Cheap flights from Seattle to Osaka from $422

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
10:10 am - 8:20 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
17h 10m2 stops Vancouver Intl Sapporo Chitose
Multiple Airlines Logo
3:30 pm - 2:35 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
16h 05m2 stops Sapporo Chitose Vancouver Intl
$751Multiple Airlines
Mon, Mar 1 - Fri, Mar 12
Air Canada Logo
8:40 am - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
16h 00m1 stop Vancouver Intl
Air Canada Logo
7:25 pm - 9:30 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
31h 05m1 stop Vancouver Intl
$757Air Canada
Wed, Mar 3 - Wed, Mar 10
Air Canada Logo
8:40 am - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
16h 00m1 stop Vancouver Intl
Air Canada Logo
7:25 pm - 2:37 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
12h 12m1 stop Vancouver Intl
$758Air Canada
Sun, Feb 14 - Thu, Feb 25
Multiple Airlines Logo
10:10 am - 8:25 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
17h 15m2 stops Vancouver Intl Sapporo Chitose
Multiple Airlines Logo
7:25 pm - 9:57 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
19h 32m1 stop Vancouver Intl
$767Multiple Airlines
Mon, Jan 11 - Mon, Feb 22
ANA Logo
7:00 am - 4:45 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
16h 45m1 stop San Francisco
ANA Logo
6:45 am - 1:20 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
23h 35m1 stop Tokyo Haneda
$796ANA
Tue, Feb 9 - Tue, Feb 16
ANA Logo
7:00 am - 4:45 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
16h 45m1 stop San Francisco
ANA Logo
6:45 am - 1:20 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
23h 35m1 stop Tokyo Haneda
$796ANA
Wed, Nov 25 - Fri, Dec 4
Asiana Airlines Logo
3:15 pm - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
33h 25m1 stop Vancouver Intl
Asiana Airlines Logo
7:25 pm - 6:22 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
15h 57m1 stop Vancouver Intl
$809Asiana Airlines
Sat, Feb 13 - Thu, Feb 25
Asiana Airlines Logo
8:40 am - 5:40 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
16h 00m1 stop Vancouver Intl
Asiana Airlines Logo
7:25 pm - 9:57 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
19h 32m1 stop Vancouver Intl
$809Asiana Airlines
Sun, Feb 14 - Thu, Feb 25
Japan Airlines Logo
8:46 am - 8:25 pmSEA  Seattle/Tacoma Intl-ITM Osaka Itami
18h 39m2 stops San Francisco Tokyo Haneda
Japan Airlines Logo
2:40 pm - 9:55 amITM  Osaka Itami-SEA Seattle/Tacoma Intl
12h 15m1 stop Tokyo Narita
$873Japan Airlines
Wed, Dec 9 - Wed, Dec 16
Japan Airlines Logo
10:02 am - 7:55 pmSEA  Seattle/Tacoma Intl-ITM Osaka Itami
16h 53m2 stops Vancouver Intl Tokyo Narita
Japan Airlines Logo
2:40 pm - 9:55 amITM  Osaka Itami-SEA Seattle/Tacoma Intl
12h 15m1 stop Tokyo Narita
$875Japan Airlines
Wed, Dec 9 - Thu, Dec 17

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Delta flights from Seattle to Osaka

Our best Delta deals on Seattle to Osaka flight tickets
Delta
Nov 25
SEA12:30 pmSeattle/Tacoma Intl
15h 15m
1 stop
KIX8:45 pmOsaka Kansai Intl
Dec 2
KIX11:55 amOsaka Kansai Intl
17h 01m
1 stop
SEA11:56 amSeattle/Tacoma Intl
$834
Delta
Nov 9
SEA12:30 pmSeattle/Tacoma Intl
15h 15m
1 stop
KIX8:45 pmOsaka Kansai Intl
Nov 24
KIX2:00 pmOsaka Kansai Intl
14h 51m
1 stop
SEA11:51 amSeattle/Tacoma Intl
$839
Delta
Nov 8
SEA12:30 pmSeattle/Tacoma Intl
15h 15m
1 stop
KIX8:45 pmOsaka Kansai Intl
Nov 23
KIX11:55 amOsaka Kansai Intl
16h 56m
1 stop
SEA11:51 amSeattle/Tacoma Intl
$874

United Airlines flights from Seattle to Osaka

Our best United Airlines deals on Seattle to Osaka flight tickets
United Airlines
Jan 31
SEA5:00 amSeattle/Tacoma Intl
18h 45m
1 stop
KIX4:45 pmOsaka Kansai Intl
Feb 17
KIX3:20 pmOsaka Kansai Intl
15h 00m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$833
United Airlines
Feb 1
SEA3:45 pmSeattle/Tacoma Intl
34h 45m
1 stop
KIX7:30 pmOsaka Kansai Intl
Feb 17
KIX3:20 pmOsaka Kansai Intl
15h 00m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$836
United Airlines
Feb 1
SEA5:28 pmSeattle/Tacoma Intl
30h 17m
2 stops
KIX4:45 pmOsaka Kansai Intl
Feb 16
KIX3:20 pmOsaka Kansai Intl
15h 00m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$837

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 3/1

10:10 am-8:20 pm

2 stops17h 10m

Osaka Kansai Intl

Fri 3/12

3:30 pm-2:35 pm

2 stops16h 05m

$751

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Wed 3/3

8:40 am-5:40 pm

1 stop16h 00m

Osaka Kansai Intl

Wed 3/10

7:25 pm-9:30 am

1 stop31h 05m

$757
Quickest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sun 2/14

8:40 am-5:40 pm

1 stop16h 00m

Osaka Kansai Intl

Thu 2/25

7:25 pm-2:37 pm

1 stop12h 12m

$758

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 1/11

10:10 am-8:25 pm

2 stops17h 15m

Osaka Kansai Intl

Mon 2/22

7:25 pm-9:57 pm

1 stop19h 32m

$767

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Tue 2/9

7:00 am-4:45 pm

1 stop16h 45m

Osaka Kansai Intl

Tue 2/16

6:45 am-1:20 pm

1 stop23h 35m

$796

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Wed 11/25

7:00 am-4:45 pm

1 stop16h 45m

Osaka Kansai Intl

Fri 12/4

6:45 am-1:20 pm

1 stop23h 35m

$796

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sat 2/13

3:15 pm-5:40 pm

1 stop33h 25m

Osaka Kansai Intl

Thu 2/25

7:25 pm-6:22 pm

1 stop15h 57m

$809

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sun 2/14

8:40 am-5:40 pm

1 stop16h 00m

Osaka Kansai Intl

Thu 2/25

7:25 pm-9:57 pm

1 stop19h 32m

$809

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 12/9

8:46 am-8:25 pm

2 stops18h 39m

Osaka Itami

Wed 12/16

2:40 pm-9:55 am

1 stop12h 15m

$873

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Wed 12/9

10:02 am-7:55 pm

2 stops16h 53m

Osaka Itami

Thu 12/17

2:40 pm-9:55 am

1 stop12h 15m

$875

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 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 $888 to $1,125.
The lowest price recently found on this route was $767.

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 $770.

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

$422

Fastest flight time

13h 15m

Direct flights

None
The best one-way flight to Osaka from Seattle in the past 72 hours is $422. The best round-trip flight deal from Seattle to Osaka found on momondo in the last 72 hours is $751.
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.

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
569 reviews
Search Asiana Airlines flights
ANAPriceFrom $649Free CancellationRating
8.3
1,338 reviews
Search ANA flights
Japan AirlinesPriceFrom $708Free CancellationRating
8.3
1,954 reviews
Search Japan Airlines flights
Air CanadaPriceFrom $862Free CancellationRating
7.1
11,835 reviews
Search Air Canada flights
China AirlinesPriceFrom $915Free CancellationRating
8.3
854 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.8
408 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.

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1 adult
Sun 11/29
Sun 12/6

Find better results for your trip to Japan

Fly into one of these airports located in Osaka