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Cheap flights from Seattle to Osaka from $310

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Osaka departing on 4/23. 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

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Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

Enter your travel dates to find the best prices.
ANA Logo
7:15 am - 4:40 pm
SEA
-
KIX
16h 25m
1 stop
ANA Logo
6:45 am - 1:20 pm
KIX
-
SEA
23h 35m
1 stop
$585ANA
Fri, Feb 27 - Sat, Mar 7
ANA Logo
7:15 am - 4:40 pm
SEA
-
KIX
16h 25m
1 stop
ANA Logo
3:45 pm - 1:20 pm
KIX
-
SEA
14h 35m
1 stop
$590ANA
Fri, Feb 27 - Sat, Mar 7
Air Canada Logo
8:00 pm - 4:25 pm
SEA
-
KIX
28h 25m
1 stop
Air Canada Logo
6:00 pm - 10:10 pm
KIX
-
SEA
20h 10m
1 stop
$602Air Canada
Sat, Apr 18 - Thu, Apr 23
ANA Logo
5:45 pm - 1:10 pm
SEA
-
ITM
27h 25m
2 stops
ANA Logo
8:20 pm - 2:25 pm
ITM
-
SEA
34h 05m
1 stop
$617ANA
Wed, Apr 22 - Wed, Apr 29
ANA Logo
5:45 pm - 9:45 pm
SEA
-
UKB
36h 00m
2 stops
ANA Logo
9:15 pm - 2:25 pm
UKB
-
SEA
33h 10m
1 stop
$617ANA
Wed, Apr 22 - Wed, Apr 29
ANA Logo
3:45 pm - 8:00 am
SEA
-
UKB
23h 15m
1 stop
ANA Logo
9:15 pm - 1:20 pm
UKB
-
SEA
33h 05m
1 stop
$621ANA
Sun, Feb 8 - Sun, Feb 15
Asiana Airlines Logo
12:55 am - 6:05 pm
SEA
-
KIX
25h 10m
1 stop
Asiana Airlines Logo
7:25 pm - 2:55 pm
KIX
-
SEA
35h 30m
1 stop
$623Asiana Airlines
Sun, Apr 5 - Wed, Apr 29
Asiana Airlines Logo
12:55 am - 9:40 am
SEA
-
KIX
16h 45m
1 stop
Asiana Airlines Logo
7:25 pm - 2:55 pm
KIX
-
SEA
35h 30m
1 stop
$624Asiana Airlines
Mon, Apr 20 - Wed, May 13
Japan Airlines Logo
12:30 pm - 7:55 pm
SEA
-
ITM
14h 25m
1 stop
Japan Airlines Logo
2:40 pm - 9:55 am
ITM
-
SEA
12h 15m
1 stop
$634Japan Airlines
Wed, Feb 18 - Wed, Feb 25
Japan Airlines Logo
8:31 am - 7:50 pm
SEA
-
ITM
19h 19m
2 stops
Japan Airlines Logo
11:30 am - 4:17 pm
ITM
-
SEA
20h 47m
2 stops
$639Japan Airlines
Wed, Apr 22 - Wed, Apr 29

ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets
ANA
Feb 27
SEA7:15 amSeattle/Tacoma Intl
16h 25m
1 stop
KIX4:40 pmOsaka Kansai Intl
Mar 7
KIX6:45 amOsaka Kansai Intl
23h 35m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$585
ANA
Feb 27
SEA7:15 amSeattle/Tacoma Intl
16h 25m
1 stop
KIX4:40 pmOsaka Kansai Intl
Mar 7
KIX3:45 pmOsaka Kansai Intl
14h 35m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$590
ANA
Feb 21
SEA3:45 pmSeattle/Tacoma Intl
23h 15m
1 stop
UKB8:00 amKobe
Mar 9
UKB7:05 amKobe
23h 15m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$591

Japan Airlines flights from Seattle to Osaka

Our best Japan Airlines deals on Seattle to Osaka flight tickets
Japan Airlines
Feb 18
SEA12:30 pmSeattle/Tacoma Intl
14h 25m
1 stop
ITM7:55 pmOsaka Itami
Feb 25
ITM2:40 pmOsaka Itami
12h 15m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$634
Japan Airlines
Apr 22
SEA8:31 amSeattle/Tacoma Intl
19h 19m
2 stops
ITM7:50 pmOsaka Itami
Apr 29
ITM11:30 amOsaka Itami
20h 47m
2 stops
SEA4:17 pmSeattle/Tacoma Intl
$639
Japan Airlines
Apr 21
SEA2:25 pmSeattle/Tacoma Intl
39h 35m
2 stops
KIX10:00 pmOsaka Kansai Intl
May 13
KIX6:45 amOsaka Kansai Intl
23h 42m
2 stops
SEA2:27 pmSeattle/Tacoma Intl
$640

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Osaka 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 January 27, 2026.
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

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 2/27

7:15 am-4:40 pm

1 stop16h 25m

Osaka Kansai Intl

Sat 3/7

6:45 am-1:20 pm

1 stop23h 35m

$585

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 2/27

7:15 am-4:40 pm

1 stop16h 25m

Osaka Kansai Intl

Sat 3/7

3:45 pm-1:20 pm

1 stop14h 35m

$590

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 4/18

8:00 pm-4:25 pm

1 stop28h 25m

Osaka Kansai Intl

Thu 4/23

6:00 pm-10:10 pm

1 stop20h 10m

$602

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Wed 4/22

5:45 pm-1:10 pm

2 stops27h 25m

Osaka Itami

Wed 4/29

8:20 pm-2:25 pm

1 stop34h 05m

$617

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Wed 4/22

5:45 pm-9:45 pm

2 stops36h 00m

Kobe

Wed 4/29

9:15 pm-2:25 pm

1 stop33h 10m

$617

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Sun 2/8

3:45 pm-8:00 am

1 stop23h 15m

Kobe

Sun 2/15

9:15 pm-1:20 pm

1 stop33h 05m

$621

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 4/5

12:55 am-6:05 pm

1 stop25h 10m

Osaka Kansai Intl

Wed 4/29

7:25 pm-2:55 pm

1 stop35h 30m

$623

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 4/20

12:55 am-9:40 am

1 stop16h 45m

Osaka Kansai Intl

Wed 5/13

7:25 pm-2:55 pm

1 stop35h 30m

$624

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Wed 2/18

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Wed 2/25

2:40 pm-9:55 am

1 stop12h 15m

$634

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Wed 4/22

8:31 am-7:50 pm

2 stops19h 19m

Osaka Itami

Wed 4/29

11:30 am-4:17 pm

2 stops20h 47m

$639

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?

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 $677. 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 $679.

How far in advance should I book a flight to Osaka?

You are more likely to see cheaper flights to Osaka from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka for around $865 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Osaka from Seattle for as low as $697 on momondo.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 57% 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 January 2026, prices for Seattle to Osaka flights are approximately 40% 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

Fastest flight time

13h 15m

Direct flights

None
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

  • 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
Alaska AirlinesPriceFrom $370Free CancellationRating
8.0
11,799 reviews
Search Alaska Airlines flights
Asiana AirlinesPriceFrom $595Free CancellationRating
8.1
501 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $647Free CancellationRating
7.4
9,205 reviews
Search United Airlines flights
ANAPriceFrom $650Free CancellationRating
8.4
1,078 reviews
Search ANA flights
Korean AirPriceFrom $660Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Air CanadaPriceFrom $669Free CancellationRating
7.1
10,664 reviews
Search Air Canada flights
Japan AirlinesPriceFrom $697Free CancellationRating
8.3
1,691 reviews
Search Japan Airlines flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.9
268 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $975Free CancellationRating
8.4
1,334 reviews
Search EVA Air 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

Airports listed have a maximum distance of 22.5 mi from Osaka
Osaka Itami Airport
Osaka Kansai Intl Airport