results for your trip to Japan

Fly into one of these airports located in Osaka

Osaka Itami Airport
Osaka Kansai Intl Airport