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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.
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 - 9:32 amKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
31h 07m1 stop Vancouver Intl
$756Air Canada
Wed, Feb 17 - Mon, Feb 22
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
Multiple Airlines Logo
10:10 am - 7:40 amSEA  Seattle/Tacoma Intl-ITM Osaka Itami
28h 30m2 stops Vancouver Intl Tokyo Narita
Multiple Airlines Logo
12:30 pm - 2:37 pmITM  Osaka Itami-SEA Seattle/Tacoma Intl
19h 07m2 stops Tokyo Haneda Vancouver Intl
$769Multiple Airlines
Sun, Jan 10 - Wed, Jan 27
ANA Logo
3:40 pm - 10:10 amSEA  Seattle/Tacoma Intl-ITM Osaka Itami
25h 30m1 stop Tokyo Haneda
ANA Logo
8:20 pm - 1:20 pmITM  Osaka Itami-SEA Seattle/Tacoma Intl
34h 00m1 stop Tokyo Haneda
$796ANA
Tue, Dec 29 - Tue, Jan 12
ANA Logo
3:45 pm - 9:25 amSEA  Seattle/Tacoma Intl-ITM Osaka Itami
24h 40m1 stop Tokyo Haneda
ANA Logo
3:40 pm - 1:20 pmITM  Osaka Itami-SEA Seattle/Tacoma Intl
14h 40m1 stop Tokyo Haneda
$796ANA
Tue, Feb 9 - Tue, Feb 16
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
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
7:05 pm - 7:15 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
16h 10m1 stop Taipei City Taiwan Taoyuan Intl
$1,091China Airlines
Sat, Mar 27 - Mon, Apr 12
China Airlines Logo
1:10 am - 1:20 pmSEA  Seattle/Tacoma Intl-KIX Osaka Kansai Intl
20h 10m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
7:05 pm - 7:15 pmKIX  Osaka Kansai Intl-SEA Seattle/Tacoma Intl
16h 10m1 stop Taipei City Taiwan Taoyuan Intl
$1,102China Airlines
Mon, Mar 22 - Tue, Apr 13

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ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets
ANA
Nov 8
SEA7:00 amSeattle/Tacoma Intl
16h 45m
1 stop
KIX4:45 pmOsaka Kansai Intl
Nov 23
KIX9:00 pmOsaka Kansai Intl
33h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$796
ANA
Dec 29
SEA3:40 pmSeattle/Tacoma Intl
13h 40m
1 stop
KIX10:20 pmOsaka Kansai Intl
Jan 12
KIX9:00 pmOsaka Kansai Intl
33h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$799
ANA
Feb 9
SEA7:00 amSeattle/Tacoma Intl
19h 00m
2 stops
ITM7:00 pmOsaka Itami
Feb 16
ITM12:00 pmOsaka Itami
18h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$800

Japan Airlines flights from Seattle to Osaka

Our best Japan Airlines deals on Seattle to Osaka flight tickets
Japan Airlines
Dec 9
SEA8:46 amSeattle/Tacoma Intl
18h 39m
2 stops
ITM8:25 pmOsaka Itami
Dec 16
ITM2:40 pmOsaka Itami
12h 15m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$873
Japan Airlines
Nov 1
SEA7:10 amSeattle/Tacoma Intl
19h 00m
1 stop
KIX7:10 pmOsaka Kansai Intl
Nov 5
KIX2:40 pmOsaka Kansai Intl
18h 20m
2 stops
SEA4:00 pmSeattle/Tacoma Intl
$918
Japan Airlines
Nov 8
SEA12:00 pmSeattle/Tacoma Intl
27h 25m
1 stop
KIX8:25 amOsaka Kansai Intl
Nov 22
KIX6:50 amOsaka Kansai Intl
41h 17m
2 stops
SEA7:07 amSeattle/Tacoma Intl
$948

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

Wed 2/17

8:40 am-5:40 pm

1 stop16h 00m

Osaka Kansai Intl

Mon 2/22

7:25 pm-9:32 am

1 stop31h 07m

$756
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 - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Sun 1/10

10:10 am-7:40 am

2 stops28h 30m

Osaka Itami

Wed 1/27

12:30 pm-2:37 pm

2 stops19h 07m

$769

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Tue 12/29

3:40 pm-10:10 am

1 stop25h 30m

Osaka Itami

Tue 1/12

8:20 pm-1:20 pm

1 stop34h 00m

$796

SeattleOsaka

SEA Seattle/Tacoma Intl - ITM Osaka Itami

SEAITM

Seattle/Tacoma Intl

Tue 2/9

3:45 pm-9:25 am

1 stop24h 40m

Osaka Itami

Tue 2/16

3:40 pm-1:20 pm

1 stop14h 40m

$796

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

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sat 3/27

1:15 am-12:50 pm

1 stop19h 35m

Osaka Kansai Intl

Mon 4/12

7:05 pm-7:15 pm

1 stop16h 10m

$1,091

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 3/22

1:10 am-1:20 pm

1 stop20h 10m

Osaka Kansai Intl

Tue 4/13

7:05 pm-7:15 pm

1 stop16h 10m

$1,102

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 $888 to $1,125.
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 $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 $756.
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
1,340 reviews
Search ANA flights
Japan AirlinesPriceFrom $708Free CancellationRating
8.3
1,947 reviews
Search Japan Airlines flights
Air CanadaPriceFrom $862Free CancellationRating
7.1
11,819 reviews
Search Air Canada flights
China AirlinesPriceFrom $915Free CancellationRating
8.3
853 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.7
403 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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Find better results for your trip to Japan

Fly into one of these airports located in Osaka

Osaka Itami Airport
Osaka Kansai Intl Airport